Supplement POH
Cessna 172 R&S
(FAA-Version)
Page 8-2
Issue 3
Revision 1, Mar. 2022
GEARBOX OIL
To ensure the necessary propeller speed, both engine variants
are equipped with a reduction gearbox filled with gearbox oil.
(refer to section 1 of this supplement for specification)
The level can be checked through a viewing glass on the lower
leading edge of the gearbox. To do so, open the flap on the left
front side of the engine cowling.
The drain screw is located at the lowest point of the gearbox. A
filter is installed upstream of the pump, as well as microfilter in
the Constant Speed Unit. Check the gearbox for sealing after
the first 5 hours of operation (visual inspection). Regular checks
as well as oil and filter changes have to be performed in
accordance with the Operation and Maintenance Manual.
See OM-02-01 for the TAE 125-01 engine or OM-02-02 for the
TAE 125-02-99 engine.
The Supplement of the Aircraft Maintenance Manual has to be
considered as well. See AMM-20-01 for the TAE 125-01 engine
or AMM-20-02 for theTAE 125-02-99 engine.
WARNING: It is not allowed to start the engine with low
gearbox oil level.
CAUTION: Between scheduled maintenance topping-
up gearbox oil should not be necessary. If
low gearbox oil level is detected, inform
your service centre immediately.
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