25
AIRFRAME MAINTENANCE
RETIREMENT LIFE OF CRITICAL COMPONENTS
Replace the following components at the hours or number of landings (whichever comes first)
as indicated.
After the first 1000 hours and at every 500 hours thereafter, the entire undercarriage must be
stripped down for a complete inspection of every part. If components are corroded, the
replacement period must be shortened by 50%, and all bolts and nuts must also be replaced as
soon as excessive corrosion is noticed.
UNDERCARRIAGE
PART
HOURS
LANDINGS
Hang block
1 000
10 000
Pylon
1 000
10 000
Brake cable assembly
1 000
10 000
Throttle cable assembly
1 000
10 000
All hang bolts, nuts and rubbers
1 000
10 000
Boom
1 500
10 500
Rear shock tube
1 000
10 000
Prop bolts and nuts
1 000
10 000
Engine bracket
1 500
15 000
Engine mounting plate
1 000
10 000
Exhaust rubber mounts
1 000
10 000
Engine rubber mounts
1 000
10 000
Ignition switches and wiring
1 000
10 000
Seat side tubes
2 000
20 000
Rear axle
2 000
20 000
Choke cable assembly
2 000
30 000
Radiator mount rubbers
1 000
10 000
