MAULE AEROSPACE TECHNOLOGY, INC.
MAINTENANCE MANUAL
FOR
MT-7-420
9/02
7
CAUTION: If airplane is subject to excessive stress, i.e., heavy loads, adverse wind
conditions, rough landings, etc., take special care in examining wing skins for any
cracks. If any are found, repair before further flight in accordance with AC 43:13 and
factory drawings. (Do not replace any countersunk rivets with buttonhead rivets in wing
because it is not approved.)
5. Check aileron and flap skins for cracks.
6. Check the security, operation and general condition of all control surfaces.
7. Check main landing gear for condition and brakes for leakage and wear.
8. Check nosewheel landing gear oleo struts for indication of oil leaks. See Section III
for Service Instructions.
9. Check general condition of nosewheel, steering linkage, scissors and shimmy dam-
per.
10. Check tires for inflation and cuts.
11. Drain sumps of fuel tanks, checking for contamination and water.
At 100 Hours Total Time and every 100 Hours thereafter, perform the 50 hour inspection
plus the following:
1. Remove right and left kick panels in cockpit, windshield side post covers and panels
below seat fronts. Examine protective rudder cable guide tubes, (located behind
kick panels), if installed and attaching clamps, bolts and nuts for security and gen-
eral condition.
2. Examine all front cockpit electrical connections and wires, fuel lines and fittings,
control cables attachments and pulleys for security, leaks, chafing, etc.
3. Remove rear seat, rear floorboard and panel behind baggage compartment.
4. Inspect all structure, all control cables, pulleys, fairings and electrical connections
and wires for security, chafing and corrosion.
5. Open zippers in headliner and inspect all control cables, pulleys, fairleads and elec-
trical connections and wires for security and chafing.
6. Remove wing root fairings and inspect control cables, fairleads, fuel lines and con-
nections, and electrical wires and connections for security, chafing and leaks. In-
spect wing attach points for security and corrosion.
