SPECIAL INSPECTION CHECKLIST continued
Helicopter Serial No.:
CRITERIA FOR REPLACEMENT
a. If one laminate, other than a previously trimmed top or bottom laminate is
discrepant, strap pack assembly is unserviceable, but a one time flight to
an adequate AH-64 maintenance facility is authorized. This flight shall not
exceed two hours.
b. If two laminates, other than a previously trimmed top or bottom laminate
are discrepant, strap pack assembly is unserviceable and no flights are
20 FLIGHT HOURS
PERFORM MAIN ROTOR STRAP PACK BORESCOPE INSPECTION:
This inspection to be done in conjunction with special inspection #27.
a. Perform borescope inspection (para 5.34A).
10 FLIGHT HOURS
CHECK ENCU FILTER FOR CONTAMINATION:
a. Clean ENCU filter element (para 13.12).
10 HOURS/14 DAY
If cracks are suspected, perform nondestructive inspection (TM 1-1520-264-23).
On PN 7-311310001-5, -7, -13, -15, -21, and -25 main transmission, accomplish
a. Remove access panels L200 and R200.
b. Open access doors T250L, T250R, T290L, T290R, and L325.
c. Thoroughly clean exteriors of main transmission cover and intermediate
d. Check intermediate gear support left and right side gear covers (ears) and
flange bolt hole bosses and webs for evidence of cracks or oil leakage.
Use 5-power magnifier.
e. If cracks are suspected, perform nondestructive inspection
f. Secure access doors T250L, T250R, T290L, T290R, and L325.
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