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Maintenance Checklists to Download
Click Here for the original Aero Commander Chapter 7 checklist. We are working on an improved and updated version and will post it when it becomes available.
Click Here for the new Interim Periodic Inspection Checklist in Adobe pdf format. We are still working on the nuances but it is a lot better than the original.
Inspection Items
The following items were copied out of a Meyers Owner's Association Newsletter. They are reprinted for ideas only. As we refine the new checklist, all items will be incorporated into the checklist. I have corrected a few but have not gone over them extensively.
25 HOUR:
1.
Oil Cooler Damper Arm: Check to be sure arms are tight to the cooler to
eliminate vibration.
2.
Air Box Blow in Door Hinge & Brackets: Check. Inspect for
cracks at offset bends.
ANNUAL:
1.
Nose Gear Collar (top bolt): Check tightness and for cracks.
2.
Gear Down Switch (Starter button lockout): Check operation.
3.
Hydraulic lines aft of firewall: Check for leaks at annual or if
fluid under belly.
4.
Gear Bushings (Oilite Bronze): Check for play at annual or if
shimmy occurs.
5.
Inboard Gear Door Cable: Check tension at 60 lbs.
6.
Check Eye Ball Joints: Slight looseness of bolt through the ball
end, not the ball itself. If too tight, can cause cracking. If the
ball is loose, replace.
7.
Mufflers: Check for cracks, mostly at rear. Never compress
the springs too tight. DO NOT WELD 1NSIDE HEAT MUFFS.
8.
Landing Lights: Check for loose or broken bolts & nut plates.
9.
Landing Gear Overcenter Lock pressure: Check for 50 lbs +/‑ 5
lbs.
10.
Trim Screw jack (aft fuselage): Lubricate every 500 hours.
11.
Gear Up locks: Check for frayed or stretched cable. Lubricate
with wheel bearing grease.
12.
Throttle & Mixture Cables: Check tightness & safety wire on
bolts holding standoff brackets on rear of intake manifold. Pull bolt and
check for wear. Lubricate. If hole is worn, drill and ream to
5/16" and install bushing and new bolt.
13.
Air Box & Filter: Check box for cracks at corners and upper
right area.
14.
Rudder Spar: Check for cracks at hinge attach points (mostly upper
hinge). Check carefully! The cracks occur between the rivet holes
and can't be seen from the outside until they get fairly long.
15.
Elevator Spar: Check for cracks at hinge attach points (mostly
right outboard).
16.
Main Fuel Lines (suction): Check. Replace with Aeroquip or
Teflon every 5 years.
17.
Nose Gear Uplock: Check 3/16" diameter top bolt which attaches
the release cables in the nose gear up latch hook and replace if worn.
Push old bolt out with new bolt with all held in place. (Make a bullet to
do this, DO NOT simply push it out with a new bolt). Bolt should be finger
tight with new cotter pin. Check every 500 hours & note in log
book. ( If this bolt breaks, the nose gear will not come down.)
18.
Front Elevator Push Pull Tube: Check for corrosion.
19.
Horizontal tube that actuates Nose Gear Door: Check for wear.
20.
Nose Strut: Check centering cables.
21.
Fuel Tank Vent Lines: Use hose and manually blow to see if you get
back pressure (5 psi maximum).
22.
Nose Gear A Frame: Where retraction cylinder attaches to A Frame
check for cracks.
23. Flap Bell Crank (located bottom aft center panel): Visually check the top of the bell crank with a mirror.
ONE TIME:
1.
Main Gear Scissors Bolts: Check. Should face inboard
(particularly the bottom bolt. Bottom bolt head should face wing
tip). The upper scissors bolt must have nut facing outboard. Tighten
bolt (nut) to snug and back off one serration of the nut; insert new cotter pin.
INFORMATION:
1.
Aileron Gap Seals: DON'T!
2.
Flap, Rudder, & Elevator Gap Seals: OK
3.
Nose Tires: New low profile tires may not let Nose Gear lock in the
up position. Check manual for proper tire diameters.
4.
Out-gassing from some vinyl will cause crazing on Plexiglass.
5.
Main Gear Struts: Adjusting height to 4" 5" or higher may
reduce scissors breakage.
6.
Defroster Vents: Making a deflector to spread hot air will prevent
crazing of Plexiglass.
7.
Winch towing: Use care pulling airplane by tail‑skid.
This may stretch the attachment of the monocoque tail cone to the
aircraft. For winching, it is better to attach the winch cable to the Nose
Gear towbar under the aircraft.
8.
Leading Edge Stripes: If applied to wing, clear‑coat to level
the surfaces to prevent disruption of airflow.
9.
"Sloshing" Fuel Tanks: DO NOT DO THIS! You can't
ever weld them after "sloshing" with sealer.
Paul M. Whetstone, President
Email pwhetstone@meyersaircraft.com
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