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 na me. 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 Can ada, Ottawa, telephone 613 952-4357.

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 Communicat ions 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

2 4-0022 ( 01-2005 ) 1/6 No

. CF-2013-07
Issue Date 1 March 2013

Number: CF-2013-07

Subject: Fuel System Safety - Introduction of Design changes

Effective: 14 March 2013

Applicability: Bombardier Inc. DHC-8 aeroplane models 102, 103, 106, 201, 202, 301, 311, 314 and 315 aeroplane models with serial numbers 002 through 672.

Compliance: As indicated below, unless already accomplished.

Background: Bombardier Aerospace has completed a syst em safety review of the aeroplane fuel system against fuel tank safety standards in troduced in Chapter 525 of the Airworthiness Manual through Notice of Proposed Am endment (NPA) 2002-043. The identified non-compliances were then assessed us ing Transport Canada Policy Letter No. 525- 001, to determine if mandatory corrective action is required.

The assessment showed that a number of modifi cations to the fuel system are required to mitigate unsafe conditions that could resu lt in potential ignition sources within the fuel system.

AD CF-2007-32R1 is issued in conjunction with the issuance of this AD, to clarify the phase-in schedule for Fuel System Limitations (FSL) tasks associated with modifications mandated by this AD.

Corrective Actions: Part I

Within 6000 hours air time or 36 months, whichever occurs first, from the effective date of this AD, carry out the applicable modifications detailed below:

A. Applicable to aeroplane serial numbers 003 through 624:

Modsum 8Q101512, Fuel System - Fuel Tank Mechanical Design, SFAR 88 Compliance. Approved instructions for the incorporation of the Modsum are contained in Bombardier Service Bulleti n (SB) 8-57-44 Revision D, dated 08 Oct 2008, or later revisions approved by the Ch ief, Continuing Airworthiness, Transport Canada.

B. Applicable to aeroplane serial numbers 003 through 629 with a long range fuel system installed in accordance with Change Request (CR) 828CH00044, CR828SO08061, Special Order Option (SOO) 8061, CR828CH00027 or CR828SO00006:

Modsum 8Q902091, Fuel - Fuel Tank Sy stem Design - Long Range Fuel Tanks - SFAR 88. Approved instructions for the in corporation of the Modsum are contained in Bombardier SB 8-28-39 Revision B, dated 14 Aug 2008, or later revisions approved by the Chief, Continuing Airworthiness, Transport Canada.No. N ° CF-2013-07 2/6

Incorporation of Modsum 8Q902091 prior to the effective date of this AD in accordance with the Accomplishment Instructions contained in Revision A of Bombardier SB 8-28-39 meets the requirements of this paragraph.

C. A pplicable to aeroplane serial numbers 003 through 624 with SOO 8155 or 849SO08155 or SOO 8098 or SOO 8099 or SOO 8062 or Supplemental Type Certificate SA85-1 or Limited Suppl emental Type Certif icate W-LSA98-005/D incorporated:

Modsum 8Q902144, Fuel - APU Fittings, Jumpers and Interfaces in the Tank - Improvements to Conductivity for SFAR 88 Compliance. Approved instructions for the incorporation of the Modsum are c ontained in Bombardier SB 8-28-44 Revision B, dated 25 July 2009, or later revisi ons approved by the Chief, Continuing Airworthiness, Transport Canada.

Incorporation of Modsum 8Q902144 prior to the effective date of this AD in accordance with the Accomplishment Instruct ions contained in the Initial Issue or Revision A of Bombardier SB 8-28-44 meet s the requirements of this paragraph.

D. Applicable to aeroplane serial numbers 003 through 624:

Modsum 8Q101865, Fuel System - Fuel Tank Mechanical Design, SFAR 88 Compliance (Retrofit). Approved instructions for the incorporation of the Modsum are contained in Bombardier SB 8-28-47 Initial Issue, dated 02 May 2008, or later revisions approved by the Chief, Conti nuing Airworthiness, Transport Canada.

E. Applicable to DHC-8 models102, 103 and 106 aeroplanes, serial numbers 002 through 014:

Modsum 8Q101916, Fuel - Secondary Pressure Relief Valve part number 232935-2 - Rework - SFAR 88 Compliance. Approved in structions for the incorporation of the Modsum are contained in Bombardier SB 8-28-58 Initial Issue, dated 25 Jul 2011, or later revisions approved by the Chief, C ontinuing Airworthiness, Transport Canada.

F. Applicable to aeroplane serial numbers 002 through 629 with a long range fuel system installed in accordance wi th CR828CH00044, CR828SO08061, SOO 8061, CR828CH00027 or CR828SO00006, including aeropl anes with metric refuel/defuel indicators installed in accordance with CR828CH00029:

Modsum 8Q902122, Fuel - Long Range Fuel Tanks - Refuel/Defuel with Metric and Imperial Indicators - Wiring Change at Refuel /Defuel Panel for Pressure Relief Valve (PRV) SFAR 88 Compliance. Approved instru ctions for the incorporation of the Modsum are contained in Bombardier SB 8-28-41 Revision B, dated 8 August 2012, or later revisions approved by the Chie f, Continuing Airworthiness, Transport Canada.

Incorporation of Modsum 8Q902122 prior to the effective date of this AD in accordance with the Accomplishment Instruct ions contained in the Initial Issue or Revision A of Bombardier SB 8-28-41 meet s the requirements of this paragraph.

G. Applicable to aeroplane serial numbers 002 through 619 with imperial refuel/defuel indicators, excluding aeroplanes with a long range fuel system installed in accordance with CR828CH00044, CR828SO08061, SOO 8061, CR828CH00027 or CR828SO00006:

Modsum 8Q101511, Fuel - Refuel/Defuel - Wiring Change at Refuel/Defuel Panel for Pressure Relief Valve (PRV) - SFAR 88 Co mpliance. Approved instructions for the incorporation of the Modsum are contai ned in Bombardier SB 8-28-35 Revision B, dated 3 June 2009, or later revisions approved by the Chief, Continuing Airworthiness, Transport Canada.No. N ° CF-2013-07 3/6

Incorporation of Modsum 8Q101511 prior to the effective date of this AD in accordance with the Accomplishment Instruct ions contained in the Initial Issue or Revision A of Bombardier SB 8-28-35 meet s the requirements of this paragraph.

H. Applicable to aeroplane serial numbers 002 through 619 with metric refuel/defuel indicators installed in accordance wi th CR828CH00020, excluding aeroplanes with a long range fuel system installed in accordance with CR828CH00044, CR828SO08061, SOO 8061, CR828CH00027 or CR828SO00006:

Modsum 8Q901117, Fuel - Refuel/Defuel With Metric Indicators - Wiring Change at Refuel/Defuel Panel for Pressure Relie f Valve (PRV) - SFAR 88 Compliance. A pproved instructions for the incorporat ion of the Modsum are contained in Bombardier SB 8-28-43 Revision A, dated 25 June 2009, or later revisions approved by the Chief, Continuing Airworthiness, Transport Canada.

Incorporation of Modsum 8Q901117 prior to the effective date of this AD in accordance with the Accomplishment Instruct ions contained in the Initial Issue of Bombardier SB 8-28-43 meets the requirements of this paragraph.

I. Applicable to DHC-8 models 102, 103, 106, 201, 202, 301, 311, 314 and 315 aeroplanes, serial numbers 003 through 619, excluding aeroplanes that have incorporated Modsum 8Q101652 in accordance with the Accomplishment Instructions contained in the Initial Issue, Revision A or Revision B of Bombardier SB 8-28-36 before the effective date of this AD:

Modsum 8Q101652, Fuel - Fuel Quantity I ndication - Wire Routing Segregation and Identification - SFAR 88 Compliance. Approv ed instructions for the incorporation of the Modsum are contained in Bombardi er SB 8-28-36 Revision C, dated 7 October 2009, or later revisions approved by the Ch ief, Continuing Airworthiness, Transport Canada.

Note: For DHC-8 models102, 103, 106, 201 and 202 aeroplanes with an A ctive Noise and Vibration Suppression (ANVS) syst em installed, that have incorporated Modsum 8Q101652 in accordance with the Accomplishment Instructions contained in the Initial Issue, Revision A or Revi sion B of Bombardier SB 8-28-36 before the effective date of this AD, refer to Pa rt II, paragraph A of this AD for additional requirements.

J. Applicable to aeroplane serial numbers 003 through 672 with ModSum 8Q101513 or 8Q101652 , excluding aeroplanes with a long range fuel system installed in accordance with CR828CH00044, CR828SO08061, SOO 8061, CR828CH00027 or CR828SO00006:

Modsum 8Q101907, Fuel - Fuel Quantity Gauging System (FQGS) - Wire Routing Segregation - Installation of a Top Hat Support Between Stn X-405 to X-424 at Y-38 - SFAR 88 Compliance. Approved instructions for the incorporation of the Modsum are contained in Bombardier SB 8-28-48 Revision A, dated 27 February 2012, or later revisions approved by the Chief, C ontinuing Airworthiness, Transport Canada.

Incorporation of Modsum 8Q101907 prior to the effective date of this AD in accordance with the Accomplishment Instruct ions contained in the Initial Issue of Bombardier SB 8-28-48 meets the requirements of this paragraph.

K. Applicable to aeroplane serial number s 003 through 619, excluding aeroplanes with a long range fuel system install ed in accordance with CR828CH00044, CR828SO08061, SOO 8061, CR828CH00027 or CR828SO00006, and excluding aeroplanes that have incorporated Mods um 8Q101652 in accordance with the Accomplishment Instructions contained in Revision C or earlier revisions of Bombardier SB 8-28-36 before the effective date of this AD:No. N ° CF-2013-07 4/6

Modsum 8Q101908, Fuel System - Fuel Quantity Indication - Wire Routing Segregation, Installation of Dual Spacers - SFAR 88. Approved instructions for the incorporation of the Modsum are contained in Bombardier SB 8-28-55 Initial Issue, dated 23 July 2012, or later revisions approved by the Chief, Continuing Airworthiness, Transport Canada.

Note: For aeroplanes that have incorporated Modsum 8Q101652 in accordance with the Accomplishment Instructions contained in the Revision C or earlier revisions of SB 8-28-36 before the effective date of this AD, refer to Part III, paragraph A of this AD for additional requirements.

L. A pplicable to aeroplane serial numbers 002 through 629, with a long range fuel system installed in accordance wi th CR828CH00044, CR828SO08061, SOO 8061, CR828CH00027 or CR828SO00006, excluding aeroplanes that have incorporated Modsum 8Q902064 in accordance with the A ccomplishment Instructions contained in the Initial Issue of Bombardier SB 8-28- 42 before the effective date of this AD:

Modsum 8Q902064, Fuel - Fuselage and Front Spar - Segregation and ReIdentification of Wiring Harnesses fo r Long Range Fuel Quantity Indication. Approved instructions for the incorpor ation of the Modsum are contained in Bombardier SB 8-28-42 Revision A, dated 1 October 2008, or later revisions approved by the Chief, Continuing Airworthiness, Transport Canada.

Note: For DHC-8 models102, 103, 106, 201 and 202 aeroplanes with an ANVS system installed that have incorporat ed Modsum 8Q902064 prior to the effective date of this AD in accordance with the A ccomplishment Instructions contained in the Initial Issue of Bombardier SB 8-28-42, re fer to Part II, paragraph B of this AD for additional requirements.

M. Applicable to aeroplane serial numbers 003 through 672 with a long range fuel system installed in accordance wi th CR828CH00044, CR828SO08061, SOO 8061, CR828CH00027 or CR828SO00006, and with Modsum 8Q902064 and either Modsum 8Q101513 or Modsum 8Q101652 :

Modsum 8Q902382, Fuel - Fuel Quantity Gauging System (FQGS) - Wire Routing Segregation - Installation of a Top Hat Support Between Stn X-405 to X-424 at Y-38 - Long Range Aircraft - SFAR 88 Complianc e. Approved instructions for the incorporation of the Modsum are contai ned in Bombardier SB 8-28-49 Revision A, dated 23 July 2012, or later revisions approved by the Chief, Continuing Airworthiness, Transport Canada.

Incorporation of Modsum 8Q902382 prior to the effective date of this AD in accordance with the Accomplishment Instruct ions contained in the Initial Issue of Bombardier SB 8-28-49 meets the requirements of this paragraph.

N. A pplicable to aeroplane serial numbers 003 through 629 with a long range fuel system installed in accordance wi th CR828CH00044, CR828SO08061, SOO 8061, CR828CH00027 or CR828SO00006, excluding aeroplanes that have incorporated Modsum 8Q902064 in accordance with the A ccomplishment Instructions contained in Revision A or Initial Issue of Bombardi er SB 8-28-42 before the effective date of this AD:

Modsum 8Q902383, Fuel System - Fuel Quantity Indication - Wire Routing Segregation, Installation of Dual S pacers (Long Range Aircraft) - SFAR 88. A pproved instructions for the incorporat ion of the Modsum are contained in Bombardier SB 8-28-56 Initial Iss ue, dated 23 July 2012, or later revisions approved by the Chief, Continuing Airworthiness, Transport Canada.No. N ° CF-2013-07 5/6

Note: For aeroplanes that have incorporated Modsum 8Q902064 in accordance with the Accomplishment Instructions contai ned in Revision A or Initial Issue of Bombardier SB 8-28-42 before the effectiv e date of this AD, refer to Part III, paragraph B of this AD for additional requirements.

Part II

Within 12 000 hours air time or 72 months, whic hever occurs first, from the effective date of this AD, carry out the applicable modifica tions/inspections/rectifi cations detailed below:

A. Applicable to DHC-8 models102, 103, 106, 201 and 202 aeroplanes, serial numbers 003 through 619, with an ANVS system insta lled, that have incorporated Modsum 8Q101652 in accordance with the Accomplis hment Instructions contained in the Initial Issue, Revision A or Revision B of Bombardier SB 8-28-36 before the effective date of this AD:

Modsum 8Q101652, Fuel - Fuel Quantity I ndication - Wire Routing Segregation and Identification - SFAR 88 Compliance, in accordance with Bombardier SB 8-28-36, Revision C, dated 7 October 2009, or la ter revisions approved by the Chief, Continuing Airworthiness, Transport Canada.

B. Applicable to DHC-8 models102. 103, 106, 201 and 202 aeroplanes, serial numbers 002 through 629, with an ANVS system insta lled, that have incorporated Modsum 8Q902064 in accordance with the Accomplis hment Instructions contained in the Initial Issue of Bombardier SB 8-28-42 before the effective date of this AD:

Modsum 8Q902064, Fuel - Fuselage and Front Spar - Segregation and ReIdentification of Wiring Harnesses for Long Range Fuel Quantity Indication, in accordance with Bombardier SB 8-28-42, Re vision A, dated 1 October 2008, or later revisions approved by the Chief, Conti nuing Airworthiness, Transport Canada.

C. Applicable to DHC-8 models102, 103, 106, 201 and 202 aeroplanes, serial numbers 620 through 666 with an ANVS System installed:

Perform a one-time inspection of the Fuel Quantity Indicating System (FQIS) wiring harness routing and the applicable rectif ication in accordance with the Accomplishment Instructions of Bombardi er SB 8-28-52, dated 3 Nov 2009, or later revisions approved by the Chief, Conti nuing Airworthiness, Transport Canada.

Inspection and rectification carried out in accordance with the Accomplishment Instructions of Bombardier SB 8-28-53, dated 3 Nov 2008 before the effective date of this AD meets the requirements of this paragraph.

Part III

Within 18 000 hours air time or 108 months, wh ichever occurs first, from the effective date of this AD, carry out the applicable modifications detailed below:

A. Applicable to aeroplane serial numbers 003 through 672, with Modsum 8Q101513 installed or that have incorporated Modsum 8Q101652 in accordance with the Accomplishment Instructions contained in Revision C or earlier revisions of Bombardier SB 8-28-36 before the effect ive date of this AD, excluding aeroplanes with a long range fuel system insta lled in accordance with CR828CH00044, CR828SO08061, SOO 8061, CR828CH00027 or CR828SO00006:

Modsum 8Q101908 Fuel System - Fuel Quantity Indication - Wire Routing Segregation, Installation of Dual Spacers - SFAR 88. Approved instructions for the incorporation of the Modsum are contained in Bombardier SB 8-28-55, Initial Issue, dated 23 July 2012, or later revisions approved by the Chief, Continuing Airworthiness, Transport Canada.No. N ° CF-2013-07 6/6

B. Applicable to aeroplane serial numbers 003 through 672 with a long range fuel system installed in accordance wi th CR828CH00044, CR828SO08061, SOO 8061, CR828CH00027 or CR828SO00006, with Modsum 8Q902064 installed on delivery or that have incorporated Modsum 8Q902064 in accordance with the instructions contained in Revision A or Initial Issue of Bombardier SB 8-28-42 before the effective date of this AD.

Modsum 8Q902383, Fuel System - Fuel Quantity Indication - Wire Routing Segregation, Installation of Dual Spacers - SFAR 88. Approved instructions for the incorporation of the Modsum are contained in Bombardier SB 8-28-56, Initial Issue, dated 23 July 2012, or later revisions approved by the Chief, Continuing Airworthiness, Transport Canada.

Authorization: For the Minister of Transport, Infrastructure and Communities,



### ORIGINAL SIGNED BY Derek Ferguson Chief, Continuing Airworthiness

Contact: Philip Tang, Continuing Airworthiness, Ottawa, telephone 613-952-4357, facsimile 613-996-9178 or e-mail ADs@tc.gc.ca or any Transport Canada Centre.