TM 1-1520-238-23
Change 9
1-373
1.137.
SPECIAL INSPECTION CHECKLIST – continued
Helicopter Serial No.:
Date:
Area
No.
REQUIREMENT
EVERY
Item
Status
Special
Inspection
No.
2,3,4,7
11
HARD LANDING
If cracks are suspected, perform nondestructive inspection (TM 1-1520-264-23).
a. Main and tail landing gear wheels and tires:
(1) Check wheels for cracks or distortion. Use 10-power magnifier for
crack check.
(2) Check tires for leakage, tears, and other damage.
(3) Check tire pressures.
b. Main and tail landing gear shock struts:
(1) Check for cracks or distortion. Use 10-power magnifier for crack
check.
(2) Check for improper extension and seal damage (para 3.28). Raise
landing gear clear of ground.
(3) Check fluid levels.
(4) Check strut charge pressures.
(5) Check strut hardware for torque stripe movement (if applied), cracks,
distortion, or other stress damage.
c. Tail landing gear shock strut:
(1) Check for obviously collapsed condition or hydraulic fluid leakage.
(2) Check for expelled silicon rubber material around orifice at lower end
of strut if strut appears normal.
(3) Replace tail landing gear shock strut (para 3.38) if strut is collapsed,
leaking hydraulic fluid, or has silicon expelled around orifice.
(4) Jack tail boom (para 1.69) if no material is visible around orifice.
(5) Service upper piston if required (para 1.42).
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