ASB UH-1H-12-08 Page 1 of 6 USML VIII(i) ALERT SERVICE BULLETIN UH-1H-12-08 28 August 2012

MODEL AFFECTED: UH-1H

SUBJECT: P/N 205-001-720-00 1 CABLE ASSEMBLY, ONE TIME INSPECTION FOR DEFECTIVE BODY, P/N

205-001-742-001

HELICOPTERS AFFECTED: ALL UH-1H HELICOPTERS

COMPLIANCE: PART I (Inspection): At the next Daily Inspection

Part II (Replacement) At the next Phase Inspection or 50 flight hours after receipt of this ASB, whichever occurs first, but no later than 31 December 2012

DESCRIPTION:

A number of P/N 205 -001-720-001 Cable Assemblies have been manufactured with

defective P/N 205-001-742-001 Bodies. The bodi es are mismachined such that the P/N 0301245 Barrel Assembly will not fully engage in the body cavity. This ASB is a one-time inspection of all P/N 205-001-720-001 Cable Asse mblies for the defective condition. Defective cable assemblies must be replaced as noted in the compliance section of this ASB. Applic ability of this bulletin to any spare part shall be determined prior to its installation on an affected aircraft.

APPROVAL:

The engineering design aspects of this bul letin are Bell Helicopter Engineering approved.

CONTACT INFO:

For any questions regarding this bulletin, please contact:

Bell Helicopter Product Support Engineer ing - Medium Military Helicopters
Tel: 817-280-3548 / mts-medium@bh.com Distribution A: Approved for Pub lic Release IAW DOD Memo 12-S-2966ASB UH-1H-12-08 Page 2 of 6 USML VIII(i) MANPOWER:

Approximately 1.0 man-hours ar e required to complete Part I of this bulletin. Approximately 8.0 man-hours are required to complete Part II of this bulletin. The estimates are based on hands-on time, and may vary with personnel and facilities

available.

WARRANTY:

There is no warranty credit applicable for parts or labor associated with this bulletin.

MATERIAL:

Required Material: The following material may be required for the accomplishment of this bulletin and may be obtained through your Bell Helic opter Textron S upply Center.

Part Number Nomenclature Qty

205-001-720-001 Cabl e Assembly 2

Consumable Material: The following material may be required to accomplish this bulletin, but may not require ordering, depending on the operator’s consumable material stock levels. This material may be obtained through your Bell He licopter Textron Supply Center.

Part Number Nomenclature Qty Reference *

AN23-11 Bolt 2

AS100028 Lockwire AR C-405

MS14145-3 Nut 2

MS24665-151 Pin, Split 2

NAS1149F0363P Washer 2

* C-XXX numbers refer to the co nsumables list in BHT-ALL-SPM Standard Practices Manual

SPECIAL TOOLS:

None required.

WEIGHT AND BALANCE:

Not affected.

ELECTRICAL LOAD DATA:ASB UH-1H-12-08 Page 3 of 6 USML VIII(i) Not affected.

REFERENCES:

TM 55-1520-210-23-2 AVUM & AVIM Maintenance Instructions TM 55-1520-210-23P-2 AVUM & AVIM Repair Parts and Special Tools List

PUBLICATIONS AFFECTED:

None affected.

ACCOMPLISHMENT INSTRUCTIONS:

PART I - Inspection

1. Prepare helicopter for maintenance.

2. Open the vertical fin tail rotor driveshaft cover.

3. Gain access to the lower ends of t he P/N 205-001-720-001 Ca ble Assemblies at

the connection to the P/N 0301245 Barrel A ssembly. See Figure 1, sheet 1.

4. Refer to Figure 1, sheet 2. Inspect for the condition shown in View B that prevents complete seating of the P/N 0301245 Barre l Assembly in the bottom of the P/N 205-001-742-001 Body. As necessary, re move lockwire for a clear view.

5. The condition shown in Figure 1, sheet 2, View B, is not acceptable and is cause to replace the affected P/N 205-001-720-001 Cable Assembly.

6. For cable assemblies that fully engage the P/N 0301245 Barrel Assembly and do not exhibit the condition of View B, no further action is requi red. If lockwire was removed to facilitate inspection, secure barrel assembly and cable connection with new lockwire and make an entry in t he helicopter records showing compliance

with this ASB.

7. For defective cable assemblies, go to Part II.

PART II – Replacement of De fective Cable Assemblies

1. Replace defective cable assemblies at t he next Phase Inspection or 50 flight hours after receipt of this ASB, whichever occu rs first, but no later than 31 December

2012 .

2. For defective cable assemblies that are not to be repl aced immediately:ASB UH-1H-12-08 Page 4 of 6 USML VIII(i) a. If lockwire was removed to facilitate inspection, secure barrel assembly and cable connection with new lockwire and inspect daily for security and condition until cable assembly is replaced.

b. Make an entry in the helicopter record s noting that replacement of defective cable assemblies is required at the nex t Phase Inspection or 50 flight hours after receipt of this ASB, whichever occu rs first, but no later than 31 December

2012 .

3. Refer to TM 55-1520-210-23-2 for cable replacement procedures.

4. Once cable assemblies have been replaced, make an entry in the helicopter records showing compliance with this ASB.ASB UH-1H-12-08 Page 5 of 6 USML VIII(i)ASB UH-1H-12-08 Page 6 of 6 USML VIII(i)