SB 45-71-5 Page 1 of 30 

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THIS SERVICE BULLETIN IS AVAILABLE AT: www.cic.bombardier.com Basic Issue: Feb 13/07 Refer to applicable government agency regulations and requi rements and make sure that the work described in this Service Bulletin is performed in compliance with manufacturer’s recommendations and/ or acceptable industry standards.

This document is proprietary to Bombardi er Inc. and/or its affiliates and may not be reproduced or copied in any form or by any means without the prior wr itten consent of Bombardier Inc. and/or its affiliates. © 2007, Bombardier Inc. All rights reserved. Challenger*, Global Express*, Learjet* , are Trademarks of Bombardier Inc. 

### LEARJET 45 RECOMMENDED SB 45-71-5 

# SERVICE BULLETIN

If you cannot do all steps in this service bulletin because of an STC change to the aircraft, speak to the STC holder or the regional Federal Aviation Administration (FAA) office for information and disposition.

POWER PLANT - MODIFICATION OF THE LEFT AND RIGHT ENGINE WIRE ROUTING AND CLAMPING
1. Planning Information
A. Effectivity (1) Learjet 45-005 thru 45-319, and 45-321.

B. Reason (1) The purpose of this modification is to improv e the routing and clamping of the left and right engine alternator wire harnesses and the starter/generato r wire bundles to prevent chafing. An inspection to reveal possible chafing betw een the left engine hydraulic and fuel tubes is also necessary.

NOTE: Aircraft that have previously installed the left engine hydraulic pump case drain tube part number 4529101090-005 tube per Learjet Service Bulletin A45-29-15 are not required to replace the tube as in structed in this service bulletin. **CONTACT INFORMATION DISTRIBUTION**  **DATE**
Business Aircraft Learjet Inc. MS 53 P.O. Box 7707 Wichita, Kansas 67277-7707 (316) 946-2421 February 13, 2007SB 45-71-5 Page 2 of 30 

### LEARJET 45 SERVICE BULLETIN

THIS SERVICE BULLETIN IS AVAILABLE AT: www.cic.bombardier.com Basic Issue: Feb 13/07 C. Description (1) This service bulletin provides instructions to c hange the routing and clamping configuration of the engine and alternator wire harnesses, and the starte r/generator wire bundles. Instructions are also provided to inspect specific hydr aulic tubes located within the left engine nacelle for chafing between the adjacent fuel tubes, to replace tubes damaged beyond acceptable limits, and to secure the hydraulic tubes with additional clamps.
D. Compliance (1) Recommended - Bombardier Learjet Inc. recommend s that you do this serv ice bulletin in less than 300 flight hours from the initial dist ribution date of this service bulletin.
E. Approval (1) The Federal Aviation Administration (FAA) has approved the technical content in this publication that has an effect on the airplane type design. (2) The European Aviation Safety Agency (EASA) has accepted the technical content in this publication that has an effect on the airplane type design.
F. Labor Hours - Estimated Accomplishment Time

NOTE: These labor hours are an estimate and ar e for planning purposes only. Facility and personnel capabilities may caus e the labor ho urs to change.

G. Expense Coverage (1) Labor Coverage (a) Aircraft in the new aircraft warranty period , labor coverage is provided.
NOTE: For labor coverage to apply, you must do this service bulletin at a Bombardier Business Aviation Service Fa cility or at a Bombardier Learjet Authorized Service Facility. You must do this service bulleti n within 24 months from the release date of this service bulletin, basic issue, February 13, 2007.

(b) Aircraft out of the new ai rcraft warranty period , no labor coverage is provided. **-801 KIT**  **-802 KIT**  **TASK**
1.0 1.0 Labor hours to gain access.
3.5 4.0 Labor hours to do th e aircraft modification.
1.5 1.5 Labor hours to do a func tional test/operational check.
1.0 1.0 Labor hours to return the aircraft to airworthy status.
7.0 7.5 Total Labor HoursSB 45-71-5 Page 3 of 30 

### LEARJET 45 SERVICE BULLETIN

THIS SERVICE BULLETIN IS AVAILABLE AT: www.cic.bombardier.com Basic Issue: Feb 13/07 (2) Material Coverage (a) Aircraft in the new aircraft warranty period , material covera ge is provided.
NOTE: For material coverage to apply, this service bulletin kit must be placed on order from Bombardier within 12 months from the basic issu e distribution date of this service bulletin, February 13, 2007.
(b) Aircraft out of the new ai rcraft warranty period , no material coverage is provided. (3) Smart Parts (a) For those aircraft in the new aircraft warranty peri od at the time of serv ice bulletin distribution
, Smart Parts Plus does not pay for the kits at any time. (b) For those aircraft out of the new aircraft warranty period at the time of service bulletin distribution , Smart Parts Plus pays for the ki ts for up to 12 months from the service bulletin distribution date.
H. Material Required to do this Service Bulletin

NOTE: The above price can change.

To place an order for these kits, please call Bombardier Aerospace Parts Logistics Business Aircraft Customer Service at 1-888- 222-1428 in North America or 1-316-946-2377 outside North Americ a for information.

Refer to paragraph 3.A. to know which kit is necessary.

(1) Other materials/parts necessary to do this service bulletin.

NOTE: To place an order for these materials, please call Bombardier Aerospace Parts Logistics Business Aircraft Customer Service at 1-888-222-1428 in North America or 1-316- 946-2377 outside North America for information. **PART NUMBER QTY NOMENCLATURE PRICING** 4571530001-801 1 Service Bulletin Kit $108.00 4571530001-802 1 Service Bulletin Kit $80.45

**PART NUMBER NAME QTY MANUFACTURER** 361 Tape-Fiberglass 1 Roll 3-M Company, St. Paul, MN
MIL-T-43435E or equivalent String Tie As Required Commercially Available

Red GLPT Insulating Varnish As Required Commercially AvailableSB 45-71-5 Page 4 of 30 

### LEARJET 45 SERVICE BULLETIN

THIS SERVICE BULLETIN IS AVAILABLE AT: www.cic.bombardier.com Basic Issue: Feb 13/07 (2) Other materials/parts that may be necessary to do this service bulletin based on inspection results.

NOTE: * Required on aircraft that have not installed the 4529101090-005 left engine hydraulic pump case drain tube per Learjet Service Bulletin A45-29-15.

To place an order for these parts, please call Bombardier Aerospace Parts Logistics Business Aircraft Customer Service at 1-888-222-1428 in North America or 1-316- 946-2377 outside North America for information.

I. Tooling (1) None.
J. Weight and Balance (1) Change in basic weight and moment.

K. References (1) Learjet Maintenance Manual, Chapters 12, 20, 24, 28, 29, 71 and 80. **PART NUMBER QTY NOMENCLATURE EFFECTIVITY** 4529101067-001 1 Tube-Hydraulic (Pressure) 45-005 thru 45-267

4529101071-001 1 Tube-Hydraulic (Pump Supply) 45-005 thru 45-267

4529101075-001 1 Tube-Hydraulic (Pump Case Drain) 45-006 thru 45-076

4529101075-005 1 Tube-Hydraulic (Pump Case Drain) 45-005, 45-077 thru 45-267 4529101090-005 1 Tube-Hydraulic (Pump Case Drain) All * See Note Below
4573100000V13-001 1 Tube-Fuel (Motive Flow) 45-005 thru 45-267

4573100000V12-001 1 Tube-Fuel (Supply) 45-005 thru 45-267

**CHANGE IN BASIC WEIGHT CHANGE IN BASIC MOMENT** Plus (+) 1.17 pounds Plus (+) 608.4 inch-poundsSB 45-71-5 Page 5 of 30 

### LEARJET 45 SERVICE BULLETIN

THIS SERVICE BULLETIN IS AVAILABLE AT: www.cic.bombardier.com Basic Issue: Feb 13/07 2. Accomplishment Instructions

A. Gain Access (1) Disconnect the external electrical power and the main and emergency batteries from aircraft. (Refer to Learjet Maintenance Manual, Chapter 24.) (2) On aircraft 45-005 thru 45-274, remove the left and right engine upper and lower engine cowling. (Refer to Learjet Maintenance Manual, Chapter 71.) (3) On aircraft 45-275 thru 45-319 and 45-321, remove the left engine lowe r cowling. (Refer to Learjet Maintenance Manual, Chapter 71.)

B. Modification of Aircraft (1) On aircraft 45-005 thru 45-274, disconnect the left engine starter/generator wire bundles and remove the clamping as follows; (a) Disconnect starter/generator wire bundles (G1-B "+" and G1-E "-") from the starter/generator. (b) Disconnect engine wire harnesses (G1 and G1P1) from the starter/generator. (c) Disconnect alternator wire harness (G3P2) from the alternator. (d) Remove the existing clamping configuration of the starter/ge nerator wire bundles at nacelle station 180.00. (See Figure 1, View C-C.) (2) On aircraft that have not installed the 4529101090-005 left engine hydraulic pump case drain tube per Learjet Service Bu lletin No. A45-29-15, replace the 4529101090-001 left engine hydraulic pump case drain tube with a new 4529101090-005 tube. (See Figure 1, View L-L.) (3) On aircraft 45-005 thru 45-267, inspect the remaining hydraulic tubing on the left engine for clearance as follows; (a) Inspect the hydraulic tubing for clearance and chafing in the area shown. (See Figure 1, View K-K and Detail M.) (Refer to Learjet Maintenance Manual, Chapter 20 for damage tolerance on tubing.)

CAUTION: REVIEW THE SAFETY PRACTIC ES WHEN YOU WORK WITH OR AROUND THE AIRCRAFT HYDRAULIC SYSTEM. (REFER TO LEARJET MAINTENANCE MANUAL, CHAPTER 29.)

(b) On aircraft where chafing on the hydraulic tubes is beyond acceptable limits, do as follows; 1) Depressurize the hydraulic system. (Refer to Learjet Maintenance Manual, Chapter 12.) 2) Replace the chafed tubing. (c) Install additional clamping to the hydraulic tubing. (See Figure 1, Detail M.) (d) Inspect the adjacent fuel tubing for interference with the hydraulic tubing.

CAUTION: REVIEW THE SAFETY PRACTIC ES WHEN YOU WORK WITH OR AROUND THE AIRCRAFT FUEL SYSTEM. (REFER TO LEARJET MAINTENANCE MANUAL, CHAPTER 28.)

(e) On aircraft where interference between the fu el tubing and hydraulic tubing is found, replace the fuel tubing as noted and shown. (See Figure 1, View K-K.) (4) On aircraft 45-268 thru 45-319 and 45-321, inspect the remaining left engine hydraulic tubing for clearance with adjacent tubing, structure, and other components.SB 45-71-5 Page 6 of 30 

### LEARJET 45 SERVICE BULLETIN

THIS SERVICE BULLETIN IS AVAILABLE AT: www.cic.bombardier.com Basic Issue: Feb 13/07 (5) On aircraft 45-005 thru 45-274, change the routing and clamping of the left engine starter/generator wire bundles as follows; (a) Route the starter/generator wire bundles and the engine wire harness (G1 and G1P1) between the engine and the hydraulic pump. (See Figure 1, Detail B.)

NOTE: The starter/generator wire bundles should be next to the engine and inboard of the thrust reverser hydraulic plumbing coming through nacelle station 180.00.

(b) On aircraft 45-005 thru 45-049, make sure the length of the starter/generator wire bundles is sufficient to be routed and clamped as shown. Se e Figure 1, View A-A, Detail D, Detail E, View F-F and View G-G.) (c) On aircraft 45-005 thru 45-049 where the length of the starter/generator wire bundles is sufficient, and aircraft 45-050 thru 45-274, route and clamp the starter/generator wire bundles as shown. (See Figure 1, View A-A, Detail D, Detail E, View F-F and View G-G.) (d) On aircraft 45-005 thru 45-049 where the length of the starter/generator wire bundles is not sufficient, replace clamps MS21919WH12 with MS21 919WCH11 at existing clamp locations that secure the positive (+) starter/generator bundle (G1-B). (e) Route and clamp the starter/generator wire bund les at nacelle station 186.00 as shown. (See Figure 1, View H-H and View J-J.) (f) Individually wrap the starter/generator wire bundl es with MIL-I-22129 or equivalent spiral wrap as shown. (See Figure 1, Detail B and View C-C.)

NOTE: Make sure that the minimum clearance requirements are maintained between thespiral wrapped starter/generator wire bundles and adjacent tubing and components. (Refer to Learjet Maintenance Manual, Chapter 20 for clearance requirements.)

(g) Connect the starter/gen erator wire bundles (G1- B "+" and G1-E "-") to the starter/generator. (h) Starting immediately forward of nacelle statio n 186.00, apply MIL-I-22129 or equivalent spiral wrap to engine wire harnesses (G1 and G1P1), and alternator wire harness (G3P2) as shown. (See Figure 1, View H-H and View J-J.)

NOTE: At the location where alternator wire harness (G3P2) begins to route toward the alternator, discontinue spiral wrapping th e engine wire harnesses (G1 and G1P1). Continue the spiral wrap on alternator wire harness (G3P2) up to the alternator.

(i) Connect the engine wire harnesses (G1 and G1P1) to the starter/generator. (j) Use MIL-T-43435E or equivalent string tie to secure the spiral wrap to the harnesses. (6) On aircraft 45-005 thru 45-274, change the routing and clamping of the left engine alternator wire harnesses (G3P1 and G3P2) as follows; (a) Route alternator wire harness (G3P2) along the starter/generator wire bundles and secure to starter/generator wire bundles as shown. (See Figure 1, View C-C, View H-H and View J-J.) (b) Connect alternator wire harness (G3P2) to the alternator. (c) Disconnect alternator wire harness (G3P1) from the alternator. (d) Route the alternator wire harness (G3P1) as shown. (See Figure 1, View K-K.)SB 45-71-5 Page 7 of 30 

### LEARJET 45 SERVICE BULLETIN

THIS SERVICE BULLETIN IS AVAILABLE AT: www.cic.bombardier.com Basic Issue: Feb 13/07 (e) Wrap alternator wire harness (G3P1) with fiberglass tape at bracket assemblies as shown. (See Figure 1, View K-K.) (f) Install new clamping configuration on alternator wire harness (G3P1) as shown. (See Figure 1, View K-K.) (g) Connect alternator wire harness (G3P1) to the alternator. (h) Apply MIL-I-22129 spiral wrap or equivalent around alternator wire harness (G3P1) as necessary. (See Figure 1, View K-K.)

NOTE: Make sure that the minimum clearance requirements are maintained between the spiral wrapped alternator wire harnesses and adjacent tubing and components. (Refer to Learjet Maintenance Manual, Chapter 20 for clearance requirements.)

(i) Use MIL-T-43435E or equivalent string tie to secure the spiral wrap to the harnesses. (7) On aircraft 45-005 thru 45-274, change the routing and clamping configuration of the right engine starter/generator wire bundles and alternator wire harnesses as follows; (a) Disconnect alternator wire harnesses (G3P1 and G3P2) from the alternator. (b) Remove the clamps and attaching hardware th at support alternator wire harnesses (G3P1 and G3P2) to nacelle station 180.00. (See Figure 2, View C-C.) (c) Disconnect the engine wire harness (G 1 and G1P1) from the starter/generator. (d) On aircraft 45-005 thru 45-048, install the new clamping confi guration as shown. (See Figure 2, View D-D, View E-E, View G-G, and View H-H.) (e) On aircraft 45-049 thru 45-273, install the new clamping confi guration as shown, (See Figure 2, View D-D, View E-E, View F-F, View G-G, View H-H and View J-J.) (f) Route alternator wire harnesses (G3P1 and G3P2) and engine wire harnesses (G1 and G1P1) as shown. (See Figure 2, Detail B and View C-C.)

NOTE: Wire harnesses must be routed between the engine and the hydraulic pump.

(g) Apply MIL-I-22129 spiral wrap or equivalent to the alternator wire harnesses (G3P1 and G3P2) and engine wire harnesses (G1 and G1P1) as shown. (See Figure 2, Detail B and View C-C.)

NOTE: Make sure that the minimum clearance requirements are maintained between the spiral wrapped alternator and engine wire harnesses and adjacent tubing and components. (Refer to Learjet Maint enance Manual, Chapter 20 for clearance requirements.)

(h) Install new clamping configuration on alternator wire harness (G3P1) as shown. (See Figure 2, View C-C.) (i) Use MIL-T-43435E or equivalent string tie to secure the spiral wrap to the harnesses. (j) Route alternator wire harness (G3P2) along alternator wire harness (G3P1) and tie together with MIL-T-43435E string tie or equivalent. Apply insulating varnish to secure string ties. (See Figure 2, View C-C.) (k) Connect alternator wire harnesses (G3P1 and G3P2) to the alternator.SB 45-71-5 Page 8 of 30 

### LEARJET 45 SERVICE BULLETIN

THIS SERVICE BULLETIN IS AVAILABLE AT: www.cic.bombardier.com Basic Issue: Feb 13/07 (l) Connect engine wire harnesses (G1 and G1P1) to the starter/generator.

NOTE: It is permissible to fold and tie engine wire harness (G1P1) as necessary to take up excessive length.

(8) On aircraft 45-005 thru 45-274, do an inspection of the clearances between the wire harnesses and the hydraulic and fuel tubing on the left and right engines. (Refer to Learjet Maintenance Manual, Chapter 20.) (9) On aircraft 45-275 thru 45-319 and 45-321, do an inspection of the clearances between the wireharnesses and the hydraulic and fuel tubing on the left engine. (Refer to Learjet Maintenance Manual, Chapter 20.) (10) On aircraft that replaced hy draulic tubes due to chafing, service the hydraulic system reservoir. (Refer to Learjet Maintenance Manual, Chapter 12.)
C. Functional Test/Operational Check (1) Connect the main and emergency batteries to the aircraft. (Refer to Learjet Maintenance Manual, Chapter 24.) (2) Connect external electrical power. (3) Do the Automatic Engine Start for the left and ri ght engines. (Refer to Learjet Maintenance Manual, Chapter 80.) (4) Do the Generator Voltage Adjustment and Current Test. (Refer to Learjet Maintenance Manual, Chapter 24.) (5) On aircraft that replaced hydraulic or fuel tubes, check new tubes for leaks around fittings.
D. Return Aircraft to Airworthy Status (1) Install the left and right engine upper and lowe r engine cowling. (Refer to Learjet Maintenance Manual, Chapter 71.)
E. Compliance Response Form (1) Complete the compliance response form. (2) Send the compliance response form to Learjet Inc. as soon as possible.

F. Aircraft Maintenance Records (1) Complete the Aircraft Maintenance Records.

NOTE: To complete the aircraft maintenance records, refer to FAR/CFR 43.9.

3. Material Information
A. Parts Required (1) The 4571530001-801 Kit is for the left engine and contains the parts that follow. **PART NUMBER QTY NOMENCLATURE**
MS9592-014 1 Bracket
MS9592-387 1 Bracket MS21919WCH4 2 ClampSB 45-71-5 Page 9 of 30 

### LEARJET 45 SERVICE BULLETIN

THIS SERVICE BULLETIN IS AVAILABLE AT: www.cic.bombardier.com Basic Issue: Feb 13/07 NOTE: Some hardware comes in pre-packaged quantities. When that occurs, the quantity in the kit will be more than the qu antity in the parts list. MS21919WCH5 2 Clamp MS21919WCH10 1 Clamp MS21919WCH11 5 Clamp MS85052/3-6 1 Clamp MS85052/3-8 1 Clamp
NAS1802-3-7 1 Screw
NAS1802-3-8 4 Screw
MS21042-3 4 Nut
NAS1149C0316R 1 Washer SWT1/2Natural 15 ft. Spiral Wrap (MIL-I-22129) **PART NUMBER QTY NOMENCLATURE**SB 45-71-5 Page 10 of 30 

### LEARJET 45 SERVICE BULLETIN

THIS SERVICE BULLETIN IS AVAILABLE AT: www.cic.bombardier.com Basic Issue: Feb 13/07 (2) The 4571530001-802 Kit is for the right engine and contains the parts that follow.

NOTE: Some hardware comes in pre-packaged quantities. When that occurs, the quantity in the kit will be more than the qu antity in the parts list.

B. Parts Removed List **PART NUMBER QTY NOMENCLATURE**
MS9592-010 3 Bracket
MS9592-022 1 Bracket
AN743-C12 1 Bracket MS21919WCH5 1 Clamp MS21919WCH9 3 Clamp MS21919WCH11 4 Clamp
NAS1802-3-8 3 Screw
MS21042-3 3 Nut SWT1/2Natural 15 ft. Spiral Wrap (MIL-I-22129)

**PART NUMBER QTY NOMENCLATURE DISPOSITION EFFECTIVITY** AN743-12 1 Bracket Destroy 45-006, 45-008 thru 45-023 (RH Engine) MS9592-010 2 Bracket Destroy 45-005 thru 45-274 (Both Engines) MS9592-010 1 Bracket Destroy 45-005 thru 45-049 (LH Engine) MS21919WH4 2 Clamp Destroy 45-005 thru 45-274 (RH Engine) MS21919WH5 1 Clamp Destroy 45-005, 45-007, 45-024 thru 45-048 (RH Engine) MS21919WH5 2 Clamp Destroy 45-005 thru 45-274 (RH Engine) MS21919WH7 2 Clamp Destroy 45-049 thru 45-274 (RH Engine) MS21919WH8 1 Clamp Destroy 45-005, 45-007, 45-024 thru 45-048 (RH Engine) MS21919WH8 2 Clamp Destroy 45-049 thru 45-274 (RH Engine)SB 45-71-5 Page 11 of 30 

### LEARJET 45 SERVICE BULLETIN

THIS SERVICE BULLETIN IS AVAILABLE AT: www.cic.bombardier.com Basic Issue: Feb 13/07

MS21919WH10 1 Clamp Destroy 45-005 thru 45-274 (LH Engine) MS21919WH12 4 Clamp Destroy 45-005 thru 45-274 (RH Engine) MS21919WH12 5 Clamp Destroy 45-005 thru 45-274 (LH Engine) NAS1802-3-8 2 Screw Destroy 45-005 thru 45-274 (RH Engine) NAS1802-3-9 2 Screw Destroy 45-005 thru 45-274 (LH Engine) NAS43DD3-64FC 1 Spacer Destroy 45-005 thru 45-274 (LH Engine) MS21042-3 1 Nut Destroy 45-005 thru 45-274 (LH Engine) 4529101067-001 1 Tube-Hydraulic (Pressure) Destroy 45-005 thru 45-267 * See Note Below (LH Engine) 4529101071-001 1 Tube-Hydraulic (Pump Supply) Destroy 45-005 thru 45-267 * See Note Below (LH Engine) 4529101075-001 1 Tube-Hydraulic (Pump Case Drain) Destroy 45-006 thru 45-076 * See Note Below (LH Engine) 4529101075-005 1 Tube-Hydraulic (Pump Case Drain) Destroy 45-005, 45-077 thru 45-267 * See Note Below (LH Engine) 4529101090-001 1 Tube-Hydraulic (Pump Case Drain) Destroy All * * * See Note Below (LH Engine)
4528200044-001 1 Tube-Fuel (Motive Flow) Destroy 45-005 thru 45-267 * * See Note Below (LH Engine) 4573100005V1-005 1 Tube-Fuel (Supply) Destroy When Installed * * See Note Below (LH Engine) **PART NUMBER QTY NOMENCLATURE DISPOSITION EFFECTIVITY**SB 45-71-5 Page 12 of 30 

### LEARJET 45 SERVICE BULLETIN

THIS SERVICE BULLETIN IS AVAILABLE AT: www.cic.bombardier.com Basic Issue: Feb 13/07 NOTE: * On aircraft 45-005 thru 45-267, replace hydraulic tubes as necessary that have chafing beyond acceptable limits.

* * On aircraft 45-005 thru 45-267, replace fuel tubes as necessary to correct or prevent an interference condition with the adjacent hydraulic tubes.

* * * Aircraft that have not installed the 4529101090-005 left engine hydraulic pump case drain tube per Learjet Service Bulletin No. A45-29-15. 4573100005-009 1 Tube-Fuel (Supply) Destroy When Installed * * See Note Below (LH Engine) 4573100000V5-001 1 Tube-Fuel (Supply) Destroy When Installed * * See Note Below (LH Engine) 4573100000V8-001 1 Tube-Fuel (Supply) Destroy When Installed * * See Note Below (LH Engine) 4573100005-013 1 Tube-Fuel (Supply) Destroy When Installed * * See Note Below (LH Engine) **PART NUMBER QTY NOMENCLATURE DISPOSITION EFFECTIVITY**SB 45-71-5 Page 13 of 30 

### LEARJET 45 SERVICE BULLETIN

THIS SERVICE BULLETIN IS AVAILABLE AT: www.cic.bombardier.com Basic Issue: Feb 13/07 Left Engine Wire Harness Routing and Clamping Figure 1 (Sheet 1 of 9)SB 45-71-5 Page 14 of 30 

### LEARJET 45 SERVICE BULLETIN

THIS SERVICE BULLETIN IS AVAILABLE AT: www.cic.bombardier.com Basic Issue: Feb 13/07 Left Engine Wire Harness Routing and Clamping Figure 1 (Sheet 2 of 9)SB 45-71-5 Page 15 of 30 

### LEARJET 45 SERVICE BULLETIN

THIS SERVICE BULLETIN IS AVAILABLE AT: www.cic.bombardier.com Basic Issue: Feb 13/07 Left Engine Wire Harness Routing and Clamping Figure 1 (Sheet 3 of 9)SB 45-71-5 Page 16 of 30 

### LEARJET 45 SERVICE BULLETIN

THIS SERVICE BULLETIN IS AVAILABLE AT: www.cic.bombardier.com Basic Issue: Feb 13/07 Left Engine Wire Harness Routing and Clamping Figure 1 (Sheet 4 of 9)SB 45-71-5 Page 17 of 30 

### LEARJET 45 SERVICE BULLETIN

THIS SERVICE BULLETIN IS AVAILABLE AT: www.cic.bombardier.com Basic Issue: Feb 13/07 Left Engine Wire Harness Routing and Clamping Figure 1 (Sheet 5 of 9)SB 45-71-5 Page 18 of 30 

### LEARJET 45 SERVICE BULLETIN

THIS SERVICE BULLETIN IS AVAILABLE AT: www.cic.bombardier.com Basic Issue: Feb 13/07 Left Engine Wire Harness Routing and Clamping Figure 1 (Sheet 6 of 9)SB 45-71-5 Page 19 of 30 

### LEARJET 45 SERVICE BULLETIN

THIS SERVICE BULLETIN IS AVAILABLE AT: www.cic.bombardier.com Basic Issue: Feb 13/07 Left Engine Wire Harness Routing and Clamping Figure 1 (Sheet 7 of 9)SB 45-71-5 Page 20 of 30 

### LEARJET 45 SERVICE BULLETIN

THIS SERVICE BULLETIN IS AVAILABLE AT: www.cic.bombardier.com Basic Issue: Feb 13/07 Left Engine Wire Harness Routing and Clamping Figure 1 (Sheet 8 of 9)SB 45-71-5 Page 21 of 30 

### LEARJET 45 SERVICE BULLETIN

THIS SERVICE BULLETIN IS AVAILABLE AT: www.cic.bombardier.com Basic Issue: Feb 13/07 Left Engine Wire Harness Routing and Clamping Figure 1 (Sheet 9 of 9)SB 45-71-5 Page 22 of 30 

### LEARJET 45 SERVICE BULLETIN

THIS SERVICE BULLETIN IS AVAILABLE AT: www.cic.bombardier.com Basic Issue: Feb 13/07 Right Engine Wire Harness Routing and Clamping Figure 2 (Sheet 1 of 9)SB 45-71-5 Page 23 of 30 

### LEARJET 45 SERVICE BULLETIN

THIS SERVICE BULLETIN IS AVAILABLE AT: www.cic.bombardier.com Basic Issue: Feb 13/07 Right Engine Wire Harness Routing and Clamping Figure 2 (Sheet 2 of 9)SB 45-71-5 Page 24 of 30 

### LEARJET 45 SERVICE BULLETIN

THIS SERVICE BULLETIN IS AVAILABLE AT: www.cic.bombardier.com Basic Issue: Feb 13/07 Right Engine Wire Harness Routing and Clamping Figure 2 (Sheet 3 of 9)SB 45-71-5 Page 25 of 30 

### LEARJET 45 SERVICE BULLETIN

THIS SERVICE BULLETIN IS AVAILABLE AT: www.cic.bombardier.com Basic Issue: Feb 13/07 Right Engine Wire Harness Routing and Clamping Figure 2 (Sheet 4 of 9)SB 45-71-5 Page 26 of 30 

### LEARJET 45 SERVICE BULLETIN

THIS SERVICE BULLETIN IS AVAILABLE AT: www.cic.bombardier.com Basic Issue: Feb 13/07 Right Engine Wire Harness Routing and Clamping Figure 2 (Sheet 5 of 9)SB 45-71-5 Page 27 of 30 

### LEARJET 45 SERVICE BULLETIN

THIS SERVICE BULLETIN IS AVAILABLE AT: www.cic.bombardier.com Basic Issue: Feb 13/07 Right Engine Wire Harness Routing and Clamping Figure 2 (Sheet 6 of 9)SB 45-71-5 Page 28 of 30 

### LEARJET 45 SERVICE BULLETIN

THIS SERVICE BULLETIN IS AVAILABLE AT: www.cic.bombardier.com Basic Issue: Feb 13/07 Right Engine Wire Harness Routing and Clamping Figure 2 (Sheet 7 of 9)SB 45-71-5 Page 29 of 30 

### LEARJET 45 SERVICE BULLETIN

THIS SERVICE BULLETIN IS AVAILABLE AT: www.cic.bombardier.com Basic Issue: Feb 13/07 Right Engine Wire Harness Routing and Clamping Figure 2 (Sheet 8 of 9)SB 45-71-5 Page 30 of 30 

### LEARJET 45 SERVICE BULLETIN

THIS SERVICE BULLETIN IS AVAILABLE AT: www.cic.bombardier.com Basic Issue: Feb 13/07 Right Engine Wire Harness Routing and Clamping Figure 2 (Sheet 9 of 9)

## SERVICE BULLETIN COMPLIANCE RESPONSE

It is necessary that Bombardier Learjet re cord aircraft having complied with this Service Bulletin. Please fill in the Se rvice Bulletin and aircraft information below, sign and date the form in the space provided, fold on dotted lines, seal with tape, and mail completed form to Bombardier Learjet Maintenance Engineering. If mailed within the United States, this form may be mailed to Bombardier Learjet Maintenance Engineering using business reply mail (see reverse). This form may be faxed or e-mailed if preferred. (See mailing information provided.) WARRANTY - Completion of this response form is required in order to process the warranty claim. Therefor e, if a warranty allowance is provided in the Service Bulletin, return a copy of this form with the warranty claim. SMART PARTS - Completion of this response form is required in order to remain, enroll, or re-enroll in the Smart Parts Program. 

# b

Mailing Information:

Bombardier Learjet Maintenance Engineering (MS #78) (FAX 316 946-2305) fracas_usa@aero.bombardier.com Customer Support Learjet, Inc.

Service Bulletin Informati on Aircraft Information
Service Bulletin No. 45-71-5 Model Rev No. Basic Date February 13, 2007 Serial No. Service Facility Information Flight Hours Facility Incorporating Bulletin Landings

Compliance Information The above referenced Service Bulletin was complied with on the re ferenced serial number aircraft at the listed aircraft flight hours/landings:

Actual hours to accomplish Service Bulletin: Access _______ SB _______ Test(s) _______ Restore _______

Signature Title Date

Comments

# SERVICE BULLETIN EVALUATION SHEET

YOUR COMMENTS WILL HELP US IMPROVE OUR SERVICE BULLETINS 

# b

SERVICE BULLETIN 45-71-5 REVISION: Basic DATED: February 13, 2007 TITLE: 

### Modification of the Left and Right Engine Wire Routing and Clamping

LEARJET CONTACT INFORMATION TELEPHONE: (316) 946-2421 FACSIMILE: (316) 946-2002

HOW EASY IS THE BULLETIN TO UNDERSTAND? POOR FAIR GOOD VERY GOOD EXCELLENT

COMMENTS

DOES THE BULLETIN TELL YOU ALL YOU NEED TO KNOW ABOUT THE JOB? COMMENTS

DO YOU THINK THE BULLETIN CONVEYS THE BEST WAY TO DO THE JOB? COMMENTS

HOW REALISTIC ARE THE LABOR-HOUR ESTIMATES? COMMENTS

WHAT IS YOUR APPRECIATION OF THE ILLUSTRATION (S), FIGURE (S) AND/OR KIT DRAWING (S)? COMMENTS

Actual hours to accomplish Service Bulletin: Access _______ Modify _______ Test(s) _______ Restore _______

PLEASE SUPPLY THE FOLLOWING DATA: NAME:

OPERATOR: TELEPHONE: AIRCRAFT: FACSIMILE: UPON COMPLETION OF THE EVALUATION FORM, PLEA SE FAX TO (316) 946-2002 OR FOLD AND RETURN TO ADDRESS ON THE REVERSE SIDE.