BRP-Rotax
MAINTENANCE MANUAL LINE
PROPELLER GEARBOX WITH INTEGRATED OVERLOAD CLUTCH
General note After any propeller strike the following inspections must be performed before operation
can continue.
See also Maintenance Manual Heavy for the engine type 912 i Series
1. Inspect the engine for damage. If any damage is detected, inspect, repair or overhaul the
whole engine in accordance with the relevant Manual. Inspect all systems for correct
functioning.
2. Inspect add-on components e.g. propeller governor, vacuum pump, external alternator. Ob-
serve the manufacturers instruction(s).
3. Observe all relevant directives from the aircraft manufacturer.
4. Remove the fuel pump and gearbox. Perform a crankshaft out- of roundness inspection on
PTO side. See Chapter 72-00-00 Heavy Maintenance. If measuring up inside the value of
0.08 mm continue and also perform a crankshaft distortion inspection see Chapter 72-00-00.
If distortion is inside the value of 2 degree, continue as following:
5. Remove and replace the roller bearing in crankcase for propeller shaft.
See Chapter 72-00-00 Heavy Maintenance.
6. Remove the crankshaft gear for NDT inspection. See Chapter 72-00-00 Heavy
Maintenance.
7. Inspect, repair and perform overhaul of the whole gearbox in accordance with Chapter 72-
00-00 Heavy Maintenance.
8. Perform NDT inspection upon housing and metal parts e.g. propeller shaft and gear set.
9. Re-install crankshaft gear and check the crankshaft for out-of roundness.
See Chapter 72-00-00 Heavy Maintenance.
10. Re-install the gearbox. See Chapter 72-00-00 Heavy Maintenance.
11. Perform an engine test run in accordance with Chapter 12-20-00.
12. Release back to service and make an entry in engine log book detailing the work carried out.
Effectivity: 912 i Series
Edition 2/Rev. 0
05–50–00
Page 11
September 01/2018
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