Transport Transports 

Canada Canada

 TP 7245E

 

AIRWORTHINESS DIRECTIVE

The following airworthiness directive (AD) may be applicable to an aircraft which 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 registered aircraft is contingent upon compliance with all applicable ADs. Failure to comply with the requirements of an AD may 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 Canada, Ottawa, telephone 613 952-4357.

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 0N8, or 1-800-305-2059, or www.tc.gc.ca/civilaviation/communications/centre/ address.asp 

24-0022 (01-2005)

1/1 No.

CF-2013-24R1

Issue Date 

 24 December 2013 

Number: CF-2013-24R1 

Subject: Nose Landing Gear Alternate Extension Actuator – No Instructions for 

Continued Airworthiness 

Effective: 7 January 2014 

Revision: Supersedes AD CF-2013-24, issued 13 August 2013. 

Applicability: Bombardier Inc: 

Model CL-600-2C10 aeroplanes, serial number 10002 and subsequent, 

Model CL-600-2D15 and CL-600-2D24 aeroplanes, serial number 15001 and subsequent.

Compliance: Within 30 days from the effective date of the original issue of this AD (26 August 2013), 

unless already accomplished. 

Background: It was discovered that there are no instructions for continued airworthiness for the Nose 

Landing Gear (NLG) alternate extension actuator. 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 NLG could occur. Failure of the NLG alternate release 

system could prevent the nose landing gear from extending in the case of a failure of the 

normal NLG extension system. 

This AD is to mandate the incorporation of a new maintenance task to prevent failure of the 

NLG alternate release system. 

Revision 1 of this AD changes the phase-in time to be based on the NLG manual release 

actuators instead of aeroplanes. 

Corrective 

Actions: 

A. Amend the Transport Canada approved maintenance schedule by incorporating task 

number 320100-225 – Restoration of the NLG Manual Release Actuator, as introduced 

in Maintenance Requirements Manual, CSP B-053, Part 1, Revision 13, dated

25 August 2012. 

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 the NLG manual release actuators that have accumulated 14 500 flight 

cycles or more, as of the effective date of this AD: within 5500 flight cycles from the 

effective date of this AD, perform initial restoration task 320100-225. 

Authorization: For the Minister of Transport, 

ORIGINAL SIGNED BY 

Philip Tang 

Acting 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.