Commonwealth legislation

AD/B747/88 - CWT Secondary Fuel Barrier

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

Mandates operators of specified Boeing 747 models to perform the maintenance and corrective actions set out in FAA AD 91-03-13 and Boeing Service Bulletin 747-57-2253 Rev. 1, with a revised Australian effectivity date of 18 April 1991.

It is intended to ensure the centre wing tank (CWT) secondary fuel barrier is correctly applied so fuel or fuel vapour cannot enter cargo or passenger compartments if a primary seal fails or the centre wing box cracks.

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AD/B747/88 - CWT Secondary Fuel Barrier

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

View image in the official source Boeing 747 Series Aeroplanes

AD/B747/88 CWT Secondary Fuel Barrier 4/91

Applicability: Model 747 series aircraft as listed in Boeing SB 747-57-2253, Revision 1. Requirement: Action in accordance with the technical requirements of FA AD 91-03-13 Amdt 39-

Note: Boeing SB 747-57-2253 Rev. 1 refers.

Compliance: As specified in the Requirement Document but with a revised effectivity date of 18 April 1991 for Australian registered aircraft.

Background: The FAA has received reports of the secondary fuel barrier not being applied correctly. This condition, if not corrected, could result in fuel or fuel vapours entering the cargo and passenger compartments in the event of failure of a primary seal or crack in the centre wing box structure.

Source text

Sourced from the Federal Register of Legislation (legislation.gov.au), CC BY 4.0.