SB 670BA-32-043

Page 1 of 1

Nov 13/2014

SERVICE BULLETIN

REVISION TRANSMITTAL SHEET

SERVICE BULLETIN 670BA---32---043

SUBJECT: Landing Gear --- Main Landing Gear Door and Mechanism System ---

Replacement of the Inboard Main Landing Gear (MLG) Doors

This Page transmit:

Revision A of Service Bulletin 670BA-32-043, dated Nov 13/2014

The changes in this revision have no effect on aircraft that have had

this service bulletin incorporated.

Reason:

Revised Planning Information, paragraph 1., to:

Add a note in the Compliance section.

Add some references.

Revised Accomplishment Instructions, paragraph 2., to:

Add new steps in the Procedures

This revision also includes small editorial changes that do not have an effect on the technical

content.

Instructions:

Discard the copy of Service Bulletin 670BA---32---043, dated July 02/2014. Replace with

the copy attached.

Service Bulletin History:

Initial issue, dated July 02/2014

1
SB 670BA---32---043

Page 1 of 15

July 02/2014

Revision A, Nov 13/2014

SERVICE BULLETIN

Technical

Publications

THIS SERVICE BULLETIN IS SENT TO EACH OPERATOR. IF THE OPERATOR HAS LEASED AIRCRAFT,

TRANSFERRED SPARES IN THE LAST SIX MONTHS, SEND THIS SERVICE BULLETIN TO THE NEW

OWNER, UNLESS CONFIRMATION WAS RECEIVED THAT BOMBARDIER HAS INCLUDED THE NEW

OPERATOR ON THE DISTRIBUTION LIST.

SEND THIS SERVICE BULLETIN TO THE LESSEE. IF THE OPERATOR HAS SOLD AIRCRAFT OR

ATA SYSTEM: 32---12 NUMBER: 670BA---32---043

SUBJECT: Landing Gear --- Main Landing Gear Door and Mechanism System ---

Replacement of the Inboard Main Landing Gear (MLG) Doors

1. PLANNING INFORMATION

A. Effectivity

(1) Aircraft with the components that follow installed:

PART NUMBER:

CC670-10520-3, CC670-10520-4,

CC670-10520-951, CC670-10520-952,

CC670-10520-2003, CC670-10520-2004,

CC670-10520-2005, CC670-10520-2006,

CC670-10520-2013, CC670-10520-2014,

CC670-10520-2015, CC670-10520-2016,

KBA670-10500-27, KBA670-10500-28,

KBA670-10500-29, KBA670-10500-30,

KBA670-10500-35, KBA670-10500-36,

KBA670-10500-37, KBA670-10500-38,

KCC670-10900-3, KCC670-10900-4,

KCC670-10900-5, KCC670-10900-6

PART SERIAL

NUMBER:

All
SERVICE BULLETIN 670BA---32---043

SB 670BA---32---043

Page 2 of 15

July 02/2014

Revision A, Nov 13/2014

ON CL-600-2C10

AIRCRAFT THAT

HAVE HAD SB

670BA-32-017

AND/OR SB

670BA-32-040

INCORPORATED

OR INSTALLED AT

THE TIME OF

DELIVERY ON

CL-600-2C10 WITH

SERIAL NUMBERS:

10002 thru 10111 [1]

SPARES:

Examine all spare parts. If a part with a part

number listed above is found, it is necessary

to incorporate this service bulletin.

ALL CL-600-2C10

AIRCRAFT

If parts with the part numbers listed above

are installed on aircraft, but were not

identified at the time of delivery, on the same

aircraft model, it is necessary to incorporate

this service bulletin.

PRODUCTION: [1] There is no production effectivity.

NOTE: The instructions in this service bulletin are only applicable to the

systems and parts installed at the time of delivery of the aircraft or as

changed by Bombardier service bulletins. Before you do this service

bulletin, examine all Supplemental Type Certificates (STCs) and

Supplemental Type Approvals (STAs) or equivalent action changes

to make sure you can complete this service bulletin.
SERVICE BULLETIN 670BA---32---043

SB 670BA---32---043

Page 3 of 15

July 02/2014

Revision A, Nov 13/2014

B. Reason

(1) Condition

It is possible for the forward member of the inboard MLG door to have cracks.

This can cause the inboard MLG door(s) to break and disconnect from the

aircraft.

(2) Evidence

Twelve inboard MLG door forward-members were found cracked on in-service

aircraft.

(3) Objective/Benefit

This service bulletin gives the procedure to replace the left and/or the right

inboard MLG doors with new inboard MLG doors.

Replacement of the MLG door(s) will prevent them to break and disconnect

from the aircraft.

C. Description

Circuit breakers are opened. The landing gear lockpins are installed. The aircraft is

put on jacks. The inboard MLG door(s) is/are removed and discarded.

In Service (IS) Modification Summary IS670528200033 is done.

The inboard MLG door(s) is/are installed. The lockpins are removed from the

MLGs. The clearance check of the inboard MLG door(s) is done.The circuit

breakers are closed. The lockpins are installed in the MLGs. The aircraft is lowered.

D. Compliance

Recommended service bulletin.

Bombardier recommends that this service bulletin be done at no more than 6600

flight hours or three years, whichever comes first, from the release date of this

service bulletin, unless otherwise directed by the airworthiness authority of the

operator.

NOTE: It is not necessary to do Service Bulletin 670BA-32-042, when this service

bulletin is done.

NOTE: If it is not possible to complete all the instructions in this service bulletin

because of the configuration of the aircraft, speak with a representative

of Bombardier Customer Response Centre at phone number

514---855---8500 or send an e-mail at thd.crj@bombardier.com for

analysis and to get an approved disposition to complete this service

bulletin.

This service bulletin does not affect Airworthiness Limitations (AWLs) or Damage

Tolerance Inspections (DTIs).
SERVICE BULLETIN 670BA---32---043

SB 670BA---32---043

Page 4 of 15

July 02/2014

Revision A, Nov 13/2014

E. Approval

The technical content of this service bulletin has been approved under the authority

of the TCCA Design Approval Organization No: DAO #93---Q---02.

F. Manpower

The man-hours given below are estimates for direct labor done by an experienced

crew on an aircraft prepared for maintenance.

These estimates do not include the time necessary for:

---Administrative functions such as planning, liaising, familiarization, and report writing.

---Non-productive elapsed time such as rest time, having meals, and crew shift

changes.

---Elapsed time such as for paint to dry, sealant to cure, and fuel tank venting.

---Preparation for modification (unless specified in the Accomplishment

Instructions) such as cleaning and getting parts, tools, consumables, and

ground equipment.

---Quality assurance inspections, troubleshooting and/or correction of

discrepancies found when a task is done.

---All other activities that are not considered by Bombardier as directly related to the

accomplishment of this procedure.

NOTE: For on-site labor assistance, please speak with a Fleet Services

representative for a quote. Contact the Fleet Services Team

through the CRC at 514-855-8500 or e-mail at

thd.crj@aero.bombardier.com.
SERVICE BULLETIN 670BA---32---043

SB 670BA---32---043

Page 5 of 15

July 02/2014

Revision A, Nov 13/2014

For all Aircraft

It will take an estimated 14.0 man-hours to complete this service bulletin. The

man-hours are divided in the table that follows:

TASK MAN-HOURS

(1) Job Set-Up 2.0

(2) Procedure 4.0

(3) Test 6.0

(4) Job Close-Out 2.0

NOTE: The man-hours for the procedure do not include the hours to do

IS Modification Summary IS670528200033

G. Material --- Price and Availability

(1) The kits in the tables that follow are available from Bombardier Commercial

Aircraft. Refer to the paragraphs below for the terms and conditions.

NOTE: For a list of kit contents, refer to paragraph 3.A.

For the Left Inboard MLG Door

PART NUMBER NAME QTY

670BA32043K1 Left Inboard MLG Door 1

For the Right Inboard MLG Door

PART NUMBER NAME QTY

670BA32043K2 Right Inboard MLG Door 1
SERVICE BULLETIN 670BA---32---043

SB 670BA---32---043

Page 6 of 15

July 02/2014

Revision A, Nov 13/2014

For All Aircraft

(2) Please send a purchase order to the address below to schedule part delivery:

Bombardier

Service Bulletin Kit Support Team

123 Garratt Blvd, N42---24

Toronto, Ontario

Canada M3K 1Y5

Fax: 416-375-3060

Phone: 416-375-3920

e-mail: sbkits@aero.bombardier.com

Please contact the Service Bulletin Kit Support Team at the address above for

terms and conditions.

(3) Refer to paragraph 3.B. for a list of consumables for this service bulletin.

H. Tooling --- Price and Availability

There are no tool kits for this service bulletin. Refer to paragraph 3.C. for a list of

special tools and equipment for this service bulletin.

I. Weight and Balance

Not changed.

J. Electrical Load Data

Not changed.

K. References

Refer to the SB Introduction document for definition or explanation of service

bulletin content.

Restriction and/or Special Instruction (RSI) C-32-1580-00 Revision C

In Service Modification Summary IS670528200033

Aircraft Maintenance Manual (AMM)

For Bombardier reference only: PCA 75576

L. Other Publications Affected

Aircraft Illustrated Parts Catalogue (AIPC)

Aircraft Maintenance Manual (AMM)
SERVICE BULLETIN 670BA---32---043

SB 670BA---32---043

Page 7 of 15

July 02/2014

Revision A, Nov 13/2014

M. Relationship Chart

PRE-SB PART

NUMBER NAME POST-SB

PART NUMBER NAME

CC670-10520-3

CC670-10520-4

CC670-10520-951

CC670-10520-952

CC670-10520-2003

CC670-10520-2004

CC670-10520-2005

CC670-10520-2006

CC670-10520-2013

CC670-10520-2014

CC670-10520-2015

CC670-10520-2016

KBA670-10500-27

KBA670-10500-28

KBA670-10500-29

KBA670-10500-30

KBA670-10500-35

KBA670-10500-36

KBA670-10500-37

KBA670-10500-38

KCC670-10900-3

KCC670-10900-4

KCC670-10900-5

KCC670-10900-6

Inboard MLG

Door Assembly

CC670-10520-15

CC670-10520-16

CC670-10520-2011

CC670-10520-2012

CC670-10520-967

CC670-10520-968

KCC670-10900-1

KCC670-10900-2

KCC670-10901-1

KCC670-10901-2

KCC670-10901-3

KCC670-10901-4

CC670-10520-13

CC670-10520-14

KBA670-10500-23

KBA670-10500-24

KBA670-10500-25

KBA670-10500-26

KBA670-10500-31

KBA670-10500-32

KBA670-10500-33

KBA670-10500-34

KBA670-10500-51

KBA670-10500-52

KBA670-10500-53

KBA670-10500-54

CC670-10520N1101

CC670-10520N1102

Inboard MLG

Door Assembly
SERVICE BULLETIN 670BA---32---043

SB 670BA---32---043

Page 8 of 15

July 02/2014

Revision A, Nov 13/2014

2. ACCOMPLISHMENT INSTRUCTIONS

Reference Information

REFERENCE DESIGNATION

AMM 07-11-01-582-801 Jacking of the Aircraft

AMM 07-11-01-586-801 Lowering of the Aircraft

AMM 10-11-00-400-801 Installation of the Nose Landing Gear (NLG)

Lockpin

AMM 10-11-00-400-802 Installation of the Main Landing Gear

(MLG) Lockpins

AMM 12-00-00-867-801 Standard Aircraft Configuration for Maintenance

AMM 32-12-01-000-802 Removal of the Inboard MLG Doors

AMM 32-12-01-400-802 Installation of the Inboard MLG Doors

SRM 51-26-00-001-001 Cleaning

A. Job Set-Up

(1) Make sure that the aircraft is in standard configuration for maintenance

(refer to AMM 12-00-00-867-801).

(2) Make sure that the lockpin is installed on the nose landing gear

(refer to AMM 10-11-00-400-801).

(3) Make sure that the lockpins are installed on the main landing gear

(refer to AMM 10-11-00-400-802).

(4) Put the aircraft on jacks (refer to AMM 07-11-01-582-801).

B. Procedure

Refer to Figure 1.

(1) Do the removal and the installation of the inboard MLG door as follows:

(a) Remove and discard the inboard MLG door(s) (1) (refer to AMM

32-12-01-00-802).
SERVICE BULLETIN 670BA---32---043

SB 670BA---32---043

Page 9 of 15

July 02/2014

Revision A, Nov 13/2014

For aircraft pre-SB 670BA-32-040

For aircraft pre-IS Modification Summary IS670528200033.

(2) Do IS Modification Summary IS670528200033.

NOTE: During the incorporation of the IS Modification Summary

IS670528200033, it is not necessary to remove the outboard MLG door.

For all aircraft

(3) Install the inboard MLG door(s) (2) (refer to AMM 32-12-01-400-802).

(4) If it is not possible to complete all the instructions in this service bulletin

because of the configuration of the aircraft, speak with a representative of

Bombardier Customer Response Centre at phone number 514---855---8500 or

send an e-mail at thd.crj@bombardier.com for analysis and to get an

approved disposition to complete this service bulletin.

For aircraft post-SB 670BA-32-040

For aircraft pre-IS Modification Summary IS670528200033.

(5) Do IS Modification Summary IS670528200033.

NOTE: During the incorporation of the IS Modification Summary

IS670528200033, it is not necessary to remove the outboard MLG door.

For all aircraft

(6) Install the inboard MLG door(s) (3) (refer to AMM 32-12-01-400-802).

(7) If it is not possible to complete all the instructions in this service bulletin

because of the configuration of the aircraft, speak with a representative of

Bombardier Customer Response Centre at phone number 514---855---8500 or

send an e-mail at thd.crj@bombardier.com for analysis and to get an

approved disposition to complete this service bulletin.

C. Job Close-Out

(1) Remove all tools, equipment, and unwanted materials from the work area.

(2) Remove the aircraft from jacks (refer to AMM 07-11-01-586-801).

(3) When this service bulletin is completed, make this entry in the applicable

logbooks: “Service Bulletin 670BA-32-043, Revision A, Landing Gear --- Main

Landing Gear Door and Mechanism System --- Replacement of the Inboard

Main Landing Gear (MLG) Doors, incorporated.”
SERVICE BULLETIN 670BA---32---043

SB 670BA---32---043

Page 10 of 15

July 02/2014

Revision A, Nov 13/2014

Removal of the Inboard MLG Doors

Figure 1 (Sheet 1 of 3)

ba8158a01.cgm, yl/kl, July 24, 2014

B

A

A

B

1

PRE--MOD

NOTES

1. Left side shown,

right side opposite.

LEGEND

1. Inboard MLG door

CC670--10520--3 (LH)

CC670--10520--4 (RH)

CC670--10520--951 (LH)

CC670--10520--952 (RH)

CC670--10520--2003 (LH)

CC670--10520--2004 (RH)

CC670--10520--2005 (LH)

CC670--10520--2006 (RH)

CC670--10520--2013 (LH)

CC670--10520--2014 (RH)

CC670--10520--2015 (LH)

CC670--10520--2016 (RH)

KBA670--10500--27 (LH)

KBA670--10500--28 (RH)

KBA670--10500--29 (LH)

KBA670--10500--30 (RH)

KBA670--10500--35 (LH)

KBA670--10500--36 (RH)

KBA670--10500--37 (LH)

KBA670--10500--38 (RH)

KCC670--10900--3 (LH)

KCC670--10900--4 (RH)

KCC670--10900--5 (LH)

KCC670--10900--6 (RH).
SERVICE BULLETIN 670BA---32---043

SB 670BA---32---043

Page 11 of 15

July 02/2014

Revision A, Nov 13/2014

Installation of the Inboard MLG Doors

Figure 1 (Sheet 2 of 3)

ba8158a02.cgm, YL, February 13, 2014

B

A

A

B

2

LEGEND

2. Inboard MLG door

CC670--10520--13 (LH)

CC670--10520--14 (RH)

CC670--10520--967 (LH)

CC670--10520--968 (RH)

CC670--10520--2011 (LH)

CC670--10520--2012 (RH)

KCC670--10901--1 (LH)

KCC670--10901--2 (RH)

KCC670--10901--3 (LH)

KCC670--10901--4 (RH)

KCC670--10900--1 (LH)

KCC670--10900--2 (RH).

POST--MOD

NOTES

1. For Aircraft Pre--SB

670BA--32--040.

2. Left side shown,

right side opposite.
SERVICE BULLETIN 670BA---32---043

SB 670BA---32---043

Page 12 of 15

July 02/2014

Revision A, Nov 13/2014

Installation of the Inboard MLG Doors

Figure 1 (Sheet 3 of 3)

ba8158a03.cgm, YL, February 13, 2014

B

A

A

B

3

LEGEND

3. Inboard MLG door

CC670--10520--15 (LH)

CC670--10520--16 (RH)

KBA670--10500--23 (LH)

KBA670--10500--24 (RH)

KBA670--10500--25 (LH)

KBA670--10500--26 (RH)

KBA670--10500--31 (LH)

KBA670--10500--32 (RH)

KBA670--10500--33 (LH)

KBA670--10500--34 (RH)

KBA670--10500--51 (LH)

KBA670--10500--52 (RH)

KBA670--10500--53 (LH)

KBA670--10500--54 (RH)

CC670--10520N1101 (LH)

CC670--10520N1102 (RH).

POST--MOD

NOTES

1. For Aircraft Post--SB

670BA--32--040.

2. Left side shown,

right side opposite.
SERVICE BULLETIN 670BA---32---043

SB 670BA---32---043

Page 13 of 15

July 02/2014

Revision A, Nov 13/2014

3. MATERIAL INFORMATION

A. Kit Information

Kit Contents:

KIT 670BA32043K1

PART NUMBER QTY NAME ALTERNATIVE NOTES

CC670-10520-15 1 Left Inboard MLG Door --- ---

KIT 670BA32043K2

PART NUMBER QTY NAME ALTERNATIVE NOTES

CC670-10520-16 1 Right Inboard MLG Door --- ---

NOTE: For allowable superseded parts, refer to the Parts Supersession Cross

References Lists at www.iflybombardier.com under Resources ---

Engineering Documents.

NOTE: Some parts listed in the kit content of this service bulletin are supplied in

a temporary condition of supply configuration. These parts are identified

with a ---SB, /SB, SB or other suffix after the Bombardier engineering part

number. When the parts are installed, with the instructions given in the

Accomplishment Instructions of this service bulletin, the parts agree with

the requirements of the engineering configuration. Refer to the SB

Introduction document for more explanation.

B. Consumable Information

For a list of consumables, refer to the different tasks, the service bulletin that are

given as references in this service bulletin.
SERVICE BULLETIN 670BA---32---043

SB 670BA---32---043

Page 14 of 15

July 02/2014

Revision A, Nov 13/2014

C. Special Tools and Equipment

For a list of special tools and equipment, refer to the different tasks, that are given

as references in this service bulletin.

D. Disposition of Parts

The table that follows shows the disposition of parts on the aircraft (or spares), and

the relationship between these parts to the new parts to be installed during the

incorporation of this service bulletin.

For the Left Inboard MLG Door

PRE-SB

PART NUMBER

NAME QTY DC POST-SB

PART NUMBER

NAME

CC670-10520-3 CC670-10520-13

CC670-10520-951 CC670-10520-15

CC670-10520-2003 CC670-10520-967

CC670-10520-2005 CC670-10520-2011

CC670-10520-2013 KCC670-10900-1

CC670-10520-2015 Left Inboard 1 DIS KCC670-10901-1 Left Inboard

KBA670-10500-27 MLG Door KCC670-10901-3 MLG Door

KBA670-10500-29 KBA670-10500-23

KBA670-10500-35 KBA670-10500-25

KBA670-10500-37 KBA670-10500-31

KBA670-10900-3 KBA670-10500-33

KBA670-10900-5 KBA670-10500-51

KBA670-10500-53

CC670-10520N1101
SERVICE BULLETIN 670BA---32---043

SB 670BA---32---043

Page 15 of 15

July 02/2014

Revision A, Nov 13/2014

For the Right Inboard MLG Door

PRE-SB

PART NUMBER

NAME QTY DC POST-SB

PART NUMBER

NAME

CC670-10520-4 CC670-10520-14

CC670-10520-952 CC670-10520-16

CC670-10520-2004 CC670-10520-968

CC670-10520-2006 CC670-10520-2012

CC670-10520-2014 KCC670-10900-2

CC670-10520-2016 Left Inboard 1 DIS KCC670-10901-2 Left Inboard

KBA670-10500-28 MLG Door KCC670-10901-4 MLG Door

KBA670-10500-30 KBA670-10500-24

KBA670-10500-36 KBA670-10500-26

KBA670-10500-38 KBA670-10500-32

KBA670-10900-4 KBA670-10500-34

KBA670-10900-6 KBA670-10500-52

KBA670-10500-54

CC670-10520N1102

Disposition code (DC):

DIS: Discard Part.

1
THANK YOU FOR YOUR COMMENTS

SERVICE BULLETIN FEEDBACK FORM/COMPLIANCE SHEET

(YOUR COMMENTS HELP US WRITE BETTER SERVICE BULLETINS)

Service Bulletin No.: Revision: 

Aircraft Serial Number: Date:

STRONGLY

DISAGREE

DISAGREE AGREE STRONGLY

AGREE

Instructions to do the service bulletin are

accurate.

Comments:

- - - -

Figure(s), picture(s), and/or Appendix

were helpful to do the service bulletin.

Comments:

- - - -

Part(s) or kit(s) agreed with the service

bulletin requirement.

Comments:

- - - -

The service bulletin was accomplished

within the estimated time given.

Comments:

- - - -

Overall, I was satisfied with this service

bulletin.

Comments:

- - - -

Operator: Service Centre:

Name: Telephone or Fax:

FAX your comments or feedback to (450) 476---7300

or e-mail to crj_sb_evaluation_form@aero.bombardier.com