TP 7245E 1 of 1

AD Number: CF-2014-35

Issue Date: 3 October 2014

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.

Number: CF-2014-35 Effective Date: 17 October 2014

ATA: 57 Type Certificate: A-131

Subject: Wings – Missing Insulation Blankets in the Upper Wing Box Area

Applicability: Bombardier Inc. models CL-600-2C10, CL-600-2D15 and CL-600-2D24 aeroplanes, with 

serial numbers listed in section 1.A.(1) of Bombardier Service Bulletin 670BA-57-024, 

Initial Issue.

Compliance: As indicated below, unless already accomplished.

Background: It was discovered that some operators have inadvertently removed the existing insulation 

blankets from the upper wing box area while incorporating Bombardier Service 

Bulletin (SB) 670BA-36-016 to comply with AD CF-2012-06. 

Without insulation blankets on the upper wing box area, there may be inadequate thermal 

protection to prevent fuel ignition in the event of an undetected bleed air leak due to a 

cracked or ruptured bleed-air duct.

This AD mandates the inspection and rectification, as required, of the insulation blankets 

in the upper wing box area.

Corrective Actions:

A. Within 800 hours air time or 4 months, whichever occurs first, from the effective date 

of this AD, inspect the insulation blankets in the upper wing box area in accordance 

with the Accomplishment Instructions in Part A of the Bombardier SB 670BA-57-024, 

Initial Issue, dated 23 July 2014, or later revisions approved by the Chief, Continuing 

Airworthiness, Transport Canada.

1. If any blankets are missing, proceed to paragraph B of this AD.

2. If no blankets are missing, compliance with this AD is complete.

B. Within 1200 hours air time or 6 months, whichever occurs first, from the effective date 

of this AD, install the missing insulation blankets in accordance with the 

Accomplishment Instructions in Part B of the SB specified in paragraph A of this AD.

Authorization: For the Minister of Transport, 

ORIGINAL SIGNED BY

Robin Lau

Acting Chief, Continuing Airworthiness

Contact: Robert Farinas, 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. 

For all changes to your mailing address, contact your TC Regional Aircraft Registration Office at 1-800-305-2059,

option 1 for English, 2 for Aircraft Registration and then select the appropriate region.

24-0022 (01-2005)