Commonwealth legislation

AD/BN-2/63 - Nacelle Box Structure at Bottom Fitting of MLG

RepealedCTH

This Act has been repealed and is no longer in force. It is retained for historical reference.

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

2/10 complexity

This AD mandates a one-time safety inspection of the nacelle box bottom fitting where the main landing gear attaches on Pilatus Britten‑Norman Islander models BN‑2, BN‑2A, BN‑2B and BN2T, following Pilatus Britten‑Norman Mandatory Service Bulletin BN2/SB.235.

It affects all operators of those Islander types because threadbound or loose landing‑gear bolts can cause play and cracking in the supporting structure, risking landing‑gear failure; the check was required within 50 landings after 21 May 1998.

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Current sections

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AD/BN-2/63 - Nacelle Box Structure at Bottom Fitting of MLG

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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 Pilatus Britten-Norman BN-2 Series Aeroplanes

AD/BN-2/63 Nacelle Box Structure at Bottom Fitting of MLG 6/98

Applicability: All Model BN-2, BN-2A, BN-2B, and BN2T Islanders.

Requirement: Inspect in accordance with Pilatus Britten-Norman Mandatory Service Bulletin BN2/SB.235.

Compliance: Unless already accomplished, within 50 landings after 21 May 1998.

This airworthiness directive becomes effective on 21 May 1998.

Background: Some of the attachment bolts of the main landing gear bottom fitting have been found in a threadbound condition, and AD/BN-2/61 was issued to address this problem.

Threadbound bolts can cause play at the main landing gear bottom fitting and result in cracks in the nacelle box structure.

Source text

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