DOCUMENT NUMBER:
L500-912.820 ISSUE JUL 20, 2016
AMENDMENT: 00
DATE: 
APPROVED SECTIONPAGE 43
MAINTENANCE MANUAL STEMME S12
4.3 COMPONENT REPLACEMENT AND OVERHAUL LIMITATIONS
This chapter denes replacement intervals and maintenance requirements for aircraft
components, systems, and structures determined to be life-limited or to be monitored by
scheduled maintenance.
Unless otherwise specied, the following components must be overhauled, rebuilt, or replaced
with components that have service life remaining, within the life-time limits specied. To
monitor remaining useful service life-time of components, maintenance work, e.g., overhauling,
rebuilding, repairing, or replacing each item, must be recorded in accordance with applicable
national regulations.
The IPC chapters mentioned below refer to the Illustrated Parts Catalog (IPC) for Type S10, Model
S12 Doc.-No- L530-912.830 or latest revision.
MAXIMUM ALLOWABLE OPERATING TIMES
No. Part/Assembly/
Equipment
Manufacturer STEMME
p/n
IPC
Chapter
Overhaul Replacement Notes
1 Variable pitch
propeller
STEMME AG 11AP-V 61-10 5 years - (1)
(2)
2 Propeller hub STEMME AG 10AP-V01 61-10 - 2000 hr -
3
Propeller fork
and fasteners/
attachment
components
STEMME AG 10AP-V88,
10AP-V76,
10AP-V77,
10AP-V78,
10AP-VU
61-10 200 hr 400 hr (1)
4 Propeller gear
box (gear
wheels)
STEMME AG 11AG 72-10 1000 hr - (1)
5 Propeller gear
box mounting
STEMME AG 11AA 72-10 1000 hr - (1)
(3)
6 Propeller Gear
Box mounting
elastomer parts
STEMME AG 11AA-S
11AA-36
72-10 - 12 years (1)
(3)
7 Centrifugal
clutch
(3 Flyweights)
STEMME AG 12AK 72-10 400 hr - (1)
8
Drive shaft
STEMME AG 10AS-07
10AS-W
10AS-F
72-10 800 hr - (1)
9 Flexible disk of
the drive
shaft system
(Cardan Joints)
STEMME AG 11AS-09 72-10 - 12 years (1)
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