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. 

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)

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 system safety review of the aeroplane fuel 

system against fuel tank safety standards introduced in Chapter 525 of the Airworthiness 

Manual through Notice of Proposed Amendment (NPA) 2002-043. The identified 

non-compliances were then assessed using Transport Canada Policy Letter No. 525-

001, to determine if mandatory corrective action is required. 

The assessment showed that a number of modifications to the fuel system are required 

to mitigate unsafe conditions that could result 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 Bulletin (SB) 8-57-44 Revision D, dated 08 Oct 

2008, or later revisions approved by the Chief, 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 System Design - Long Range Fuel Tanks -

SFAR 88. Approved instructions for the incorporation 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. Applicable 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 Supplemental Type Certificate 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 contained in Bombardier SB 8-28-44 Revision 

B, dated 25 July 2009, or later revisions 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 Instructions contained in the Initial Issue or 

Revision A of Bombardier SB 8-28-44 meets 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, Continuing 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 instructions 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, Continuing Airworthiness, Transport Canada. 

F. Applicable to aeroplane serial numbers 002 through 629 with a long range fuel 

system installed in accordance with CR828CH00044, CR828SO08061, SOO 8061, 

CR828CH00027 or CR828SO00006, including aeroplanes 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 instructions 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 Chief, Continuing Airworthiness, Transport 

Canada. 

Incorporation of Modsum 8Q902122 prior to the effective date of this AD in 

accordance with the Accomplishment Instructions contained in the Initial Issue or 

Revision A of Bombardier SB 8-28-41 meets 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 Compliance. Approved instructions for the 

incorporation of the Modsum are contained 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 Instructions contained in the Initial Issue or 

Revision A of Bombardier SB 8-28-35 meets the requirements of this paragraph. 

H. Applicable to aeroplane serial numbers 002 through 619 with metric refuel/defuel 

indicators installed in accordance with 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 Relief Valve (PRV) - SFAR 88 Compliance. 

Approved instructions for the incorporation 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 Instructions 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 Indication - Wire Routing Segregation and 

Identification - SFAR 88 Compliance. Approved instructions for the incorporation of 

the Modsum are contained in Bombardier SB 8-28-36 Revision C, dated 7 October

2009, or later revisions approved by the Chief, Continuing Airworthiness, Transport 

Canada. 

Note: For DHC-8 models102, 103, 106, 201 and 202 aeroplanes with an Active 

Noise and Vibration Suppression (ANVS) system installed, 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, refer to Part 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, Continuing Airworthiness, Transport Canada. 

Incorporation of Modsum 8Q101907 prior to the effective date of this AD in 

accordance with the Accomplishment Instructions contained in the Initial Issue of 

Bombardier SB 8-28-48 meets the requirements of this paragraph. 

K. Applicable to aeroplane serial numbers 003 through 619, excluding aeroplanes with 

a long range fuel system installed in accordance with CR828CH00044, 

CR828SO08061, SOO 8061, CR828CH00027 or CR828SO00006, and excluding 

aeroplanes 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 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. Applicable to aeroplane serial numbers 002 through 629, with a long range fuel 

system installed in accordance with CR828CH00044, CR828SO08061, SOO 8061, 

CR828CH00027 or CR828SO00006, excluding aeroplanes that have incorporated 

Modsum 8Q902064 in accordance with the Accomplishment 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. 

Approved instructions for the incorporation 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 incorporated Modsum 8Q902064 prior to the effective 

date of this AD in accordance with the Accomplishment Instructions contained in the 

Initial Issue of Bombardier SB 8-28-42, refer 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 with 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 Compliance. Approved instructions for the 

incorporation of the Modsum are contained 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 Instructions contained in the Initial Issue of 

Bombardier SB 8-28-49 meets the requirements of this paragraph. 

N. Applicable to aeroplane serial numbers 003 through 629 with a long range fuel 

system installed in accordance with CR828CH00044, CR828SO08061, SOO 8061, 

CR828CH00027 or CR828SO00006, excluding aeroplanes that have incorporated 

Modsum 8Q902064 in accordance with the Accomplishment 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 (Long Range Aircraft) - 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. 
No.

N° CF-2013-07 5/6 

Note: For aeroplanes that have incorporated Modsum 8Q902064 in accordance with 

the Accomplishment Instructions contained in Revision A or Initial Issue of 

Bombardier SB 8-28-42 before the effective 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, whichever occurs first, from the effective date 

of this AD, carry out the applicable modifications/inspections/rectifications detailed below:

A. Applicable to DHC-8 models102, 103, 106, 201 and 202 aeroplanes, serial numbers 

003 through 619, with an ANVS system installed, 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 Indication - Wire Routing Segregation and 

Identification - SFAR 88 Compliance, in accordance with Bombardier SB 8-28-36, 

Revision C, dated 7 October 2009, or later 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 installed, that have incorporated Modsum 

8Q902064 in accordance with the Accomplishment 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, Revision A, dated 1 October 2008, or later 

revisions approved by the Chief, Continuing 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 rectification in accordance with the 

Accomplishment Instructions of Bombardier SB 8-28-52, dated 3 Nov 2009, or later 

revisions approved by the Chief, Continuing 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, 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 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 effective date of this AD, excluding aeroplanes

with a long range fuel system installed 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 with 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.