North Country Heli FlightHELICOPTER GROUND SCHOOL · ACS-ALIGNED
Instrument (IRA-H) · Lesson 21
ACS Alignment
FAA-S-ACS-8 — Instrument Rating, Rotorcraft–Helicopter · Area of Operation VIII. Postflight Procedures · Task: A — Checking Instruments and Equipment
IR.VIII.A.K1 — anomalies to note & reportIR.VIII.A.K2 — required inspections & logbook recordsIR.VIII.A.S1 — conduct a postflight instrument/equipment checkIR.VIII.A.R1 — risk: passing on an unairworthy aircraft
⚑ FLAG (Walter): confirm Task letter (A) and K/R/S sub-numbers for the helicopter Postflight Task in the current FAA-S-ACS-8.
Postflight — Instruments, Equipment & Records
Close the loop: note what worked, write down what didn't, and keep the aircraft airworthy for the next crew.
By the end of this lesson you can:
Conduct a postflight check of the instruments, avionics, and equipment used during the flight.
Identify and clearly document any anomaly, discrepancy, or suspected failure.
Explain the IFR-related inspections and records that keep the aircraft legal (e.g., pitot-static/transponder, VOR checks, altimeter, database currency).
Make a correct go/no-go airworthiness call for the next flight and hand the aircraft over responsibly.
1 · The postflight instrument/equipment check
After shutdown, take a moment to capture what you noticed in flight while it's fresh: any flag, erratic needle, intermittent display, comm/nav anomaly, or autopilot misbehavior. Note GPS messages (loss of integrity, database alerts) and any instrument that lagged or read oddly. The postflight check turns “that seemed weird” into an actionable squawk before the issue bites the next pilot in IMC.
2 · Records that keep an IFR aircraft legal
Item
Why it matters
Pitot-static & altimeter
Required inspection on a recurring interval for IFR operations — verify it is current.
Transponder
Recurring inspection required to operate the transponder — verify currency.
VOR check
Recurring VOR equipment check (when using VOR for IFR) with the result, date, place, and signature recorded.
Navigation database
Current cycle required for IFR GPS/RNAV use — confirm and log per your operation.
⚑ FLAG (Walter): confirm the specific intervals and logging requirements you want taught (e.g., the 14 CFR 91.411 / 91.413 inspection periods and the 91.171 VOR-check recording), and how NCHF documents these — left general here pending your standard.
3 · Document and hand over
Record discrepancies clearly enough that the next person understands the symptom, not just “avionics acting up.” If an item affects airworthiness or a required IFR inspection has lapsed, the aircraft should not be dispatched IFR until resolved. Complete the aircraft and personal logs as your operation requires, secure the aircraft, and brief maintenance or the next crew on anything open. Good postflight discipline is invisible until the day it prevents an accident.
4 · Watch
Curated reference clip — “Logging Instrument Approaches | IFR Currency Requirements” · FlightInsight (YouTube), verified via oEmbed. Embedded with the creator’s player; we don’t host or alter it.
Your aircraft: the postflight/shutdown items and the maintenance/inspection records are aircraft-specific — follow the R44 POH Section 4 (Normal Procedures — Shutdown) and your operation's records process, and check the airframe logs.
✍️ Fill in for the aircraft you flyYour aircraft's shutdown/postflight items, where IFR inspection currency is recorded (pitot-static, transponder, VOR check), and your squawk/record process — look it up in the R44 POH (Normal Procedures) and confirm with your CFI/maintenance.
⚑ FLAG (Walter): the R44 is a VFR-certificated helicopter; confirm which IFR inspections/records actually apply to the aircraft the student flies and how NCHF wants them documented.
Risk management (the “Consider”): the postflight failure mode is silence — not writing down the anomaly you felt in flight, and passing a marginal aircraft to the next pilot. Capture squawks while they're fresh, don't dispatch IFR with a lapsed required inspection, and make the airworthiness call honestly. The cheapest place to catch an instrument problem is on the ramp, not in cloud.