TM 1-1520-238-23
Change 9
1-375
1.137.
SPECIAL INSPECTION CHECKLIST – continued
Helicopter Serial No.:
Date:
Area
No.
REQUIREMENT
EVERY
Item
Status
Special
Inspection
No.
2,3,4,7
11
(cont)
(1) Check outer skins from FS 370 to FS 547 for buckling and sheared
rivets.
(2) Check stringers from FS 370 to FS 547 for cracks and buckling.
(3) Check fuselage frame from FS 370 to FS 531 for buckling.
i. Wing mounts:
(1) Remove ammunition flat pack.
(2) Check interior wing mount castings for cracks. Use 10-power
magnifier and flashlight.
(3) Check exterior wing root areas for cracks and distortion.
j. Check pylon wing mounts in case of stores or pylon ground strike:
(1) Remove stores and pylons.
(2) Check pylon mounting areas under wings for cracks and distortion.
k. Engine mounts:
(1) Open access doors LN1, RN1, LN3, RN3, LN4, RN4, T250L, T250R,
T290L, T290R, and L325.
(2) Check inboard engine mount support brackets for cracks or distortion.
(3) Check nacelle engine mounts for cracks or distortion.
(4) Secure access doors LN1, RN1, LN3, RN3, LN4, RN4, T250L,
T250R, T290L, T290R, and L325.
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