Commonwealth legislation

AD/B747/209 - Nacelle Strut Fuse Pins

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Plain English Summary

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This Airworthiness Directive requires operators of specified Boeing 747‑200/‑300 (with GE CF6‑80C2 engines) and 747‑400 aeroplanes to carry out the inspections and corrective actions set out in FAA AD 99‑10‑10, as referenced in Boeing Service Bulletin 747‑54‑2155 Revision 2, excluding aircraft already modified under FAA AD 95‑13‑05 or 95‑13‑06 (Applicability; Requirement; Compliance). It responds to reports of cracked or corroded nacelle strut fuse pins that could allow strut‑to‑wing attachment failure (Background).

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AD/B747/209 - Nacelle Strut Fuse Pins

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/B747/209 Nacelle Strut Fuse Pins 8/99

Applicability: Model 747-200, and -300 series aircraft equipped with General Electric Model CF6- 80C2 series engines, and Model 747-400 series aircraft; as listed in Boeing Service Bulletin 747-54-2155 Revision 2; except those aircraft on which modification of the strut/wing structure have been accomplished in accordance with either FAA AD 95- 13-05 or AD 95-13-06.

Requirement: Action in accordance with the technical requirements of FAA AD 99-10-10 Amdt 39- 11163.

Compliance: As specified in the Requirement Document with a revised effective date of 12 August 1999.

This Airworthiness Directive becomes effective on 12 August 1999.

Background: The FAA received reports of cracked fuse pins in the upper link, midspar fittings, and diagonal brace of the nacelle strut due to fatigue and corrosion. Cracks or corrosion of the fuse pins could result in failure of the fuse pin and strut-to-wing attachment.

Source text

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

1 AD/B747/209 - Nacelle Strut Fuse Pins