BOMBARDIER MODIFfCATION SUMMARY PACKAGE 

125 2 MODEL I TYPE 3 MODSUM NO. COMPLETE D 4 SHEET 

Not Applicable Q400 15402400029 1 OF 25 

5 CURRENT A 

REVISION 

6 PRIME DESIGN ACTIVITY BOMBARDIER INC. D 3AB48 7 SUPPLIER NAME AND CAGE CODE 

BOMBARDIER INC., MONTREAL D 88308 LEARJET INC. D 24210 

BOMBARDIER INC., DOWNSVIEW IX] 71867 SHORT BROTHERS PLC D K4585 

8 TITLE 10 APPROVED INITIATING DOCUMENT 

MLG Electrical Harnesses - 82440845 & 82440848 (LH Aft-Mid PCR 44059 

Nacelle) and 82440841 & 82440850 (RH Aft-Mid Nacelle) Re-Routing 

9 MAJOR ASSY OR COMPONENT AFFECTED 

82454301 Electrical Harness Installation LH Aft-Mid Nacelle BASKET MODSUM 

82454315 Electrical Harness Installation RH Aft-Mid Nacelle D SEE INDIVIDUAL AUTH DOCUMENTS 

11 DESCRIPTION OF MODIFICATION 

This Modsum re-routes Electrical Harnesses 82440845 & 82440848 (LH Aft-Mid Nacelle) and 82440841 & 

82440850 (RH Aft-Mid Nacelle) and installs grommets to prevent contact with the MLG Stabilizer Brace. 

12 REASON FOR MODIFICATION 

This Modsum provides retrofit I additional protection to prevent possible contact with the MLG Stabilizer 

Brace. 

13 ENGINEERING REMARKS 

This Modsum is for in-service aircraft only and will not be incorporated on production aircraft. 

APPROVED BY: ~~)~~ ,:3/?1//J /?IL .. e~<' I DATE;LLLJ (o 1.2 

APPROVED IN ACCORD ~ WITH TRANSPORT CANADA DAO NO. 93-Q-02 rJ14 RELATED MODSUM 16 PRODUCTION EFFECTIVITY 

IS4Q5450002, IS4Q5450003 N/A 

IS4Q2400028, 4Y123798 

15 ENGINEERING VALIDITY 17 RECOMMENDED SERVICE EFFECTIVITY 

4001-4999 

DHC-8, Series 400 

18 CLASS 19 AIRWORTHINESS CLASSIFICATION In Service Aircraft SIN's 4090- 4411 

8 LEVEL 1** D LEVEL 2* D LEVEL 3 !X] 

BT0206-{)2A ~REV 2004-10 ' 'DCCP OR 'ACRL & SOC OR FAA FORM 8110-3 REQUIRED © 2004 Bombardier Inc. 
BOMBARDIER 

MODIFICATION SUMMARY PACKAGE 

3 MODSUMNO. 4 SHEET 

AUTHORIZATION SHEET 154Q2400029 2 

5 CURRENT REVISION A 

21 ORIGINATOR ~erric~ ~~ryu.J~ 

dl~jJ)o,, 

22 DESIGN fl;or'6e Gm bas 

r'vv !AI 2G'J11J 

2.01"1.-

23 DESIGN AUTHORITY u~.~'f-.10 

itCI J d ! ,~,/M h<'o 

24 PP&C I~. Z-'IZ 07-oG 

,lf'toSJ{TA-1/JS/c; 

5 CURRENT REVISION 

21 ORIGINATOR 

22 DESIGN 

23 DESIGN AUTHORITY 

24 PP&C 

25 REVISION DESCRIPTION 

A-lnitiallssue fRAIJSI( SHt=£1/FI~'-/bo 

BT1l206.CS WI REV 2004-10 
BOMBARDIER MODIFICATION SUMMARY PACKAGE 

C MODSUM NO. D SHEET 

AIRWORTHINESS CLASSIFICATION IS4Q2400029 2.1 

H REV V AIRWORTHINESS CLASSIFICATION 

A .. LEVEL 1 - - - -· 

•LEVEL 2 - - 7 7 

LEVEL3 .7 v - .---

W DISCIPLINE CODE 1:2L ~'N.£ ~,.... ~-~/1 

X CERT AUTH m-.:rn \ ~ ~ I ma..h/. DES REP SIGNATURE 

Y CERTAUTH MAIZ!N() Uooft!VI<.. la~..rm IV 

DES REP NAME t.J/h-t-(ft· 

H REV V AIRWORTHINESS CLASSIFICATION 

.. LEVEL 1 

•LEVEL 2 

LEVEL 3 

W DISCIPLINE CODE 

X CERT AUTH 

DES REP SIGNATURE 

Y CERT AUTH 

DES REP NAME 

H REV V AIRWORTHINESS CLASSIFICATION 

.. LEVEL 1 

•LEVEL 2 

LEVEL 3 

W DISCIPLINE CODE 

X CERT AUTH 

DES REP SIGNATURE 

Y CERT AUTH 

DES REP NAME 

H REV V AIRWORTHINESS CLASSIFICATION 

.. LEVEL 1 

•LEVEL 2 

LEVEL 3 

W DISCIPLINE CODE 

X CERT AUTH 

DES REP SIGNATURE 

Y CERTAUTH 

DES REP NAME 

H REV V AIRWORTHINESS CLASSIFICATION 

.. LEVEL 1 

•LEVEL 2 

LEVEL 3 

W DISCIPLINE CODE 

X CERT AUTH 

DES REP SIGNATURE 

Y CERT AUTH 

DES REP NAME 

H REV V AIRWORTHINESS CLASSIFICATION 

.. LEVEL 1 

•LEVEL 2 

LEVEL 3 

W DISCIPLINE CODE 

X CERT AUTH 

DES REP SIGNATIIRE 

Y CERT AUTH 

DES REP NAME 

BT0206..Q7 MW REV 2004-10 AFTER TYPE APPROVAL,"*DCCP OR *ACRL & SOC OR FAA FORM 8110-3 REQUIRED 
BOMBARDIER MODIFICATION SUMMARY PACKAGE 

3 MODSUMNO. 4 SHEET 

CONTINUATION SHEET IS4Q2400029 3 

5 CURRENT A 

REVISION 

Parts Required: 

Item QTY Part No. Description 

No. 

1 AIR DSC230-7HT or Panduit T25T or AMP 500024 Spiral Wrap, Teflon (.250") 

2 AIR MS21266-2N Grommet. Edging 

3 AIR OHMS A6.09 Epoxy Adhesive or Fast Weld No. 10 Adhesive 

4 AIR OHMS A 6.12 or EC-2216 Epoxy Adhesive B/A. (3M) Adhesive 

5 AIR OHMS S3.01 /B2 or PR 1422 B1/2 Sealant 

6 AIR MIL-1-19166 Fiberglass Tape (1 to 1.5") 

7 12* B0816035CR3T (Preferred) or (Click Bond) Cable Tie Mount, Metal 

CB3019CR3T (Preferred) or Alternate 

P/N CSP458-1 or B0816033-002 

8 AIR B0816019-003 or PLT2S-76 (Panduit) Tie Wrap/Strap 

9 AIR B0816038-002 or CR4H (Panduit) Connector Ring 

10 2* NAS43DD3-40FC Spacer 

11 2* NAS1801-3-20 Screw 

12 2* MS21919WDE10 Clamp 

13 AIR CB200 or CB200-40 Acrylic Structural Adhesive Adhesive (Click Bond) 

Notes:* Minimum Qty needed, any excess may be used as spares. 

Job Set-Up: 

• Obey all the Electrical/Electronic Safety Precautions (Refer to TASK 24-00-00-910-801 ). 

• Obey all the electrostatic discharge safety precautions (Refer to TASK 24-00-00-910-802). 

• De-energize the electrical system (Refer to TASK 24-00-00-861-802). 

• Open and tag the circuit breakers for the affected circuits. 

• Open and lock the main landing gear doors (Refer to TASK 32-00-00-840-801 ). 

Warning: 

• Remove all Electrical & Hydraulic power from the aircraft before you do maintenance. 

• Jack the Aircraft lAW AMM TASK 07-10-00-582-801 . 

• Remove LH & RH MLG Stabilizer Strut lAW AMM TASK 32-11-16-000-801 . 

• Remove LH & RH MLG Forward Doors lAW AMM TASK 32-12-11-000-801 . 

References: 

• IPC Fig 24-00-03-01 -Electrical Cable Installation- Outboard, LH Mid & Aft Nacelle. 

• IPC Fig 24-00-03-10- Electrical Cable Installation - Outboard, RH Mid & Aft Nacelle. 

BT0206-05 MW REV 2004-10 
BOMBARDIER MODIFICATION SUMMARY PACKAGE 

3 MODSUM NO. 4 SHEET 

CONTINUATION SHEET IS4Q2400029 4 

5 CURRENT -A--+---~----~----4-----~---+---- ----+----4----~----+----4 REVISION 

• WDM 20-12-10-201 -Wiring- Maintenance Practices. 

• WDM 20-15-04-201 -Repair of the Metal Overbraiding Shield on Electrical Cable Harnesses Within 

Allowable Damage Tolerances. 

• WDM 20-15-10-401- Adaptors And Connectors Used To Terminate Overbraid And Individual Wire 

Shields For Emi And HIRF Protection- Removal/Installation. 

• WDM 32-61-00- Proximity Sensor System 

(LH Aft-Mid Nacelle): 

• Harness 82440845: To 3261-J21 (LH WOW-1) & 3261-J23 (LH Gear Down Lock-1) 

• Harness 82440848: To 3261-J22 (LH WOW-2) & 3261-J24 (LH Gear Down Lock-2) 

(RH Aft-Mid Nacelle): 

• Harness 82440841: To 3261-J41 (RH WOW-1) & 3261 -J43 (RH Gear Down Lock-1) 

• Harness 82440850: To 3261-J42 (RH WOW-2) & 3261-J44 (RH Gear Down Lock-2) 

Procedure: 

1. Gain access to the LH Nacelle area and clean the Electrical Conduit I Harnesses 82440845 & 

82440848 going to connector's 3261-J21 , 3261-J23, 3261-J22, and 3261-J24 with Isopropyl Alcohol. 

(Refer to TASK 20-30-26-910-801 & TASK 20-30-26-910-803- Cleaning of the Electrical Wiring). 

See Figure 1 for noted location. 

\ 

Figure 1 - LH Nacelle, Location Of The Harnesses To Be Re-Routed 

BT0206-05 MW REV 2004-10 
BOMBARDIER MODIFICATION SUMMARY PACKAGE 

3 MODSUM NO. 4 SHEET 

CONTINUATION SHEET IS4Q2400029 5 

5 CURRENT A 

REVISION 

2. Inspect the Harness Conduit for any signs of chafing or damage and if required repair lAW WDM 20-

15-04-201 . See Figure 2. If damage is found on Harness Conduit due to impact damage, inspect the 

applicable MLG Stabilizer Brace. Inspect the adjacent area around the conduits for any signs of 

structural damage due to chafing. Report any Stabilizer Brace or structural damage findings to 

Bombardier Aerospace via the THO. 

BT0206.Q5 MW REV 2004-1 0 

::::,_:: .-t:::==::t-:::/~ Adjacent Structure 

-- For Signs Of 

Chafing 

Note: 

The Routing May 

Vary Between A/C 

Figure 2 - LH Nacelle, Area Of Inspection 
BOMBARDIER MODIFICATION SUMMARY PACKAGE 

3 MODSUM NO. 4 SHEET 

CONTINUATION SHEET 15402400029 6 

5 CURRENT A 

REVISION 

3. Remove the harness support clamps mounted on the Nacelle MA" frame and pull the harness down. 

Loosen the harness support clamps along the Nacelle side panel as shown. Cut and remove any tie 

wraps, tape, or spiral wrap. Inspect the removed hardware for condition and replace as required. See 

Figure 3. 

o:, . . . 

' ' 

Loosen These Support Clamps 

I 

' ' 

I 

I 

LH Nacelle -View Looking Out Board, LH Side Panel 

Remove These Support 

Clamps & Pull Cables Down 

LH Nacelle- View FWD On Aft Face Of 'A' Frwne 

Figure 3 - LH Nacelle, Support Clamps Removal 

4. Prepare/clean the area shown in Figure 4 where the metal tie mounts (Item 7) & grommet (Item 2) 

are to be installed by cleaning with solvent (Isopropyl Alcohol) or equivalent. 

BT0206..05 MW REV 2004-10 
BOMBARDIER 

CONTINUATION SHEET 

5 CURRENT A 

REVISION 

View Looking FWD On Aft Face Of 'A' Frame, LH 

Nacelle Shown, RH Nacelle Similar, P/N 85414025 

Shown 

MODIFICATION SUMMARY PACKAGE 

3 MODSUM NO. 4 SHEET 

IS4Q2400029 7 

LH Nacelle - View looking Out Board, LH Side Panel 

Figure 4 - LH Nacelle, Tie Mount & Grommet Installation Preparation 

5. Install the Click Bond Tie Mounts (Item 7) using the dimensions & locations shown in Figures 6 & 7. 

Go to step 7 for alternate Tie Mounts (PIN CSP458-1) installation. 

6. Mark locations and prepare the area for bonding. Surface preparation: Surface preparation is an 

important part of adhesive bonding. Lightly abrade glossy surfaces to improve the adhesive bond. 

Just prior to adhesive application, clean surfaces with solvent using clean rags or paper towels. Do 

not use shop towels, rags or paper wipes contaminated with oil, soap, or reclaimed solvents. Wash 

one small area at a time, and then dry with a clean cloth before the solvent evaporates to prevent redeposition of contaminants. To maintain a clean solvent supply, always pour the solvent on the 

BT0206.05 MW REV 2004-10 
BOMBARDIER 

MODIFICATION SUMMARY PACKAGE 

3 MODSUM NO. 4 SHEET 

CONTINUATION SHEET IS4Q2400029 8 

5 CURRENT A 

REVISION 

washing cloth. Click Bond C8200 Notes: Mix Ratio (B: A): 8:1 (volume), 7:1 (weight), Working time 

at 75°F: 5 minutes (small quantities). Cure time at 75°F: 30 minutes - handling strength. 2 hours90% of ultimate strength. 24 hours - full cure. Mixing & Applying CB200 or C8200-40 Adhesive: 

Dispense 8 parts of component B and one part of component A (by volume). Mix until a uniform color 

is obtained (or use a disposable mixing nozzle). Apply to one of the surfaces to be bonded. To assure 

maximum bond strength, surfaces must be mated within 2 minutes. Use sufficient material to insure 

100% joint fill when parts are mated. All adhesive application, part positioning, and clamping should 

occur before the 5 min. working time of the mix has expired. Movement of the parts after working time 

has expired can result in bond strengths lower than normal. Insure that the assembly remains 

undisturbed for 30 minutes to allow adhesive cure to progress to the handling strength stage where 

the fixtures or clamps may be removed. 

Possible Adhesive (Item 13) 

CB200 - 3.5 Gram Foil Pack, 

Enough Adhesive For 4-5 

Click Bond Bases 

2 - Locate fixture on substrate 

using a template or by aligning 

index marks with drawn 

centerline. Press down on outer 

box to adhere foam tape to 

substrate. 

CB200-40 - 40 ml Dual Pack 

Syringe Cartridge, Used With 

CB100, CB81 & CB106 

3 - Apply pressure to inner box to 

actuate fixture. Plastic springs 

extrude adhesive bond line and 

apply positive pressure during 

adhesive cure. 

1- Remove the backing from foam 

pads on fixture and discard. 

Apply adhesive to fastener base. 

4 - After adhesive has cured, 

remove fixture by grasping with 

pliers & discard. 

Figure 5- Click Bond •Tie Mount• Installation Procedure 

BT0206.05 MW REV 2004-10 

I 
BOMBARDIER 

CONTINUATION SHEET 

5 CURRENT 

REVISION 

A 

14.5 9.5" 8.5" 

JQitD 

taD 

181 

MODIFICATION SUMMARY PACKAGE 

3 MODSUM NO. 

IS4Q2400029 

Install Tie Mounts (Item 7) (Qty 3), 

To The Noted Dimensions & Orientation 

Dimension Tolerances: (+/- .030") 

4 SHEET 

9 

LH Nacelle -View Looking Out Board, LH Side Panel 

Figure 6 - LH Nacelle, Tie Mount Installation 

BT0206-05 MW REV 2004-10 
BOMBARDIER 

CONTINUATION SHEET 

5 CURRENT A 

REVISION 

0 

2.-

,..:: Keep Cables Below This 

Reference Line, Aligned 

With Machined Flange 

MODIFICATION SUMMARY PACKAGE 

3 MODSUM NO. 4 SHEET 

15402400029 

Remove Any Existing Tie 

Mounts That Don't Meet 

The Noted Dimensions & 

Orientation As Shown 

Install Tie Mounts (Item 7) (Qty 3), 

To The Noted Dimensions & Orientation 

Dimension Tolerances: (+/· .030" ) 

10 

View Looking FWD On Aft Face Of •A' Frwne, LH NIICelle Shown, RH NIICelle Slmll• 

Figure 7 - LH Nacelle, Tie Mount Installation 

BT0206-05 MW REV 2004-10 
BOMBARDIER 

CONTINUATION SHEET 

5 CURRENT 

REVISION 

A 

MODIFICATION SUMMARY PACKAGE 

3 MODSUM NO. 4 SHEET 

15402400029 11 

7. As a alternate to the Click Bond Tie Mounts (P/N B0816035CR3T), it is acceptable to install tie mount 

(PIN CSP458-1) using the dimensions & locations shown in Figures 6 & 7 with Fast-Weld #1 0 Epoxy 

Adhesive lAW SRM TASK 51-22-35-02-01 or with EC- 2216 8/A Grey Adhesive lAW SRM TASK 51-

22-20-02-01 . Lightly abrade and then clean the contact area of both the tie mount & structure surface 

before applying adhesive as detailed in Step 6. After cure, seal the edges of the tie mount bases with 

PR 1422 B1/21AW SRM TASK 51-23-00-00-01. 

8. Install the grommet (Item 2) in the location shown in Figure 7 with Fast Weld No. 10 (Refer to 

SRM51-22-35) or with OHMS A6.09 epoxy adhesive (Refer to SRM51-22-45). 

9. Re-route 82440845 & 82440848 cable harnesses as shown in Figures 9 & 10 using the 6 new tie 

wrap mounts. 

BT0206-{)5 MW REV 2004--10 

Cables Are Moved Below 

This Reference Line, 

Aligned With Machined 

Flange 

Remove Any Existing Tie Mounts 

That Don't MHt The Noted 

Dimensions & Orientation As 

Shown In Figure 7 

Note: 

The Routing May 

Vary Between AJC 

Figure 8 - LH Nacelle, Pre-154Q2400029 Mod Image 
BOMBARDIER 

CONTINUATION SHEET 

5 CURRENT 

REVISION 

A 

MODIFICATION SUMMARY PACKAGE 

3 MODSUM NO. 4 SHEET 

15402400029 12 

Carefully ne Wrap Cables with 

(Item 8) To The Tie Mounts (Item 7), 

3 Locations. 

Don't Tighten Tie Wr.ps Too Much 

As This Can Crush The Inner 

Conduit. 

Keep Cables Below This 

Reference Line, Aligned 

With Machined Flange 

Secure Cables 

Here To New Tie 

Mount With Item 8 

(Tie Wrap), 3 

Locations 

Cover Adjacent 

Wiring With 

Spiral Wrap If 

Required. 

Install Clamp (Item 12) 

On Transition, 

Reposition Existing 

Clamps As Shown, With 

Spacer (Item 10) & 

Screw (Item 11) 

Existing 

Clamp P/N 

DSC184-9 

(Ref) 

Figure 9- LH Nacelle, Harness Cable Re-Routing 

T0206~5 MW REV 2004-10 
BOMBARDIER 

MODIFICATION SUMMARY PACKAGE 

3 MODSUM NO. 4 SHEET 

CONTINUATION SHEET 15402400029 13 

5 CURRENT A 

REVISION t----+----t----+----1---+----+----+-----+---+----+----+---~ 

Re-Route & Secure The Cables As Shown 

Adjust Backshell 

Clamp Angle FWD 

As Required To 

Provide Clearance 

3261 -.J23 

Adjust Cable Routing With 

Additional CR4't (Item 9) & 

Tie Wraps (Item 8) If 

Required To Maintain 

Clearances 

Cover Cables With 

Item 6 (Fiberglass 

Tape) & Item 8 (Tie 

Wrap) As Required 

Re-lock Connector 

Back Shells After 

Adjusting Angle, 

Shown Unlocked 

Figure 10 - LH Nacelle, Harness Cable Re-Routing 

10. If required, cover wires & cables with spiral wrap for additional protection lAW WDM 20-12-10-201 -

Wiring - Maintenance Practices. 

11 . Re-tighten any support clamps that were moved or loosened. Add fiberglass tape and tie wraps 

where required to provide clearance and security. Ensure tore-lock any connector back shells that 

may have been adjusted. 

12. Remove all tools. equipment and unwanted materials from the LH Nacelle work area. 

BT0206.05 MW REV 2004-10 
BOMBARDIER 

MODIFICATION SUMMARY PACKAGE 

3 MODSUMNO. 4 SHEET 

CONTINUATION SHEET 15402400029 14 

SCURRENT REVISION r--A--+-----~--~-----r----,_----+-----~--~-----r----,_----+----­

13. Gain access to the RH Nacelle area and clean the Electrical Conduit I Harnesses 82440841 & 

82440850 going to connector's 3261-J41, 3261-J43, 3261-J42, and 3261-J44 with Isopropyl Alcohol. 

(Refer to TASK 20-30-26-910-801 & TASK 20-30-26-910-803- Cleaning of the Electrical Wiring). 

See Figure 11 for noted location. 

Figure 11 - RH Nacelle, Location Of The Harnesses To Be Re-Routed 

14. Inspect the Harness Conduit for any signs of chafing or damage and if required repair lAW WDM 20-

15-04-201 . See Figure 12. If damage is found on Harness Conduit due to impact damage, inspect 

the applicable MLG Stabilizer Brace. Inspect the adjacent area around the conduits for any signs of 

structural damage due to chafing. Report any Stabilizer Brace or structural damage findings to 

Bombardier Aerospace via the THO. 

BT0206.05 MW REV 2004-10 
BOMBARDIER 

CONTINUATION SHEET 

5 CURRENT 

REVISION 

A 

BT0206-05 MW REV 2004-10 

MODIFICATION SUMMARY PACKAGE 

3 MODSUM NO. 

IS4Q2400029 

Inspect These 

Cables & Adjacent 

Structure For 

Possible Signs Of 

Chafing 

Note: 

The Routing May Vary 

Between AJC 

Figure 12 - RH Nacelle, Area Of Inspection 

4 SHEET 

15 
BOMBARDIER 

MODIFICATION SUMMARY PACKAGE 

3 MODSUM NO. 4 SHEET 

CONTINUATION SHEET 15402400029 16 

5 CURRENT A 

REVISION 

15. Remove the harness support clamps mounted on the Nacelle "A" frame and pull the harness down. 

Loosen the harness support clamps along the Nacelle side panel as shown. Cut and remove any tie 

wraps, tape, or spiral wrap. Inspect removed hardware for condition and replace as required. See 

Figure 13. 

i 

i I 

I I 

i 

i 

I 

. 

I 

Remove These Support 

Clamps & Pull Cables Down 

I RH Nacelle- View FWD On Aft Face Of 'A' Frwne 

Figure 13- RH Nacelle, Support Clamps Removal 

16. Prepare/clean the area shown in Figure 14 where the metal tie mounts (Item 7) & grommet (Item 2) 

are to be installed by cleaning with solvent (Isopropyl Alcohol) or equivalent. 

BT0206.()5 MW REV 2004-10 
BOMBARDIER 

MODIFICATION SUMMARY PACKAGE 

3 MODSUM NO. 4 SHEET 

CONTINUATION SHEET JS4Q2400029 17 

SCU REVISIORRENN T r--A--~----~----~----~----~-----r-----r-----r-----r-----r-----r----­

View Looking FWD On Aft Face Of 'A' Frame, RH 

Nacelle Shown, LH Nacelle Similar, P/N 85414025 

Shown 

Figure 14- RH Nacelle, Tie Mount & Grommet Installation Preparation 

17. Install the Click Bond Tie Mounts (Item 7) using the dimensions & locations shown in Figures 16 & 

17. Go to step 19 for alternate Tie Mounts (PIN CSP458-1) installation. 

18. Mark locations and prepare the area for bonding. Surface preparation: Surface preparation is an 

important part of adhesive bonding. Lightly abrade glossy surfaces to improve the adhesive bond. 

Just prior to adhesive application, clean surfaces with solvent using clean rags or paper towels. Do 

not use shop towels, rags or paper wipes contaminated with oil, soap, or reclaimed solvents. Wash 

one small area at a time, and then dry with a clean cloth before the solvent evaporates to prevent redeposition of contaminants. To maintain a clean solvent supply, always pour the solvent on the 

BT0206-05 MW REV 2004-10 
BOMBARDIER 

MODIFICATION SUMMARY PACKAGE 

3 MODSUMNO. 4 SHEET 

CONTINUATION SHEET 15402400029 18 

5 CURRENT A 

REVISION 

washing cloth. Click Bond CB200 Notes: Mix Ratio (8: A): 8:1 (volume), 7:1 (weight), Working time 

at 75°F: 5 minutes (small quantities). Cure time at 75°F: 30 minutes- handling strength. 2 hours90% of ultimate strength. 24 hours - full cure. Mixing & Applying CB200 or CB200-40 Adhesive: 

Dispense 8 parts of component 8 and one part of component A (by volume). Mix until a uniform color 

is obtained (or use a disposable mixing nozzle). Apply to one of the surfaces to be bonded. To assure 

maximum bond strength, surfaces must be mated within 2 minutes. Use sufficient material to insure 

100% joint fill when parts are mated. All adhesive application, part positioning, and clamping should 

occur before the 5 min. working time of the mix has expired. Movement of the parts after working time 

has expired can result in bond strengths lower than normal. Insure that the assembly remains 

undisturbed for 30 minutes to allow adhesive cure to progress to the handling strength stage where 

the fixtures or clamps may be removed. 

Possible Adhesive (Item 13) 

CB200 - 3.5 Gram Foil Pack, 

Enough Adhesive For 4-5 

Click Bond Bases 

2 - Locate fixture on substrate 

using a template or by aligning 

index marks with drawn 

centerline. Press down on outer 

box to adhere foam tape to 

substrate. 

CB200-40 - 40 ml Dual Pack 

Syringe Cartridge, Used With 

CB100, CB81 & CB106 

3 - Apply pressure to inner box to 

actuate fixture. Plastic springs 

extrude adhesive bond line and 

apply positive pressure during 

adhesive cure. 

1- Remove the backing from foam 

pads on fixture and discard. 

Apply adhesive to fastener base. 

4 - After adhesive has cured, 

remove fixture by grasping with 

pliers & discard. 

Figure 15 - Click Bond 'Tie Mount' Installation Procedure 

BT0206.()5 MW REV 2004-10 
BOMBARDIER 

CONTINUATION SHEET 

5 CURRENT 

REVISION 

• 

A 

• • 

11.5" lB' 

"' 

RH Nacelle- View Looking INBD, LH Side Panel 

MODIFICATION SUMMARY PACKAGE 

3 MODSUM NO. 

15402400029 

Install Tie Mounts (Item 7) (Qty 3), 

To The Noted Dimensions & Orientation 

Dimension Tolerances: (+/- .030") 

4 SHEET 

19 

Figure 16 - RH Nacelle, Tie Mount Installation 

BT0206~5 MW REV 2004-10 
BOMBARDIER 

CONTINUATION SHEET 

5 CURRENT A 

REVISION 

Keep Cables Below This 

Reference Line, Al igned 

With Machined Flange 

MODIFICATION SUMMARY PACKAGE 

3 MODSUM NO. 4 SHEET 

(854l4787) 

IS4Q2400029 

Remove Any Existing Tie 

Mounts That Don't MMt 

The Noted Dimensions & 

Orientation As Shown 

Install Tie Mounts (Item 7) (Qty 3), To The Noted Dimensions & Orientation 

Dimension Tolerances: (+/- .030" ) 

20 

View looking FWD On Aft Face Of 'A' Frame, RH Nacelle Shown, LH Nacelle Similar 

Figure 17 - RH Nacelle, Tie Mount Installation 

BT0206.{)5 MW REV 2004-10 
BOMBARDIER 

CONTINUATION SHEET 

5 CURRENT 

REVISION 

A 

MODIFICATION SUMMARY PACKAGE 

3 MODSUM NO. 4 SHEET 

IS4Q2400029 21 

19. As a alternate to the Click Bond Tie Mounts (P/N B0816035CR3T), it is acceptable to install tie mount 

(P/N CSP458-1) using the dimensions & locations shown in Figures 16 & 17 with Fast-Weld #10 

Epoxy Adhesive lAW SRM TASK 51 -22-35-02-01 or with EC- 2216 8/A Grey Adhesive lAW SRM 

TASK 51-22-20-02-01 . Lightly abrade and then clean the contact area of both the tie mount & 

structure surface before applying adhesive as detailed in Step 18. After cure, seal the edges of the tie 

mount bases with PR 1422 81/2 lAW SRM TASK 51 -23-00-00-01. 

20. Install the MS21266-2N grommet in the location shown in Figure 17 with Fast Weld No. 10 (Refer to 

SRM51-22-35) or with OHMS A6.09 epoxy adhesive (Refer to SRM51-22-45). 

21 . Re-route 82440841 & 82440850 cables harnesses as shown in Figures 19 & 20 using the 6 new tie 

wrap mounts. 

BT0206.05 MW REV 2004-10 

Cables Are Moved Below 

This Reference Line, 

Aligned With Machined 

Flange 

Figure 18 - RH Nacelle, Pre-154Q2400029 Mod Image 
BOMBARDIER 

MODIFICATION SUMMARY PACKAGE 

3 MODSUMNO. 4 SHEET 

CONTINUATION SHEET 154Q2400029 22 

RE5 CUVISIRREON NT r--A---1------+------r-----1------+------r----~r-----1------+------r-----1-----­

Re-Route & Secure The Cables As Shown Carefully Tie Wrap Cables with 

(Item 8) To The Tie Mounts (Item 7), 

3 Locations. 

Adjust Any Excessive Cable 

Length To Side Wall As Shown 

With Item 8 (Tie Wraps) 

Secure Cables 

Here To New Tie 

Mount With Item 8 

(Tie Wrap), 3 

Locations 

Don't Tighten Tie W,..,a Too Much 

As This Can Crush The Inner 

Conduit. 

Cover Adjacent 

Wiring With 

Spiral Wrap If 

Required. 

Install Clamp (Item 12) 

On Transition, 

Reposition Existing 

Clamps As Shown, With 

Spacer (Item 10) & 

Screw (Item 11 

Existing 

Clamp P/N 

DSC184-9 

(Ref) 

Cover Hydraulic 

Lines With Protective 

(Spiral Wrap, Item 1) 

If Required 

Ex isting 

Clamp P/N 

DSC184-6 

(Ref) 

Figure 19 - RH Nacelle, Harness Cable Re-Routing 

BT0206-05 MW REV 2004-1 0 
BOMBARDIER MODIFICATION SUMMARY PACKAGE 

CONTINUATION SHEET 

5 CURRENT A 

REVISION 

Re-Route & Secure The Cables As Shown 

Adjust Backshell 

Clamp Angle FWD 

As Required To 

Provide Clearance 

326 I -J43 

3261-J41 

3 MODSUM NO. 

15402400029 

Adjust Cable Routing With 

Additional CR4's (Item 9) & " 

Tie Wraps (Item 8) If iiiiiiiiiiiiiiiii=:;;::;;;~...--, 

Required To Maintain 

Clearances 

Figure 20 - RH Nacelle, Harness Cable Re-Routing 

4 SHEET 

23 

22. If required, cover wires & cables with spiral wrap for additional protection lAW WDM 20-12-10-201 -

Wiring - Maintenance Practices. 

23. Re-tighten any support clamps that were moved or loosened. Add fiberglass tape and tie wraps 

where required to provide clearance and security. Ensure to re-lock any connector back shells that 

may have been adjusted. 

24. Remove all tools, equipment and unwanted materials from the RH Nacelle work area. 

25. Re-install the LH & RH MLG Stabilizer Strut lAW AMM 32-11-16-400-801 . 

26. With LH & RH MLG Forward Doors still removed from A/C, carry out Operational Test of the Landing 

Gear Primary Extension and Retraction System lAW AMM TASK 32-31-00-710-801 . 

27. Swing the landing gear up and leave in the up and locked position. 

BT0206-05 MW REV 2004-10 

, 
BOMBARDIER MODIFICATION SUMMARY PACKAGE 

3 MODSUM NO. 4 SHEET 

CONTINUATION SHEET 15402400029 24 

5 CURRENT A 

REVISION 

28. Inspect the re-worked area in the LH & RH Nacelle and carry out a clearance check between the 

MLG Stabilizer Brace and the electrical cables. See Figure 21 for reference. Ensure there is 0.1 00" 

minimum clearance between the MLG Stabilizer Brace and the electrical cables. 

... 

Figure 21 - LH & RH Nacelle, Clearance Checks 

BT0206.()5 MW REV 2004-10 
BOMBARDIER 

MODIFICATION SUMMARY PACKAGE 

3 MODSUM NO. 4 SHEET 

CONTINUATION SHEET IS4Q2400029 25 

RESCURRENT VISION ~---+-----~--~-----r----,_----+-----r---~-----r----,_----+---~ 

29. After completion of the clearance checks, swing the gear down to the down & locked position. 

30. Re-install the MLG Forward Doors lAW AMM TASK 32-12-11-400-801 and Rig the doors lAW AMM 

TASK 32-12-11-830-801 . 

31 . Lower the aircraft on jacks lAW TASK 07- 10- 00- 582-801, Subtask 07-10-00-582-021 , Section B. 

32. Remove all tools, equipment (Tail stands and Trestles) and unwanted materials from the work area. 

General Notes: 

1. All work must be accomplished and signed off by qualified personnel as required by local 

regulatory authorities. 

2. This rework is limited to the components as specified in IS4Q2400029. 

3. Weight and Balance - No Change. 

4. Electrical Load Analysis-No Change 

BT0206-05 MW REV 2004-10