Commonwealth legislation

AD/EC 135/1 Amdt 1 - Main Rotor Hub-Shaft

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

2/10 complexity

This AD requires operators of Eurocopter EC135 helicopters fitted with the listed main rotor hub‑shaft assemblies to carry out initial and repeat inspections following Eurocopter Deutschland Alert Service Bulletin EC 135‑62A‑004 Revision 3. The CASA delegate revoked the earlier AD and reissued the requirement; the initial visual inspection was required before further flight after 24 December 1999 and repeat inspections follow the service bulletin. Operators fund and perform the inspections and may have to ground helicopters until inspections are completed; CASA enforces compliance.

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Current sections

Direct links to the current provisions in AD/EC 135/1 Amdt 1 - Main Rotor Hub-Shaft.

AD/EC 135/1 Amdt 1 - Main Rotor Hub-Shaft

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

View image in the official source
View image in the official source
Eurocopter EC 135 Series Helicopters

AIRWORTHINESS DIRECTIVE

View image in the official source

For the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/EC 135/1 and issues the following AD under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

View image in the official sourceAD/EC 135/1

Amdt 1

Main Rotor Hub-Shaft 13/2001

Applicability: All Model EC 135 helicopters equipped with main rotor hub-shaft assembly listed in the Requirement document.

Requirement: Inspect in accordance with Eurocopter Deutschland Alert Service Bulletin EC 135- 62A-004 Revision 3.

Note: LBA AD 1999-185/4 refers.

Compliance: Before further flight after 24 December 1999 for the initial visual inspection, unless already accomplished. Thereafter as specified in the Requirement document.

The compliance times remain unchanged for this issue. This amendment becomes effective on 27 December 2001.

Background: Following a recent test run, cracks were detected in the main rotor hub-shaft of an affected helicopter. Initial and repeat inspections are introduced that are intended to prevent fracture of the main rotor hub-shaft, which could result in loss of control of the helicopter.

Amendment 1 is issued in response to a revision of the related LBA AD which introduces the latest revision of the Requirement document. This revision corrects the dimension defining the inspection area and limits the components affected.

The original issue of this Airworthiness Directive became effective on 24 December 1999.

Signature of David Villiers, Delegate of the Civil Aviation Safety Authority.

David Alan Villiers

Delegate of the Civil Aviation Safety Authority 8 November 2001