Commonwealth legislation

AD/ECUREUIL/93 - Collective Lever Lock

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

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What it does: Requires operators of Eurocopter AS350 variants B/BA/BB/B1/B2/B3/D fitted with specific collective lever locks (P/Ns 350A77.1309.xx and 350A27.3155.20) to measure dimension “C” on the collective lock and, depending on the measurement, leave, turn, or replace the lock. Compliance is required within 50 flight hours of 5 November 2003.

Who pays/decides: CASA (via its delegate) mandates the inspection; operators bear inspection and repair costs. The AD follows an incident where an unlocked collective caused an overturn.

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Current sections

Direct links to the current provisions in AD/ECUREUIL/93 - Collective Lever Lock.

AIRWORTHINESS DIRECTIVE

View image in the official source

For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CASR 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 source

Eurocopter AS 350 (Ecureuil) Series Helicopters

AD/ECUREUIL/93 Collective Lever Lock 13/

AD/ECUREUIL/93 Collective Lever Lock 13/2003

Applicability: Model AS 350 helicopter versions B, BA, BB, B1, B2, B3, and D; fitted with the pilot collective lever locking system: Locks part number 350A77.1309.xx and 350A27.3155.20.

Requirement: Check for wear on the collective lever lock by measuring dimension “C” on the collective lever, in accordance with paragraph 2.B.2 of Eurocopter AS 350 Alert Service Bulletin No. 67.00.27.

If dimension “C” is:

\- Greater than 0.7mm; no further action is required.

\- Between 0.7mm and 0.5mm; replace or turn the lock in accordance with paragraph 2.B.3 of the Requirement document, within 100 flight hours after measurement.

\- Less than 0.5mm; before further flight, replace or turn the lock in accordance with 2.B.3 of the Requirement document.

Note: DGAC AD 2003-406(A) refers.

Compliance: Within 50 flight hours after 5 November 2003.

This Airworthiness Directive becomes effective on 5 November 2003.

Background: The DGAC requires certain actions in response to an incident where the collective lever unlocked, which resulted in unintentional takeoff and overturn. Investigation revealed excessive wear on the collective lever lock.

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

David Villiers

View image in the official sourceDelegate of the Civil Aviation Safety Authority 31 October 2003

Source text

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

AIRWORTHINESS DIRECTIVE AIRWORTHINESS DIRECTIVE