TM 1-1520-238-23
Change 11
1-371
1.137.
SPECIAL INSPECTION CHECKLIST – continued
Helicopter Serial No.:
Date:
Area
No.
Special
Inspection
No.
REQUIREMENT
EVERY
Item
Status
2
1
6 MONTHS
Weight check portable fire extinguisher (TM 1-1500-204-23).
1
2
12 MONTHS
Check magnetic compasses for liquid discoloration and proper calibration
(TM 1-1500-204-23).
ALL
3
12 MONTHS
Inventory helicopter (DA PAM 738-751).
ALL
4
24 MONTHS
Weigh helicopter (AR 95-1).
2
5
100 HOURS/120 DAYS (WHICHEVER COMES FIRST)
Remove and send aircraft batteries BB-564 and BB-664 to battery shop (AVIM)
for servicing (TM 11-6140-203-23).
2,4,5,6,7
6
25 HOURS (Aircraft Operating Time)
Obtain oil samples (TB 43-0106) from:
a. No. 1 engine nose gearbox
b. No. 2 engine nose gearbox
c. Main transmission
50 HOURS (Aircraft Operating Time)
NOTE
Particular attention must be given to the welded joints.
Inspect APU mounts for cracks, dents, distortion, loose bolts and corrosion.
None Allowed.
a. Inspect the entire length of each weld line for cracks and
other abnormalities.
b. Inskpect all attachment lugs for cracks and looseness. None Allowed.
c. Inspect all attachment points for loose or missing hardware. None
Allowed.
d. Inspect all bushings and hardware for missing bushing and proper torque.
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