STEMME S12 User Manual

DOCUMENT NUMBER:
L500-912.820 ISSUE JUL 20, 2016
AMENDMENT: 00
DATE: 
CHAPTERPAGE 539
MAINTENANCE MANUAL STEMME S12
5.5 SPECIAL INSPECTIONS
5.5.1 INSPECTION FOLLOWING A HEAVY LANDING OR A WING TIP LANDING
Following a heavy landing or a wing tip landing, the aircraft must be inspected extensively. The
inspection may be carried out by a skilled person, but, in case of obvious structural damage, by
an authorized inspector with the appropriate rating. The inspection program must be requested
from the manufacturer.
5.5.2 INSPECTION FOLLOWING AN IMPACT TO THE ROTATING PROPELLER
In the event of minor damage to the propeller blades (e.g. shortening of a propeller blade by less
than 0.03 m / 1.18 in – areas painted gray on both sides at the tips of the propeller blades are still
visible – ) the following procedure should be adopted:
1. Qualied sta must establish whether the propeller blades can be repaired or not. This is
not generally the case and the propeller blades have to be replaced.
2. The minimum requirement is that a 100 Engine Operating Hours Inspection is carried out
on the drive system in accordance with section 5.4.16 (as far as applicable).
3. After the propeller blades have been repaired or replaced, the drive system must be dy-
namically balanced, as laid down in A17-10AP-V/2-E Dynamic Propeller Balancing STEMME
S10 (see Aircraft Maintenance Manual Annex A).
In the event of major damage to the propeller blades (e.g. shortening of a propeller blade by more
than 0.03 m / 1.18 in – areas painted gray on both sides at the tips of the propeller blades are no
longer visible – ) the following procedure should be adopted:
1. The propeller blades must be replaced.
2. The propeller must be inspected by the manufacturer or an authorized workshop.
3. The drive system must be inspected by the manufacturer or an authorized workshop.
4. After an inspection has been carried out and the propeller blades have been replaced,
the drive system must be dynamically balanced, as laid down in A17-10AP-V/2-E “Dy-
namic Propeller Balancing STEMME S10“ (Aircraft Maintenance Manual Annex A).
In contrast to other aircraft, a shock-loading inspection of the engine in either event is not required
because of an integrated over-load protection in the engine and the freewheel clutch as an addi-
tional safety device. Moreover the extension drive shaft system in between propeller and engine
prevents the engine drive ange from bending loads in case of propeller contact with obstacles.

STEMME S12 Specifications

General

Brand	STEMME
Model	S12
Category	Aircrafts
Language	English