TM 1-1520-238-23
Change 6
1-402.1
1.137.
SPECIAL INSPECTION CHECKLIST – continued
Helicopter Serial No.:
Date:
Area
No.
REQUIREMENT
EVERY
Item
Status
Special
Inspection
No.
5
37
125 FLIGHT HOURS, OR MORE OFTEN IF REQUIRED.
INSPECT SHAFT DRIVEN COMPRESSOR AND CLEAN SDC TOTAL PRESSURE
SENSE LINE FILTER AND SURGE VALVE PRESSURE FILTER.
a. Remove shaft driven compressor (para 7.120).
(1) Inspect SDC in accordance with (para 7.120) steps n, o, p, q, r, and
s.
b. Remove total pressure sense line and surge valve pressure filters (para
7.125).
c. Clean total pressure sense line and surge valve pressure filters
(para 1.47).
d. Install total pressure sense line and surge valve pressure filters
(para 7.125).
e. Install SDC (para 7.121).
5
38
10 HOURS/14 DAYS DURING DESERT OPERATIONS
a. Replace aft avionics bay filter (para NO TAG).
b. Replace APU air filter (para 16.36).
3,4
39
Deleted.
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