Commonwealth legislation

AD/B747/135 - Potable Water Tank Pressure Relief Valve

In ForceCTH

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Commonwealth

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legislative instrument

Plain English Summary

3/10 complexity

CASA mandates that operators of Boeing 747s line numbers 1–1013 carry out the work in Boeing Alert Service Bulletin 747-38A2105 to address reported potable water tank ruptures, with compliance required by 1 August 1995. Operators must obtain the Service Bulletin, schedule and pay for the inspections/modifications, accepting associated downtime and costs to eliminate the identified safety risk.

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AD/B747/135 - Potable Water Tank Pressure Relief Valve

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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/B747/135 Potable Water Tank Pressure Relief Valve 2/95

Applicability: All Boeing 747 aircraft, line number 1 to 1013 inclusive.

Requirement: Action in accordance with Boeing Alert Service Bulletin 747-38A2105. Compliance: Unless previously carried out by 1 August 1995.

Background: Boeing has advised that rupture of several potable water tanks have occurred. In one incident the upper polar cap from the main body of the potable water tank separated and smashed through the cabin floor at seat row 21 striking the main deck ceiling panel and PSU area.

Source text

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