Bombardier Service Bulletin 84-32-114

Revision ‘B’ 03 Feb 2015 D H C --- 8 ( D A S H 8 ) S E R V I C E B U L L E T I N 8 4 --- 3 2 --- 1 1 4 Landing Gear - - - Retrofit - - - Redress Gear Harness Routing to Address Interference with Stabilizer Brace - - - ModSum 4- - - 126562 This page transmits Revision ‘B’ of Service Bulletin 84- - -32- - -114, pages 1 thru 22 dated 03 Feb 2015.

This service bulletin is re- - -issued in its entirety for the reasons that follow:

--- t h eDescription section is revised to add additional information --- t h eCompliance section is revised to add Airworthiness Directive number --- t h e Material Price and Availability section is revised to add kits 8MK4615- - -006/- - -007/- - -009/- - -051 and a Note --- t h eReferences section is revised to convey the latest revision of this service bulletin and related engineering documentation --- t h eParts Required Per Aircraft section is revised to add additional parts to kit 8MK4615- - -001, add kits 8MK4615- - -006/- - -007/- - -009/- - -051 --- t h eACCOMPLISHMENT INSTRUCTIONS section is revised to add additional steps and Notes

- - - steps (1) (f) & (g) in the Procedure section are revised to show correct Views --- s t e p ( 2 ) ( g ) i n t h eProcedure section is revised to show the correct flagnote The Compliance in the previous issue of this service bulletin is not affected by this revision. Additional rework to the aircraft is introduced by this revision.

Remove the previous issue of Service Bulletin 84- - -32- - -114 and replace with attached.

Previous issue(s) of Service Bulletin 84- - -32- - -114:

Initial issue - - - Pages 1 thru 22 dated 06 Jun 2013 Revision ‘A’ - - - Pages 1 thru 22 dated 18 Sep 2013

D S.B. 84- - -32- - -114 Page 1 of 22 06 Jun 2013 JR Revision ‘B’ 03 Feb 2015

SERVICE BULLETIN Customer Support ATA SYSTEM: 3211 NUMBER: 84- - -32- - -114

BOMBARDIER AEROSPACE REGIONAL AIRCRAFT CONSIDER THIS

SERVICE BULLETIN TO BE PARTICULARL Y SIGNIFICANT AND

URGE OPERATORS TO PROMPTL Y EVALUATE THE CONTENTS SUBJECT : Landing Gear - - - Retrofit - - - Redress Gear Harness Routing to Address Interference with Stabilizer Brace - - - ModSum 4- - - 126562

1. PLANNING INFORMA TION A. Effectivity Aircraft Affected:

In- - -Service: DHC- - -8 Aircraft Models 401 and 402 Serial Numbers 4001, 4003 thru 4411.

NOTE: If ModSum IS4Q2400028 was previously accomplished on aircraft Serial Numbers 4001 and 4003 thru 4089, no further action is required.

NOTE: If ModSum IS4Q2400029 was previously accomplished on aircraft Serial Numbers 4090 thru 4411, no further action is required.

Production: ModSum 4- - -123798 will be installed before delivery on applicable DHC- - -8 Aircraft at Serial Numbers 4412 thru 4452.

ModSum 4- - -126562 will be installed before delivery on applicable DHC- - -8 Aircraft at Serial Numbers 4453 and subsequent.

S E R V I C E B U L L E T I N 8 4 --- 3 2 --- 1 1 4 S.B. 84- - -32- - -114 Page 2 of 22 06 Jun 2013 JR Revision ‘B’ 03 Feb 2015 NOTE: The instructions in this service bulletin are only applicable to the systems and parts installed at the time of delivery on the aircraft or as changed by Bombardier Aerospace Service Bulletin(s). Before you do this bulletin, examine all STC or equivalent action changes to make sure this bulletin can be completed.

Spares Affected:

None B. Reason Problem: The clearance between the MLG stabilizer brace and the nacelle A- - -Frame can be insufficient for some harness routings. With the insufficient clearance, there is a potential interference between the MLG stabilizer brace, electrical harness and nacelle A- - -Frame possibly causing damage to all three components.

Solution: This service bulletin introduces ModSum 4- - -126562.

The ModSum redresses the MLG electrical harness to improve the clearance between the MLG electrical harness, stabilizer brace and nacelle A- - -Frame.

C. Description The procedures in this service bulletin give the instructions to do the tasks that follow:

- - - nose landing gear lock is engaged

- - - main landing gear lock pins are installed thru each main gear and main gear door mechanism

- - - pressure in the No. 1, 2 & 3 hydraulic systems are depleted

- - - all aircraft electrical power systems are selected to OFF

- - - aircraft is lifted on jacks

- - - LH and RH MLG stabilizer struts are removed as required for access

- - - LH and RH MLG forward doors are removed

- - - work platforms or ladders are set up and properly grounded

- - - LH and RH MLG electrical harness are reworked per drawings 8Z9552 and 8Z9553

S E R V I C E B U L L E T I N 8 4 --- 3 2 --- 1 1 4 S.B. 84- - -32- - -114 Page 3 of 22 06 Jun 2013 JR Revision ‘B’ 03 Feb 2015

- - - clearance between the stabilizer brace and electrical harnesses on both LH and RH nacelles is measured

- - - LH and RH nacelle A- - -Frames and MLG stabilizer braces are checked for signs of chafing

- - - LH and RH MLG forward doors are installed

- - - operational test of the landing gear primary extension and retraction system is done

- - - close out.

D. Compliance Bombardier Inc. highly recommends that ModSum 4- - -126562 be incorporated at the earliest opportunity unless otherwise directed by the operator’s airworthiness authority.

Transport Canada Airworthiness Directive CF- - -2014- - -45.

ModSum IS4Q2400028 or IS4Q2400029 is equivalent to ModSum 4- - -126562.

There is no need to incorporate ModSum 4- - -126562 if ModSums IS4Q2400028 or IS4Q2400029 has already been incorporated.

E. Approval The technical content of this service bulletin has been approved under the authority of the Transport Canada Civil Aviation (TCCA) Design Approval O r g a n i z a t i o n N o : D A O # 9 3 --- Q --- 0 2 .

This service bulletin does not affect Airworthiness Limitations (AWLs) or Damage T olerance Inspections (DTIs).

S E R V I C E B U L L E T I N 8 4 --- 3 2 --- 1 1 4 S.B. 84- - -32- - -114 Page 4 of 22 06 Jun 2013 JR Revision ‘B’ 03 Feb 2015 F. M a n p o w e r It will take an estimated 12 man- - -hours to complete this service bulletin. The breakdown of the man- - -hours is shown in the table that follows:

TASK M A N --- H O U R S J o b S e t --- U p 0.50 Procedure 10.00 T e s t/R T S 1.00 Close- - -Out 0.50 For any on- - -site labor assistance, please speak with a Fleet Services representative for a quote. The Fleet Services group can be contacted via the Q Series T echnical Help Desk by telephone at 416- - -375- - -4000 or email at: thd.qseries@aero.bombardier.com.

G. Material - - - Price and Availability The ModKits required to do this service bulletin are listed in the table below:

Operators should submit a purchase orde r through the Customer Accounts Service T eam (CAST) at Bombardier Aerospace Regional Aircraft division specifying aircraft serial number(s) to:

Bombardier Aerospace Customer Accounts Services T eam (Mail Stop N11- - -32) 123 Garratt Blvd.

To r o n t o Ontario Canada M3K- - -1Y5 Facsimile: (416) 375- - -3060 T elephone: (416) 375- - -3920 Facsimile:

International: (416) 375- - -3334 European: (416) 373- - -5966 Americas East: (416) 373- - -5964 Americas West: (416) 373- - -5965 T elephone:

S E R V I C E B U L L E T I N 8 4 --- 3 2 --- 1 1 4 S.B. 84- - -32- - -114 Page 5 of 22 06 Jun 2013 JR Revision ‘B’ 03 Feb 2015 International: (416) 375- - -3706 European: (416) 373- - -3704 Americas East: (416) 375- - -3700 Americas West: (416) 373- - -5888 E- - -mail addresses:

International: cast.international@aero.bombardier.com European: cast.europe@aero.bombardier.com Americas East: cast.americaseast@aero.bombardier.com Americas West: cast.americaswest@aero.bombardier.com Kit Number Description 8MK4615- - -001 K i t --- R e w o r k --- E l e c C o n d u i t A s s e m b l y, L / G Harness, LH Nacelle - - - See NOTE 1 8MK4615- - -002 K i t --- R e w o r k --- E l e c C o n d u i t A s s e m b l y, L / G Harness, RH Nacelle - - - See NOTE 2 8MK4615- - -003 K i t --- R e w o r k --- E l e c C o n d u i t A s s e m b l y, L / G Harness, LH Nacelle - - - See NOTE 3 8MK4615- - -004 K i t --- R e w o r k --- E l e c C o n d u i t A s s e m b l y, L / G Harness, RH Nacelle - - - See NOTE 4 8MK4615- - -005 K i t --- R e w o r k --- E l e c C o n d u i t A s s e m b l y, L / G Harness, LH Nacelle - - - See NOTE 4 8MK4615- - -006 K i t --- R e w o r k --- E l e c C o n d u i t A s s e m b l y, L / G Harness, RH Nacelle - - - See NOTE 4 8MK4615- - -007 K i t --- R e w o r k --- E l e c C o n d u i t A s s e m b l y, L / G Harness, LH Nacelle - - - See NOTE 4 8MK4615- - -009 K i t --- R e w o r k --- E l e c C o n d u i t A s s e m b l y, L / G Harness, LH Nacelle - - - See NOTE 3 8MK4615- - -051 D e l t a K i t --- S e e N O T E 5 NOTE 1: Applicable to aircraft serial numbers 4001 thru 4027.

NOTE 2: Applicable to aircraft serial numbers 4001 thru 4089.

NOTE 3: Applicable to aircraft serial numbers 4028 thru 4089.

S E R V I C E B U L L E T I N 8 4 --- 3 2 --- 1 1 4 S.B. 84- - -32- - -114 Page 6 of 22 06 Jun 2013 JR Revision ‘B’ 03 Feb 2015 NOTE 4: Applicable to aircraft serial numbers 4090 thru 4411.

NOTE 5: For any unconsumed 8MK4615- - -003/- - -004/- - -005 kits, operators only need to order delta kit 8MK4615- - -051.

H. T ooling - - - Price and Availability None I. Weight and Balance Not affected J. Electrical Load Data Not affected K. Publications Affected Dash 8 Illustrated Parts Catalogue PSM 1- - -84- - -4....................

Wiring Diagrams Manual PSM 1- - -84- - -2W............................

ModSums Manual PSM 1- - -84- - -12..................................

L. References Revision ‘B’ of this service bulletin was prepared to the engineering drawings and related data that follows:

DRAWING SHEET REV 8MK4615 1 E 8Z9552 1 E 8Z9552 2 D 8Z9552 3 C 8Z9553 1 E 8Z9553 2 D 8Z9553 3 B 8Z9553 4 B ModSum 4Q126562 Rev. ‘F’

S E R V I C E B U L L E T I N 8 4 --- 3 2 --- 1 1 4 S.B. 84- - -32- - -114 Page 7 of 22 06 Jun 2013 JR Revision ‘B’ 03 Feb 2015 ModSum 4- - -126562 Rev. ‘F’ ModSum 4Y123798 Rev. ‘B’ ModSum 4- - -123798 Rev. ‘B’ ModSum IS4Q2400028 Rev. ‘B’ ModSum IS4Q2400029 Rev. ‘A’ PCA 44059 Revision 1 (for internal reference only) Transport Canada Airworthiness Directive CF- - -2014- - -45

2. MATERIAL INFORMA TION A. Parts Required Per Aircraft

(1) Modification Kit 8MK4615- - -001, for aircraft serial numbers 4001 thru 4027.

Modification Kit 8MK4615- - -002, for aircraft serial numbers 4001 thru 4089.

(2) Detailed Kit Content:

Quantity Per Kit --- 0 0 2 --- 0 0 1 Part Number Description Remarks 2 B0816035AA3N750 Tie Mount 5 B0816019- - -001 Strap Tie Down 1 8Z9553 R e w o r k --- L d g G e a r Harness LH Nacelle Drawing Only 1 8Z9552 R e w o r k --- L d g G e a r Harness RH Nacelle Drawing Only 44 TR04AI Tinel- - -Lock Ring See NOTE 1 6f t . 6f t . MIL- - -I- - -19166 Fibreglass T ape 44 202A121- - -3/42 Boot HT Shrink See NOTE 1 11 B0204046CRA3- - -20 Clickbond Standoff See NOTE 2 1 CSP255- - -8Z9553- - -051 Label 1 CSP255- - -8Z9552- - -051 Label 11 MS21919WDE12 Clamp 6f t 6f t 3C- - -CML- - -1NSNJ- - -0006Conduit See NOTE 1 11 B0816035CR3TT Cable Tie Mount

S E R V I C E B U L L E T I N 8 4 --- 3 2 --- 1 1 4 S.B. 84- - -32- - -114 Page 8 of 22 06 Jun 2013 JR Revision ‘B’ 03 Feb 2015 Quantity Per Kit --- 0 0 2 --- 0 0 1 RemarksDescriptionPart Number 88 M39029/56- - -351 Pin, Contact 65 B0816035CR3T Cable Tie Mount See NOTE 3 6f t . 6f t . DSC230- - -7HT Spiral Wrap 1f t . 1f t . MS21266- - -2N Grommet Edging 11 MS21919WDE10 Clamp 11 NAS1801- - -3- - -10 Screw 11 NAS1801- - -3- - -16 Screw 61 B0816038- - -002 Connector Ring 13 12 B0816019- - -003 Tie Strap NOTE 1: If required. Replace the conduit assembly with these parts.

NOTE 2: Acceptable to use substitute part CB3001CRA3- - -20.

NOTE 3: Acceptable to use substitute part CB3019CR3T , CSP458- - -1 or B0816033- - -002.

S E R V I C E B U L L E T I N 8 4 --- 3 2 --- 1 1 4 S.B. 84- - -32- - -114 Page 9 of 22 06 Jun 2013 JR Revision ‘B’ 03 Feb 2015

(3) Modification Kit 8MK4615- - -003, for aircraft serial numbers 4028 thru 4089.

Modification Kit 8MK4615- - -004, for aircraft serial numbers 4090 thru 4411.

Modification Kit 8MK4615- - -005, for aircraft serial numbers 4090 thru 4411.

(4) Detailed Kit Content:

Quantity Per Kit --- 0 0 5 --- 0 0 4 --- 0 0 3 Part Number Description Remarks 11 8Z9553 R e w o r k --- L d g G e a r Harness LH Nacelle Drawing Only 1 8Z9552 R e w o r k --- L d g G e a r Harness RH Nacelle Drawing Only 444 TR04AI T i n e l --- L o c k R i n g See NOTE 1 6f t . 6f t 6f t . MIL- - -I- - -19166 Fibreglass T ape 444 202A121- - -3/42 Boot HT Shrink See NOTE 1 1 B0204046CRA3- - -20 Clickbond Standoff See NOTE 2 11 CSP255- - -8Z9553- - -051 Label 1 CSP255- - -8Z9552- - -051 Label 6f t . 6f t . 6f t . 3C- - -CML- - -1NSNJ- - -0006Conduit See NOTE 1 111 B0816035CR3TT Cable Tie Mount 888 M39029/56- - -351 Pin, Contact 41 B0816035CR3T Cable Tie Mount See NOTE 3 6f t . 6f t . 6f t . DSC230- - -7HT Spiral Wrap 1f t . 1f t . 1f t . MS21266- - -2N Grommet Edging 111 MS21919WDE10 Clamp 222 MS21919WDE7 Clamp 111 NAS1801- - -3- - -20 Screw 111 NAS43DD3- - -40FC Spacer 122 B0816038- - -002 Connector Ring 444 B0305091- - -5 Clamp 71 5 7 B0816019- - -003 Tie Strap 444 CSP458- - -1 Tie Mount NOTE 1: These parts are required if the conduit assembly is replaced.

NOTE 2: Acceptable to use substitute part CB3001CRA3- - -20.

NOTE 3: Acceptable to use substitute part CB3019CR3T , CSP458- - -1 or B0816033- - -002.

S E R V I C E B U L L E T I N 8 4 --- 3 2 --- 1 1 4 S.B. 84- - -32- - -114 Page 10 of 22 06 Jun 2013 JR Revision ‘B’ 03 Feb 2015

(5) Modification Kit 8MK4615- - -006, for aircraft serial numbers 4090 thru 4411.

Modification Kit 8MK4615- - -007, for aircraft serial numbers 4090 thru 4411.

Modification Kit 8MK4615- - -009, for aircraft serial numbers 4028 thru 4089.

(6) Detailed Kit Content:

Quantity Per Kit --- 0 0 9 --- 0 0 7 --- 0 0 6 Part Number Description Remarks 2 B0816035AA3N750 Tie Mount 5 B0816019- - -001 Strap Tie Down 111 B0305091- - -9 Clamp 333 B0305091- - -6 Clamp 11 8Z9553 R e w o r k --- L d g G e a r Harness LH Nacelle Drawing Only 1 8Z9552 R e w o r k --- L d g G e a r Harness RH Nacelle Drawing Only 444 TR04AI Tinel- - -Lock Ring See NOTE 1 6f t . 6f t 6f t . MIL- - -I- - -19166 Fibreglass T ape 444 202A121- - -3/42 Boot HT Shrink See NOTE 1 1 B0204046CRA3- - -20 Clickbond Standoff See NOTE 2 11 CSP255- - -8Z9553- - -051 Label 1 CSP255- - -8Z9552- - -051 Label 6f t . 6f t . 3C- - -CML- - -1NSNJ- - -0006Conduit See NOTE 1 111 B0816035CR3TT Cable Tie Mount 888 M39029/56- - -351 Pin, Contact 41 B0816035CR3T Cable Tie Mount See NOTE 3 6f t . DSC230- - -7HT Spiral Wrap 1f t . MS21266- - -2N Grommet Edging 111 MS21919WDE10 Clamp 222 MS21919WDE7 Clamp 111 NAS1801- - -3- - -20 Screw 111 NAS43DD3- - -40FC Spacer 212 B0816038- - -002 Connector Ring 77 1 5 B0816019- - -003 Tie Strap 444 CSP458- - -1 Tie Mount NOTE 1: These parts are required if the conduit assembly is replaced.