Transport Transports Canada Canada TP 7245E



# AIRWORTHINESS DIRECTIVE

The following airworthiness directive (AD) may be applicable to an aircraft whic h our records indicate is registered in your name. ADs are issued pursuant to **Canadian Aviation Regulation**  (CAR) 521 Division X . Pursuant to CAR 605.84 and the further details of CAR Standard 625, Appendix H , the continuing airworthiness of a Canadian re gistered aircraft is contingent upon compliance with all applicable ADs. Failure to comply with the requirements of an AD ma y invalidate the flight authorization of the aircraft. Alternative means of compliance shall be applied for in accordance with CAR 605.84 and the above

- referenced Standard

. This AD has been issued by the Continuing Airworthiness Division (AARDG), National Aircraft Certification Branch, Transport C anada, Ottawa, telephone 613 952

- 4357. 1 / 1 No

. CF

- 201 4

- 16 Issue Date 1 1 June 2014

Number: CF

- 201 4

- 16
ATA: 32 Type Certificate: A

- 131 Subject: Landing Gear

- Alternate Extension System (AES)

– Incorporation of New Certification Maintenance Requirement

Effective: 2 5 June 2014 Applicability: Bombardier Inc. model CL

- 600

- 2E25 aeroplane s, serial number 19002 and subsequent. Compliance: Within 30 days from the effective date of this AD, unless already accomplished. Background: During a design review, an error was identified which led to the development of a new certification maintenance requirement (CMR) task. Without an effective maintenance task to maintain the aeroplane’s inherent level of safety, there is a potential that a dormant failure of the alternate release system of the landing gear could occur. Failure of the landing gear al ternate release system could prevent the landing gear from extending in the case of a failure of the normal landing gear extension system.
This AD mandates the incorporation of a new maintenance task to ensure operation of the landing gear alternate exten sion system.

Corrective Actions: A. Amend the Transport Canada approved maintenance schedule by incorporating task number 32

- 01

- 00

- 101

– Operational Check of the MLG and NLG AES EMA and Release Mechanism (CRJ1000), as introduced by Temporary Revision (TR) AL I

- 0472 of the Maintenance Requirements Manual, CSP B

- 053, Part 2, dated 27 February 2014.
Note: MLG

– Main Landing Gear NLG

– Nose Landing Gear EMA

– Electro

- mechanical Actuator Compliance with superseding Temporary Revision (TR) or later revisions of the above

- mentioned Maintenance Requirements Manual approved by Transport Canada also meets the requirements of this AD.

B. Phase

- in for aeroplanes that have accumulated 540 hours air time or more as of the effective date of this AD: within 660 hours ai r time from the effective date of this AD, perform initial operational check 32

- 01

- 00

- 101.
Authorization: For the Minister of Transport,

ORIGINAL SIGNED BY
Derek Ferguson Chief, Continuing Airworthiness

Contact: Helen Tsai , Continuing Airworthiness, Ottawa, telephone 613

- 952

- 4357, facsimile 613

- 996

- 9178 or e

- mail AD

- CN@tc.gc.ca or any Transport Canada Centre.

Pursuant to CAR 202.51 the registered owner of a Canadian aircraft shall, within seven days, notify the Minister in writing of any change of his or her name or address. To request a change of address, contact the Civil Aviation Communications Centre (AARC) at Place de Ville, Ottawa, Ontario K1A 0N 8 , or 1

- 800

- 305

- 2059
, or www.tc.gc.ca/civilaviation/communications/centre/ address.asp

24

- 0022 (01

- 2005)