Commonwealth legislation

AD/ECUREUIL/61 Amdt 1 - TR Head Pitch Change Plate Bearing Spacer

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

5/10 complexity

This Airworthiness Directive requires operators of Eurocopter AS350 (Ecureuil) variants without Mod 076550 to identify and then daily monitor the alignment of the tail-rotor pitch-change plate spacer, and to embody Mod 076550 where instructed. It affects owners, pilots and maintenance organisations who must perform inspections, keep a maintenance-certification entry (pilots may perform the daily check) and carry the directive aboard to prevent spacer rotation that can wear or cut the rotating plate and lead to loss of tail-rotor pitch control.

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/ECUREUIL/61 Amdt 1 - TR Head Pitch Change Plate Bearing Spacer.

AD/ECUREUIL/61 Amdt 1 - TR Head Pitch Change Plate Bearing Spacer

View image in the official source

View image in the official source
AIRWORTHINESS DIRECTIVE

For the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/ECUREUIL/61 and issues the following 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/61

Amdt 1

TR Head Pitch Change Plate Bearing Spacer

13/2004

Applicability: AS 350 helicopters, versions B, B1, B2, B3, BA, BB and D, fitted with the tail rotor pitch change rotating plates, all part numbers, on which Eurocopter modification (Mod) 07 6554 has not been embodied.

This Airworthiness Directive (AD) does not apply to post-mod 076550 pitch change plate assembly part number 350A33-2030-00.

Requirement: 1. Identify position of the spacer and the tail rotor pitch change rotating plate as per provisions of paragraph 2.B.1 of Eurocopter AS350 Alert Service Bulletin (ASB)

05.00.33 R1 dated 15 March 2004 or later revision approved by DGAC / EASA.

a. Monitor position of the spacer and the tail rotor pitch change rotating plate for alignment as per provisions of paragraph 2.B.2 of ASB 05.00.33 R1.

The inspection detailed in requirement 2 may be performed by the pilot-in- command, in which case, a certification is to be made by entering AD/ECUREUILl/61 Amdt 1 against the daily inspection certification on the maintenance release. A copy of this directive and of the requirement document must be carried in the helicopter.

b. If the paint index marks are aligned, embody Mod 076550 as per the provisions of paragraph 2.B.3 of ASB 05.00.33 R1 or later revision approved by DGAC / EASA.
1. c. If the paint index marks are mis-aligned, embody Mod 076550 as per the provisions of paragraph 2.B.4 of ASB 05.00.33 R1 or later revision approved by DGAC / EASA.

Note 1: DGAC Airworthiness Directive F-2000-222-079R1 as approved by EASA reference number 2004-9369 dated 7 September 2004 refers.

Compliance: 1. Unless previously accomplished, at the latest within 10 flying hours after the effective date of this AD.

2.a. Daily, after the last flight of the day.

2.b. Not later than the next “T” basic inspection.

Eurocopter AS 350 (Ecureuil) Series Helicopters

AD/ECUREUIL/61 Amdt 1 (continued)

2.c. With-in 25 flying hours from detection of the misalignment.

Note 2: Compliance to the original version of AD/ECUREUILl/61 is an acceptable alternate to this amendment and no further action is required.

This Amendment becomes effective on 23 December 2004.

Background: This amendment of the Airworthiness Directive reflects changes in the document referred to, in the original issue of the AD, namely revision 1 of Eurocopter AS 350 ASB 05.00.33 and revision 1 of DGAC AD F-2000-222-079. The changes are in the effectivity list and there is no difference in the technical contents.

There have been reports of rotation of the bearing spacers in AS350 tail rotor. Such rotation indicates that the inner bearing race may be rotating on its shaft. Rotation may cause excessive wear and cut the rotating plate, which will cause deterioration and loss of pitch control of the tail rotor.

The original issue of the directive addressed unsafe condition caused by the loss of pitch control of the tail rotor.

The original issue of this Airworthiness Directive became effective on 14 June 2000.

Signature of James Coyne, Delegate of the Civil Aviation Safety Authority.

James Coyne

Delegate of the Civil Aviation Safety Authority 8 November 2004

View image in the official source

The above AD is notified in the Commonwealth of Australia Gazette on 1 December 2004.

Source text

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

1 AD/ECUREUIL/61 Amdt 1 - TR Head Pitch Change Plate Bearing Spacer

AIRWORTHINESS DIRECTIVE

Eurocopter AS 350 (Ecureuil) Series Helicopters

AD/ECUREUIL/61

Amdt 1

TR Head Pitch Change Plate Bearing Spacer

13/2004

This Airworthiness Directive (AD) does not apply to post-mod 076550 pitch change plate assembly part number 350A33-2030-00.

Requirement: 1. Identify position of the spacer and the tail rotor pitch change rotating plate as per provisions of paragraph 2.B.1 of Eurocopter AS350 Alert Service Bulletin (ASB)

05.00.33 R1 dated 15 March 2004 or later revision approved by DGAC / EASA.

a. Monitor position of the spacer and the tail rotor pitch change rotating plate for alignment as per provisions of paragraph 2.B.2 of ASB 05.00.33 R1.

b. If the paint index marks are aligned, embody Mod 076550 as per the provisions of paragraph 2.B.3 of ASB 05.00.33 R1 or later revision approved by DGAC / EASA.
1. c. If the paint index marks are mis-aligned, embody Mod 076550 as per the provisions of paragraph 2.B.4 of ASB 05.00.33 R1 or later revision approved by DGAC / EASA.

Note 1: DGAC Airworthiness Directive F-2000-222-079R1 as approved by EASA reference number 2004-9369 dated 7 September 2004 refers.