Commonwealth legislation

AD/B747/96 - Drain Mast Assemblies

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

2/10 complexity

This airworthiness directive requires operators of Boeing 747 aeroplanes listed in Boeing Alert Service Bulletin 747‑38A2077 (30 Aug 1990) to carry out the technical measures set out in FAA AD 91‑09‑11 to address drain‑mast heater/fire risks. Compliance is mandatory within 12 months from 11 July 1991.

It affects aircraft owners and maintenance organisations, who must perform inspections/repairs and bear the compliance costs. The directive relies on FAA and Boeing service documents for technical detail and aims to prevent fuselage structural damage and possible uncontrolled fire.

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/B747/96 - Drain Mast Assemblies.

AD/B747/96 - Drain Mast Assemblies

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/B747/96 Drain Mast Assemblies 7/91

Applicability: Boeing 747 series aeroplanes as listed in Boeing Alert Service Bulletin 747-38A2077, dated 30 August 1990.

Requirement: Action in accordance with the Technical Requirements of FAA AD 91-09-11.

Note: FAA AD 91-09-11 refers to Boeing Alert Service Bulletin 747-38A2077, dated 30 August 1990.

Compliance: Required within 12 months from 11 July 1991.

Background: FAA AD action prompted by two reports of fire which may have been caused by the contact of foreign material with drain mast heater elements. This condition, if not corrected, could result in structural damage to the fuselage skin, frame, and stringers, and possible uncontrolled fire.

Source text

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