Landing Gear − Landing−Gear Hydraulic Extension/Retraction − Inspection of

the Main Landing Gear (MLG) Retraction−Actuator and Installation of a New

Jam nut

These pages transmit:

Revision C of Service Bulletin 670BA−32−031,

pages 1 thru 18, dated Apr 17/2012.

For aircraft that have incorporated a previous issue of this service bulletin, it is

necessary to make sure that the time compliance is applied to the actuators. Refer to

the Compliance section paragraph 1.D. for other changes.

Reason:

Revised the title of this service bulletin.

Revised Planning Information, paragraph 1., to:

Add aircraft serial number 10002 to the service bulletin effectivity.

Add PART B for the accomplishment of Goodrich Service Bulletin

49600−32−64 and change the time compliance in the Compliance section.

Revised Accomplishment Instructions, paragraph 2., to:

Add PART B.

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

technical content.

SERVICE BULLETIN 670BA−32−031

S.B. 670BA−32−031

Page 1 of 2

Apr 17/2012

SERVICE BULLETIN

REVISION TRANSMITTAL SHEET

SUBJECT:
Document Instructions:

Discard the copy of Service Bulletin 670BA−32−031, Revision B, dated Jul 29/2011.

Replace with the copy attached.

KEEP GOODRICH SERVICE BULLETIN 49600−32−63, REVISION 1. DISCARD THE

COPY OF GOODRICH SERVICE BULLETIN 49600−32−64, REVISION 2, AND

REPLACE WITH 49600−32−64, REVISON 3.

Service Bulletin History:

Initial issue, dated Mar 14/2011.

Revision A, dated Jun 09/2011.

Revision B, dated Jul 29/2011.

SERVICE BULLETIN 670BA−32−031

S.B. 670BA−32−031

Page 2 of 2

Apr 17/2012
Landing Gear − Landing−Gear Hydraulic Extension/Retraction − Inspection of

the Main Landing Gear (MLG) Retraction−Actuator and Installation of a New

Jam nut

1. PLANNING INFORMATION

A. Effectivity

(1) Aircraft with the following components installed:

Part number: P/N 49600−5, 49600−7, and 49600−11

Serial number: SPP0001 thru SPP0388, SPP020389 thru

SPP021300, SPP011301 thru SPP011318,

SPP011355, and SPP011356.

Installed at the time

of delivery on

CL−600−2C10

aircraft with serial

numbers:

10002 thru 10320 [1]

Installed at the time

of delivery on

CL−600−2D15 and

CL−600−2D24

aircraft with serial

numbers:

15001 thru 15262 [1]

SERVICE BULLETIN

ATA SYSTEM: 32−32 NUMBER: 670BA−32−031

S.B. 670BA−32−031

Page 1 of 18

Mar 14/2011

Revision C, Apr 17/2012

Technical

Publications

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

THIS SERVICE BULLETIN MUST BE SENT TO THE LESSEE. IF THE OPERATOR HAS SOLD AIRCRAFT OR

TRANSFERRED SPARES IN THE LAST SIX MONTHS, THIS SERVICE BULLETIN MUST BE SENT TO THE

NEW OWNER, UNLESS CONFIRMATION WAS RECEIVED THAT BOMBARDIER COMMERCIAL AIRCRAFT

DIVISION HAS INCLUDED THE NEW OPERATOR ON THE DISTRIBUTION LIST.

SUBJECT:
Spares: Examine all spare parts. If a part with a serial

number listed above is found, it is necessary to

incorporate Goodrich service bulletin 49600−32−63

and 49600−32−64.

All CL−600−2C10,

CL−600−2D15, and

CL−600−2D24

aircraft

If parts with the serial numbers listed above are

installed on aircraft, but were not identified at the

time of delivery, on the same or on a different

aircraft model, it is necessary to incorporate

Goodrich service bulletin 49600−32−63 and

49600−32−64.

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 bulletin(s). Before you do this

bulletin, examine all STC, STA or equivalent action changes to

make sure this bulletin can be completed.

B. Reason

(1) Condition

Possible corrosion on the interface of the rod end and the piston of the MLG

retraction actuator can cause the jam nut of the MLG retraction actuator to

become loose. This can cause the rod end and the piston of the MLG

retraction actuator to disconnect.

(2) Evidence

Corrosion was found on some retraction actuators during environmental

qualification testing.

(3) Objective/Benefit

This service bulletin gives the procedure to do Goodrich Service Bulletin

49600−32−63 and 49600−32−64. This will make sure that the MLG

retraction actuator is not corroded, the jam nut of the MLG retraction actuator

is correctly torqued, and prevent the rod end and the piston of the MLG

retraction actuator from being disconnected.

C. Description

This service bulletin is divided into 2 parts: PART A and PART B.

PART A − Torque Inspection of the Jam Nut of the MLG Retraction Actuator

Circuit breakers are opened. The access panels for the MLG retraction actuators

SERVICE BULLETIN 670BA−32−031

S.B. 670BA−32−031

Page 2 of 18

Mar 14/2011

Revision C, Apr 17/2012
are removed. Goodrich Service Bulletin 49600−32−63 is done. If necessary, the

MLG retraction actuators are disconnected or removed and installed.

The circuit breakers are closed. The access panels for the MLG retraction

actuators are installed. If the MLG retraction actuators were disconnected or

removed, the operational tests of the landing−gear extension/retraction system

and the landing−gear alternate extension system are done.

PART B − Installation of the New Jam Nut on the MLG Retraction Actuator

Circuit breakers are opened. The access panels for the MLG retraction actuators

are removed. The MLG retraction actuators are removed. Goodrich Service

Bulletin 49600−32−64 is done. The MLG retraction actuators are installed.

The circuit breakers are closed. The access panels for the MLG retraction

actuators are installed. The operational tests of the landing−gear

extension/retraction system and the landing−gear alternate extension system are

done.

D. Compliance

For Aircraft Pre−Goodrich SB 49600−32−64

Recommended Service Bulletin.

Bombardier Aerospace recommends that PART A of this service bulletin be done

as shown in the table that follows, unless otherwise directed by the airworthiness

authority of the operator:

APPLICABLE TIME COMPLIANCE REPETITIVE

ACTION

For actuators that have more than 8000

flight hours or more than four years from

the entry−into−service/restoration date,

whichever comes first.

To be done before 1200 flight

hours from the release date on

this service bulletin.

This service

bulletin is to be

repeated every

1200 flight

hours from the

initial

incorporation

date until

PART B is

done.

For actuators that have 8000 flight hours

or less and four years or less from the

entry−into−service/restoration date.

To be done before the actuators

have 9200 flight hours or five

years, whichever comes first.

Bombardier recommends that PART B of this service bulletin be done no more

than 20 000 flight hours from the release date of this service bulletin, unless

otherwise directed by the airworthiness authority of the operator.

SERVICE BULLETIN 670BA−32−031

S.B. 670BA−32−031

Page 3 of 18

Mar 14/2011

Revision C, Apr 17/2012
For Aircraft Post−Goodrich SB 49600−32−64

It is not necessary to do this service bulletin.

For all Aircraft

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

Tolerance Inspections (DTIs).

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 an estimate 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, liaison, 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. The Fleet Services team can be contacted

via the CRC at 514−855−8500 or email at

thd.crj@aero.bombardier.com.

PART A − Torque Inspection of the Jam Nut of the MLG Retraction Actuator

It will take an estimated 1.5 man−hours to complete PART A of this service

bulletin. The man−hours are divided as shown in the table that follows:

SERVICE BULLETIN 670BA−32−031

S.B. 670BA−32−031

Page 4 of 18

Mar 14/2011

Revision C, Apr 17/2012
TASK MAN−HOURS

(1) Job Set−Up 0.50

(2) Procedure 0.25

(3) Test 0.00

(4) Job Close−Out 0.75

NOTE: This estimate does not include the man−hours necessary to do

Goodrich Service Bulletin 49600−32−63.

NOTE: This estimate does not include the man−hours necessary to remove or

disconnect and install the MLG retraction actuators.

PART B − Installation of the New Jam Nut on the MLG Retraction Actuator

It will take an estimated 9.5 man−hours to complete PART B of this service

bulletin. The man−hours are divided as shown in the table that follows:

TASK MAN−HOURS

(1) Job Set−Up 2.0

(2) Procedure 4.0

(3) Test 1.0

(4) Job Close−Out 2.5

NOTE: This estimate does not include the man−hours necessary to do

Goodrich Service Bulletin 49600−32−64.

G. Material − Price and Availability

(1) Refer to Goodrich Service Bulletins 49600−32−63 and 49600−32−64.

(2) 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.

(1) Refer to paragraph 3.C. for a list of special tools and equipment for this

SERVICE BULLETIN 670BA−32−031

S.B. 670BA−32−031

Page 5 of 18

Mar 14/2011

Revision C, Apr 17/2012
service bulletin.

I. Weight and Balance

Not changed.

J. Electrical Load Data

Not changed.

K. References

− Restriction and/or Special Instruction (RSI), C−32−1356−00, Revision B.

− Goodrich Service Bulletin 49600−32−63, Revision 1, dated May 17/11.

− Goodrich Service Bulletin 49600−32−64, Revision 3, dated Dec 15/11.

− Aircraft Maintenance Manual (AMM).

− Electrical/Electronic Components − Standard Practices Manual (ESPM).

− For Bombardier reference only: PCA 73949 and 74323.

L. Other Publications Affected

None.

M. Relationship Chart

PART A − Torque Inspection of the Jam Nut of the MLG Retraction Actuator

Not applicable.

PART B − Installation of the New Jam Nut on the MLG Retraction Actuator

PRE−SB

PART

NUMBER

NAME POST−SB PART

NUMBER NAME

49600−11 Retraction

Actuator 49600−13 RetractionActuator

SERVICE BULLETIN 670BA−32−031

S.B. 670BA−32−031

Page 6 of 18

Mar 14/2011

Revision C, Apr 17/2012
2. ACCOMPLISHMENT INSTRUCTIONS

PART A − Torque Inspection of the Jam Nut of the MLG Retraction Actuator

A. Job Set−Up

(1) 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 12−00−00−867−801 Standard Aircraft Configuration for

Maintenance

AMM 12−00−06−862−801 Pressurize Hydraulic System No. 1

and No. 2

AMM 12−00−06−862−802 Release Hydraulic Pressure of

System No. 1 and No. 2

AMM 12−00−06−862−803 Pressurize Hydraulic System No. 3

AMM 12−00−06−862−804 Release Hydraulic Pressure of

System No. 3

AMM 20−21−00−910−801 Torquing of Threaded Fasteners

AMM 20−51−00−000−801 Removal of Cotter Pins

AMM 20−51−00−400−801 Installation of Cotter Pins

AMM 24−00−00−910−801 Electrical/Electronic Safety

Precautions

AMM 29−00−00−910−802 Hydraulic Technical Precautions

AMM 29−10−00−870−801 Bleed Hydraulic Systems No. 1 and

No. 2

AMM 29−10−00−870−802 Bleed Hydraulic System No. 3

AMM 32−30−00−710−801 Operational Test of the

Landing−Gear Extension/Retraction

System

SERVICE BULLETIN 670BA−32−031

S.B. 670BA−32−031

Page 7 of 18

Mar 14/2011

Revision C, Apr 17/2012
REFERENCE DESIGNATION

AMM 32−32−05−000−801 Removal of the MLG

Retraction−Actuator

AMM 32−32−05−400−801 Installation of the MLG

Retraction−Actuator

AMM 32−34−00−710−801 Operational Check of the

Landing−Gear Alternate−Extension

System

AMM 57−20−32−000−801 Removal of the Access Panel for the

Main Landing Gear (MLG)

Retraction Actuator (542AT/642AT)

AMM 57−20−32−400−801 Installation of the Access Panel for

the Main Landing Gear (MLG)

Retraction Actuator (542AT/642AT)

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

(AMM 12−00−00−867−801).

(3) Obey all the electrical/electronic safety precautions (AMM

24−00−00−910−801).

(4) Open, safety, and tag the circuit breakers that follow:

CB−PANEL CB NO. NAME

CBP−1 F11 HYD SYST AC PUMP CONT 3B

CBP−1 F14 HYD SYST AC PUMP CONT 2

CBP−2 F14 HYD SYST AC PUMP CONT 3A

ACPC ACPC HYD PUMP 2B

(5) Remove the access panels that follow:

PANEL NAME REFERENCE

542AT Access Panel AMM 57−20−32−000−801

642AT Access Panel AMM 57−20−32−000−801

SERVICE BULLETIN 670BA−32−031

S.B. 670BA−32−031

Page 8 of 18

Mar 14/2011

Revision C, Apr 17/2012
(6) Obey all the hydraulic technical precautions (AMM 29−00−00−910−802).

B. Procedure

Refer to Figure 1.

NOTE: This procedure is applicable to the left and right sides. The procedure that

follows is written for the left side.

(1) Do Goodrich Service Bulletin 49600−32−63.

(a) If it is necessary to torque the jam nut during the incorporation of the

Goodrich service bulletin, and it is too difficult to torque while installed,

disconnect or remove the retraction actuator (1) as follows:

1 Release the hydraulic pressure of system No. 2 (AMM

12−00−06−862−802).

2 Release the hydraulic pressure of system No. 3 (AMM

12−00−06−862−804).

3 Put the aircraft on jacks (AMM 07−11−01−582−801).

4 On the MLG, remove and discard the cotter pin (3) from the nut (4).

5 Remove the nut (4), the washers (5), and the pin (6) that attach the

rod end of the retraction actuator (1) to the bracket (2).

6 Move the rod end of the retraction actuator (1) away from the

bracket (2).

7 If necessary, remove the retraction actuator (1) (AMM

32−32−05−000−801).

(b) If the retraction actuator was disconnected, do as follows:

1 Lubricate the bushings on the bracket (2) with grease.

2 Extend the piston of the retraction actuator (1) as necessary to align

the holes of the rod end and the bracket (2).

3 Apply a thin layer of corrosion inhibitor on the pin (6).

4 Remove the unwanted corrosion inhibitor from the pin (6).

5 Install the pin (6) through the bracket (2) and the rod end of the

retraction actuator (1).

SERVICE BULLETIN 670BA−32−031

S.B. 670BA−32−031

Page 9 of 18

Mar 14/2011

Revision C, Apr 17/2012
6 Install the washers (5) and the nut (4) on the pin (6).

NOTE: It is permitted to install one or two washers (5) to align the

locking mechanism of the pin (6) and the nut (4).

7 Torque the nut (4) from 150 to 200 lbf·in (16.94 to 22.59 N·m) plus

running torque.

8 Measure the gap between the washer (5) and the bracket (2).

9 Make sure that the gap is between 0.005 and 0.034 in. (0.127 and

0.864 mm).

10 Safety the nut (4) with a new cotter pin (3).

11 Apply a yellow anti−sabotage strip across the nut (4).

(c) If the retraction actuator was removed, install the retraction actuator (1)

(AMM 32−32−05−400−801).

SERVICE BULLETIN 670BA−32−031

S.B. 670BA−32−031

Page 10 of 18

Mar 14/2011

Revision C, Apr 17/2012
ba6852a01.cgm, sc, 14Jan 11

B

A

A

B

C

C

6

5

3

4

2

ROD END

(REF)

BUSHING

(REF)

1

6

2 5

4

ROD END

(REF)

0.005 TO 0.034 in.

(0.127 TO 0.864 mm)

C − C

LEGEND

1. Retraction actuator.

2. Bracket.

3. Cotter pin MS24665−376.

4. Nut.

5. Washer.

6. Pin.

SERVICE BULLETIN 670BA−32−031

MLG Retraction−Actuator

Figure 1

S.B. 670BA−32−031

Page 11 of 18

Mar 14/2011

Revision C, Apr 17/2012
C. Job Close−Out

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

(2) Remove the tags and close the circuit breakers that follow:

CB−PANEL CB NO. NAME

CBP−1 F11 HYD SYST AC PUMP CONT 3B

CBP−1 F14 HYD SYST AC PUMP CONT 2

CBP−2 F14 HYD SYST AC PUMP CONT 3A

ACPC ACPC HYD PUMP 2B

(3) Install the access panels that follow:

PANEL NAME REFERENCE

542AT Access Panel AMM 57−20−32−400−801

642AT Access Panel AMM 57−20−32−400−801

(4) If the retraction actuator was removed or disconnected, do as follows:

(a) Pressurize hydraulic system No. 2 (AMM 12−00−06−862−801).

(b) Pressurize hydraulic system No. 3 (AMM 12−00−06−862−803).

(c) Bleed hydraulic systems No. 2 (AMM 29−10−00−870−801).

(d) Bleed hydraulic systems No. 3 (AMM 29−10−00−870−802).

(e) Do an operational test of the landing−gear extension/retraction system

(AMM 32−30−00−710−801).

(f) Do an operational test of the landing−gear alternate−extension system

(AMM 32−34−00−710−801).

(g) Remove the aircraft from jacks (AMM 07−11−01−586−801).

SERVICE BULLETIN 670BA−32−031

S.B. 670BA−32−031

Page 12 of 18

Mar 14/2011

Revision C, Apr 17/2012
(5) When PART A of this service bulletin is completed, make this entry in the

applicable logbook(s): "Service Bulletin 670BA−32−031, Revision C, Landing

Gear − Landing−Gear Hydraulic Extension/Retraction − Inspection of the

Main Landing Gear (MLG) Retraction−Actuator and Installation of a New

Jam Nut, PART A, incorporated."

PART B − Installation of the New Jam Nut on the MLG Retraction Actuator

A. Job Set−Up

(1) Reference Information

REFERENCE DESIGNATION

AMM 12−00−00−867−801 Standard Aircraft Configuration for

Maintenance

AMM 12−00−06−862−801 Pressurize Hydraulic System No. 1

and No. 2

AMM 12−00−06−862−802 Release Hydraulic Pressure of

System No. 1 and No. 2

AMM 12−00−06−862−803 Pressurize Hydraulic System No. 3

AMM 12−00−06−862−804 Release Hydraulic Pressure of

System No. 3

AMM 24−00−00−910−801 Electrical/Electronic Safety

Precautions

AMM 29−00−00−910−802 Hydraulic Technical Precautions

AMM 29−10−00−870−801 Bleed Hydraulic Systems No. 1 and

No. 2

AMM 29−10−00−870−802 Bleed Hydraulic System No. 3

AMM 32−30−00−710−801 Operational Test of the

Landing−Gear Extension/Retraction

System

AMM 32−32−05−000−801 Removal of the MLG

Retraction−Actuator

AMM 32−32−05−400−801 Installation of the MLG

Retraction−Actuator

SERVICE BULLETIN 670BA−32−031

S.B. 670BA−32−031

Page 13 of 18

Mar 14/2011

Revision C, Apr 17/2012
REFERENCE DESIGNATION

AMM 32−34−00−710−801 Operational Check of the

Landing−Gear Alternate−Extension

System

AMM 57−20−32−000−801 Removal of the Access Panel for the

Main Landing Gear (MLG)

Retraction Actuator (542AT/642AT)

AMM 57−20−32−400−801 Installation of the Access Panel for

the Main Landing Gear (MLG)

Retraction Actuator (542AT/642AT)

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

(AMM 12−00−00−867−801).

(3) Obey all the electrical/electronic safety precautions (AMM

24−00−00−910−801).

(4) Open, safety, and tag the circuit breakers that follow:

CB−PANEL CB NO. NAME

CBP−1 F11 HYD SYST AC PUMP CONT 3B

CBP−1 F14 HYD SYST AC PUMP CONT 2

CBP−2 F14 HYD SYST AC PUMP CONT 3A

ACPC ACPC HYD PUMP 2B

(5) Remove the access panels that follow:

PANEL NAME REFERENCE

542AT Access Panel AMM 57−20−32−000−801

642AT Access Panel AMM 57−20−32−000−801

(6) Obey all the hydraulic technical precautions (AMM 29−00−00−910−802).

SERVICE BULLETIN 670BA−32−031

S.B. 670BA−32−031

Page 14 of 18

Mar 14/2011

Revision C, Apr 17/2012
(7) Release the hydraulic pressure of system No. 2 (AMM 12−00−06−862−802).

(8) Remove the MLG auxiliary actuator (AMM 32−32−03−000−801).

(9) Release the hydraulic pressure of system No. 3 (AMM 12−00−06−862−804).

(10) Remove the retraction actuator (1) (AMM 32−32−05−000−801).

B. Procedure

Refer to Figure 1.

NOTE: This procedure is applicable to the left and right sides. The procedure that

follows is written for the left side.

(1) Do Goodrich Service Bulletin 49600−32−64.

C. Job Close−Out

(1) Install the retraction actuator (1) (AMM 32−32−05−400−801).

(2) Install the MLG auxiliary actuator (AMM 32−32−03−400−801).

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

(4) Remove the tags and close the circuit breakers that follow:

CB−PANEL CB NO. NAME

CBP−1 F11 HYD SYST AC PUMP CONT 3B

CBP−1 F14 HYD SYST AC PUMP CONT 2

CBP−2 F14 HYD SYST AC PUMP CONT 3A

ACPC ACPC HYD PUMP 2B

(5) Pressurize hydraulic system No. 2 (AMM 12−00−06−862−801).

(6) Pressurize hydraulic system No. 3 (AMM 12−00−06−862−803).

(7) Bleed hydraulic systems No. 2 (AMM 29−10−00−870−801).

(8) Bleed hydraulic systems No. 3 (AMM 29−10−00−870−802).

SERVICE BULLETIN 670BA−32−031

S.B. 670BA−32−031

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Mar 14/2011

Revision C, Apr 17/2012
(9) Do an operational test of the landing−gear extension/retraction system

(AMM 32−30−00−710−801).

(10) Do an operational test of the landing−gear alternate−extension system

(AMM 32−34−00−710−801).

(11) Install the access panels that follow:

PANEL NAME REFERENCE

542AT Access Panel AMM 57−20−32−400−801

642AT Access Panel AMM 57−20−32−400−801

(12) When PART B of this service bulletin is completed, make this entry in the

applicable logbook(s): "Service Bulletin 670BA−32−031, Revision C, Landing

Gear − Landing−Gear Hydraulic Extension/Retraction − Inspection of the

Main Landing Gear (MLG) Retraction−Actuator and Installation of a New

Jam Nut, PART B, incorporated."

SERVICE BULLETIN 670BA−32−031

S.B. 670BA−32−031

Page 16 of 18

Mar 14/2011

Revision C, Apr 17/2012
3. MATERIAL INFORMATION

A. Kit Information

None.

B. Consumable Information

The materials that follow are necessary to do this service bulletin and can be ordered

from Bombardier or purchased directly from industry sources. If the material is

ordered from Bombardier, there can be some lead time because of shelf life of the

material.

CONSUMABLES

SPECIFICATION QUANTITY NAME REFERENCE

MS24665−376 2 Cotter pin

Not specified As

necessary

Grease, Aeroshell

#33 or equivalent

04−010 [1]

F925 As

necessary

Seal, yellow torque 09−033 [1]

6856K As

necessary

Corrosion inhibitor

Mastinox

13−001 [1]

[1] Refer to AMM 51−31−00−992−801.

NOTE: To complete this list of consumables, refer to the different tasks and the

Goodrich service bulletins given as references in this service bulletin.

C. Special Tools and Equipment

For a list of special tools and equipment, refer to the different tasks and the Goodrich

service bulletins given as references in this service bulletin.

D. Disposition of Parts

PART A − Torque Inspection of the Jam Nut of the MLG Retraction Actuator

Not applicable.

PART B − Installation of the New Jam Nut on the MLG Retraction Actuator

SERVICE BULLETIN 670BA−32−031

S.B. 670BA−32−031

Page 17 of 18

Mar 14/2011

Revision C, Apr 17/2012
PRE−SB PART

NUMBER

NAME QUANTITY DC POST−SB

PART

NUMBER

49600−11 Retraction

Actuator

2 RWI 49600−13

Disposition code (DC):

RWI: Rework the part as shown in Goodrich Service Bulletin

49600−32−64.

SERVICE BULLETIN 670BA−32−031

S.B. 670BA−32−031

Page 18 of 18

Mar 14/2011

Revision C, Apr 17/2012
THANK YOU FOR ANSWERING THIS EVALUATION FORM 

UPON COMPLETION OF THIS EVALUATION FORM/COMPLIANCE SHEET, FAX TO 

450-476-7300 

SERVICE BULLETIN EVALUATION FORM/COMPLIANCE SHEET 

(YOUR IDEAS WILL HELP US PROVIDE BETTER BULLETINS) 

SERVICE BULLETIN : 670BA-32-031 ISSUE: C 

 STRONGLY DISAGREE NEUTRAL AGREE STRONGLY 

 DISAGREE AGREE 

• Instructions to do the Service Bulletin 

were accurate. 

Comments:

    

• Illustration(s), figure(s), picture(s) and/or 

kit drawing(s) were helpful to carry out 

instructions. 

Comments:

    

• If a parts kit was required, did the kit 

contents received agree with the 

contents listed in the bulletin? 

Comments: 

    

• Aircraft hands-on work was 

accomplished in estimated time. 

 Comments:

    

• Overall, I was satisfied with this Service 

Bulletin. 

 Comments: 

    

PLEASE SUPPLY US WITH THE FOLLOWING DATA AND FAX TO (450) 476-7300: 

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