TB 1--1520--238--20--123
a. Searchlights on the AH--64D aircraft have been failing because of increased vibration brought on
by a design relocation during production. This harsh environment causes some internal/external fasteners
to loosen.
b. For manpower/downtime and funding impacts, see paragraph 12.
c. The purpose of this TB is to ensure that all AH--64D aircraft searchlights are inspected for this vibra-
tion problem and that locking compound is applied to fasteners as presented in paragraph 9.
5.
End Items to be inspected. All Army AH--64 aircraft.
6.
Assemblies to be Inspected.
Nomenclature
Part Number
National Stock Number
Assembly, Searchlight
7--211B12031
6620-01-160-3527
Motor Assy
46-0956-3
Rotating Motor (B1) 25140
3A1536
Base Plate Assy
46--0851--1
Parts to be Inspected.
Nomenclature
Part Number
National Stock Number Quantity
Screw, machine
MS51958--62
14
AN960PD8L
2
Washer, flat
AN960JD10L
16
Cover, terminal
A6881
1
Screw, machine
MS35206--230
1
MS35206-232
2
Block, terminal
A-6906--1
1
Screw, machine
MS5206--226
1
Washer, lock
MS35338--41
5
Plate, mounting
46--0851--1
6620-01-022-1780
1
Screw, machine
MS24693S28
4
Washer
MS35338--41
4
Nut, hex
NAS671--6
4
Gearbox assy
46--0965--5
1
Cover,
B-6908--1
6620-00-930-8338
1
Plate, identification
46--0880--1
1
46--1113--1
1
Screw
MS3520-209
2
2
