TB 1-1520-238-20-109
4.
Summary of the Problem.
a. The tailbooms of some AH-64A aircraft have been modified as part of ECP 1315. Part of this
modification consists of the addition of elastomeric mounts for the vertical stabilizer. Currently, there are no
published inspection or maintenance procedures in the AH-64A technical manuals supporting this
modification.
b. For manpower/downtime and funding impacts, see paragraph 12.
c. The purpose of this TB is to provide interim critical inspection and maintenance procedures until
changes are published in the AH-64A technical manuals.
5.
End Items To Be Inspected.
N/A.
6.
Assembly Components To Be Inspected. N/A.
7.
Parts To Be Inspected. N/A.
8.
Inspection Procedures.
NOTE
These inspection procedures must be used with the current
TMs, including the latest changes, until all applicable TMs have
been updated with the enclosed technical information.
a. Change TM 1-1520-238-PM as described below.
(1) Add Inspection 6A.
(a) In the Inspect Phase Nos. column, add "2,4 C".
(b) In the Inspection requirements column, add the following text:
6A. VERTICAL STABILIZER ELASTOMERIC MOUNTS FOR CRACKS OR
DISTORTION. MOUNTING BOLTS AND BARREL NUTS FOR DAMAGE
AND SECURITY. DRAIN CAVITY FOR DEBRIS AND OBSTRUCTIONS.
Access L510, R510
b. Change TM 1-1520-238-23-2, paragraph 2.102.6. as described below. (Renumber the current
version of 2.102.6.; its new number will be 2.102.7.)
(1) Add the following heading, paragraphs, subparagraphs, and notes:
Tailboom Elastomeric Mounts Inspection
a. Remove fairings L545 and R545 (paragraph 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.
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