Commonwealth legislation

AD/B747/189 - Body Station 2598 Bulkhead Inner Chord

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Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

This AD requires operators of specified Boeing 747s (line positions 1–1157) to carry out inspections per FAA AD 98-16-13, with Boeing Alert Service Bulletin 747-53A2423 as related material, effective 8 October 1998. It affects aircraft operators and maintenance organisations by mandating inspections to find missing fasteners and prevent fatigue cracking of the Body Station 2598 forward inner chord splice fitting—risks that could compromise horizontal stabiliser load capacity. Operators fund and schedule the work.

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Current sections

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AD/B747/189 - Body Station 2598 Bulkhead Inner Chord

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Boeing 747 Series Aeroplanes

AD/B747/189 Body Station 2598 Bulkhead Inner Chord 11/98

Applicability: Model 747 series aircraft having line positions 1 through 1157.

Requirement: Inspect in accordance with the technical requirements of FAA AD 98-16-13 Amdt 39- 10689.

Note: Boeing Alert Service Bulletin 747-53A2423 refers.

Compliance: As specified in the Requirement document with a revised effective date of 8 October 1998.

This airworthiness directive becomes effective on 8 October 1998.

Background: The FAA received a report that fasteners were missing from the splice fitting of the forward inner chord of the Body Station 2598 bulkhead. The actions specified in this Directive are intended to prevent accelerated fatigue cracking of the inner chords, which could result in inability of the structure to carry horizontal stabiliser flight loads.

Source text

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

1 AD/B747/189 - Body Station 2598 Bulkhead Inner Chord