Instrument Flight Deck Check

Objective

The student will demonstrate understanding of the purpose, regulations, and procedures for conducting a thorough instrument flight deck check. Upon completion, the student will correctly identify IFR airworthiness requirements per 14 CFR Parts 61, 91, and 135; explain the procedures for operating with inoperative equipment using 14 CFR §91.213; recognize risks associated with inoperative equipment and outdated navigation data; and perform a complete instrument flight deck check using the appropriate checklist to determine the helicopter is airworthy and properly equipped for instrument flight.

Measurable Outcome: The student will perform an instrument flight deck check per ACS task IH.II.C, correctly identifying all required equipment, determining airworthiness status, and explaining applicable regulations and limitations without instructor prompting.

Content

IH.II.C.K1: Purpose of Performing an Instrument Flight Deck Check and How to Detect Possible Defects

Purpose of the Instrument Flight Deck Check

The instrument flight deck check serves multiple critical functions that go beyond a standard VFR preflight inspection:

1. Regulatory Compliance Verification — Confirms the helicopter meets 14 CFR §91.205(d) equipment requirements for IFR flight and applicable inspection requirements under 14 CFR §91.409 and §91.413.

2. Instrument System Functionality — Verifies all flight instruments, navigation equipment, and communication systems operate correctly before entering IMC where visual references are unavailable.

3. Risk Mitigation — Identifies discrepancies early when corrective action is simple rather than discovering failures in IMC where single-pilot workload is already high.

4. Mission Suitability Assessment — Ensures the helicopter configuration matches the planned flight (e.g., current navigation databases for GPS approaches, appropriate charts available).

Think of it this way: In a helicopter, you don’t have an autopilot to fall back on in most training aircraft. You’re hand-flying in the clouds. Every instrument must work perfectly because you’re the automation. This check is your insurance policy.

Detecting Possible Defects

Systematic defect detection requires a methodical approach:

Visual Inspection Techniques:

• Broken glass or loose components — Check all instrument faces for cracks, moisture, missing screws
• Flagged instruments — Red flags on attitude indicators, heading indicators, or HSI indicate unreliable information
• Discoloration or corrosion — Particularly around static ports, pitot tubes, and electrical connections
• Missing placards — Required limitation markings per 14 CFR §91.9
• Outdated materials — Chart expiration dates, database currency indicators

Functional Tests:

• Power-up sequence — Note instruments that fail to initialize or show abnormal indications
• Cross-check redundancy — Compare airspeed indicator against GPS groundspeed (accounting for wind)
• Suction/vacuum gauge — Should read 4.5–5.5 in. Hg for gyroscopic instruments (if vacuum-driven)
• Avionics self-tests — GPS RAIM checks, transponder function tests
• Annunciator panels — All lights illuminate during self-test, then extinguish

Common Defects in Helicopter IFR Panels:

• Vacuum pump degradation (gradual loss of suction)
• Static system leaks (altimeter drift, VSI showing climb/descent on ground)
• Gyro drift in attitude indicators (precession beyond acceptable limits)
• GPS antenna connection issues (frequent loss of signal)
• Transponder encoder errors (altitude reporting off by more than 125 feet)
• Inoperative marker beacon receivers

IH.II.C.K2: IFR Airworthiness, Including Helicopter Inspection Requirements and Required Equipment for IFR Flight

Inspection Requirements for IFR Helicopters

14 CFR §91.409 — Inspections

All helicopters operating IFR must comply with either:

• Annual Inspection (within preceding 12 calendar months) per §91.409(a), OR
• Progressive Inspection Program per §91.409(d) if applicable

Inspection Documentation Requirements:

• Entries in aircraft maintenance records per §91.417
• Airworthiness certificate displayed (14 CFR §91.203)
• Registration certificate on board

IFR-Specific Inspections — 14 CFR §91.413 and §91.411

These inspections are IN ADDITION to the annual/100-hour requirements:

§91.413 — ATC Transponder Tests and Inspections:

• Required every 24 calendar months
• Must be performed by certificated repair station or manufacturer
• Logbook entry required documenting date and facility
• Includes encoder altitude-reporting system

§91.411 — Altimeter System and Altitude Reporting Equipment Tests and Inspections:

• Required every 24 calendar months
• Tests the static system, altimeter, and automatic altitude reporting system
• Must be performed by certificated repair station with appropriate equipment
• Logbook entry must include date, facility, and person performing test
• No IFR flight is legal without current §91.411 inspection — even if the helicopter has a valid annual

Important Note: Many operators combine §91.411 and §91.413 inspections since they’re on the same 24-month cycle and often performed simultaneously.

Required Equipment for IFR Flight — 14 CFR §91.205(d)

In addition to VFR day/night requirements under §91.205(b) and (c), helicopters operating IFR must have:

Generator or alternator of adequate capacity
Rate-of-climb indicator (vertical speed indicator)
Adjustable altimeter (sensitive, displaying altitude in 100-foot increments)
Ball (slip/skid indicator — part of turn coordinator or separate inclinometer)
Clock displaying hours, minutes, and seconds with sweep-second hand
Attitude indicator (artificial horizon)
Radiocommunication equipment appropriate for facilities to be used
Directional gyro (heading indicator)

Mnemonic: GRABCARD

Additional IFR Equipment Requirements:

Beyond GRABCARD, you also need:

• Navigation equipment suitable for the route (14 CFR §91.205(d)(2))
  • For GPS approaches: IFR-certified GPS with current database
  • For VOR approaches: VOR receiver with VOR check within 30 days (§91.171)
  • For ILS approaches: ILS receiver
• Transponder with Mode C (14 CFR §91.215) — required in most IFR airspace
• DME if operating at FL240 and above (14 CFR §91.205(e)) — rare for helicopters but testable
• Two-way radio communication and navigation equipment appropriate to route and facilities

Helicopter-Specific Considerations:

Unlike airplanes, many training helicopters lack:

• Autopilots (legal for single-pilot IFR but increases workload substantially)
• Dual vacuum systems (loss of vacuum means loss of primary instruments)
• Standby instruments (increases vulnerability to single-point failures)

Know your helicopter’s equipment list. What’s required, what’s optional, and what failure modes exist.

IFR Flight Manual Supplement (FMS) Requirements

If your helicopter has aftermarket avionics (GTN navigators, G500 displays, etc.), the installation must include:

• FAA-approved Flight Manual Supplement
• Weight and balance amendments
• Placard requirements

Operating IFR without required FMS documentation is operating an unairworthy aircraft.

IH.II.C.K3: Required Procedures, Documentation, and Limitations of Flying with Inoperative Equipment

14 CFR §91.213 — Inoperative Instruments and Equipment

This regulation provides a framework for determining whether flight can continue legally with inoperative equipment. The key question: Can I fly IFR with this broken?

91.213(d) — The Decision Process for Part 91 Operations

Aircraft may be operated with inoperative instruments and equipment even without an MEL (Minimum Equipment List) if:

1. The inoperative equipment is not:

   • Part of the VFR-day type certification instruments and equipment (§91.205(b))
   • Listed as required in the aircraft’s equipment list or Kinds of Operations Equipment List (KOEL) in the Type Certificate Data Sheet
   • Required by §91.205 or other FAA regulations for the specific operation (e.g., IFR requires §91.205(d) equipment)
   • Required by an AD (Airworthiness Directive)

2. AND the inoperative equipment is:

   • Removed from the aircraft, the cockpit control placarded “INOPERATIVE,” and maintenance recorded, OR
   • Deactivated and placarded “INOPERATIVE”

The Four-Step Process (Think: “RRAD”)

1. Required by §91.205 for this operation?
2. Required by equipment list or KOEL?
3. Airworthiness Directive require it?
4. Deactivate or remove, then placard

If the answer is “yes” to questions 1, 2, or 3, you CANNOT fly. If “no” to all three, proceed to step 4.

Example Scenarios for Instrument Flight:

Scenario 1: Inoperative DME

• Planning a flight that doesn’t require DME approaches or operation above FL240
• DME is not required by §91.205(d) for the planned route
• KOEL doesn’t list DME as required
• No AD requires DME operation
• Action: Placard “DME INOPERATIVE,” make logbook entry, legal to fly IFR on non-DME routes

Scenario 2: Inoperative Attitude Indicator

• Attitude indicator is required by §91.205(d) — it’s the “A” in GRABCARD
• Action: Flight cannot be conducted under IFR until repaired, even if you have a backup attitude source
• Exception: If the helicopter has an approved MEL allowing single-AI operation, follow MEL procedures

Scenario 3: Inoperative VOR #2 (Dual VOR Installation)

• VOR #1 is operative and suitable for the planned route
• §91.205(d)(2) requires navigation equipment “suitable” for the route — doesn’t specify dual VOR
• KOEL doesn’t require dual VOR
• Action: Placard VOR #2 “INOPERATIVE,” logbook entry, legal for IFR flight using VOR #1

Scenario 4: Expired GPS Database

• Planning GPS approaches
• 14 CFR §91.175 and AIM 1-1-17 require current database for GPS approaches flown to LNAV minimums or lower
• Action: Cannot legally fly GPS approaches as primary means; could use GPS for situational awareness only if verified by other means

Documentation Requirements

Every inoperative item requires:

1. Placard — visible to pilot, stating “INOPERATIVE” or equivalent
2. Maintenance logbook entry — describing defect, date discovered, action taken (deactivated/removed)
3. Discrepancy entry — if using a formal discrepancy log system

Cockpit placards can be temporary (tape and marker) but must be legible and secure.

Minimum Equipment List (MEL) — 14 CFR §91.213(a)

An MEL is an FAA-approved document that allows operation with specific inoperative equipment under stated conditions. For Part 91 operations, MELs are optional but provide greater operational flexibility.

If your helicopter has an MEL:

• You MUST follow it exactly — it becomes regulatory
• The MEL specifies conditions, limitations, and performance penalties
• Required crew actions (e.g., “May be inoperative provided flight is conducted in VMC”)
• Repair intervals (e.g., “Must be repaired within 10 flight days”)

If no MEL exists:

• Use 14 CFR §91.213(d) process described above
• More restrictive — less operational flexibility

Limitations of Flying with Inoperative Equipment

Even when legal under §91.213, operational limitations exist:

1. Increased Single-Pilot Workload — Lost redundancy means higher cognitive load; compensatory scanning required
2. Weather Minima Considerations — Some failures may require personal minimums higher than regulatory minimums (e.g., single VOR increases navigation uncertainty)
3. Route/Approach Restrictions — Inoperative equipment may preclude certain approaches or airways (e.g., no glideslope means localizer-only approach)
4. Performance Degradation — Some failures affect performance (e.g., missing antennas create drag)
5. Insurance and Organizational Policy — May have stricter requirements than FAA minimums

Risk Management Consideration: Just because it’s legal doesn’t mean it’s smart. Evaluate whether the inoperative equipment compromises safety margins for single-pilot IFR in a helicopter.

IH.II.C.R1: Operating with Inoperative Equipment

Risk Assessment Framework

Operating IFR with inoperative equipment introduces cascading risks unique to single-pilot helicopter operations:

Primary Risks:

1. Loss of Redundancy

   • Most training helicopters lack dual systems found in transport-category aircraft
   • Single vacuum pump failure eliminates attitude indicator and heading indicator simultaneously
   • No autopilot to maintain aircraft control while troubleshooting

2. Increased Workload

   • Compensatory procedures (partial panel techniques) require more cognitive resources
   • Higher task saturation during critical phases (approach, departure)
   • Reduced capacity for ATC communications, chart reading, systems management

3. Degraded Situational Awareness

   • Missing navigation equipment reduces cross-check capability
   • Single-source navigation increases position uncertainty
   • Lost communication backup limits emergency options

4. Cascading Failures

   • Initial failure may indicate broader system degradation
   • Electrical system issues often affect multiple instruments simultaneously
   • Vibration-induced failures can propagate to other instruments

Mitigation Strategies:

Before Flight:

• Conservative Go/No-Go Decisions — Consider weather, route complexity, destination facilities when equipment is inoperative
• Personal Minimums Adjustment — Increase ceiling/visibility requirements with reduced capability
• Alternate Planning — Ensure alternates have approaches compatible with operative equipment
• Fuel Reserves — Add fuel beyond regulatory minimums for potential delays or diversions

During Flight:

• Early Diversion — Don’t continue to destination if conditions deteriorate and equipment is limited
• Increased ATC Utilization — Request vectors, surveillance approaches, priority handling if needed
• Workload Management — Slow down, extend patterns, request delays to reduce task saturation
• Backup Procedures Proficiency — Brief partial panel techniques before IMC entry

Scenario Example:

You’re planning a flight with an inoperative VOR #2 (VOR #1 operative, GPS functional). Route includes multiple VOR-based airways.

Risk Analysis:

• VOR #1 failure en route leaves only GPS navigation
• GPS-only navigation acceptable but requires pilot familiarity
• Loss of cross-check between VOR and GPS increases uncertainty
• Weather forecast shows possible moderate turbulence (increases failure probability)

Mitigation:

• Brief GPS procedures thoroughly before departure
• File GPS-direct routing as primary with VOR airways as backup
• Increase fuel reserves for potential rerouting
• Consider delaying flight if turbulence worsens (vibration risk to remaining VOR)

The Critical Question: “If this additional piece fails, can I still safely complete the flight?” If the answer is no, don’t launch.

IH.II.C.R2: Operating with Outdated Navigation Publications or Databases

Regulatory Framework for Currency

Navigation data currency isn’t just good practice — it’s often regulatory:

14 CFR §91.103 — Preflight Action Requires familiarity with “all available information” for IFR flights, including NOTAMs, weather, runway lengths, and approach procedures.

14 CFR §91.175 — Takeoff and Landing Under IFR Implicitly requires current approach procedure charts — can’t comply with published procedures if you don’t have current publications.

AIM 1-1-17 — GPS Approach Procedures Specifically requires database currency for GPS approaches flown using WAAS or LNAV minimums.

AIM 5-1-9 — Instrument Approach Procedure Charts States pilots must use current charts published by FAA or commercial providers reproducing FAA data.

Currency Requirements by Navigation Type:

Paper Charts:

• Expiration Cycle — 56-day revision cycle for terminal procedures
• Legal Requirement — Must be current for the date of flight
• Consequence of Use — Flying approaches from expired charts is operating with inadequate information per §91.103

GPS Databases:

• AIRAC Cycle — 28-day Aeronautical Information Regulation And Control cycle
• Currency Indicator — GPS displays database effective dates
• Expired Database Limitations:
  • May NOT fly GPS approaches to LNAV or lower minimums using expired database
  • May use GPS for en route navigation if verified by other means
  • May fly GPS approaches if procedure hasn’t changed and verified by current chart (rare exception)

VOR/ILS Approaches:

• Chart must be current — database not applicable
• Changes to approaches (minimums, missed approach, frequencies) occur regularly

Risks of Outdated Publications/Databases:

1. Procedure Changes

   • Minimum altitude changes (obstacles, terrain)
   • Frequency changes (communication, navigation)
   • Missed approach procedure modifications
   • Runway closures or taxiway changes

2. Airspace Modifications

   • New Class B/C/D airspace areas
   • TFR (Temporary Flight Restriction) areas not depicted
   • Special use airspace activation changes

3. Navigation Facility Changes

   • VOR decommissioning (VOR Minimum Operational Network changes ongoing)
   • DME removal
   • GPS interference testing areas

4. Chart Symbology Updates

   • FAA periodically updates chart legends and symbology
   • Misinterpretation of new symbols on old chart knowledge

Real-World Scenario:

A pilot flew an RNAV (GPS) approach using a GPS with a database expired by 3 months. The approach had been redesigned with higher minimums due to tower construction. The pilot descended below the new (current) minimums because the old database showed lower minimums. The pilot broke out below the new minimums in VMC — legal accident, no violation, but demonstrated the hazard.

Mitigation Strategies:

Database Management:

• Subscription Services — Maintain current subscriptions for GPS databases, ForeFlight/Garmin Pilot, or paper chart services
• Update Schedule — Update GPS databases every 28 days per AIRAC cycle
• Verification Procedures — Cross-check GPS procedure against current chart before flying approaches
• NOTAM Review — Check for approach changes, frequency changes, facility outages

Paper Chart Management:

• Expiration Awareness — Mark chart expiration dates prominently
• Pre-Flight Check — Verify chart effective dates during flight planning
• Interim Changes — Review NOTAMs for changes not yet incorporated in charts

Organizational Solutions:

• Use digital chart providers with automatic updates
• Implement chart replacement schedule tied to AIRAC cycles
• Maintain currency tracking log for database updates

Personal Minimums:

• Don’t fly approaches with expired databases unless verified unchanged
• If database/charts are >1 cycle old, consider flight delay for update
• Use two sources (GPS + VOR) to cross-check navigation data when possible

The Bottom Line: Technology makes it easy to stay current. There’s no excuse for flying with outdated databases or charts. The risks far outweigh the cost or inconvenience of updates.

IH.II.C.S1: Perform Preflight Inspection by Following the Checklist Appropriate to the Helicopter

Systematic Instrument Flight Deck Check Procedure

The instrument flight deck check is performed after the external preflight inspection and before engine start (or immediately after start depending on helicopter checklist). It integrates with the normal checklist but emphasizes IFR-specific items.

General Flow:

1. Aircraft Documents and Equipment List Review
2. Flight Instruments and Pitot-Static System
3. Gyroscopic Instruments
4. Magnetic Compass
5. Avionics and Communication Equipment
6. Navigation Systems
7. Transponder and ADS-B
8. Required Publications and Charts
9. Inoperative Equipment Assessment

Detailed Checklist Items (Generic — adapt to specific helicopter POH/RFM):

1. Aircraft Documents and Equipment List Review

□ Airworthiness Certificate — displayed, valid
□ Registration Certificate — on board, current
□ Operating Limitations — placards, POH/RFM accessible
□ Weight and Balance — current, within limits for IFR operation
□ Maintenance Logbooks — review latest entries:

• Annual inspection current (within 12 months)
• 91.411 altimeter/static system test current (within 24 months)
• 91.413 transponder test current (within 24 months)
• VOR check current if using VOR (within 30 days per §91.171)
• No open discrepancies affecting IFR equipment

2. Flight Instruments and Pitot-Static System

□ Airspeed Indicator

• Face unobstructed, glass intact
• Reads zero (accounting for wind)
• No flags or error indications

□ Altimeter (14 CFR §91.205(d) requires sensitive altimeter)

• Set to field elevation or known elevation
• Reads within 75 feet of field elevation
• Kollsman window clear, adjustable
• No flags or OFF indicators

□ Vertical Speed Indicator

• Reads zero or close to zero
• If indicating climb/descent on ground, suspect static leak

□ Pitot Tube

• Cover removed (if installed)
• Clear of obstructions (insects, ice, moisture)
• Pitot heat operative (if equipped) — verify annunciator light function

□ Static Ports

• Unobstructed, clean
• Alternate static source valve (if equipped) — check position

3. Gyroscopic Instruments

□ Attitude Indicator (Artificial Horizon)

• Powers up properly (vacuum or electric)
• Horizon bar level after warm-up (within 5° of actual)
• Aircraft symbol aligned
• No excessive precession during ground taxi (limit typically 5°/15 seconds)
• Caging mechanism (if equipped) functional
• No flag or OFF indication

□ Heading Indicator (Directional Gyro)

• Powers up properly
• Rotate helicopter, HI responds correctly (may lag slightly during warm-up)
• Set to magnetic compass heading
• No excessive precession (note deviation over time)
• No flag or OFF indication

□ Turn Coordinator or Turn-and-Slip Indicator

• Ball freely moves with tilt
• Turn needle centers (or responds to yaw input)
• Inclinometer fluid adequate, no leaks

□ Vacuum/Suction Gauge (if vacuum-driven gyros)

• Reading 4.5–5.5 in. Hg (typical range — verify POH)
• Steady indication, no fluctuation
• Low suction warning light test (if equipped)

4. Magnetic Compass

□ Fluid level — full, no bubbles
□ Card rotates freely — not sticky or binding
□ Compensation current — review compass correction card
□ Lighting — functional for night operations
□ Mounting secure — no excessive oscillation

5. Avionics and Communication Equipment

□ Radios (Com 1, Com 2 if equipped)

• Power up properly
• Volume and squelch functional
• Transmit/receive on ATIS or Ground frequency
• No stuck microphone indications

□ Audio Panel

• All positions (Com 1, Com 2, Nav 1, Nav 2, Marker, etc.) selectable
• Intercom functional (if installed)
• Marker beacon audio test (high/medium/low tones)

□ Marker Beacon Receiver (if installed)

• Lights test (white/amber/blue)
• Audio test functional
• Sensitivity switch (if equipped) set appropriately

6. Navigation Systems

□ VOR Receivers (Nav 1, Nav 2)

• Power up, frequency selectable
• TO/FROM indicator responds to frequency changes
• Course Deviation Indicator (CDI) centers when tuned to local VOR
• Flags disappear when receiving valid signal
• Identify station (Morse code identifier)
• VOR Check Required — 14 CFR §91.171 requires VOR check within 30 days for IFR:
  • VOT: ±4° error
  • Airborne checkpoint: ±6° error
  • Ground checkpoint: ±4° error
  • Dual VOR cross-check: ±4° between receivers
  • Logbook entry required — date, place, bearing error, signature

□ GPS/RNAV System

• Powers up, satellite acquisition normal
• Database expiration date current (within AIRAC cycle)
• RAIM prediction check for destination/alternate
• Flight plan loaded correctly
• Terrain/obstacle databases current (if installed)
• WAAS status (if WAAS-equipped) — verify “WAAS available” message

□ ILS/Glideslope Receiver

• Frequency selectable
• Localizer and glideslope indicators functional
• Test on ground using published ILS frequency (limited utility without signal)

□ DME (if installed)

• Powers up
• Frequency automatically slaved to Nav radio (if installation type)
• Distance/speed displays functional

□ HSI (Horizontal Situation Indicator) (if installed)

• Heading aligned with compass
• Course selector rotates freely
• TO/FROM indicator functional
• CDI responds to VOR/GPS input
• Glideslope indicator functional (if ILS-equipped)

7. Transponder and ADS-B

□ Transponder

• Powers up, mode selector functional (STBY, ON, ALT)
• Code entry functional (verify squawk code)
• IDENT button test
• Altitude encoding verified — compare transponder displayed altitude to altimeter
• 91.413 Inspection Current (within 24 months)

□ ADS-B Out (if installed/required)

• Self-test pass indication
• GPS position source valid
• Verify installation meets 14 CFR §91.227 requirements

8. Required Publications and Charts

□ Approach Plates — current for date of flight
□ Enroute Charts — current revision cycle
□ Airport/Facility Directory (Chart Supplement) — current
□ NOTAMs — reviewed and printed/accessible
□ FAR/AIM — current edition accessible
□ POH/RFM — on board, current with supplements
□ Weight and Balance Data — on board
□ GPS Database Expiration — verified current (28-day AIRAC cycle)

9. Inoperative Equipment Assessment

□ Review aircraft discrepancy log
□ Check for placards indicating inoperative equipment
□ Apply 14 CFR §91.213(d) process to any defects:

• Is it required by §91.205(d) for IFR?
• Is it required by KOEL or equipment list?
• Is it required by AD?
• If inoperative and non-required, is it deactivated/placarded?
  □ Assess whether inoperative equipment affects planned flight
  □ Determine if flight can be conducted safely and legally

Completion Actions

□ All required equipment verified functional or legally inoperative
□ All inspections current
□ All databases and publications current
□ No discrepancies preventing safe IFR flight
□ Crew briefing completed (if applicable)
□ Ready for engine start and post-start checks

Helicopter-Specific Considerations:

• Vibration Sensitivity — Instruments in helicopters are subject to higher vibration than airplanes; look for loose mounting, cracked panels, fasteners backing out
• Electrical Load — With high-draw avionics and limited alternator capacity, verify electrical load won’t exceed capacity (critical for single-pilot IFR with GPS/radios/transponder)
• Single Vacuum System — Most training helicopters have single vacuum pump; failure means loss of attitude and heading reference simultaneously
• No Autopilot — Can’t delegate control while troubleshooting; all systems must be 100% functional before IMC entry

Schedule

Equipment

Required References

• FAA-H-8083-15B, Instrument Flying Handbook, Chapter 4 (Helicopter Systems and Instruments)
• FAA-H-8083-21B, Helicopter Flying Handbook, Chapter 11 (Helicopter IFR Operations)
• FAA-H-8083-9B, Aviation Instructor’s Handbook, Chapter 6 (Assessment)
• 14 CFR Part 91, Subpart B (Flight Rules) — §91.103, §91.171, §91.205, §91.213, §91.411, §91.413
• FAA-S-ACS-14, Instrument Rating – Helicopter Airman Certification Standards, Area II, Task C
• AIM, Chapter 1, Section 1 (Air Navigation), Chapter 5, Section 1 (Preflight)

Required Materials

• Current aircraft logbooks (maintenance, airframe, engine)
• Current Weight and Balance documents
• Aircraft POH/RFM with all supplements
• Equipment list/KOEL for the training helicopter
• Sample inoperative equipment scenarios (written or digital)
• Current approach plates, enroute charts, Chart Supplement
• GPS database currency check procedure for installed GPS

Visual Aids and Training Materials

• Laminated checklist showing IFR equipment requirements (14 CFR §91.205(d))
• Flow chart for 14 CFR §91.213(d) decision-making process
• Sample maintenance logbook entries showing §91.411 and §91.413 inspections
• Expired vs. current chart comparison examples
• GPS database currency display screenshots
• Whiteboard or tablet for diagramming instrument systems

Required Equipment

• Training helicopter configured for IFR flight
• Placards and tape for marking inoperative equipment (training purposes)
• Logbook or notepad for student practice documentation
• Digital or paper navigation database currency references

Instructor Actions

1. Begin with Lesson Objectives and Relevance

   • State: “Today we’re covering the instrument flight deck check per ACS task IH.II.C. This isn’t just box-checking — this is your last line of defense before you commit to flying in the clouds single-pilot. In a helicopter, you don’t have autopilot backup, and systems are simpler than transport aircraft. Everything must work, or you must know exactly what you can and can’t do with failures.”
   • Present the three knowledge areas, two risk management items, and skill requirement.
   • Preview completion standards and explain how this integrates with pre-solo and checkride requirements.

2. Teach Purpose and Defect Detection (IH.II.C.K1)

   • Explain the four purposes of the instrument flight deck check: regulatory compliance, system functionality, risk mitigation, mission suitability.
   • Demonstrate visual inspection techniques: show examples of flagged instruments, loose components, broken glass (use photos or actual examples).
   • Walk through functional test methods: power-up sequences, cross-check procedures, vacuum gauge interpretation.
   • Use analogy: “Think of the instrument panel like a race car pit crew check. Everything must be perfect before you go green. In IMC, you can’t pull over and troubleshoot.”
   • Present common defects in helicopters: vacuum degradation, static leaks, gyro drift, GPS antenna issues.

3. Teach IFR Airworthiness Requirements (IH.II.C.K2)

   • Present inspection requirements: annual (§91.409), altimeter/static (§91.411), transponder (§91.413).
   • Emphasize: “91.411 and 91.413 are every 24 calendar months — not 24 months from last inspection, but within the 24th month. If your altimeter check was done in January 2023, it’s due by January 31, 2025, not 24 months from the day.”
   • Teach GRABCARD mnemonic for §91.205(d) equipment.
   • Go through each item systematically with examples from the training helicopter.
   • Highlight helicopter-specific gaps: “Most of our training helicopters don’t have dual vacuum, autopilot, or standby instruments. We’re more vulnerable to single-point failures than airplanes.”
   • Show sample logbook entries for §91.411/413 inspections.

4. Teach Inoperative Equipment Procedures (IH.II.C.K3)

   • Present the 14 CFR §91.213(d) decision tree using the RRAD memory aid.
   • Walk through each question: Required by §91.205? Required by equipment list? Required by AD? Deactivate/remove?
   • Work through detailed scenarios: inoperative DME, inoperative VOR #2, inoperative attitude indicator, expired GPS database.
   • Show placard examples and maintenance logbook entry requirements.
   • Explain MEL concept: “An MEL gives you more flexibility but makes the MEL regulatory. If you don’t have an MEL, you use the 91.213(d) process, which is more restrictive but simpler.”
   • Emphasize documentation: “Placard it, log it, or don’t fly it. There’s no verbal-only inoperative equipment.”

5. Teach Risk Management: Inoperative Equipment (IH.II.C.R1)

   • Present the risk framework: loss of redundancy, increased workload, degraded SA, cascading failures.
   • Use real scenarios: “You’re planning to fly with VOR #2 inoperative. VOR #1 works, GPS works. Legal, right? But what happens if VOR #1 fails en route in IMC and you’re unfamiliar with GPS-only procedures? Now you’re task-saturated, hand-flying, learning a new procedure in the clouds.”
   • Teach mitigation strategies: conservative go/no-go, personal minimums adjustment, workload management.
   • Emphasize: “Legal doesn’t equal smart. Just because 91.213 says you can fly doesn’t mean you should. Assess your proficiency, the weather, the route complexity.”

6. Teach Risk Management: Outdated Publications/Databases (IH.II.C.R2)

   • Explain currency requirements by publication type: paper charts (56-day cycle), GPS databases (28-day AIRAC), VOR checks (30 days).
   • Present risks: procedure changes, airspace modifications, facility changes, chart symbology updates.
   • Show example of approach that changed minimums between chart cycles.
   • Teach mitigation: subscription services, update schedules, NOTAM review, personal minimums.
   • State: “In the digital age, there’s zero excuse for outdated databases. ForeFlight updates automatically, Garmin databases cost less than an hour of helicopter time. The risk isn’t worth the savings.”

7. Demonstrate Complete Instrument Flight Deck Check (IH.II.C.S1)

   • State: “I’m going to perform a complete instrument flight deck check on this helicopter using the POH checklist, emphasizing IFR-specific items.”
   • Work through each section systematically: documents, flight instruments, gyros, compass, avionics, navigation, transponder, publications, inoperative equipment.
   • Verbalize thought process: “I’m checking the altimeter reads within 75 feet of field elevation — we’re at 523 feet, altimeter shows 520, well within limits. I’m also checking the Kollsman window is clear and the instrument isn’t flagged.”
   • Demonstrate logbook inspection: show §91.411 and §91.413 entries, calculate currency.
   • Show GPS database check: “This GPS shows database expires 14 FEB 2025, today is 28 JAN 2025, current.”
   • Demonstrate VOR check: show logbook entry, explain acceptable tolerances.
   • Demonstrate inoperative equipment assessment: “I see a placard on the DME. I check the logbook — entry shows it was deactivated 10 JAN 2025. I verify DME isn’t required for today’s flight — we’re not going above FL240 and not flying DME approaches. Legal to fly.”

8. Supervise Student Practice (IH.II.C.S1)

   • State: “Now you perform the complete instrument flight deck check. Use the POH checklist, verbalize what you’re checking and why.”
   • Observe student technique, correct errors immediately.
   • Prompt if student misses items: “Did you check the vacuum gauge? What’s the acceptable range?”
   • Ensure student checks all required documents and verifies currency.
   • Have student demonstrate database currency check and explain AIRAC cycle.
   • Require student to make inoperative equipment determination on simulated discrepancies.

9. Conduct Scenario-Based Training

   • Present scenarios requiring decision-making:
     • “VOR #1 is inoperative. You have GPS and VOR #2. Can you fly IFR?”
     • “GPS database expired 15 days ago. Can you fly a GPS approach?”
     • “Attitude indicator is sluggish during warm-up but eventually levels. Go or no-go?”
   • Require student to apply 14 CFR §91.213(d) process verbally.
   • Require student to identify risks and mitigation strategies.
   • Debrief each scenario: regulatory answer, risk assessment, personal minimums consideration.

10. Debrief and Assess Understanding

    • Review completion standards from ACS task IH.II.C.
    • Ask comprehension questions:
      • “What inspections are required every 24 calendar months for IFR flight?”
      • “Walk me through the 91.213(d) process for an inoperative turn coordinator.”
      • “How current must a GPS database be to fly a GPS approach to LNAV minimums?”
    • Provide specific feedback on student performance during aircraft checks.
    • Assign homework: review logbooks for training helicopter, verify all inspections current, practice completing equipment list review.

Student Actions

1. Actively Participate in Ground Instruction

   • Take notes on all regulatory requirements (§91.205(d), §91.411, §91.413, §91.213).
   • Ask clarifying questions on inspection currency calculations and equipment list interpretation.
   • Practice GRABCARD mnemonic and RRAD process for inoperative equipment.

2. Review Aircraft Documents Before Demonstration

   • Examine maintenance logbooks for §91.411 and §91.413 entries.
   • Verify annual inspection currency.
   • Review equipment list and identify all IFR-required items.

3. Observe CFI Demonstration Carefully

   • Note CFI’s systematic flow through the checklist.
   • Observe techniques for identifying defects (visual inspection, functional tests).
   • Watch logbook review process and documentation checks.
   • Note how CFI cross-checks multiple sources (logbook, placard, equipment status).

4. Perform Complete Instrument Flight Deck Check

   • Use POH checklist systematically without skipping items.
   • Verbalize each check: what you’re looking for, acceptable parameters, what you observe.
   • Check all required documents: airworthiness certificate, registration, logbooks, weight & balance.
   • Inspect flight instruments: airspeed indicator, altimeter (verify ±75 feet of field elevation), VSI (zero indication).
   • Check gyroscopic instruments: attitude indicator level, heading indicator responsive, turn coordinator functional.
   • Test vacuum/suction system (if applicable): verify 4.5–5.5 in. Hg.
   • Verify magnetic compass: fluid full, card free, compensation card present.
   • Check all avionics: radios transmit/receive, audio panel functional, marker beacon test.
   • Verify navigation systems: VOR receivers functional and checked within 30 days, GPS database current, ILS receiver functional.
   • Test transponder: mode selection works, altitude encoding accurate.
   • Confirm publications current: approach plates, enroute charts, Chart Supplement, NOTAMs reviewed.
   • Assess any inoperative equipment using §91.213(d) process.

5. Demonstrate Decision-Making in Scenarios

   • Apply §91.213(d) decision process to each scenario presented.
   • Identify risks associated with inoperative equipment or outdated publications.
   • Articulate mitigation strategies and personal minimums considerations.
   • Make clear go/no-go decisions with supporting rationale.

6. Complete Post-Lesson Review

   • Verbally summarize key regulatory requirements to CFI.
   • Explain GRABCARD equipment and inspection currency requirements without notes.
   • Demonstrate ability to determine airworthiness with various inoperative equipment scenarios.

7. Ask Questions and Seek Clarification

   • Request clarification on any ambiguous checklist items.
   • Ask for examples of real-world inoperative equipment decisions.
   • Seek feedback on technique and completeness of flight deck check.

Completion Standards

The student demonstrates understanding of the purpose, regulations, and procedures for conducting an instrument flight deck check per ACS task IH.II.C. The lesson is complete when the student:

Knowledge Standards (IH.II.C.K1, K2, K3):

1. Explains the purpose of the instrument flight deck check (IH.II.C.K1) including:

   • Regulatory compliance verification (§91.205(d), §91.411, §91.413)
   • Instrument system functionality confirmation
   • Risk mitigation before IMC entry
   • Mission suitability assessment

2. Describes methods for detecting defects (IH.II.C.K1) including:

   • Visual inspection techniques (broken glass, flags, loose components, corrosion)
   • Functional test procedures (power-up sequences, cross-checks, suction gauge reading)
   • Common helicopter defects (vacuum degradation, static leaks, gyro drift, GPS antenna issues)

3. Identifies all IFR airworthiness requirements (IH.II.C.K2) including:

   • Annual inspection currency (14 CFR §91.409)
   • Altimeter/static system inspection every 24 calendar months (§91.411)
   • Transponder inspection every 24 calendar months (§91.413)
   • VOR check within 30 days if using VOR (§91.171)
   • Correctly recites all GRABCARD equipment from §91.205(d)
   • Explains additional equipment requirements (navigation suitable for route, transponder Mode C, DME above FL240)

4. Applies the 14 CFR §91.213(d) process (IH.II.C.K3) for inoperative equipment:

   • Uses RRAD decision sequence correctly (Required by §91.205? Required by equipment list? AD required? Deactivate/remove?)
   • Explains placard and documentation requirements
   • Distinguishes between operations with and without an MEL
   • Provides correct determinations for scenario-based inoperative equipment situations

5. Explains limitations of flying with inoperative equipment (IH.II.C.K3):

   • Increased single-pilot workload
   • Loss of redundancy and backup systems
   • Route and approach restrictions
   • Performance impacts

Risk Management Standards (IH.II.C.R1, R2):

6. Identifies and mitigates risks of operating with inoperative equipment (IH.II.C.R1):

   • Explains cascading failure risks
   • Describes workload and situational awareness impacts
   • Articulates appropriate mitigation strategies (personal minimums, fuel reserves, early diversion, ATC utilization)
   • Makes sound go/no-go decisions considering equipment status, weather, route complexity, and personal proficiency

7. Identifies and mitigates risks of outdated publications/databases (IH.II.C.R2):

   • States currency requirements for paper charts (56-day cycle), GPS databases (28-day AIRAC), and VOR checks (30 days)
   • Explains consequences of using expired databases for GPS approaches
   • Describes risks of procedure changes, airspace modifications, and facility changes
   • Implements mitigation strategies (subscription services, NOTAM review, verification procedures)

Skill Standards (IH.II.C.S1):

8. Performs a complete instrument flight deck check using the appropriate checklist:

   • Uses systematic flow through all checklist sections without omissions
   • Verifies all required documents on board and current
   • Inspects all flight instruments for proper indication and functionality:
     • Altimeter within ±75 feet of field elevation
     • VSI reads zero or near-zero
     • Attitude indicator levels within 5° after warm-up
     • Heading indicator responds correctly to aircraft rotation
     • Turn coordinator centers and ball moves freely
     • Vacuum/suction gauge reads 4.5–5.5 in. Hg (if applicable)
   • Confirms magnetic compass fluid full, card free, compensation card present
   • Tests all avionics for proper function (radios, audio panel, marker beacon)
   • Verifies all navigation systems functional and current:
     • VOR check current within 30 days if using VOR for IFR
     • GPS database current (within 28-day AIRAC cycle) if flying GPS approaches
     • ILS/glideslope receiver functional if planning ILS approaches
   • Confirms transponder functional with Mode C altitude encoding accurate
   • Verifies all publications and charts current for date of flight
   • Reviews maintenance logbooks to confirm:
     • Annual inspection current (within 12 calendar months)
     • §91.411 altimeter/static inspection current (within 24 calendar months)
     • §91.413 transponder inspection current (within 24 calendar months)
   • Assesses any inoperative equipment using §91.213(d) and makes correct airworthiness determination
   • Identifies any discrepancy that would prevent safe IFR flight

9. Correctly determines airworthiness for instrument flight:

   • Makes accurate determination that the helicopter is airworthy and properly equipped for the planned IFR flight, OR
   • Correctly identifies deficiencies that prevent IFR flight and explains required corrective action
   • Documents review (if required by procedure)

Performance Tolerances:

• Altimeter indication within ±75 feet of known field elevation (per §91.411 test tolerance)
• Vacuum/suction gauge reading 4.5–5.5 in. Hg (typical specification — verify POH)
• Attitude indicator precession no more than 5° in 15 seconds (typical specification — verify POH)
• VOR check tolerance: VOT ±4°, ground checkpoint ±4°, airborne checkpoint ±6°, dual VOR ±4° (per 14 CFR §91.171)
• All completion standards met to ACS proficiency level without instructor prompting

Common Errors to Avoid:

• Failing to verify §91.411 or §91.413 inspection currency in logbooks
• Accepting altitude reporting discrepancies greater than 125 feet between altimeter and transponder
• Overlooking GPS database expiration dates
• Missing VOR check currency requirement (30-day limit per §91.171)
• Incomplete assessment of inoperative equipment using §91.213(d) process
• Not recognizing risks of operating with reduced redundancy in single-pilot helicopter IFR
• Using expired approach plates or enroute charts

The student meets ACS standards for IH.II.C when all knowledge, risk management, and skill elements are demonstrated correctly and the student can independently perform a complete instrument flight deck check, determine airworthiness, and make appropriate operational decisions regarding equipment status.