Item	Chk	Rmrks Code	Description
			STEP 1: PREPARATION
1.01	____	____	Review American Navion Society Video Maintenance Seminar Series One "The Annual."
1.02	____	____	Review AD's and Type Certificate equipment lists.
1.03	____	____	Review Navion Service Manual and Parts Manual.
			STEP 2: PRE-INSPECTION FLIGHT
2.01	____	____	Handling on the ground.
2.01	____	____	Handling on the ground.
2.02	____	____	All instruments working.
2.03	____	____	Engine producing full power on takeoff.
2.04	____	____	Gear and flap retraction and hydraulic pressure.
2.05	____	____	Smooth operation of engine and flight controls.
2.06	____	____	Aircraft rigging in flight.
2.07	____	____	Landing gear warning horn.
2.08	____	____	Brakes.
2.09	____	____	Canopy operation.
2.10	____	____	Inspection of log books, airworthiness and registration certificates, radio station license and AD note compliance.
2.11	____	____	Verify weight and balance calculations.
			STEP 3: OWNER'S SQUAWK LIST
3.01	____	____	A short conversation with owner on items to be replaced or items of concern, oil / hydraulic leaks, tires, batteries, ELT, antennas, etc.
3.02	____	____	List work to be performed per item 3.01.
			STEP 4: MAIN AND NOSE LANDING GEAR
4.01	____	____	Remove all inspection plates. Make sure proper ANS screws are used on landing gear access plate #14514222.
4.02	____	____	Check for corrosion, worn parts, freedom of all 3 uplock rollers and condition of bumper washers on mains.
4.03	____	____	Place airplane on jacks.
4.04	____	____	Remove main wheels; clean and pack bearings; grease gear; inspect brakes; tires: check for proper inflation; inspect hydraulic cylinders; inspect wheels for cracks.
4.05	____	____	Retract gear, inspect for clearance and locking position.
4.06	____	____	Check scissor bolts and bushing for wear.
4.07	____	____	Inspect struts for looseness, fluid leaks and cracks in weld at trunnion junction.
4.08	____	____	Check seating mechanism for worn bushing and bolts.
4.09	____	____	Check for side movement (for looseness) of trunnion bearing, add washers as necessary.
4.10	____	____	Remove nose wheel and pack bearing, inspect wheels for cracks, check inflation air pressure.
4.11	____	____	Check nose gear collar assembly to fork bolts (4) for torque.
4.12	____	____	Check wiper ring retainer nut, P/N 145-34135 for tightness, remove lock screw and tighten clockwise with a spanner wrench for struts (if not available, tap with a block of hard wood and mallet), don't over tighten to cause excessive drag.
4.13	____	____	Check nose gear doors for proper closing, replace wheel, retract and check clearance.
4.14	____	____	With nose gear retracted, visually inspect full locking clearance and centering of gear in wheel well.
4.15	____	____	Check actuating cylinder for full travel (need 1/16" before bottoming).
4.16	____	____	Inspect nose gear hydraulic cylinder for leakage, tightness and hose roughing.
4.17	____	____	Check nose gear drag brace support bungee spring for straightness. If curvature in spring is noted, replace bungee assembly.
4.18	____	____	Inspect gear retract hat section, P/N 145-34161 for cracks around forward end, top and bottom.
4.19	____	____	Check the hydraulic retract cylinder mounting brackets for loose rivets.
			STEP 5: FUEL SYSTEM
5.01	____	____	Visually check all tank fuel lines for stains and leaks (mains, aux and accumulator).
5.02	____	____	Flush main fuel screen and replace safety wires.
5.03	____	____	Remove and clean gascolator screen and bowl in nose gear well.
5.04	____	____	Remove screen on the fuel injection system control valve, turn on boost pump to flush, or:
5.05	____	____	Remove and clean fuel screen in carburetor.
5.06	____	____	Check fuel selector valve for leaks, cleanliness, ease of operation and proper placard.
5.07	____	____	Check baggage compartment, underseat, and wingtip auxiliary tanks and valves (if installed).
5.08	____	____	Check fuel gauge sending units (in tanks) for leaks or stains.
5.09	____	____	Verify operation of fuel gauges.
5.10	____	____	Check fuel tank vents.
			STEP 6: WINGS
6.01	____	____	Skin: Check for loose rivets and corrosion.
6.02	____	____	Inspect wings with flaps extended. Inside surfaces should be free of dirt, debris and corrosion. Check hydraulic lines.
6.03	____	____	Check control mechanisms for cotter pins. Check aileron balance weights.
6.04	____	____	Ailerons and flaps: Check control cables for condition, correct routing and tension.
6.05	____	____	Check bolts and bushings for wear.
6.06	____	____	Check condition of electrical wiring.
6.07	____	____	Check rigging of ailerons and flaps and that aileron trim tab is not bent to extreme angle.
			STEP 7: FUSELAGE AND CABIN
7.01	____	____	Check for corrosion of aft section of cabin, especially in floor area.
7.02	____	____	Remove Baggage Curtain and visually check fuselage aft section for dirt, plugged drain holes, corrosion. Check wiring and any electrical or avionics mounted in aft fuselage.
7.03	____	____	Clean and check trim tab mechanism.
7.04	____	____	Check bulkhead number 294-10 for cracks if outside "Texas-Patch" is not installed.
7.05	____	____	Remove front seats for visual inspection under panel. Check for hydraulic and oil leaks, freedom of control column, loose wires and hoses.
7.06	____	____	Check condition of safety belts.
7.07	____	____	Clean seat rails and lube for ease of movement, check mechanism for locking.
7.08	____	____	Check engine controls for ease of movement and placards.
7.09	____	____	Check all instruments, gauges and switches for proper placarding.
7.10	____	____	Check magnetic compass for fluid and compass card. Operate radios and instrument lights and observe compass reactions if any.
7.11	____	____	Check window glass for cracks, discoloration.
7.12	____	____	Wash down airplane and clean as required.
7.13	____	____	Check condition of pitot tube and static ports.
7.14	____	____	Slide canopy back and forth. Check for ease of operation, security of latching closed and latching in partially opened position. Inspect for corrosion and for condition of wires. Check windows for cracks, leaks and security. Check placard. Check emergency opening mechanism.
7.15	____	____	Check heater for ease of operation of controls and for functioning of blower.
7.16	____	____	Check cabin air intake and cabin air exhaust controls for operation. Make sure vents are clear of debris.
7.17	____	____	Check all external fairings to ensure security.
			STEP 8: EMPENNAGE
8.01	____	____	Check skin for corrosion and for loose rivets.
8.02	____	____	Check freedom of movement of flight controls.
8.03	____	____	Lube pulleys and check bolts for cotter pins and safety wires.
8.04	____	____	Check trim tabs for proper alignment.
8.05	____	____	Make sure vertical fin top fairing and fuselage fairings are secure and without cracks.
			STEP 9: ELECTRICAL SYSTEM AND AVIONICS
9.01	____	____	Remove battery from box, clean and paint box as necessary. Inspect wiring around master solenoid (relay).
9.02	____	____	Clean battery. Check water level and log specific gravity here: __________________
9.03	____	____	Check fuses and circuit breakers for placarding and amperage designations. Inspect behind fuse/circuit breaker panel for in-line and other unauthorized fuses.
9.04	____	____	Pitot heat: Verify operation (if installed).
9.05	____	____	Check operation of wingtip and tail position (navigation) lights. Inspect position light sockets and bulbs and lenses for security and absence of corrosion.
9.06	____	____	Check operation of landing lights and physical security of lights to struts. Inspect for corrosion, wiring and condition of lenses.
9.07	____	____	During landing gear retract test, observe operation of landing gear lights and gear warning horn.
9.08	____	____	Check operation of panel / instrument / avionics lights and dimmer.
9.09	____	____	Check cabin (canopy dome) light.
9.10	____	____	Verify that required spare fuses and lamps are on board.
9.11	____	____	During engine tests, verify ammeter readings and alternator or generator operation.
9.12	____	____	Check operation of headset jacks and cabin loud-speaker with engine off and engine running to detect audio noise. E.G. alternator whine.
9.13	____	____	Verify operation of hand / boom / headset microphones, PTT keying control, speaker muting-relay and/or intercom if installed.
9.14	____	____	Check operation of NAVCOM'S, ADF, transponder, DME, auto-pilot and any other avionics on board. Verify radio operation, if possible, by a radio-check call to an ATC facility.
9.15	____	____	Inspect all antennas for security, cleanliness condition of elements and connectors.
9.16	____	____	Observe anti-collision (beacon) and strobe lights, if installed, for proper operation and check to see if they introduce noise into the radios.
9.17	____	____	Check physical mounting of avionics.
9.18	____	____	Check operation of cooling fan (if installed) or make sure avionics vents are clear.
			STEP 10: HYDRAULIC SYSTEM
10.01	____	____	Check hydraulic reservoir for filter condition and fluid level.
10.02	____	____	Check lines and hoses for condition, routing and leaks.
10.03	____	____	Actuating cylinders (left and right main gear). Check for cracks in cylinder. Also shaft P/N 143-33153 for cracks in cotter pin hole.
10.04	____	____	Remove 1/4 bolt to actuating cylinder to check travel. Needs 1/16" before bottom.
10.05	____	____	Check for down pressure. Remove lower hose on hydraulic cylinder in nose gear well and install hydraulic pressure gauge. Pump auxiliary (hand) hydraulic pump, observe pressure. Adjust gear control handle to obtain pressure if necessary.
10.06	____	____	Check the master control valve under panel for 0-ring leaks and line security and leaks.
10.07	____	____	Hydraulic pressure must be 1125 psi +/- 25 pounds.
			STEP 11: BRAKES
11.01	____	____	Inspect brake drums for wear.
11.02	____	____	Check brake blocks for glazing, if so, roughen up with Emery cloth.
11.03	____	____	If hand pump or pedals need to be pumped to obtain pressure, replace blocks or pucks.
11.04	____	____	It may be necessary to bleed brakes to obtain a firm pedal.
11.05	____	____	Brake adjustment valves are installed in most Navions. Adjust if taxi tests indicate need.
			STEP 12: ENGINE
12.01	____	____	Drain oil and change filter or oil screen (at owner's discretion). Recommendation is to change oil and filter and to have an oil analysis performed by a laboratory.
12.02	____	____	Remove plugs and clean, gap, test.
12.03	____	____	Run compression test and log results. Cylinder #: 1 2 3 4 5 6
12.04	____	____	Check timing.
12.05	____	____	Check for routing and condition of all hoses in engine compartment.
12.06	____	____	Check exhaust system for cracks and leaks.
12.07	____	____	Remove heater muff for inspection. Check for leaks, corrosion, cracks, carbon.
12.08	____	____	Clean air filter and check alternate air, if appropriate.
12.09	____	____	Inspect intake pipes, hoses and clamps.
12.10	____	____	Check baffles and seals for condition.
12.11	____	____	Inspect engine controls for ease of movement.
12.12	____	____	Check engine mounts.
12.13	____	____	Check cowling and hoods for cracks and loose rivets. Also check hood and cowling moldings.
12.14	____	____	Inspect engine for oil leaks.
12.15	____	____	Check crankcase for cracks.
12.16	____	____	Check cowl flaps for operation and security.
12.17	____	____	Run engine check for idle rpm and mag drop.
12.18	____	____	Check all engine compartment wiring for security, cracks in insulation, routing and termination.
12.19	____	____	Wash down and/or clean engine and engine compartment.
12.20	____	____	Check security and condition of all engine accessories.
			STEP 13: PROPELLER
13.01	____	____	Remove spinner and check for cracks and loose rivets.
13.02	____	____	Check prop for oil leaks and loose blades.
13.03	____	____	Inspect blades for nicks and damages.
13.04	____	____	Inspect hub for corrosion and security.
13.05	____	____	Repair minor nicks on leading edge of blades.
13.06	____	____	Clean and spray flat black on back of prop if needed.
13.07	____	____	Inspect governor for oil leaks and security.
13.08	____	____	Note: Any major repairs must be performed by an approved propeller repair station.
			STEP 14: MISCELLANEOUS
14.01	____	____	Make up list of applicable AD’s. Check and log compliance.
			STEP 15: LOGBOOKS AND MAINTENANCE CHECK FLIGHT
15.01	____	____	Per applicable FAA regulations, enter the inspection work performed in the: A. Airplane Logbook. B. Engine Logbook. C. Propeller Logbook.
15.02	____	____	Have owner / pilot preflight and fly airplane, perform maintenance check and enter in log.

Rmrks Code	Description
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