Summary of Problem. - TB-1-1520-237-20-2410002

TB 1--1520--237--20--241

Aircraft in Transit.

(1) Surface/Air Shipment -- Prior to first flight after arrival at destination.

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

d. Maintenance Trainers (Category A and B). Comply NLT 13 December 2001.

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-60-02-03 (TB

1-1520-237-20-241), Inspection of Flight Control System, Pitch Trim Assembly, Not Complied With."

(1) Wholesale Stock -- Report receipt of this message IAW paragraph 14.b.(1) NLT 13 Decem-

ber 2001. 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 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 origi-

nal condition tags. Report compliance with this message IAW paragraph 14.b.(2) NLT 17 December 2001.

(2) Retail Stock -- Report receipt of this message IAW paragraph 14C(1) NLT 13 December

2001. Upon receipt of this message, Commanders and Facility managers maintaining retail stock at installa-

tion level and below shall contact the supported aviation unit to perform the procedures required IAW para-

graphs 8 and 9 on suspect material. Dispose of discrepant materiel IAW paragraph 10. Report compliance

with this message IAW paragraph 14.c.(2) NLT 17 December 2001.

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

TB.

2. Task/Inspection Suspense Date. Complete the inspection IAW paragraphs 8 before the next flight but

NLT 13 December 2001 and report IAW para 14.a.(2) NLT 17 December 2001.

3. TAMMS Reporting Compliance Suspense Date.

Report compliance IAW paragraph 14.a.(1) NLT

13 December 2001

Summary of Problem.

a. History -- An H-60 Pitch Trim Boost Servo has been found on a production aircraft with a protruding

actuator rod clevis pin. The pin had not been swaged as required allowing the pin to partially back out of the

connection. Loss of this pin would result in complete loss of aircraft control.

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

c. The purpose of this TB is to perform a one time visual inspection to locate amd remove from service

Pitch Trim Assemblies with incorrectly installed actuator assembly rod clevis pin and washer.

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

Assembly Components to be Inspected.

NOMENCLATURE

PART NUMBER

NSN

Trim Assembly, Pitch

70410-02760-046

1680-01-101-4097

Actuator, Trim Tab

70410-02760-047

1680-01-137-3533

Cylinder, Assembly

70410-02561-105

1650-01-106-1957

Cylinder, Assembly

70410-02561-112

1650-01-375-3160

Parts to be Inspected. -

PART NUMBER

NSN

NOMENCLATURE

Cylinder, Assembly

A10807-2

1650-01-098-4352

Cylinder, Assembly

A10807-3

1550-01-375-3161