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Textron SB750-55-10 Service Bulletin
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Textron SB750-55-10 Service Bulletin

Textron SB750-55-10 Service Bulletin

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Citation
This sheet transmits Revision 4 to SB750-55-10, which:
A.
Removes Step 8 and Figure 2, Sheet 4 which both state to do a wiring modification that was already
done in production or by SB750-27-37 or SB750-27-25.
NOTE: This revision replaces the original issue and previous revisions to SB750-55-10 in their entirety.
REVISION COMPLIANCE
NO EFFECT. Airplanes previously modified by this service bulletin are not affected by this revision.
LOG OF REVISIONS
Original Issue
Revision 1
Revision 2
Revision 3
Revision 4
Original Issue - June 27, 2012
Revision 4 - April 7, 2016
Textron Aviation Customer Service, P.O. Box 7706, Wichita, KS 67277, U.S.A. 1-316-517-5800
SERVICE BULLETIN
REVISION TRANSMITTAL
COPYRIGHT © 2012
June 27, 2012
November 9, 2012
February 19, 2013
March 29, 2013
April 7, 2016
SB750-55-10
SB750-55-10
Page 1 of 1

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Summary of Contents for Textron SB750-55-10

  • Page 1 Removes Step 8 and Figure 2, Sheet 4 which both state to do a wiring modification that was already done in production or by SB750-27-37 or SB750-27-25. NOTE: This revision replaces the original issue and previous revisions to SB750-55-10 in their entirety. REVISION COMPLIANCE NO EFFECT.

  • Page 3: Service Bulletin

    Revision 4 - April 7, 2016 Page 1 of 18 Textron Aviation Customer Service, P.O. Box 7706, Wichita, KS 67277, U.S.A. 1-316-517-5800 This document contains technical data and is subject to U.S. export regulations. This information has been exported from the United States in accordance with export administration regulations.
  • Page 4 SERVICE BULLETIN Citation SB750-55-10 FLIGHT CREW OPERATIONS No Changes CONSUMABLE MATERIAL You must use the consumable materials that follow, or their equivalent, to complete this service bulletin. NAME NUMBER MANUFACTURER Type I Sealant U470637 Cessna Service Parts & Programs For sealing applications.
  • Page 5 SERVICE BULLETIN Citation SB750-55-10 ACCOMPLISHMENT INSTRUCTIONS Prepare the airplane for maintenance. Make sure that all switches are in the OFF/NORM position. Disconnect electrical power from the airplane. Disconnect the airplane batteries. Disconnect external electrical power. Attach maintenance warning tags to the batteries and external power receptacle that have "DO NOT CONNECT ELECTRICAL POWER - MAINTENANCE IN PROGRESS"...
  • Page 6 SERVICE BULLETIN Citation SB750-55-10 (Refer to Figure 1, Detail B.) Attach the two 6738022-7 HSTA Controller Assemblies to the 6738021-9 HSTA Filter Assembly with four MS27039-1-16 Screws into the top and bottom holes of the 6738022-7 HSTA Controller Assemblies as shown.
  • Page 7 SERVICE BULLETIN Citation SB750-55-10 (Refer to Figure 1, Detail A.) Install the debris cover. Install the two 6731037-X Panels to the HSTA. Clean old sealant from the two 6731037-X Panels. Apply sealant to the area that you just cleaned. Install the two 6731037-X Panels to the HSTA with kept screws.
  • Page 8 SERVICE BULLETIN Citation SB750-55-10 Remove maintenance warning tags to the batteries and external power receptacle that have "DO NOT CONNECT ELECTRICAL POWER - MAINTENANCE IN PROGRESS" written on them. Connect the batteries. Connect external electrical power. WARNING: Make sure personnel and equipment are clear of the horizontal stabilizer to avoid injury to personnel or damage to the airplane or equipment.
  • Page 9 SERVICE BULLETIN Citation SB750-55-10 Do the secondary trim, split trim switch functional test. Make sure circuit breaker SEC STAB TRIM CONT on the left circuit breaker panel is engaged. Find the secondary trim ON-OFF control switch (SC017) on the upper left portion of the center pedestal.
  • Page 10 SERVICE BULLETIN Citation SB750-55-10 Run the secondary trim system to full leading edge down position. Make sure the EICAS indicated position is 12 degrees, +0.6 or -0.6 degrees. Make sure the EICAS position indication is not amber. Run the trim system to full leading edge up position.
  • Page 11 SERVICE BULLETIN Citation SB750-55-10 Figure 1. Horizontal Stabilizer Trim Actuator Electronic Control Module Improvement (Sheet 1) SB750-55-10 Revision 4 - April 7, 2016 Page 9...
  • Page 12 SERVICE BULLETIN Citation SB750-55-10 Figure 1. Horizontal Stabilizer Trim Actuator Electronic Control Module Improvement (Sheet 2) SB750-55-10 Page 10 Revision 4 - April 7, 2016...
  • Page 13 SERVICE BULLETIN Citation SB750-55-10 Figure 2. Horizontal Stabilizer Trim Actuator Electronic Control Module Wiring Modification (Sheet 1) SB750-55-10 Revision 4 - April 7, 2016 Page 11...
  • Page 14 SERVICE BULLETIN Citation SB750-55-10 Figure 2. Horizontal Stabilizer Trim Actuator Electronic Control Module Wiring Modification (Sheet 2) SB750-55-10 Page 12 Revision 4 - April 7, 2016...
  • Page 15 SERVICE BULLETIN Citation SB750-55-10 Figure 2. Horizontal Stabilizer Trim Actuator Electronic Control Module Wiring Modification (Sheet 3) SB750-55-10 Revision 4 - April 7, 2016 Page 13...
  • Page 16 SERVICE BULLETIN Citation SB750-55-10 Figure 2. Horizontal Stabilizer Trim Actuator Electronic Control Module Wiring Modification (Sheet 4) SB750-55-10 Page 14 Revision 4 - April 7, 2016...
  • Page 17 SERVICE BULLETIN Citation SB750-55-10 MATERIAL INFORMATION Order the kit below to install this modification. NEW P/N QUAN- KEY WORD REFERENCE INSTRUCTIONS/ TITY DISPOSITION SB750-55-10-0 Kit, consisting of the following parts: AN3-21A Bolt D142-65 Sleeve D38999/26FB35SA Plug PV007, PV010 D38999/26FB35SN Plug...
  • Page 18 SERVICE BULLETIN Citation SB750-55-10 NEW P/N QUAN- KEY WORD REFERENCE INSTRUCTIONS/ TITY DISPOSITION 6738021-9 HSTA Filter Assembly 4214-0021-X Return to Cessna 6738022-7 HSTA Controller Assembly 6738023-3 HSTA Base Bracket Assembly 6738023-4 HSTA Cover Bracket Assembly SB750-55-10 Instructions Order the kit below to install this modification.
  • Page 19 SERVICE BULLETIN Citation SB750-55-10 NEW P/N QUAN- KEY WORD REFERENCE INSTRUCTIONS/ TITY DISPOSITION M81044/12-22-9 12 Inches Electrical Wire Marked AT020 7PV007 M81044/12-22-9 12 Inches Electrical Wire Marked AT021 8PV007 S4111-2A Nameplate Marked PV007 S4111-2A Nameplate Marked PV008 Nameplate Marked PV009...
  • Page 20 SERVICE BULLETIN Citation SB750-55-10 NEW P/N QUAN- KEY WORD REFERENCE INSTRUCTIONS/ TITY DISPOSITION TMS3/16-1.50 Sleeve Marked SJT024 3PV010 TMS3/16-1.50 Sleeve Marked TJT024 1PV010 TMS3/16-1.50 Sleeve Marked UJT024 6PV010 SB750-55-10 Page 18 Revision 4 - April 7, 2016...
  • Page 21 Revision 2 - April 7, 2016 Page 1 of 1 Textron Aviation Customer Service, P.O. Box 7706, Wichita, KS 67277, U.S.A. 1-316-517-5800 This document contains technical data and is subject to U.S. export regulations. This information has been exported from the United States in accordance with export administration regulations.