TB1--1520--238--20--124
code "J" and tagged with a suspended tag/label--materiel, DD Form 1575/DD Form1575--1. Do not remove
original condition tags. Report compliance with this TB IAW paragraph 14b(2) NLT 11 April 2002.
(2) Retail Stock -- Report receipt of this TB IAW para 14c(1) NLT 4 April 2002. Upon Receipt of
this message commanders 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 materiel. Disposition of discrepant materiel will be IAW para 10. Report compliance with this
TB IAW para 14d(2) NLT 11 April 2002.
f. Component/Parts in Stock Including War Reserves at All Levels (Depot and Others). Items listed
in para 7 in work will not be issued until compliance with this TB.
2. Task/Inspection Suspense Date. Complete the inspection IAW paragraph 8 within 10 flight hours but
NLT 11 April 2002 and report IAW paragraph 14a(2) NLT 15 April 2002.
3.
TAMMS Reporting Compliance Suspense Date. Report compliance IAW 14a(1) NLT 4 April 2002.
4.
Summary of the Problem.
a. History-- Some recently delivered AH--64D aircraft have been received with improperly manufac-
tured bellcrank support brackets, which allow contact between the tail rotor bellcrank and the support bracket.
This issue affects both A and D model aircraft.
b. For manpower/downtime and funding impacts, see paragraph 12.
c. The purpose of this TB is to:
(1) Conduct an initial inspection and temporary repair of bellcranks and bellcrank support brack-
ets with signs of contact.
(2) Perform a recurring inspection for bellcranks and brackets with signs of contact.
(3) Perform a permanent repair of brackets without a cutout at the next Phase inspection.
5.
End Items to be inspected. All AH--64 series aircraft.
6.
Assembly Components to be Inspected. N/A
7.
Parts to be Inspected.
NOMENCLATURE
PART NUMBER
NATIONAL STOCK NUMBER
Bracket, Control
7--311523003--5
1615--01--251--9391
Bracket, Control
7--311523003--BSC
1615--01--251--9391
Bellcrank
7--311523014--5
1680--01--224--6688
Bellcrank
7--311523014--BSC
1680--01--224--6688
8.
Inspection Procedures.
NOTE
Prior to beginning the procedures IAW Paragraph 8 and 9, contact the LAR for all re-
quired diagrams and repair instructions.
a. Remove access panel L200 IAW TM 1--1520--238--23 or IETM.
b.
Determine the configuration of the bellcrank support bracket.
(1) A correctly manufactured bellcrank support bracket, P/N 7--311523003--5, has a reduced
section (cutout) on one side of the bathtub area of the fwd inboard (inbd) mounting bolt. The reduced section
allows clearance for the bellcrank at maximum right pedal.
(2) The incorrectly manufactured bellcrank support bracket does not have the reduced area (cut-
out) on the bathtub area of the fwd inbd mounting bolt. The inbd leg of the counterweight bellcrank arm may
contact the bellcrank support bracket at full right pedal.
2
Previous Page
