Commonwealth legislation

AD/B747/104 - Door 3 Evacuation System

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Commonwealth

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legislative instrument

Plain English Summary

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This directive requires operators of Boeing 747s fitted with BF Goodrich single‑piece Door 3 ramp/slides (P/Ns 7A1418‑1 to ‑16) to modify regulator assembly 4A3474‑1 to 4A3474‑2 or 4A3474‑3 and re‑identify the ramp/slide per the BF Goodrich Service Bulletin. It responds to reports of delayed regulator function that could prevent use of Door 3 in an evacuation. Operators must complete the work and record compliance by 6 March 1993 (Applicability; Requirement; Compliance; Background).

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AD/B747/104 - Door 3 Evacuation System

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Boeing 747 Series Aeroplanes

AD/B747/104 Door 3 Evacuation System 3/92

Applicability: Model 747 series; equipped with BF Goodrich single-piece ramp/slide, part numbers 7A1418-1 through -16 inclusive, for Door 3 evacuation system.

Requirement: Modify the regulator assembly, P/N 4A3474-1 (a sub-assembly of reservoir assembly P/N 4A3416-1), to the P/N 4A3474-2 or 4A3474-3 configuration, by installing improved internal components in accordance with paragraph 2 (Accomplishment Instructions) of BF Goodrich Service Bulletin No 4A3416-25-233, dated

14 December 1990; or Revision 1, dated 1 October 1991.

Re-identify the Door 3 ramp/slide in accordance with paragraph 3.B (Identification) of BF Goodrich Service Bulletin No 4A3416-25-233, dated 14 December 1990; or Revision 1, dated 1 October 1991.

Note: FAA AD 91-25-02 Amdt 39-8103 refers.

Compliance: Prior to 6 March 1993.

Background: Reports have been received of delayed regulator function during ramp/slide deployment. This condition, if not corrected, could result in loss of use of the Door 3 evacuation system by passengers and crew during an emergency evacuation. The compliance time required by the FAA is extended by two months.

Source text

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

1 AD/B747/104 - Door 3 Evacuation System