TM 1-1520-238-23
Change 10
1-402.3
1.137.
SPECIAL INSPECTION CHECKLIST – continued
Helicopter Serial No.:
Date:
Area
No.
REQUIREMENT
EVERY
Item
Status
Special
Inspection
No.
4
41
(cont)
c. Check the entire length of stringers 2L and 2R (7-311114181-17 and -18)
located under the vertical stabilizer captive mounts, for cracks or working
rivets.
d. Check all additional stringers attached to the FS 530 and FS 547 frame
assemblies, from approximately 6 INCHES along the stringer to the
attachment point of FS 530 and FS 547 for cracks.
e. Check fuselage exterior surfaces at, and adjacent to, FS 530 and FS 547
for cracks and working rivets.
f. Install fairings R545 and L545 (para 2.2).
4
41A
250-HOUR PHASED INSPECTION
TAILBOOM ELASTOMERIC MOUNTS INSPECTION
a. Remove fairings L545 and R545 (para 2.2).
b. Check four elastomeric mounts cavity drain holes for debris or plugged up
condition.
(1) Remove debris shield from elastomeric mount.
(a) Remove two screws from two retaining clip debris shield and
mount. Remove shield. Retain hardware for reinstallation.
(2) Inspect all four mounts cavity drain holes for debris or plugged up
condition.
NOTE
Do not use alcohol or MEK to clean mount cavity drain.
Do not pour solvents into mount cavity drain.
(a) If debris or plugged up condition exist, clean cavity with
compressed air (para 1.47).
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