Every 100 hour or six months (whichever comes first)
Clean the aircraft: exterior and interior and remove the rear fuselage bottom access door.
Make a thorough inspection of the whole aircraft,
inspecting for any damage, wear or
corrosion.
Front of aircraft:
Check and inspect the following: Engine (see engine manual), controls
and hoses, engine mount, propeller, battery, exhaust,
radiator, firewall, nose gear and
wheel. Check that all bolts and nuts are tight and safetied.
Fuel system:
Check for leaks, check condition and safety of lines and valve operation.
Clean, re-install (or replace) and secure all filters, gascolator and tank finger screen.
Fuselage:
Check skins
and internal structure for loose rivets, bolts,
corrosion
and
buckling due to miss-handling or over-stressing.
Check that the drain holes in the
bottom of the fuselage are not plugged up.
Controls:
Inspect for looseness, wear, fair-leads and terminals.
Wing & Struts:
Check skins, replace loose rivets, check for corrosion and buckles (from
mishandling), inspect leading edges and tralling edges.
Check bolts and safety (struts, jury
struts, wing root attachments, slats and flaperons). Check control surface stops and flaperon
interconnection.
Tail:
Inspect skins and rivets and look for and correct corrosion etc. Check attachment of
tail sections to fuselage, cable ends, trim tab, etc. Check control surface stops.
Landing gear:
Refer to 25 hour check list
After the thorough inspection of the aircraft, and after having done the required
maintenance and/or repairs, re-install the rear fuselage access door and run the engine for
smooth operation. Check all control hinges and moving parts for wear. Replace when
clearance exceeds maximum wear of 0.6 mm.
Oil the following (standard “motor” oil):
all bearings
all flaperon hinge points
all flaperon control rods *
roll control torque tube
elevator and trim (trim + control)
all rudder hinge points
all elevator bellcranks *
flaperon mixer *
all pitch control rod ends *
all control stick bearings (in cabin)
pedals (3 bearings, cable ends, brake pedals)
flaperon and trim controls
all cable ends (also *)
all throttle bearings
choke control (if applicable)
all door hinges and latch
* inside fuselage - access through fuselage door.