Scheduled Maintenance Checks; General Note - Rotax 912 Series Maintenance Manual

1) General note

This Chapter lists the periodic inspections which must be carried out after a specified
periods of operation.
Periodic inspections are those which must be performed at 50, 100, 200 and 600 hr.
intervals in accordance with Chapter 05-20, para. 2.
This means for instance that every 100 hr. of operation or 1 year whichever comes first,
a 100 hr. check must be carried out.
100h / 300h / 500h / 700h / 900h / 1100h
200h / 400h / 800h /1000h
600h
Additionally, a 25 hr. inspection must be performed at 25 hours of operation of a new
or overhauled engine.
NOTE:
Furthermore, Rotax recommends at each maintenance event the following checks (if
not already specified by the aircraft builder), because possible malfunctions could
influence engine operation unfavourably.
- Inspect engine compartment cover for evidence of overheating, including cover for
discoloration and warping.
- Inspect exhaust system for damage, including cylinder head for cracks and wear.
- Inspect fuel filter for contamination. Inspect for foreign particles including material of
fuel lines, sealing components, slivers (risk of misfiring).
- Verify aircraft battery for charge, including gravity of electrolyte (risk of starting
problems).
- Inspect oil contamination. Analyse the oil.
- Inspect radiator, oil cooler and hoses for damage, including for discoloration and
cracks.
- Inspect propeller for damages and unbalance. Carry out dynamical balancing
including verification of propeller track.
Effectivity: 912 Series
AIRCRAFT ENGINES
MAINTENANCE MANUAL
CHAPTER 05-20

SCHEDULED MAINTENANCE CHECKS

This maintenance schedule contains a column for a 50 hr. check. This
check is recommended by the manufacturer but not essential, with the
exception of oil change when operating with leaded AVGAS.
-> 100hr. inspection
-> 200hr. inspection
-> 600hr. inspection
05-20-00
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Rev. 1, Jan. 01/2002