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.

1/1 No.

CF-2014-25

Issue Date

7 August 2014

Number: CF-2014-25

ATA: 52 Type Certificate: A-177

Subject: Doors - Fuel Ingress into Aft Equipment Bay

Effective Date: 21 August 2014

Applicability: Bombardier Inc. models BD-700-1A10 and BD-700-1A11, serial numbers 9001

through 9476 and 9998.

Compliance: Within 24 months from the effective date of this AD, unless already accomplished.

Background: There have been two reports of fluid entry and accumulation in the aft equipment bay. 

The leaked fluid in the first incident was fuel and the fluid in the second incident was 

test dye. Further investigation revealed that leaked fluid from the aft fuel tank drain 

entered the bay through the slot in the door latch mechanism. 

Flammable fluid entry and accumulation in the aft equipment bay, in excessive quantities, 

could exceed safe levels maintained by the drainage and ventilation system.

Bombardier Inc. has issued several Service Bulletins (SB) to modify the Aft Equipment 

Bay by installing a cover to the door latch mechanism in order to reduce the risk of fuel 

entry into it. This AD mandates the incorporation of the applicable Bombardier Inc. SBs to 

rectify this problem.

Corrective 

Actions:

Modify the Aft Equipment Bay by incorporating the applicable Bombardier Inc. SBs as 

shown in the table below:

Aeroplane Model Applicable Service Bulletins

BD-700-1A10 700-52-042 Basic Issue dated 29 March 2012, or later revision 

approved by the Chief, Continuing Airworthiness, Transport 

Canada, or 700-52-6007 Basic Issue dated 29 March 2012, or 

later revision approved by the Chief, Continuing Airworthiness, 

Transport Canada. 

BD-700-1A11 700-1A11-52-019 Basic Issue dated 29 March 2012, or later 

revision approved by the Chief, Continuing Airworthiness, 

Transport Canada, or 700-52-5007 Basic Issue dated 

29 March 2012, or later revision approved by the Chief, 

Continuing Airworthiness, Transport Canada.

Authorization: For the Minister of Transport,

ORIGINAL SIGNED BY

Derek Ferguson

Chief, Continuing Airworthiness

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

24-0022 (01-2005)