Commonwealth legislation

AD/B747/27 - Escape Slide Flapper Valve - Modification

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

Requires a hardware modification to the escape‑slide flapper valve on Boeing 747s fitted with B.F. Goodrich slides/turbo fans, to be carried out using one of three referenced service documents and completed before 1 January 1981. It affects aircraft owners/operators, who must schedule and pay for the work; the change is mandated to address reported slide inflation failures and improve emergency-evacuation reliability.

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AD/B747/27 - Escape Slide Flapper Valve - Modification

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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/B747/27 Escape Slide Flapper Valve - Modification 2/81

Applicability: All models 747 with B.F. Goodrich escape slides and turbo fans identified in B.F. Goodrich SB No. 25-060 dated 14 July 1980.

Documents: 1. FAA AD 80-20-02, Amendment 39-3928; or

Boeing SB 747-25-2543; OR 3. B.F. Goodrich SB 25-060.

Compliance: Before 1 January 1981.

Background: Some escape slides on overseas aeroplanes have failed to inflate correctly during emergency test inflation.

Source text

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