Maintenance Manual STEMME S10-VT
Date of Issue: Dec. 19, 1997
Page: 5-21
Amendment No.: 23
Date: Jan. 29, 2015
A4011121_B23.doc
Doc. No. A40-11-121
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
30 mm / 1.18 in.
–
areas painted grey on both sides at the tips of the propeller blades are still visible
–
) the
following procedure should be adopted:
1. Qualified staff 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 dynamically
balanced, as laid down in A17-10AP-V/2-
E “Dynamic Propel
ler Balancing STEMME
S10“ (Maintenance
Manual Annex A).
In the event of major damage to the propeller blades (e.g. shortening of a propeller blade by more than
30 mm / 1.18 in.
–
areas painted grey 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 authorised workshop.
3. The drive system must be inspected by the manufacturer or an authorised workshop (see Chapter 4,
notes 3 and 6).
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
“
(Maintenance Manual Annex A).
In contrast to other a/c, a shock-loading inspection of the engine in both events is not required because of an
integrated over-load protection in the engine and the freewheel clutch as an additional safety device.
Moreover the extension drive shaft system in between propeller and engine prevents the engine drive flange
from bending loads in case of propeller contact with obstacles
