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At Northwest Aircraft Maintenance, annual inspections are performed by an experienced Authorized Inspector following a thorough and comprehensive checklist, which includes:
RUN UP: A complete 38-point run up checklist before and after the inspection.
INSPECTION: A 190-point inspection checklist including tachometer calibration check, opening and closing the aircraft, compression check, complete inspection of the engine, engine compartment, the airframe and the propeller. It also includes control surface travel checks, cable tension checks, magneto timing checks, cooling baffle inspection, fuel system inspection and landing gear retraction checks. We will compile a list of currently installed engine, propeller and accessories. We check the status of AD notes on the airframe, engine, propeller and accessories. We will compile a list of time in service for the aircraft, engine and propeller, and time since overhaul or repair on key accessories.
SERVICING: A 40-point servicing and lubrication check list including lubrication, wheel bearing inspection, cleaning, gapping, testing and rotating of spark plugs, oil change labor (if due) and oil filter cut and inspect, inspecting and cleaning all fuel screens, draining the carburetor bowl, checking brake and hydraulic fluid levels, checking function of all inside and outside lights, tire and oleo inflation, battery recharge and test, ELT function and corrosion check. We will also clean the belly, vacuum the interior and clean the windows.
ESTIMATE & REPAIRS: We will provide an estimate for any needed repairs and break it down into airworthiness items, recommended items and items that need to be watched for future attention