TB1--1520--238--20--104
(1) Wholesale Stock -- Report receipt of this TB IAW para 14c(1). Upon receipt of this TB all ser-
viceable items (condition codes //A//, //B//, //C//, //D//, and //E//) listed in para 6 and 7 located in wholesale
depot storage shall be placed in condition code //J// and tagged with a suspended tag/label-- materiel, DD
Form 1575/DD Form 1575--1. Do not remove original condition tags. Report compliance with this TB IAW
(2) Retail Stock -- Report receipt of this TB IAW para 14c(2). Upon Receipt of this message Com-
manders and others maintaining retail stock at installation level and below shall contact the supported aviation
unit to perform the inspection required by para 8 and the correction procedures of para 9 on discrepant materi-
el. Disposition of discrepant materiel will be IAW para 10. Report compliance with this TB IAW para 14d(2)
g. Components/Parts in work (Depot Level and Others) -- Items listed in para 6 in work will not be issued
until compliance with this TB.
2.
Task/Inspection Suspense Date. Complete the inspection IAW para 8
within the next 10
flight hours,
but NLT 28 Feb 00, and report IAW para 14b as applicable.
Reporting Compliance Suspense Date. N/A.
4.
Summary of the Problem.
a. A number of hanger bearing assemblies reworked by Corpus Christi Army Depot (CCAD) have been
found to be below minimum nutation torque requirements. This problem has been corrected at CCAD, how-
ever, approximately 150 suspect hanger bearing assemblies have been delivered.
b. Manpower/Downtime and funding impacts see para 12..
c.
The purpose of this TB is to:
(1) Locate, inspect and repair suspected improperly assembled hanger bearing assemblies.
(2) Add nutation and nut torque check requirements to TM 1--1520--238--23, TM
1--1520--238--PM, and AH--64D IETM.
5.
End Items to be inspected. All AH--64 series aircraft.
Assembly Components to be Inspected.
NOMENCLATURE
PART NUMBER
NATIONAL STOCK NUMBER
Forward Hanger Bearing Assembly
7--31135008
3130--01--188--4531
Forward Hanger Bearing Assembly
7--31135008--3
3130--01--333--8491
Forward Hanger Bearing Assembly
7--31135008--5
3130--01--333--8491
Aft Hanger Bearing Assembly
7--21135007
3130--01--161--3962
Aft Hanger Bearing Assembly
7--21135007--3
3130--01--333--8490
Aft Hanger Bearing Assembly
7--21135007--5
3130--01--333--8490
2