Summary of the Problem. - TB-1-1520-240-20-1470002

TB 1-1520-240-20-147

(2) Ferry status - same as paragraph 1a.

d. Maintenance Trainers (Category A and B). Same as paragraph 1a.

e. Component/Parts in Stock at all levels (depot and others) including War Reserves - upon receipt

of this message, depot and materiel activity commanders will ensure the materiel condition tags of all items

in all condition codes listed in paragraph 6 are annotated to read: "CH-47-02-ASAM-03 (TB

1-1520-240-20-147) inspect fuel control relay box not complied with."

(1) Wholesale Stock -- N/A.

(2) Retail Stock -- upon receipt of this message, commanders and facility managers maintaining

retail stock at installation level and below shall contact the supported aviation unit to perform the procedures

required in accordance with paragraphs 8 and 9 on suspect materiel. Dispose of discrepant materiel in accor-

dance with paragraph 10. Report compliance iwth this message in accordance paragraph 14c (2) no later than

25 June 2002

f. Components/Parts in Work (depot level and others) - depot and other maintenance activity com-

manders will ensure items listed in paragraph 7 are not issued until they are in compliance with this message.

2. Task/Inspection Suspense Date. Complete the inspection in accordance with paragraph 8 within 10

flight hours but no later than 26 June 2002 and report in accordance with paragraph 14A(2) no later than 2

July 2002.

3. TAMMS Reporting Compliance Suspense Date. Report compliance in accordance with paragraph

14a(1) no later than 2 July 2002.

Summary of the Problem.

a. This ASAM results from a Category I deficiency report. A CH-47D experienced an inoperative right

hand side main aft fuel boost pump during flight caused by improper manufacture/assembly of the wiring har-

ness in the fuel control relay box. The wiring did not have terminal lugs installed, wire identification was im-

properly marked, and wire ends were directly wrapped and attached to the relay screws. In this particular relay

box, six (6) wires were completly broken and one (1) wire was partially broken.

b. For manpower/downtime and funding impacts, see paragraph 12.

The purpose of this Technical Bulletin is to:

(1) Inspect for improperly manufactured fuel control relay box.

(2) Repair or replace as required defective fuel control relay box.

End Items to be inspected. CH-47D/CH-47F/MH-47D aircraft. (MH-47E aircraft do not use this box)

Assembly Components to be Inspected.

PART NUMBER

NATIONAL STOCK NUMBER

NOMENCLATURE

Relay assembly

145E2195-1

5945-01-298-7845

Parts to be Inspected.

NOMENCLATURE

PART NUMBER

NATIONAL STOCK NUMBER

Terminal, lug

BACT12AC2

5940-00-204-8966

8. Inspection Procedures.Open the fuel control relay box cover, TM 55-1520-240-23-8, task 10-116.1,

and inspect wiring and connections for proper assembly and installation of the wiring harness and terminal

lugs.

a. If the wiring harnesses are properly marked and terminal lugs and connections are properly marked

and connected, the inspection is complete and the red horizontal dash //--// entry may be cleared.