ASB 204B-12-68 

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ECCN EAR99 

 ALERT SERVICE BULLETIN 204B-12-68 

10 October 2012 

MODEL AFFECTED: 204B 

SUBJECT: P/N 205-001-720-001 CABLE ASSEMBLY, ONE 

TIME INSPECTION FOR DEFECTIVE BODY, P/N 

205-001-742-001 

HELICOPTERS AFFECTED: ALL 204B HELICOPTERS 

 

COMPLIANCE: PART I (Inspection): Within the next 25 flight hours 

 PART II (Replacement): Within the next 100 flight 

hours after receipt of this ASB, but no later than 

 31 January 2013 

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 bodies 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 assemblies for the defective 

condition. Defective cable assemblies must be replaced as noted in the Compliance 

Section of this ASB. Applicability of this bulletin to any spare part shall be determined 

prior to its installation on an affected helicopter. 

APPROVAL: 

The engineering design aspects of this bulletin are FAA/ODA approved. 

CONTACT INFO: 

For any questions regarding this bulletin, please contact: 

Bell Helicopter Product Support Engineering - Medium Military Helicopters 

Tel: 817-280-3548 / mts-medium@bh.com 
ASB 204B-12-68 

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ECCN EAR99 

MANPOWER: 

Approximately 1 man-hour is required to complete PART I of this bulletin. 

Approximately 8 man-hours are required to complete PART II of this bulletin. These 

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 Helicopter Textron Supply Center. 

Part Number Nomenclature Qty 

 

205-001-720-001 Cable 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 Helicopter Textron Supply Center.

Part Number Nomenclature Qty Reference * 

 

AN23-11 Bolt 2 

AS100028 Lockwire AR C-405 

MS14145L3 Nut 2 

MS24665-151 Pin, Split 2 

NAS1149F0363P Washer 2 

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

SPECIAL TOOLS: 

None required. 

WEIGHT AND BALANCE: 

Not affected. 
ASB 204B-12-68 

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ECCN EAR99 

ELECTRICAL LOAD DATA: 

Not affected. 

REFERENCES: 

BHT-204B-M&O Maintenance and Overhaul Manual 

BHT-204B-IPB Illustrated Parts Breakdown 

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 the P/N 205-001-720-001 cable assemblies at the 

connection to the P/N 0301245 barrel assembly. See Figure 1. 

4. Refer to Figure 1. Inspect for the condition shown in View B that prevents complete 

seating of the P/N 0301245 barrel assembly in the bottom of the P/N 205-001-742-

001 body. If necessary, remove lockwire for a clear view. 

5. The condition shown in Figure 1, 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 required. If lockwire was 

removed to facilitate inspection, secure barrel assembly and cable connection with 

new lockwire and make an entry in helicopter historical service records showing 

compliance with this ASB. 

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

 
ASB 204B-12-68 

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ECCN EAR99 

PART II – Replacement of Defective Cable Assemblies 

1. Replace defective cable assemblies within the next 100 flight hours after receipt of 

this ASB, whichever occurs first, but no later than 31 December 2012 . 

2. For defective cable assemblies that are not to be replaced immediately: 

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 helicopter historical services records noting that replacement 

of defective cable assemblies is required at the next scheduled inspection or 50 

flight hours after receipt of this ASB, whichever occurs first, but no later than 31 

December 2012 . 

3. Refer to BHT-204B-M&O for cable replacement procedures. 

4. Once cable assemblies have been replaced, make an entry in helicopter historical 

service records indicating compliance with this Alert Service Bulletin. 
ASB 204B-12-68 

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ECCN EAR99 
ASB 204B-12-68 

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ECCN EAR99