Summary of the Problem. - TB-1-1520-240-20-1420002

TB 1--1520--240--20--142

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 Technical Bulletin, Depot and Materiel Activity Commanders will ensure the materiel condition tags of

all items in all condition codes listed in paragraphs 6 and 7 are annotated to read: "CH--47--02--ASAM--01 (TB

1--1520--240--20--142), inspection of the tunnel cover strut assembly not complied with."

(1) Wholesale Stock -- upon receipt of this Technical Bulletin, Depot and Materiel Activity Com-

manders will ensure all items in condition codes // A//, // B//, //C//, // D//, and // E//, listed in paragraphs 6 and

7, are 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.

(2) Retail Stock -- Upon receipt of this message, Commanders and Facility Managers maintain-

ing retail stock at installation level and below shall contact the supported aviation unit to perform the proce-

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

in accordance with paragraph 10d.

f. Components/Parts in Work (Depot Level and Others) -- Depot and other Maintenance Activity Com-

manders will ensure items listed in paragraphs 6 and 7 are not issued until they are in compliance with this

Technical Bulletin.

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

next 10 flight hours but no later than 18 October 2001.

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

14a (1) no later than 26 October 2001.

Summary of the Problem.

a. A report has been received from the field documenting that the pin in a tunnel cover strut assembly

was not staked. If the pin becomes dislodged from the strut assembly, the strut halves and/or the pin can

cause damage to the hydraulic lines and sync shafts.

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

c. The purpose of this Technical Bulletin is to --

(1) Remove from service all strut assemblies manufactured by Precision Standard.

(2) Perform a one time inspection of all strut assemblies manufactured by NORCO.

End Items to be inspected. All H--47 series aircraft.

Assembly Components to be Inspected.

NOMENCLATURE

PART NUMBER

NATIONAL STOCK NUMBER

TUNNEL COVER ASSY

114S2915--70

1560-00-150-2708

TUNNEL COVER ASSY

114S2915--72

1560-00-150-2710

Parts to be Inspected.

NOMENCLATURE

PART NUMBER

NATIONAL STOCK NUMBER

STRUT ASSEMBLY

A297--1

1560-00-168-5725

STRUT ASSEMBLY

114S2915--61

N/A

Inspection Procedures .

NOTE

Supplemental information for this Technical Bulletin can be viewed at

(use lower case letters only)

"www.redstone.army .mil/sof/suppl/c47a0201.pdf".