the evolution of mobility

SB 670BA−27−069

Page 1 of 8

Mar 30/2015

 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: 27−35 NUMBER: 670BA−27−069

SUBJECT: Flight Controls − Stall Protection System − Replacement of the

Incorrectly Calibrated Angle-of-Attack (AOA) Transducer.

1. PLANNING INFORMATION

A. Effectivity

(1) Aircraft with the components that follow installed:

PART NUMBER:

 C16258AA (601R59154−3) and

C16258AB (601R59154−5)

SERIAL NUMBERS:

217, 221, 222, 257, 476, 481, 505, 513, 536, 634A,

730, 929, 1514, 1524, 1564, 1597, 1613, 1674, 1721,

1826, 1865C, 2054C, 2097C, 2098C, 2143C, 2152B,

2164C, 2166C, 2212C, 2505C, 2539, 2602, 2612,

3018, 3019, 3021, 3022, 3023, 3024, 3025, 3026,

3027, 3028, 3029, 3046, 3047, 3054, 3055, 3056,

3057, 3058, 3059, 3068, 3069, 3070, 3071, 3072,

3074, 3075, 3076, 3077, 3078, 3080, 3081, 3082,

3084, 3085, 3086, 3087, 3088, 3089, 3091, 3092,

3093, 3094, 3095, 3096, 3097, 3118, 3122, 3150,

3151, 3166, 3194, and 3197.

Note: Serial number that have a suffix letter D have

the Thales Avionics Service Bulletin

C16258A−27−006 incorporated. (Example: S/N 217

or 217A becomes S/N217D). Thus they do not have

to be replaced.
SERVICE BULLETIN 670BA−27−069

SB 670BA−27−069

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Mar 30/2015

PART NUMBER: C16258AA (601R59154−3) and 

C16258AB (601R59154−5)

INSTALLED AT THE

TIME OF DELIVERY

ON CL−600−2C10

AIRCRAFT SERIAL

NUMBERS:

10002 thru 10999 [1]

INSTALLED AT THE

TIME OF DELIVERY

ON CL−600−2D24

and CL−600−2D15

AIRCRAFT SERIAL

NUMBERS:

15001 thru 15990 [1]

INSTALLED AT THE

TIME OF DELIVERY

ON CL−600−2E25

AIRCRAFT SERIAL

NUMBERS:

19001 thru 19990 [1]

SPARES:

Examine all spare parts. If a part with a serial

number listed above is found, it is necessary to

incorporate Thales Service Bulletin

C16258A−27−006.

ALL CL−600−2C10,

CL−600−2D15,

CL−600−2D24, and

CL−600−2E25,

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 Thales

Service Bulletin C16258A−27−006.

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−27−069

SB 670BA−27−069

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Mar 30/2015

B. Reason

(1) Condition

Some Angle-of-Attack (AOA) transducers P/N C16258AA and P/N C16258AB

were incorrectly calibrated. This can cause the stall protection system to not

operate correctly and result in a late activation of the stick pusher.

(2) Evidence

The manufacturer of the AOA transducer reported that the calibration fixture of

the AOA transducers, at the manufacturing plant and the repair facilities, were

misaligned and caused an incorrect calibration of some AOA transducers.

(3) Objective/Benefit

This service bulletin gives the list of the incorrectly calibrated AOA transducers

and the instructions to replace them.

Replacement of the affected AOA transducers will prevent late activation of the

stick pusher, if a stall occurs.

C. Description

The AOA transducer(s) with a serial number shown in Table 1 of the effectivity

section of this service bulletin is/are removed. The AOA transducer(s) is/are

installed.

D. Compliance

Recommended service bulletin.

Bombardier recommends that this service bulletin be done at no more than 5000

flight hours or no later than 24 months from the release date on this service bulletin,

whichever comes first, 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 670BA−27−069

SB 670BA−27−069

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Mar 30/2015

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 an estimate. Call the Fleet Services Team through the

CRC at 1−844−272−2720 (1−844−CRC−CRC0) or 1−514−855−8500 or

e-mail at thd.crj@aero.bombardier.com.

It will take an estimated 4.5 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 0.25

(2) Procedure 3.00

(3) Test 1.00

(4) Job Close-Out 0.25

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

Service Bulletin C16258A−27−006.
SERVICE BULLETIN 670BA−27−069

SB 670BA−27−069

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G. Material − Price and Availability

There are no kits for this service bulletin.

(1) Refer to Thales Service Bulletin C16258A−27−006 for terms and conditions.

(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. 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−27−1648−00, Revision A

Thales Service Bulletin C16258A−27−006, dated Oct/26/2012

Aircraft Maintenance Manual (AMM)

For Bombardier reference only: PCA 76112

L. Other Publications Affected

None.

M. Relationship Chart

Not applicable.
SERVICE BULLETIN 670BA−27−069

SB 670BA−27−069

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Mar 30/2015

2. ACCOMPLISHMENT INSTRUCTIONS

Reference Information

REFERENCE DESIGNATION

AMM 27−35−05−000−801 Removal of Angle-of-Attack Transducer

AMM 27−35−05−400−801 Installation of Angle-of-Attack Transducer

A. Job Set-Up

(1) Refer to the procedure.

B. Procedure

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

that follows is written for the left side. The differences are given.

Refer to Figure 1 .

(1) Remove the affected AOA transducer (1) (refer to AMM task

27−35−05−000−801).

(2) Install the AOA transducer (1) with a serial number that is not found in the

table shown in the effectivity section of this service bulletin or with a serial

number that has the letter D" at the end.

NOTE: When the Thales Service Bulletin C16258A−27−006 is done, the letter

D" is added to the serial number of the AOA transducer.

C. Job Close-Out

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

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

logbooks: Service Bulletin 670BA−27−069, Flight Controls − Stall

Protection System − Replacement of the incorrectly Calibrated

Angle-of-Attack (AOA) Transducer., incorporated."
SERVICE BULLETIN 670BA−27−069

SB 670BA−27−069

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Mar 30/2015

AOA Transducer − locator

Figure 1 (Sheet 1 of 1)

LEGEND

1. AOA transducer.

ba8421a01, kp, Jan. 20, 2015

A

1

LEFT SIDE SHOWN

RIGHT SIDE OPPOSITE

A
SERVICE BULLETIN 670BA−27−069

SB 670BA−27−069

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Mar 30/2015

3. MATERIAL INFORMATION

A. Kit Information

None.

B. Consumable Information

For a list of consumables, refer to the different tasks, the Thales service bulletin is

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, the Thales

service bulletin is 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.

PRE-SB

PART NUMBER

NAME QTY DC POST-SB

PART NUMBER

C16258AA,

(601R59154−3)

C16258AB,

(601R59154−5)

AOA Transducer 2 MOD

C16258AA,

(601R59154−3)

C16258AB

(601R59154−5)

Disposition code (DC):

MOD: Modify part as shown in Thales Service Bulletin C16258A−27−006.

1 
the evolution of mobility

THANK YOU FOR YOUR COMMENTS

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(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:

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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