TP 7245E 1 of 2 AD Number: CF - 201 4 - 39 Issue Date: 4 November 201 4 

# 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 invalida te the flight authorization of the aircraft. Alternative means of complianc e 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 C anada, Ottawa, telephone 613 952 - 4357. Number: CF - 201 4 - 39 Effective Date: 1 8 November 2 0 1 4 ATA: 52 Type Certificate: A - 177 Subject : Doors

– Passenger Door Tensator Springs Failure Replacement: Supersedes AD CF - 2010 - 14, issued 13 May 2010. Applicability: Bombardier Inc. m odel BD - 700 - 1A10 and BD - 700 - 1A11 aeroplanes , s erial n umbers (S/N s ) 9002 and s ubsequent

. Compliance: As indicated below, unless already accomplished. Background: Following the issuance of AD CF - 2010 - 14, additiona l qualification testing of the passenger door tensator spring, Part Number ( P/N ) GS321 - 0580 - 1, determined that the tensator springs could be susceptible to failure prior to reaching the life limit mandated by AD CF - 2010 - 14. In addition, there have been in - service reports of passenger door tensator spring failures. Investigation determined that the material used to manufacture the tensator springs were improperly heat treated. The passenger door assembly is installed with four tensator springs that assist the door actuator in opening and closing the door. In - service experience has shown that a failed tensator spring could uncoil and foul up the rotating tensator spools, resulting in the inability to open the main passenger door. The inability to open the ma in passenger door could impede evacuation in the event of an emergency. This AD mandates the revision to the approved maintenance schedule to reduce the repetitive discard task interval and mandates the replacement of non - conforming tensator springs. Corrective Actions: Part I – Life Limit Revision: Applicable to all aeroplanes Within 30 days from the effective date of this AD, amend the Transport Canada approved maintenance schedule by revising the repetitive discard task, Task Number 52 - 11 - 41 - 101, for the passenger door tensator spring, P/N GS321 - 0580 - 1. This task was revised by the following Temporary Revisions (TR s ) to the applicable BD - 700 Time Limits/Maintenance Checks (TLMC), Part 2, Section 5 - 10 - 11: Aeroplane Mod el TLMC Manual Number TR Number Date

BD - 700 - 1A10 GL 700 TLMC TR 5 - 2 - 44 4 June 2014 GL XRS TLMC TR 5 - 2 - 7 4 June 2014 GL 6000 TLMC TR 5 - 2 - 9 4 June 2014

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 Registrat ion Office at 1 - 800 - 305 - 2059, option 1 for English, 2 for Aircraft Registration and then select the appropriate region. 24 - 0022 (01 - 2005)CF - 2014 - 3 9 2 of 2

BD - 700 - 1A11 GL 5000 TLMC TR 5 - 2 - 13 4 June 2014 GL 5000 GVFD TLMC TR 5 - 2 - 9 4 June 2014 The above - referenced TLMC TR s contain a phase - in schedule for aeroplanes with passenger door tensator springs that have exceeded 550 flight cycles. Compliance with superseding TR s or later revisions of the above - mentioned TLMC Manual approved by Transport Canada also meets the requirements of Part I of this AD. Part II – Replacement of Non - Conforming Passenger Door Tensator Springs: Applicable to aeroplanes with S/N s included in Se ction 1.A, Effectivity, of Bombardier Service Bulletin (SB s ) 700 - 52 - 046 dated 4 October 2013, or SB 700 - 1A11 - 52 - 023 dated 4 October 2013 Within 15 months after the effective date of this AD, but prior to exceeding the applicable life limit of the passenger tensator spring specified in Part I of this AD, replace the passenger door tensator springs, P/N GS321 - 0580 - 1. Approved instructions for the replacement of the passenger doors tensator springs are contained in the applicable Bombardier SB s shown in the ta ble below, or later revisions approved by the Chief, Continuing Airworthiness, Transport Canada: Aeroplane Model Bombardier SB Date BD - 700 - 1A10 700 - 52 - 046 4 October 2013 BD - 700 - 1A11 700 - 1A11 - 52 - 023 4 October 2013 For aeroplane s with S/N s 9278 through 9360, previous replacement of the passenger door tensator springs meets the requirements of Part II of this AD. Follow the TLMC , as revised in Part I of this AD for subsequent spring replacements. For all other applicable aeroplanes, accompli shment of the TLMC discard task as revised in Part I of this AD after the effective date of this AD meets the requirements of Part II of this AD. Authorization: For the Minister of Transport, ORIGINAL SIGNED BY Derek Ferguson 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.