1AD/B737/47 - Left Engine Fuel Feed Tube

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Boeing 737 Series Aeroplanes

AD/B737/47 Left Engine Fuel Feed Tube 11/90

Applicability: Model 737-300 and 737-400 series, listed in Boeing Service Bulletin 737-28-1084. Requirement: Unless already accomplished, action one of the following:

Inspect the left engine fuel feed tube assembly for proper clearance and chafing in accordance with Boeing Service Bulletin 737-28-1055 Revision 1.

2. Replace the left engine fuel feed tube assembly in accordance with Boeing Service Bulletin 737-28-1084, and verify minimum clearance between support structure and fuel tube in accordance with Boeing Service Bulletin 737-28-1055 Revision 1.

3. Replace the left engine fuel feed tube assembly in accordance with Boeing Service Bulletin 737-28-1084, and verify minimum clearance in accordance with Boeing Service Bulletin 737-28-1084 Revision 1.

Note: FAA AD 90-15-03 Amdt 39-6650 refers.

Compliance: 1. Prior to 31 January 1991.

2. Prior to 30 April 1991.

3. Prior to 30 April 1991.

Background: Reports of chafing of the left engine fuel feed tube in the wing/strut area have been received by the FAA. This condition could result in fuel leakage causing a potential engine strut fire hazard.