Summary of Problem - TB-1-1520-237-20-2520002

TB 1-1520-237-20-252

c. Aircraft in Transit.

(1) Surface/Air Shipment - Within 10 hours/14 days of arrival.

(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 material activity commanders will ensure the material condition tags of all items

in all condition codes listed in paragraph 6 are annotated to read: " UH-60-02-ASAM-06 (TB

1-1520-237-20-252), Swage Pin Collar, not complied with."

(1) Wholesale Stock - Report receipt of this TB IAW paragraph 14.b.(1) NLT 2 May 2002.

Upon receipt of this message, depot and material activity commanders will ensure all items in condition codes

//A//, //B//, //C//, //D//, and //E//, listed in paragraph 6 are placed in condition code //J// and tagged with a sus-

pended Tag/Label - Material, DD Form 1575/DD Form 1575-1. Do not remove original condition tags. Report

compliance with this message IAW paragraph 14.b.(2) NLT 2 May 2002.

(2) Retail Stock - Upon receipt of this TB, commanders and facility managers maintaining

retail stock listed in paragraph 6 at installation level and below shall contact the supported aviation unit to

perform the procedures required IAW paragraphs 8 and 9 on suspect material. Dispose of discrepant material

IAW paragraph 10. Report compliance with this TB IAW paragraph 14.c.(2) NLT 2 May 2002.

f. Components/Parts in Work (Depot Level and Others). Depot and other maintenance activity com-

manders will ensure items listed in paragraph 6 are not issued until they are in compliance with this TB.

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

hours but NLT 2 May 2002 and report IAW paragraph 14.a.(2) NLT 6 May 2002.

Reporting Compliance Suspense Date. Report compliance IAW paragraph 14.a.(1) NLT 2 May 2002.

Summary of Problem.

a. The Navy has discovered improperly installed Swage Pin Collars on H-60 Collective and Yaw Boost

Servos. CCAD also found a Yaw Boost Servo with this non-conforming installation with zero time since new.

This improper installation will cause the collars to be loose which may lead to possible loss of the Swage Pin.

This problem is identical to that addressed by TB 1-1520-237-20-205.

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

c. The purpose of this TB is to inspect all Swage Pins and Collars on Collective and Yaw Boost Servo

assemblies for proper installation.

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

Assembly Components to be Inspected.

NOMENCLATURE

PART NUMBER

NSN

SERVO ASSY, COLLECTIVE

274600-1045

1650-01-140-0967

SERVO ASSY, YAW

274600-1047

1650-01-143-1227

Parts to be Inspected. N/A.

NOMENCLATURE

PART NUMBER

NSN

COLLAR, GROOVED PIN

NAS1080C06

5320-00-551-8000

COLLAR, GROOVED PIN

NAS1080C08

5320-00-551-8001

PIN-RIVET, GROOVED

NAS1446-08

5320-00-559-2910

PIN-RIVET, GROOVED

NAS1446-28

5320-01-043-0065