Commonwealth legislation

AD/BN-2/25 Amdt 3 - Wing Mounted Engine Upper Mounting Brackets

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

4/10 complexity

This Airworthiness Directive requires operators of Pilatus Britten‑Norman BN‑2 and BN‑2T Islanders to carry out the inspections and corrective work set out in Pilatus Britten‑Norman Service Bulletin BN‑2/SB.61 issue 5 for the wing‑mounted engine upper mounting brackets. It responds to reported cracking, wear, lug distortion and possible faulty doubler plate assembly and makes compliance mandatory while clarifying the directive’s wording to remove ambiguity.

JSON API

Deep dive

Want the full deep dive?

Zoe can write the in-depth analysis on top of the summary above: how it works, who it affects and what each part actually does.

Current sections

Direct links to the current provisions in AD/BN-2/25 Amdt 3 - Wing Mounted Engine Upper Mounting Brackets.

AD/BN-2/25 Amdt 3 - Wing Mounted Engine Upper Mounting Brackets

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-2/25

Amdt 3

Wing Mounted Engine Upper Mounting Brackets

8/85 DM

Applicability: All Model BN-2 and BN-2T Islander Series.

Requirement: Action in accordance with Pilatus Britten-Norman S.B. BN-2/SB.61 issue 5. Compliance: Unless already accomplished, as detailed in the Requirement Document.

Background: 1. Cracks may develop across the mounting bracket lugs, the main bolt holes and the reinforcing doubler securing rivet locations.

2. Elongation and wear can occur at the main bolt holes, together with possible lug assembly distortion and fretting between the main bolt hole lug and bush where fitted.

3. Unacceptable lug edge distances may have resulted from faulty lug doubler plate sub-assembly at manufacture. This Directive is amended to delete all reference to requirements from the title and eliminate any ambiguity relating to requirement actions regarding the intent of this document.

Source text

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

1 AD/BN-2/25 Amdt 3 - Wing Mounted Engine Upper Mounting Brackets