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Aug 24/2011 SB 601R---71---033

SERVICE BULLETIN

Technical

Publications

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

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 HAS INCLUDED THE NEW OPERATOR

AIRCRAFT, THIS SERVICE BULLETIN MUST BE SENT TO THE LESSEE. IF THE OPERATOR

ON THE DISTRIBUTION LIST.

ATA SYSTEM: 71 ---10 NUMBER: 601R ---71 ---033

SUBJECT: Power Plant --- Cowling --- Installation of a Bracket for the Hold ---Open Rod

to Prevent Fouling with the Fuel Control Unit

1. PLANNING INFORMATION

A. Effectivity

(1) Aircraft Affected:

Service Bulletin: CL ---600---2B19 aircraft with serial numbers 7003 thru 7067,

7069 thru 7990 and 8000 thru 8112.

Production: This change will be incorporated before delivery on aircraft

with serial number 8113 and subsequent serial numbers.

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

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

sure you can complete this bulletin.
SERVICE BULLETIN 601R---71 ---033

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Aug 24/2011 SB 601R---71---033

B. Reason

(1) Condition

It is possible for the hold ---open rod of the upper core---cowl on the left engine

to become caught by the lever of the Fuel Control Unit (FCU) if it becomes

unstowed or was incorrectly stowed. This can cause the FCU to operate

incorrectly.

(2) Evidence

Many operators reported the incorrect operation of the FCU.

(3) Objective/Benefit

This service bulletin gives the procedure to do the Shorts service bulletin that

gives the procedure to install a bracket on the inside of the left upper

core---cowl. This will make sure that if the hold ---open rod becomes loose it

will not touch the lever of the FCU.

C. Description

Circuit breakers are opened. The left upper core---cowl door is removed. The

Shorts service bulletin is done. The left upper core---cowl door is installed and the

circuit breakers are closed. The aircraft is returned to service.

D. Compliance

Recommended Service Bulletin.

Bombardier recommends that this service bulletin be done no more than 6000

flight hours or 36 months, whichever comes first, from the release date of this

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

operator.

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.
SERVICE BULLETIN 601R---71 ---033

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Aug 24/2011 SB 601R---71---033

F. Manpower

The man-hours given below are estimates for direct labour 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 labour assistance, please speak with a Fleet Services

representative for a quote. The Fleet Services Team can be

contacted through the CRC at 514-855-8500 or email at

thd.crj@aero.bombardier.com.

It will take an estimated 1.5 man-hours to complete this service bulletin. The

man-hours are divided in the table that follows (elapsed cure time is not included in

the man-hour summary given above):

TASK MAN-HOURS

(1) Job Set-Up 0.75

(2) Procedure NA

(3) Test NA

(4) Job Close-Out 0.75

NOTE: These estimates do not include the man-hours necessary to do Shorts

service bulletin CF34---NAC ---71---056.
SERVICE BULLETIN 601R---71 ---033

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Aug 24/2011 SB 601R---71---033

G. Material --- Price and Availability

Refer to Shorts service bulletin CF34---NAC ---71---056.

For Business/Corporate Operators

All Business/Corporate operators (i.e. operators who do not have a commercial

airline operation) refer to SB 800-00-004 for commercial policy coverage and

logistics/planning arrangements (refer to www.cic.bombardier.com/technical

library/service bulletins/challenger/850/SB 800-00-004).

To place an order for parts or kits, please call Bombardier Parts Logistics at

514-855-2999 or 1-866-538-1247.

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

Restriction and/or Special Instruction (RSI) C ---A272, Revision A.

Shorts Service Bulletin CF34---NAC ---71---056, dated July 18/2011.

Aircraft Maintenance Manual

For Bombardier reference only: PCA 6374.

L. Other Publications Affected

Illustrated Parts Catalogue (IPC)

M. Relationship Chart

Not applicable.
SERVICE BULLETIN 601R---71 ---033

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Aug 24/2011 SB 601R---71---033

2. ACCOMPLISHMENT INSTRUCTIONS

Reference Information

REFERENCE DESIGNATION

AMM 24---00---00---910---801 Electrical/Electronic Safety Precautions

AMM 71---12---01---000---801 Removal of the Upper Core---Cowl Door

AMM 71---12---01---400---801 Installation of the Upper Core---Cowl Door

A. Job Set-Up

(1) Obey all the electrical/electronic safety precautions

(Refer to AMM 24---00---00---910---801).

For aircraft 7003 ---7067, 7069 ---7890

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

CB PANEL CB NO. NAME ZONE

CBP ---1 M2 ENG IGN A 221

CBP ---1 M3 ENG IGN B 221

For aircraft 7891 and subs

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

CB PANEL CB NO. NAME ZONE

CBP ---1 M3 ENG IGN B 221

CBP ---4 C6 ENG IGN A 222

For all aircraft

(4) Remove the left upper core---cowl door (Refer to AMM 71---12---01---000---801).
SERVICE BULLETIN 601R---71 ---033

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Aug 24/2011 SB 601R---71---033

B. Procedure

Refer to Figure 1 .

(1) Do Shorts service bulletin CF34---NAC ---71---056.

C. Job Close-Out

(1) Install the left upper core---cowl door (Refer to AMM 71---12---01---400---801).

For aircraft 7003 ---7067, 7069 ---7890

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

CB PANEL CB NO. NAME ZONE

CBP ---1 M2 ENG IGN A 221

CBP ---1 M3 ENG IGN B 221

For aircraft 7891 and subs

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

CB PANEL CB NO. NAME ZONE

CBP ---1 M3 ENG IGN B 221

CBP ---4 C6 ENG IGN A 222

For all aircraft

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

logbooks: “Service Bulletin 601R---71---033, Power Plant --- Cowling ---

Installation of a Bracket for the Hold ---Open Rod to Prevent Fouling with the

Fuel Control Unit, incorporated.”
SERVICE BULLETIN 601R---71 ---033

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Aug 24/2011 SB 601R---71---033

Upper Core ---Cowl

Figure 1

rsb601r71033_001.dg, sd, jul13/2011

UPPER

CORE--COWL

(REF)
SERVICE BULLETIN 601R---71 ---033

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Aug 24/2011 SB 601R---71---033

3. MATERIAL INFORMATION

A. Kit Information

None.

B. Consumable Information

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

service bulletin that are given as references in this service bulletin.

C. Special Tools and Equipment

There are no special tools and equipment for this service bulletin.

D. Disposition of Parts

Not applicable.

1
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: 601R-71-033 ISSUE: NC

 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: 

OPERATOR: NAME (Please print) 

SERVICE CENTER: TELEPHONE: 

AIRCRAFT SERIAL NO.: FACSIMILE: 

DATE OF SB 

INCORPOARTION