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the evolution of mobility SB 601R−27−165 Page 1 of 11 Dec 20/2016
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: 601R−27−165 SUBJECT: Flight Controls − Stall Protection System − Replacement or Modification of the Angle of Attack (AOA) Transducers to Introduce a new Vane and Gearwheel Assembly
1. PLANNING INFORMATION A. Effectivity Service Bulletin: CL−600−2B19 aircraft with serial numbers 7003 thru 7067, 7069 thru 7990, 8000 thru 8113.
Production: Aircraft serial number 8114 and subsequent serial numbers will have this change incorporated before delivery.
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 601R−27−165 SB 601R−27−165 Page 2 of 11 Dec 20/2016 B. Reason
(1) Condition It is possible that some AOA transducer P/Ns 45−150−340, C16258AA and C16258AB could have a loss of precision. This loss of precision could be undetected by the Stall Protection Computer, which could cause early/late shaker activation or early/late pusher activation.
Also, it is possible for the heating element of AOA transducer P/N C16258AB to not operate correctly which could cause a /quoteblleftL(R) AOA HEAT" message on the EICAS.
(2) Evidence The manufacturer of the AOA transducer reported that the resolver gear of the AOA transducer could have too much wear.
The manufacturer of the AOA transducer reported that it is possible for the heating element of AOA transducer P/N C16258AB to not operate correctly.
(3) Objective/Benefit This service bulletin gives the instruction to replace the AOA transducers. The replacement of the AOA transducers is to prevent stall protection system early/late shaker activation or early/late pusher activation and to make sure the heating element of the AOA transducer operates correctly.
C. Description The AOA transducers are removed and replaced by new or modified AOA transducers.
D. Compliance Recommended service bulletin.
For Aircraft 7003 thru 7890 Bombardier recommends that this service bulletin be done at no more than 8909 flight hours or no later than 46 months from the release date on this service bulletin, whichever comes first, unless otherwise directed by the airworthiness authority of the operator.
For Aircraft 7891 thru 8113 Bombardier recommends that this service bulletin be done at the earliest convenience of the operator, unless otherwise directed by the airworthiness authority of the operator.
SERVICE BULLETIN 601R−27−165 SB 601R−27−165 Page 3 of 11 Dec 20/2016 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 in 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 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).
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 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.
SERVICE BULLETIN 601R−27−165 SB 601R−27−165 Page 4 of 11 Dec 20/2016 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 G. Material − Price and Availability
(1) There are no kits for this service bulletin. The part in the table that follows is necessary to do this service bulletin.
PART NUMBER NAME QTY C16258AC (601R59154−7) AOA Transducer 2 Refer to the following for terms and conditions:
− Thales Customer Information Letter.
− Thales Service Bulletin C16258A−27−005 − Thales Service Bulletin C16258A−27−007.
Or speak with a Thales representative at the address below to schedule part delivery:
THALES Avionics 105, avenue du Général Eisenhower BP 63647 31036 TOULOUSE CEDEX 1 FRANCE Attn: Retrofit Manager Tel. : 33 5 61 19 76 95 Fax. : 33 5 61 19 68 20 e-mail : retrofit@fr.thalesgroup.com
(2) Refer to paragraph 3.B. for a list of consumables for this service bulletin.
SERVICE BULLETIN 601R−27−165 SB 601R−27−165 Page 5 of 11 Dec 20/2016 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.
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 order tools, please call Bombardier Parts Logistics at 514−855−2999 or 1−866−538−1247.
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−A304, Revision A Modification Summary TC601R18558, Revision A Thales Customer Information Letter.
Thales Service Bulletin C16258A−27−005, dated SEP 01/2015 Thales Service Bulletin C16258A−27−007, dated DEC 14/2016 Aircraft Maintenance Manual (AMM) For Bombardier reference only: PCA 7063
SERVICE BULLETIN 601R−27−165 SB 601R−27−165 Page 6 of 11 Dec 20/2016 L. Other Publications Affected Aircraft Illustrated Parts Catalogue (AIPC) M. Relationship Chart PRE-SB
PART NUMBER NAME POST -SBPART NUMBER 45−150−340 (601R59154−1) or C16258AA (601R59154−3) or C16258AB (601R591254−5) AOA Transducer C16258AC(601R59154−7)
SERVICE BULLETIN 601R−27−165 SB 601R−27−165 Page 7 of 11 Dec 20/2016
2. ACCOMPLISHMENT INSTRUCTIONS Reference Information
REFERENCE DESIGNATION AMM 24−00−00−910−801 Electrical/Electronic Safety Precautions AMM 24−00−00−910−802 Electrostatic Discharge Safety Precautions AMM 27−35−05−000−801 Removal of the Angle−of−Attack Transducer AMM 27−35−05−400−801 Installation of the Angle−of−Attack Transducer A. Job Set-Up NOTE: The steps in the Job Set-Up section of this service bulletin are recommended steps. The steps give a recommendation to get access to the work area. This recommendation is to give a safe work area and to minimize possible damage to surrounding aircraft parts. Alternative steps can be used at the operator discretion.
(1) Obey all the electrostatic discharge safety precautions (refer to AMM 24−00−00−910−802).
(2) Obey all the electrical/electronic safety precautions (refer to AMM 24−00−00−910−801).
SERVICE BULLETIN 601R−27−165 SB 601R−27−165 Page 8 of 11 Dec 20/2016 B. Procedure NOTE: This procedure is applicable to the left and the right sides. The procedure that follows is written for the left side. The differences are given.
(1) 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 in 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 for analysis and to get an approved disposition to complete this service bulletin.
Refer to Figure 1.
(2) Replace the AOA transducer (1) as follows:
NOTE: AOA transducer part number C16258AA (601R59154−3) can be modified to part number C16258AC (601R59154−7) by incorporating Thales Service Bulletins C16258A−27−005 and C16258A−27−007.
NOTE: AOA transducer part number C16258AB (601R59154−5) can be modified to part number C16258AC (601R59154−7) with Thales Service Bulletin C16258A−27−007.
(a) Remove the AOA transducer (1) (refer to AMM 27−35−05−000−801).
(b) Install the new or modified AOA transducer (1) (refer to AMM 27−35−05−400−801).
C. Job Close-Out NOTE: The steps in the Job Close-Out section of this service bulletin, except for the return-to-service tests, are recommended steps. The steps give a recommendation to install components removed during the Job Set-Up.
This recommendation is to make sure that the aircraft is safe and ready to return to service. Alternative steps can be used at the operator discretion.
(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: /quoteblleftService Bulletin 601R−27−165, Flight Controls − Stall Protection System − Replacement or Modification of the Angle of Attack (AOA) Transducers to Introduce a new Vane and Gearwheel Assembly, incorporated."
SERVICE BULLETIN 601R−27−165 SB 601R−27−165 Page 9 of 11 Dec 20/2016 AOA Transducer − Locator Figure 1 (Sheet 1 of 1) rsb601r27164_001, fp, 24 Nov 2016 A 1
LEFT SIDE SHOWN
RIGHT SIDE OPPOSITE A LEGEND
1. AOA transducer 45−150−340 (601R59154−1) or C16258AA (601R59154−3) or C16258AB (601R59154−5) (Pre−Mod) C16258AC (601R59154−7) (Post−Mod).
SERVICE BULLETIN 601R−27−165 SB 601R−27−165 Page 10 of 11 Dec 20/2016
3. MATERIAL INFORMATION A. Kit Information None.
B. Consumable Information For a list of consumables, refer to the different tasks that are 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 that are given as references in this service bulletin.
D. Disposition of Parts The table that follows shows the relation between the new parts and/or modified parts to be installed during the incorporation of this service bulletin and the disposition of the affected parts from the aircraft (or spares).
PRE-SB
PART NUMBER
NAME QTY DC POST -SB
PART NUMBER 45−150−340 (601R59154−1) AOA Transducer 2 RTN /C0001 C16258AC(601R59154−7) C16258AA (601R59154−3) AOA Transducer 2 RTN /C0019 C16258AC(601R59154−7) C16258AB (601R59154−5) AOA Transducer 2 RTN /C0004 C16258AC(601R59154−7) Disposition code (DC):
RTN : Return to vendor /C0001 Refer to Thales Customer Information Letter.
/C0019 Refer to Thales Customer Information Letter and to Thales Service Bulletins C16258A−27−005 and C16258A−27−007.
/C0004 Refer to Thales Customer Information Letter and to Thales Service Bulletin C16258A−27−007.
SERVICE BULLETIN 601R−27−165 SB 601R−27−165 Page 11 of 11 Dec 20/2016 Parts can be returned to the addresses that follow:
THALES AVIONICS CSC C/O S C O Aerospace and Defence 2 rue des Voyelles Zone Cargo 6 95723 Roissy CDG AIRPORT FRANCE For Asian operators:
THALES Avionics Asia Pte Ltd.
21 Changi North Rise Singapore 498788
SINGAPORE For American operators:
THALES Avionics, Inc 140 Centennial Avenue PISCATAWAY Township, NJ 08854 USA 1