Commonwealth legislation

AD/B747/55 - Nacelle Strut Attachment Fitting Bolts

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Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

4/10 complexity

This AD requires operators of Boeing 747s (line numbers 1–644) to carry out the inspections and corrective actions specified in FAA AD 86‑23‑01—prompted by reports of fractured H‑11 bolts at nacelle strut fittings—and references Boeing SB 747‑57A2235 for technical guidance.

Compliance has been mandatory since 31 January 1987; aircraft owners/operators must schedule, fund and complete inspections, repairs and any associated downtime.

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AD/B747/55 - Nacelle Strut Attachment Fitting Bolts

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

View image in the official source Boeing 747 Series Aeroplanes

AD/B747/55 Nacelle Strut Attachment Fitting Bolts 1/87

Applicability: All models with line numbers 1 to 644.

Requirement: Action in accordance with Para’s A,B,C,D,E & F of FAA AD 86-23-01.

Note: Boeing SB 747-57A2235 refers.

Compliance: As per Requirement Document from 31 January 1987.

Background: The manufacturer reports of fractured H-11 bolts which secure the nacelle strut attachment fittings. One instance reported was of both bolts fractured at one fitting.

Source text

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