Summary of Problem. - TB-1-1520-237-20-2390002

TB 1--1520--237--20--239

Aircraft in Transit.

(1) Surface/Air Shipment -Prior to first flight.

(2) Ferry Status - Same as paragraph 1.a..

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

e. Component/Parts in Stock at All Levels (Depot Level and Others), including War Reserves.

Upon receipt of this TB, 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: "UH-60-02-ASAM-01 (TB

1-1520-237-20-239), Inspection of Fairing Assembly Not Complied With."

(1) Wholesale Stock - Upon receipt of this TB, Depot and Materiel Activity Commanders will

ensure all items in condition codes // A //, // B //, // C //, // D //, and // E //, listed in paragraph 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 TB, Commanders and Facility Managers maintaining retail

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

quired IAW paragraphs 8 and 9, on suspect materiel. Dispose of discrepant materiel IAW paragraph 10.

f. Components/Parts in Work (Depot Level and Others).

Depot and other maintenance activity commanders will ensure items listed in paragraphs 6 and 7, are not

issued until they are in compliance with this TB.

2. Task/Inspection Suspense Date. Complete the inspection IAW paragraphs 8 within the next 10 flight

hours but NLT 29 November 2001and report IAW para 14.a.(2) NLT 3 December 2001.

Reporting Compliance Suspense Date.

N/A.

Summary of Problem.

a. History - Tail rotor fairings installed on recent production aircraft have cracked in service. Cracked

fairings have also been found on installed and uninstalled spares. The manufacturing process was changed

from a fiberglass lay-up to an injection molding process. Investigation revealed that due to the change in the

manufacturing process, the stresses introduced during installation of the nut plates may be causing the crack-

ing.

b. Manpower/downtime and funding impacts - See paragraph 12.

The purpose of this TB is to:

(1) Conduct an initial inspection to identify and replace suspect parts.

(2) Implement a recurring inspection of suspect parts.

End Items to be inspected. All H-60 series aircraft.

Assembly Components to be Inspected. -

NOMENCLATURE

PART NUMBER

NSN

Blade, Rotary Wing

70104-31000-043

1615-01-113-8188

70104-31000-044

1615-01-088-3230

70101-11200-043

1615-01-430-2782

Parts to be Inspected. -

PART NUMBER

NSN

NOMENCLATURE

Fairing Assembly

70104-11104-044

1615-01-114-6181

Fairing

70104-11104-103

1560-01-298-6251