# Bombardier Service Bulletin 215-3185

Copy: Revision 1 ("SB 215-3185 Rev 1"), 7 pages: PDF https://openairdocs.org/files/sha256/9e/23/9e237e1b79ab4ca3d1df72ad59723184b9c8dbd48b5c821d428098ca014310cf; text https://openairdocs.org/service-documents/bombardier/sb-215-3185/file/9e237e1b79ab.md. Rights: © Bombardier Inc. Filed by the FAA in regulations.gov docket FAA-2018-1070; AD 2019-08-12 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication.

## Details

- Manufacturer: [Bombardier](https://openairdocs.org/service-documents/bombardier.md)
- Type: Service bulletin (Service Bulletin)
- Number: 215-3185
- Latest revision known: 215-3185, Revision 1, dated January 28, 2014 (OpenAirDocs)
- Page: https://openairdocs.org/service-documents/bombardier/sb-215-3185

## ADs that cite it (1) (OpenAirDocs)

Newest first, with the revision each names, as OpenAirDocs read it from the AD's text.

- [AD 2019-08-12](https://openairdocs.org/ad/2019-08-12.md), effective Jun 13, 2019: Revision 1

Also cited in [1 proposed AD](https://openairdocs.org/service-documents/bombardier/sb-215-3185/proposed.md).

## Text (7 pages)

Rights: © Bombardier Inc. Filed by the FAA in regulations.gov docket FAA-2018-1070; AD 2019-08-12 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication. Each page's text from the PDF; open the PDF at a page with #page=N.

### Page 1

Service Bulletin 215-3185Jan 28/14
ATA Ref: 27−10
27−51Page 1 of 1
MODEL CL-215-6B11
REVISION TRANSMITTAL SHEET
FLIGHT CONTROLS
INSPECTION OF THE AILERON CONTROL SYSTEM CABLES AND 
FLAP INTERCONNECT SYSTEM CABLES
Service Bulletin No.: 215-3185 Date of Original Issue: May 13/13
Revision No.: 1 Date of Issue: Jan 28/14
NOTES: 1. NO RETROACTIVE ACTION IS REQUIRED ON AIRCRAFT
MODIFIED TO THE PREVIOUS ISSUE OF THIS SERVICE
BULLETIN.
NOTES: 1. FOR RETROACTIVE ACTION APPLICABLE TO AIRCRAFT
ALREADY MODIFIED IN ACCORDANCE WITH THE ORIGINAL
ISSUE OF THIS SERVICE BULLETIN, REFER TO THE BOX ON
PAGE1 OF THIS SERVICE BULLETIN.
2. This revision supersedes the previous issue of this Service Bulletin.
3. Black bars in the left margin of this Service Bulletin and the details on
this Revision Transmittal Sheet refer to changes made since the
previous issue.
This revision is issued to:
1. Revise the Service Bulletin title to include the “flap interconnect system cables “
2. Revise the compliance statement to inform operators that the repetitive 50 hour visual inspection
may be discontinued upon incorporating Part A and Part B of Service Bulletin 215 −3186.
3. Revise the reason statement to include the “flap interconnect system cables “ in Section
1.D. Reason.
4. Change the revision of Bombardier Aerospace Restriction and/or Special Instruction (RSI)
C-3938, from Revision A to Revision C in Section 1.K. References.
5. Add instructions to inspect the flap interconnect system cables in Section 2.A.
6. Add Figure 2 showing the inspection area of the flap interconnect system cables.

### Page 2

Service Bulletin 215-3185
Rev. NC  May 13/13
Rev. 1  Jan 28/14
Page 1 of 5 ATA Ref: 27−10
27−50
MODEL CL-215-6B11
SERVICE BULLETIN
FLIGHT CONTROLS
INSPECTION OF THE AILERON CONTROL SYSTEM CABLES AND 
FLAP INTERCONNECT SYSTEM CABLES
1. Planning Information
A. Compliance
The visual  inspection described in this Service Bulletin is recommended and requires
repetitive action every 50 flight hours until Service Bulletin 215−3186 Part A and Part B has
been incorporated on the aircraft.
NOTE: This Service Bulletin is only applicable to aircraft in the condition as originally
delivered by Canadair and/or Bombardier Aerospace or as subsequently modified by
Canadair and/or Bombardier Aerospace Service Bulletin(s).  Prior to incorporation of
this Service Bulletin, the status of any related systems or structural modification(s)
introduced by Supplementary Type Approval (STA) or equivalent action must be
examined for compatibility with the modifications and test procedures (if applicable)
detailed in this Service Bulletin. 
B. Approval
The technical content of this Service Bulletin has been approved under the authority of the
Design Approval Organization No: DAO #93-Q-02.
C. Effectivity
CL-215-6B11 turboprop aircraft Serial Nos. 1085, 1086, 1093, 1094, 1098, 1099, 1100, 
and 1101.
D. Reason
The visual inspection described in this Service Bulletin is to ensure that there is no damage to
or disconnected aileron control system cables or flap interconnect system cables in the area of
the aileron power control unit.
E. Description
This Service Bulletin gives instructions to access the inspection area and perform the required
visual inspection.

### Page 3

MODEL CL-215-6B11
SERVICE BULLETIN
Service Bulletin 215-3185
Rev. NC  May 13/13
Rev. 1  Jan 28/14
Page 2 of 5 ATA Ref: 27−10
27−50
F. Manpower
We estimate that it will take 2 technician approximately 1 hour (2 hours total) to complete this
Service Bulletin.
G. Material Availability
This Service Bulletin contains no kit.
H. Tool Availability
No special tools or equipment are necessary.
I. Weight and Balance
Not affected.
J. Electrical Load Data
Not affected.
K. References
For Bombardier Aerospace Reference only:
(Not Supplied with Kit)
Bombardier Aerospace Restriction and/or Special Instruction (RSI) C-3938, Revision, C.
L. Publications Affected
PSP 392, Maintenance Manual, Chapter 27−10−00 and 27−50−00
PSP 394, Illustrated Parts Catalogue, Chapter 27−11−16 and  27−51−16.
M. Related Service Bulletins
215−3186 REPLACEMENT OF POWERED AILERON SYSTEM TEFLON /C0084 PARTS DUE TO 
EXCESS CHARGE OF FIBERGLASS
2. Accomplishment Instructions
NOTES: 1. For this inspection, it is assumed that standard maintenance and repair practices will
be applied in accordance with applicable Product Support Publications (PSP).
2. For parts location, refer to the PSP references as noted.
3. If any deviation exists, contact your Specialized and Amphibious Aircraft Technical
Representative for further instructions.

### Page 4

MODEL CL-215-6B11
SERVICE BULLETIN
Service Bulletin 215-3185
Rev. NC  May 13/13
Rev. 1  Jan 28/14
Page 3 of 5 ATA Ref: 27−10
27−50
A. Visual Inspection − Aileron Control Cables
(1) Verify that the aileron flight control system is in MANUAL mode.  Refer to PSP 392
Aircraft Maintenance Manual, Chapter 27−10−00 AILERON CONTROL SYSTEM −
DESCRIPTION AND OPERATION.
(2) Remove the access panels 320 −1, 320−2, 741−1, and 841−4  Refer to PSP 392, Chapter
6−51−00 ACCESS PANELS  − DESCRIPTION AND OPERATION.
(3) Remove the left and right aileron power control unit (PCU) cover assemblies.
Refer to Figure 1 and PSP 392, Chapter 27−10−00 Aileron Control System − Adjustment
Test, Figure 501
(4) Perform the visual inspection to the following control cables:
− Cables A9 and A12 from the output quadrant, extending towards the right aileron.
− Cables A5 and A8 from the output quadrant, extending towards the left aileron.
− Cables A2 and A4 interconnecting the left and right ailerons.
(a) Using suitable lighting check the cables for disconnection, broken wires, unusual
wear, or fraying cables.  Refer to PSP 292 Chapter 20−41−00 WIRE CABLE −
INSPECTION/CHECK for a detailed description of inspection technique.
(b) With a second technician assisting, operate the ailerons slowly through maximum
left and right travel.  Observe the control cables in the area of the aileron PCU and
check for contact with fairleads and pulley guards and possible damage.
(c) Check for evidence of fairlead or pulley guard debris which may have collected on
the fuselage roof skin and surrounding area.  Investigate further if such debris is
found.
Refer to Figure 2 and PSP 392, Chapter 27−50−00 Flap System − Adjustment Test
(5) Using suitable lighting , visually inspect the flap interconnect cables for disconnection,
broken wires, unusual wear, or fraying cables.
If any disconnected or damaged cables are found, contact your Specialized and Amphibious
Aircraft Technical Representative for further instructions.
(6) Install the left and right aileron power control unit (PCU) cover assemblies.
(7) Install the access panels 320 −1, 320−2, 741−1, and 841−4  Refer to PSP 392, Chapter
6−51−00 ACCESS PANELS  − DESCRIPTION AND OPERATION.
B. Recording
When this Service Bulletin is completed, make the entry in the aircraft log book and send back
the attached Incorporation Notice to Amphibious Aircraft Technical Publications.
3. Material Information
This Service Bulletin contains no kit.

### Page 5

MODEL CL-215-6B11
SERVICE BULLETIN
Service Bulletin 215-3185
Rev. NC  May 13/13
Rev. 1  Jan 28/14
Page 4 of 5 ATA Ref: 27−10
27−50
INSPECTION OF THE AILERON CONTROL SYSTEM CABLES
FIGURE 1
PCU COVER
ASSY (REF)
PCU COVER
ASSY (REF)
1
1
1
1
1
NOTE
1 Do the visual inspection of
control cables in this area.
1

### Page 6

MODEL CL-215-6B11
SERVICE BULLETIN
Service Bulletin 215-3185
Rev. NC  May 13/13
Rev. 1  Jan 28/14
Page 5 of 5 ATA Ref: 27−10
27−50
INSPECTION OF THE FLAP INTERCONNECT SYSTEM CABLES
FIGURE 2
PCU BEAM
ASSY (REF)
FLAP
INTERCONNECT
CABLES
SWITCH
OPERATING
ROD
RIGHT FLAP
ACTUATOR
LEFT FLAP
ACTUATOR
NOTE
1 Do the visual inspection of
control cables in this area.
1

### Page 7

Upon completion of Service Bulletin(s), please fill in and return by fax to:
Service Bulletin Number(s) Rev.
Aircraft Serial No.
Date of Incorporation
Aircraft Reg. No.
Technical Publication,
Dept. 649-DBF−(9)
Bombardier Aerospace
Specialized &
Amphibious Aircraft
St. Laurent, Quebec
Fax No.: (514) 855−7602
Airframe Hours
Remarks
Name
SERVICE BULLETIN
INCORPORATION NOTICE
REPLY FAX
Customer/Operation
(Please Print)

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