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 TP 7245E

EMERGENCY

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.

1/2 No.

CF-2014-19

Issue Date

20 June 2014

Number: CF-2014-19

ATA: 78 Type Certificate: A-131

Subject: Engine Exhaust - Engine Thrust Reverser Actuator Attachment Structure 

Failure

Effective Date: 20 June 2014

Applicability: Bombardier Inc. model CL-600-1A11 aeroplanes, serial numbers 1004 to 1085.

Compliance: As indicated below, unless already accomplished.

Background: There have been two reported incidents of partial deployment of an engine thrust 

reverser in-flight, caused by a failure of the translating sleeve at the thrust reverser 

actuator attachment points. Inspection of the same area on some other thrust 

reversers revealed cracks emanating from the holes under the nut plates.

In both incidents, the affected aeroplane landed safely without any noticeable 

controllability issues, however structural failure of thrust reverser actuator attachment 

points resulting in thrust reverser deployment or dislodgment in flight is a safety 

hazard warranting an immediate mitigating action.

To help in mitigating any immediate safety hazard, Bombardier Inc. has revised the 

Aircraft Flight Manual (AFM) through Temporary Revisions (TR) 600/29, 600/30, 

600-1/24 and 600-1/26, to prohibit the thrust reverser operation on affected 

aeroplanes. Additionally, as an interim corrective action, Bombardier Inc. has issued 

alert service bulletin (ASB) A600-0769 requiring an inspection and/or a mechanical 

lock out of the thrust reverser to prevent it from moving out of forward thrust mode.

This AD is issued to mandate the incorporation of revised AFM procedures per TR 

600/29, 600/30, 600-1/24 and 600-1/26 and compliance with ASB A600-0769 for all 

affected CL-600-1A11 aeroplanes.

Corrective 

Actions:

Part 1 - AFM Revision

Within 24 hours of the effective date of this AD, amend the AFM for the affected 

CL-600-1A11 aeroplanes by incorporating the procedural changes introduced 

through TR 600/30, 600-1/26 dated 14 June 2014 and TR 600/29, 600-1/24 dated 

20 June 2014, as applicable, or later revisions of these procedures as approved by 

Transport Canada.

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)
No.

N° CF-2014-19 2/2

Part 2 - Inspection For Cracks

Within 25 flight cycles or 90 days, whichever occurs first, from the effective date of 

this AD, comply with Part 2 paragraph A or Part 2 paragraph B of this AD.

A- Inspection

Inspect both engine thrust reversers on the affected aeroplanes and perform repeat 

inspections every 100 flight cycles, in accordance with the Part A instructions of ASB 

A600-0769 dated 19 June 2014 or later revision approved by the Chief, Continuing 

Airworthiness, Transport Canada. If any crack is found, comply with paragraph B 

below prior to next flight.

B - Modification Of Thrust Reverser

Modify the thrust reversers on both engines of the affected aeroplanes in 

accordance with Part B of ASB A600-0769 dated 19 June 2014 or later revision 

approved by the Chief, Continuing Airworthiness, Transport Canada.

Compliance with Part 2 paragraph B of this AD is the terminating action for the 

Part 2 paragraph A requirements of this AD.

Part 3

Within 24 months from the compliance with Part 2 paragraph B of this AD,

repair/modify the affected thrust reversers in accordance with methods developed by 

Bombardier Inc. and approved by the Chief Continuing Airworthiness, 

Transport Canada.

Authorization: For the Minister of Transport,

ORIGINAL SIGNED BY

Derek Ferguson

Chief, Continuing Airworthiness

Contact: A K Durrani, Continuing Airworthiness, Ottawa, telephone 613-952-4357, facsimile 

613-996-9178 or e-mail AD-CN@tc.gc.ca or any Transport Canada Centre.