Commonwealth legislation

AD/B747/56 - Fuselage - Tail Section Structure

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

This AD applies to Boeing 747s (line numbers 001–554) and makes compliance with Boeing Service Bulletin 747-53-2220 Revision 2 mandatory. It responds to manufacturer reports of in‑flight cabin pressure loss linked to aft pressure bulkhead corrosion or deterioration of the composite APU duct pressure pan. Operators must carry out inspections/repairs per the service bulletin, bearing the costs and scheduling within regulatory oversight. The directive also cross‑references FAA AD 86‑16‑05.

JSON API

Deep dive

Want the full deep dive?

Zoe can write the in-depth analysis on top of the summary above: how it works, who it affects and what each part actually does.

Current sections

Direct links to the current provisions in AD/B747/56 - Fuselage - Tail Section Structure.

AD/B747/56 - Fuselage - Tail Section Structure

meta-content-style-type: text/css meta-content-type: application/xhtml+xml; charset=utf-8 meta-generator: Aspose.Words for .NET 22.10.0

?xml version="1.0" encoding="utf-8" standalone="no"?>

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/B747/56 Fuselage - Tail Section Structure 2/87

Applicability: All models with line numbers 001 to 554. Requirement: Action in accordance with Boeing SB 747-53-2220 R2.

Note: FAA AD 86-16-05 refers.

Compliance: As per Requirement Document.

Background: The manufacturer reports instances of in-flight cabin pressure loss due to aft pressure bulkhead corrosion or deterioration of the composite Auxiliary Power Unit (APU) duct pressure pan.

Source text

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