Maintenance Manual STEMME S10-VT
Date of Issue: Dec. 19, 1997
Page: 4-3
Amendment No.: 23
Date: Jan. 29, 2015
A4011121_B23.doc
Doc. No. A40-11-121
4.3 Component Replacement and Overhaul Limitations
This chapter outlines the replacement intervals and maintenance requirements for aircraft components,
systems, and structures determined to be life
–
limited or to require monitoring through scheduled
maintenance.
Unless otherwise specified, the following components must be overhauled, rebuilt, or replaced with
components that have service life remaining, within the life limits specified. To monitor remaining useful
service life of components, maintenance work, e.g., overhauling, rebuilding, repairing, or replacing each item,
must be recorded according to applicable national regulations.
The referred IPC-Chapters refer to the Illustrated Parts Catalog for Type S10, STEMME Doc. no. A44-10-00,
(2012) or its latest Revision
Maximum Allowable Operating Times
No. Part/Assembly/ Equipment
Manufacturer
Part No.
(STEMME)
IPC
Chapter
Engine hours or calendar
Notes
Overhaul Replacement
1 Variable pitch propeller
STEMME
11AP-V
61-10
5 years
-
(1)(2)
2 Propeller hub
STEMME
10AP-V01
61-10
-
2000 hr.
3
Propeller fork and
fasteners/attachment
omponents
STEMME
10AP-V88,
-V76,
-V77,
-V78,
-VU
61-10
200 hr.
400 hr.
(1)
4 Front Gear Box (cog wheels)
STEMME
11AG
72-10
1000 hr.
-
(1)
5 Front Gear Box mounting
STEMME
11AA
72-10
1000 hr.
-
(1)(3)
6
Front Gear Box mounting
elastomer parts
STEMME
11AA-S
11AA-36
72-10
-
12 years
(1)(3)
7 Centrifugal clutch (3 flyweights)
STEMME
11AK
12AK
72-10
400 hr.
-
(1)
8 Driveshaft
STEMME
10AS-07
10AS-W
10AS-F
72-10
800 hr.
-
(1)
9
Flexible disk of the drive
shaft system (Cardan Joints)
STEMME
11AS-09
72-10
-
12 years
NOTES:
(1) Overhauls of STEMME
–
manufactured components may only be performed in accordance with
manufacturer
–
approved data.
(2) Under extreme environmental conditions (hot, dusty) grease of the propeller blade bearings as part of the
overhaul can be required more frequent if indicated so during Annual Inspection.
(3) Within the variable pitch propeller assembly there are different Overhaul and Replacement intervals
defined for the different mechanical components. Because of that the respective components are sorted
by their applicable TBO/TBR.
(4) If the limitation is given in engine operating hours and in a calendar period, the first occurring case
applies for the affected components.
NOTE:
Even under ideal conditions, replacement or overhaul of parts or components may be required before
attaining the Chapter Four life limits. Even life
–limited parts are subject to “on–condition” inspection
before reaching TBO intervals.
