Commonwealth legislation

AD/PC-12/18 - Flap Drive Shafts

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

Mandates replacement of inboard/outboard flap drive shafts with modified shafts, installation of additional gaskets on both sides of the Power Drive Unit, and modification of support brackets on all Pilatus PC‑12 and PC‑12/45 aeroplanes to stop moisture ingress that has caused corrosion of inner drive cables. Owners/operators must comply with Pilatus Service Bulletin 27‑003 (8 Mar 1999) by 12 Dec 1999, at their cost, which may require parts, labour and aircraft downtime.

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/PC-12/18 - Flap Drive Shafts.

AD/PC-12/18 - Flap Drive Shafts

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 PC-12 Series Aeroplanes

AD/PC-12/18 Flap Drive Shafts 8/99

Applicability: All Model PC-12 and PC-12/45 aircraft.

Requirement: Action in accordance with the Accomplishment Instructions of Pilatus Service Bulletin 27-003, dated March 8, 1999.

Note: Swiss FOCA AD HB 99-241 refers.

Compliance: Before 12 December 1999, unless already accomplished.

This Airworthiness Directive becomes effective on 12 August 1999.

Background: Reports were received of corroded inner drive cables of the flap flexible shafts (flap drive shafts). Investigations revealed that moisture from the pressurised cabin can enter the flap drive shafts through the unsealed areas of the flap drive shaft attachments and the shaft casings. This Directive requires replacement of the flap inboard and outboard flap drive shafts with modified shafts, the installation of additional gaskets on both sides of the Power Drive Unit, and modification of support brackets.

Source text

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

1 AD/PC-12/18 - Flap Drive Shafts