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.

1/2 No.

CF-2014-23

Issue Date

18 July 2014

Number: CF-2014-23

ATA: 27 Type Certificate: A-177

Subject: Flight Controls - Restricted Movement of the Aileron Pulley and Control Cables

Effective Date: 31 July 2014

Applicability: Bombardier Inc. model BD-700-1A10 and BD-700-1A11 aeroplanes, serial number 9002 

through 9520 and 9998.

Compliance: As indicated below, unless already accomplished.

Background: There have been several reports whereby pilots have experienced difficulty in lateral control 

following climb through heavy rain conditions. In each event, the pilots were able to overcome 

this difficulty without disconnecting the aileron control. An investigation has determined that 

the root cause of the restricted movement of the aileron was due to water ingress into the 

wing root aileron control pulley assembly through a gap on the wing-to-fuselage fairing 

resulting in freezing of the aileron control system.

If not corrected, this condition could result in reduced lateral control of the aeroplane.

This AD mandates the incorporation of a cover for the aileron pulley assembly to prevent 

water ingress in the aileron control pulley assembly.

Corrective 

Actions:

Part I – Applicable to aeroplanes that have not incorporated a cover for the No. 1 

Aileron Pulley

Within 150 flight cycles from the effective date of this AD, inspect, rework if required , and 

install a cover for the No. 1 Aileron Pulley in accordance with the Accomplishment Instructions 

of the applicable Bombardier Service Bulletins (SB) as shown in the table below:

Aeroplane Model Applicable Service Bulletins

BD-700-1A10 700-27-076, Revision (Rev.) 2, dated 17 June 2014 or later revisions 

approved by the Chief, Continuing Airworthiness, Transport Canada, 

or 

700-27-6004 Rev. 2, dated 17 June 2014 or later revisions approved 

by the Chief, Continuing Airworthiness, Transport Canada.

BD-700-1A11 700-1A11-27-034 Rev. 2, dated 17 June 2014 or later revisions 

approved by the Chief, Continuing Airworthiness, Transport Canada, 

or 

700-27-5004 Rev.2, dated 17 June 2014 or later revisions approved by 

the Chief, Continuing Airworthiness, 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-2014-23 2/2

Aeroplanes that have incorporated the Service Request for Product Support Action (SRPSA), 

as listed in Table 1 of the Paragraph 1, Planning Information, in the SB 700-27-6004, 

SB 700-27-076 and SB 700-1A11-27-034 meet the intent of this AD and no further action is 

required. 

Accomplishment in accordance with Revision 1 of the above mentioned SBs, all dated 16 July 

2012, also satisfies the requirements of this AD.

Part II – Applicable to aeroplanes that have incorporated a cover for the No.1 Aileron 

Pulley

For aeroplanes that have incorporated a cover for the No1. Aileron Pulley in accordance with 

Basic Issue of the above mentioned SBs, within 150 flight cycles from the effective date of 

this AD, perform an inspection and rework as required, in accordance with the 

Accomplishment Instructions of Paragraph 2.B, Part A of the above mentioned SBs.

For aeroplanes that have incorporated the Service Non-Incorporated Engineering Orders 

(SNIEO) or Service Requests for Product Support Action (SRPSA) which are listed in Table 2 

of Paragraph 1, Planning Information, in the SB 700-27-6004, SB 700-27-076, and SB 

700-1A11-27-034, within 150 flight cycles from the effective date of this AD, do the reidentification of the overwing panels in accordance with Part A, Paragraph 2.B(2)(g) of the 

above mentioned SBs. 

Authorization: For the Minister of Transport,

ORIGINAL SIGNED BY

Robin Lau

Acting Chief, Continuing Airworthiness

Contact: Gordanko Jeremic, Continuing Airworthiness, Ottawa, telephone 613-952-4357, facsimile 

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