# Piper PA-28-181 Archer III — Normal Operating Procedures

> **NOT FOR FLIGHT** — source fidelity: not_applicable | operational review: none | completeness: normal_only | 1 unresolved safety defect(s)

Normal operating procedures for the Piper PA-28-181 Archer III with Lycoming O-360 carbureted engine. Covers preflight walk-around through shutdown and securing. Contains no numeric limitations; all airspeeds, power settings, fuel quantities, and performance values must be obtained from the specific aircraft POH. Equipment variations exist across this production run; verify against the specific aircraft.

> **safety_defect**: Contains no airspeeds, power settings, fuel quantities or other limitations — must come from aircraft POH.
> **content_gap**: Equipment variations exist across this model and variant, including presence or absence of cowl flaps and avionics configurations. Verify all items against the specific aircraft POH before use.

## Preflight Walk-Around

- [ ] Aircraft documents (ARROW) — airworthiness certificate, registration, radio station license, operating handbook, weight-and-balance data — **ON BOARD AND CURRENT**
- [ ] Fuel quantity — visually verify each tank; quantity matches tabs or dipstick; sufficient for flight with required reserves — **VERIFIED, ADEQUATE**
- [ ] Fuel grade — confirm correct octane for the O-360 engine — **CORRECT GRADE PER POH**
- [ ] Fuel sump — left wing tank quick-drain; sample checked for water and contamination — **CLEAR, CORRECT COLOR, NO CONTAMINATION**
- [ ] Fuel sump — right wing tank quick-drain; sample checked for water and contamination — **CLEAR, CORRECT COLOR, NO CONTAMINATION**
- [ ] Fuel sump — gascolator drain on lower engine firewall — **DRAINED AND CLEAR**
- [ ] Fuel caps — both wing tanks — **PROPERLY SEATED AND SECURED**
- [ ] Fuel selector — rotate through all positions; verify freedom of movement and positive detents — **MOVES FREELY, DETENTS POSITIVE**
- [ ] Engine oil level — dipstick check; verify quantity within acceptable operating range — **WITHIN LIMITS PER POH; CAP SECURE**
- [ ] Engine compartment — inspect for fuel or oil leaks, chafed wiring, loose hoses, and foreign objects — **CLEAN AND SECURE**
- [ ] Carburetor air inlet — screen or filter present; opening clear of obstructions — **CLEAR, FILTER SERVICEABLE**
- [ ] Exhaust system — visible stacks and muffler for cracks, loose clamps, or unusual heat discoloration — **SERVICEABLE**
- [ ] Cowl flaps (if equipped) — open and free to operate — **OPEN / SERVICEABLE**
- [ ] Cowling fasteners — **ALL SECURE**
- [ ] Propeller and spinner — inspect for nicks, cracks, gouges, and spinner security — **SERVICEABLE, SPINNER SECURE**
- [ ] Nose gear — strut extension, shimmy damper, tire condition, and tow bar removal — **STRUT EXTENDED, TIRE SERVICEABLE, TOW BAR REMOVED**
- [ ] Pitot tube — cover removed, inlet clear — **COVER REMOVED, CLEAR**
- [ ] Static ports — both sides of fuselage, unobstructed — **CLEAR**
- [ ] Left wing leading edge, fuel tank skin, and stall warning vane — **NO DEFORMATION OR FUEL STAINING; VANE MOVES FREELY**
- [ ] Left aileron and flap — attachment security, full travel, and surface condition — **SECURE, FREE MOVEMENT, NO DAMAGE**
- [ ] Left wingtip and navigation light — **UNDAMAGED, LENS INTACT**
- [ ] Left main gear — strut extension, tire condition, and brake assembly — **STRUT NORMAL, TIRE SERVICEABLE, BRAKES ADEQUATE**
- [ ] Horizontal stabilator — leading edge, hinge bolts, and anti-servo tab condition — **UNDAMAGED, HARDWARE SECURE**
- [ ] Vertical stabilizer and rudder — condition, hinge security, and tail beacon — **SERVICEABLE, BEACON LENS INTACT**
- [ ] Tail tie-down — **REMOVED**
- [ ] Right main gear — strut, tire, and brake condition — **STRUT NORMAL, TIRE SERVICEABLE, BRAKES ADEQUATE**
- [ ] Right wing — leading edge, fuel tank skin, and fuel cap security — **UNDAMAGED, FUEL CAP SECURE**
- [ ] Right aileron and flap — attachment, travel, and condition — **SECURE, FREE MOVEMENT, NO DAMAGE**
- [ ] Right wingtip and navigation light — **UNDAMAGED, LENS INTACT**
- [ ] Wing and nose tie-downs — all ground restraints removed — **REMOVED**
- [ ] Antennas — all externally visible units — **SECURE AND UNDAMAGED**
- [ ] Baggage door — latched and secured — **LATCHED**

## Cockpit Preparation / Before Start

- [ ] Control lock — **REMOVED AND STOWED**
- [ ] Seats — fore-aft position and lock — **ADJUSTED AND LOCKED**
- [ ] Seat belts and shoulder harnesses — all occupants — **FASTENED AND ADJUSTED**
- [ ] Passenger briefing — seatbelts, door latching, emergency exits, no smoking, sterile cockpit during critical phases — **COMPLETED**
- [ ] Flight controls — move through full travel; verify aileron, elevator, and rudder respond correctly and move freely — **FULL AND FREE, CORRECT SENSE**
- [ ] Parking brake — **SET**
- [ ] Fuel selector — select fullest tank or per POH recommendation for start and takeoff — **CORRECT TANK SELECTED**
- [ ] Avionics master switch — **OFF (protect avionics during start)**
- [ ] All electrical switches — lights, strobes, pitot heat, fan — **OFF**
- [ ] Circuit breakers — **ALL IN**
- [ ] Cowl flaps (if equipped) — **OPEN**
- [ ] Flaps — set for takeoff per POH — **SET PER POH**
- [ ] Elevator trim — set to takeoff position — **SET TAKEOFF**
- [ ] Mixture — **RICH**
- [ ] Throttle — **CLOSED / IDLE**

## Engine Start

- [ ] Area clear — visually confirm propeller arc is free of persons and objects; announce 'CLEAR PROP' — **CLEAR; ANNOUNCED**
- [ ] Battery master switch — **ON**
- [ ] Alternator switch — **ON**
- [ ] Beacon / anti-collision light — **ON**
- [ ] Prime — prime per POH for ambient conditions; cold engine requires more priming than warm — **PRIMED PER POH CONDITIONS**
- [ ] Throttle — set for start per POH (typically cracked slightly open) — **SET PER POH**
- [ ] Mixture — **RICH (or per POH for elevation)**
- [ ] Ignition switch — **BOTH**
- [ ] Starter — engage; release promptly when engine fires — **ENGAGED, THEN RELEASED**
- [ ] Throttle — reduce to idle once engine runs smoothly — **REDUCED TO IDLE**
- [ ] Oil pressure — verify pressure rise within first 30 seconds; shut down if no rise — **RISING NORMALLY**
- [ ] Avionics master switch — **ON (after engine stable)**
- [ ] Engine instruments — oil pressure in green arc, no warning lights — **NORMAL**

## Before Taxi / After Start

- [ ] Avionics — power-on self-tests; GPS, COM/NAV, transponder operational — **SELF-TESTS COMPLETE, OPERATIONAL**
- [ ] Altimeter — set current altimeter setting; confirm indicated elevation matches field elevation within tolerance — **SET AND CONFIRMED**
- [ ] Heading indicator — align to magnetic compass while stationary — **ALIGNED**
- [ ] ATIS / weather — obtain current field conditions and NOTAM information — **OBTAINED AND NOTED**
- [ ] Transponder — set assigned or VFR squawk code; mode as appropriate — **CODE SET, ALT**
- [ ] Taxi clearance or CTAF advisory — **OBTAINED**
- [ ] Taxi and landing lights — **ON AS APPROPRIATE**
- [ ] Parking brake — **RELEASE WHEN READY TO TAXI**
- [ ] Brakes — test effectiveness with brief application after first forward movement — **EFFECTIVE**
- [ ] Flight instruments during taxi — attitude indicator erecting, turn coordinator responding, magnetic compass swinging — **FUNCTIONING NORMALLY**

## Run-Up / Before Takeoff

- [ ] Parking brake — **SET**
- [ ] Run-up position — headed into wind if possible; surface firm and free of loose debris — **CONFIRMED**
- [ ] Flight controls — recheck full and free movement, correct control response — **FULL, FREE, AND CORRECT**
- [ ] Fuel selector — fullest tank or per POH recommendation for takeoff — **CORRECT TANK**
- [ ] Mixture — **RICH (or adjusted for field elevation per POH)**
- [ ] Engine warm-up — oil temperature in green arc before run-up power application — **OIL TEMP IN GREEN**
- [ ] Throttle — advance to run-up power setting per POH — **SET PER POH**
- [ ] Magnetos — check LEFT, then RIGHT; RPM drop on each within POH limits; differential within limits; return to BOTH — **BOTH CHECKED, WITHIN LIMITS**
- [ ] Carburetor heat — apply and note RPM change; a slight drop confirms carb heat is functioning; clear ice if any; return to COLD — **CHECKED, CARB HEAT FUNCTIONAL, COLD**
- [ ] Engine instruments at run-up power — oil pressure and temperature within normal range — **NORMAL**
- [ ] Throttle — reduce to idle; engine runs smoothly without roughness or stumble — **SMOOTH AT IDLE**
- [ ] Suction / vacuum gauge — **WITHIN NORMAL RANGE**
- [ ] Ammeter / electrical system — **INDICATING CHARGE**
- [ ] Flaps — confirm takeoff setting; indicator verified — **SET PER POH, CONFIRMED**
- [ ] Elevator trim — **SET TO TAKEOFF POSITION**
- [ ] Transponder — **ALT (or as directed by ATC)**
- [ ] Strobes and landing light — **ON**
- [ ] Doors and windows — fully closed and latched — **CLOSED AND LATCHED**
- [ ] Abort plan — departure-end landing area and abort speed/criteria reviewed — **BRIEFED**

## Takeoff

- [ ] Final approach and runway — confirm clear in both directions before entering runway — **CLEAR**
- [ ] Carburetor heat — **COLD for takeoff**
- [ ] Throttle — advance smoothly to full power; do not rush the application — **FULL POWER, RPM CONFIRMED**
- [ ] Engine gauges at takeoff power — oil pressure normal, no anomalies — **NORMAL**
- [ ] Directional control — apply right rudder as needed to maintain runway centerline — **TRACKING CENTERLINE**
- [ ] Rotate — apply smooth back pressure on stabilator at Vr per POH — **ROTATE PER POH**
- [ ] Positive rate of climb — confirm on altimeter and VSI before retracting flaps — **CONFIRMED**
- [ ] Flaps — retract after positive rate established and clear of obstacles per POH — **RETRACTING PER POH**
- [ ] Airspeed — transition to Vx or Vy as appropriate for conditions per POH — **ESTABLISHED PER POH**

## Climb

- [ ] Airspeed — establish best-rate or best-angle climb per conditions and POH — **ESTABLISHED PER POH**
- [ ] Throttle — full power or normal climb power per POH — **SET PER POH**
- [ ] Carburetor heat — monitor for conditions conducive to carburetor ice; apply if ice suspected — **MONITORED; COLD UNLESS ICE SUSPECTED**
- [ ] Cowl flaps (if equipped) — open during climb to manage cylinder head temperatures — **OPEN**
- [ ] Mixture — rich below density altitude requiring lean; lean progressively at higher elevations per POH — **SET PER POH**
- [ ] Engine instruments — oil temperature, oil pressure within normal limits; no abnormal indications — **NORMAL**
- [ ] Fuel quantity — periodic check; consistent with planned consumption — **CHECKED**
- [ ] Heading indicator — cross-check against magnetic compass — **CHECKED AND CONSISTENT**
- [ ] Traffic scan — **CONTINUOUS**

## Cruise

- [ ] Throttle — set cruise power per POH cruise performance table for altitude and temperature — **SET PER POH**
- [ ] Cowl flaps (if equipped) — adjust for cylinder head temperature management in cruise — **ADJUSTED PER POH**
- [ ] Mixture — lean to best power or best economy per POH recommendation for cruise power and altitude — **LEANED PER POH**
- [ ] Elevator trim — adjust for hands-free level cruise flight — **TRIMMED**
- [ ] Engine instruments — oil temperature, oil pressure, and other gauges within normal limits — **ALL NORMAL**
- [ ] Fuel quantity — both tanks; verify remaining fuel consistent with planned burn rate — **CHECKED AND CONSISTENT**
- [ ] Fuel selector — switch tanks per POH interval to maintain lateral balance — **SWITCHED PER POH**
- [ ] Carburetor heat — apply periodically or when conditions indicate icing risk (temperature and dewpoint spread, visible moisture, reduced RPM) — **MONITORED; APPLIED AS REQUIRED**
- [ ] Navigation — position, course, and fuel remaining consistent with flight plan — **ON COURSE, ON SCHEDULE**
- [ ] Weather scan — check for developing weather and review alternates — **CHECKED**

## Descent

- [ ] Fuel selector — switch to fullest tank or per POH for approach and landing — **FULLEST TANK / PER POH**
- [ ] Mixture — enrichen progressively as altitude decreases — **ENRICHENING**
- [ ] Carburetor heat — apply during power reductions; monitor for engine roughness indicating ice presence — **APPLIED DURING POWER REDUCTIONS**
- [ ] Throttle — reduce gradually; avoid shock cooling the engine with abrupt power changes — **REDUCED GRADUALLY PER POH**
- [ ] Cowl flaps (if equipped) — close as engine cools during descent — **ADJUSTED TO MANAGE CHT**
- [ ] ATIS / destination weather — obtain current conditions — **OBTAINED AND NOTED**
- [ ] Altimeter — update to current destination setting — **UPDATED**
- [ ] Airspeed — monitor; remain within the appropriate speed for flap extension as flaps are later deployed — **MONITORED**

## Before Landing

- [ ] Fuel selector — fullest tank or per POH for landing — **FULLEST TANK / PER POH**
- [ ] Mixture — **RICH**
- [ ] Carburetor heat — apply on downwind or prior to significant power reduction on approach — **ON (WARM)**
- [ ] Cowl flaps (if equipped) — **CLOSED OR PER POH**
- [ ] Seat belts and shoulder harnesses — confirm all occupants secured — **FASTENED AND SNUG**
- [ ] Flaps — extend incrementally on final approach per POH; verify indicator matches selected position — **SET PER POH**
- [ ] Airspeed — stabilize approach speed per POH for weight and flap configuration — **ESTABLISHED PER POH**
- [ ] Landing light — **ON**
- [ ] Traffic and runway — confirm final approach and runway are clear — **CLEAR**

## Landing

- [ ] Approach speed — maintain stabilized approach at POH speed for flap setting and weight; do not allow excessive energy buildup — **STABILIZED PER POH**
- [ ] Runway alignment — confirm landing on centerline; adjust crosswind correction as needed — **ON CENTERLINE**
- [ ] Power — reduce smoothly to idle at flare; do not cut power abruptly from high setting — **REDUCED TO IDLE AT FLARE**
- [ ] Flare — apply gentle back pressure on stabilator to arrest sink rate; avoid ballooning or holding off too high — **SMOOTH FLARE**
- [ ] Touchdown — main gear first in normal landing; hold nose wheel off until speed decreases — **MAINS FIRST, NOSE HELD OFF**
- [ ] Brakes — apply after nose wheel lowers; maintain directional control; avoid locking wheels — **SMOOTH, EVEN APPLICATION**
- [ ] Runway exit — clear the active runway before slowing excessively; exit at a safe taxi speed — **CLEAR OF RUNWAY**

## Go-Around / Missed Approach

- [ ] Throttle — advance smoothly to full power without hesitation — **FULL POWER**
- [ ] Carburetor heat — **COLD (full power required; carb heat reduces power)**
- [ ] Pitch attitude — establish a positive climb attitude; do not over-rotate — **CLIMB ATTITUDE ESTABLISHED**
- [ ] Flaps — retract incrementally; initial partial retraction to reduce drag while maintaining lift; verify climb performance before full retraction — **RETRACTING PER POH**
- [ ] Airspeed — accelerate to Vy after flap retraction — **ESTABLISHED PER POH**
- [ ] Traffic pattern — communicate intentions and fly standard pattern or as directed by ATC — **COMMUNICATED**

## After Landing

- [ ] Carburetor heat — **COLD**
- [ ] Flaps — **RETRACT**
- [ ] Cowl flaps (if equipped) — **OPEN**
- [ ] Landing light — **OFF or as desired**
- [ ] Transponder — **STANDBY or as directed**
- [ ] Mixture — maintain rich for taxi if further operations; do not lean aggressively at high taxi power — **RICH**

## Shutdown and Securing

- [ ] Parking brake — **SET**
- [ ] Avionics master switch — **OFF (before magneto shutdown)**
- [ ] All electrical loads — lights, fan, pitot heat — **OFF**
- [ ] Mixture — pull to idle cut-off when engine is ready for shutdown; allow engine to stop cleanly — **IDLE CUT-OFF; ENGINE STOPPED**
- [ ] Throttle — after engine stops — **CLOSED / IDLE**
- [ ] Ignition switch — **OFF**
- [ ] Battery master switch — **OFF**
- [ ] Fuel selector — **OFF or per owner's practice**
- [ ] Control lock — install to protect flight controls — **INSTALLED**
- [ ] Tie-downs — secure both wings and nose/tail per airport requirements — **SECURED**
- [ ] Pitot tube cover — **INSTALLED**
- [ ] Aircraft — log squawks; complete maintenance release if required; record Hobbs and tach time — **COMPLETED**

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NOT FOR FLIGHT — source fidelity: not_applicable | operational review: none | completeness: normal_only | 1 unresolved safety defect(s)  
Source: authored — no source document  
Rights: original_expression CC-BY-4.0  
Checklist hash: ec3afaeb2d46a05d7897709073d22cf0fbaff41986951774ee8cf155a7880d36  
Verify against the aircraft's own approved documentation before use.