# Single Engi ne 

# Service Bu ll et in 

# I September 22, 2011

TITL E FUEL RETURN LINE INSPECT ION
EFF ECTIVITY Model Seria l N umbers 

# iii Cessna A Textron Com an

SB07-28-0 1

Revision 1


# I 172R 17281188 thru 17281572 172S 172S9491 thru 172S11073

REAS O N A report has been received that a part number 0500118-49 Fue l Return Line Assembly was found rubbing against the right steering tube assembly during fu ll rudder pedal actuation. DE SC RIPTION This service bulletin provides instructions to inspect the fuel return line for damage, and if necessary, repa ir or replace the line assembly. Non-compliance with this service bulletin could potentially result in a fuel leak

. CO MPLIANC E Mandatory: Shall be accomplished at the next scheduled maintenance or inspection not to exceed 100 hours of operation or 12 months, whichever occurs first. 

# INOTE: Compliance with SB07-28-01 Revision 1 is not required for airplanes in compliance with the Original Issue . A PPROV A L FAA approval has been obtai ned on technical data in this publication that affects ai rplane type design.
MANPOWER 0.8 man -hour for inspection If necessary, add 0.4 man-hour to repair the fuel return li ne assembly If necessary, add 0.3 man-hour to replace the fu el return line assembly
I Original Issue: June 18, 2007 Page 1 of 8

To obtai n satisfactory results, procedures specified in this publication must be accomplished in accordance with accepted methods and prevailing government regu lations. Cessna Aircraft Company cannot be res ponsible for th e quality of work perfonn ed in accomplish ing the require ments of this publication. Cessna Aircraft Company, Customer Service , P.O. Box 7706, Wichita, Kansas 67277, U.S .A

. (3 16) 517-5800, Facsim ile (316) 517-7271 www.cessnas upport

.com COPYRIGHT © 2007REFERENCES Model 172 Series 1996 and On Maintenance Manual NOTE : Make sure all publications used are complete and current. NOTE: This information shall be conside red an amendment to the Cessna Manufactu rer's Service/Maintenance Ma nual or Instruction s for Contin ued Airworth in ess and must be accomplish ed for ongoing airworthiness compl iance as required per 14 CFR Part 43.1 3.
OTHER PUBLICATIONS AFFECTED Model 172R & Model 172S Illustrated Parts Catalog NOTE: Make su re all pu blications used are complete and current.
MATERIAL PRICE AND AVAILABILITY 

# I

The part below is available from Cessna Service Parts and P rograms throug h an appropriate Cessna Single Engine Authorized Service Facility

.

Part Number 0500118-49

CREDIT INFORMATION Description Fue l Line Assembly Qty/Ai rplane 1 (if requ ired)



# I For airplane seri al numbers 17281391 thru 1728 1 572 and 172S1 0490 thru 172S11 073:

A labor allowance credit of 0.8 man-hour per airplane wi ll be provided to inspect the fuel return line assembly as described in this service bulleti n. If necessary, an add itio nal 0.4 man -hour per airplane will be provided to repair the fuel return li ne assembly or an additional 0.3 man-hour per airplane will be provid ed to replace the fuel return li ne assembly as describ ed in this service bulletin

. Freight will be credited at the most economical method unless pre-approved by Cessna

. For pre-approval contact Cessna Service Parts and Programs Warranty Administration at Telephone : 316-831-4296, Fax: 316-206
-2746 or E-ma il: cpd2claims@cess na .text ron.com. To receive cred it , the work must be com pleted and the Warranty Claim subm itted by a Cess na Single Engine Authorized Service Facility wi thin 30 calendar days of service bulletin compliance before th e cred it expirati on dates shown below. NOTE : Part number 0500118-49 fuel lines removed based on the inspection results of this service bulletin shall be held fo r field scrap per standard procedures. 

# I Domestic

. . . . . . . . . . . . . . . . . . . October 13, 2012 International

. . . . . . . . . . . . . . . . . October 13, 2012 Special Note to Single-Engine Authorized Service Facilities : When you complete the Wa rranty Claim, the labor allowance claimed shall be itemized for each above action completed. 

# I Page 2 SB07-28-01 Revi sion 1 September 22 , 2011

### ACCOMPLISHMENT INSTRU CTIONS WEIGHT AND BALANCE INFORMATION Negligible Material Information 

### The part below may be necessary: 

### DESCRIPTION OLD P /N NEW P /N 0500118-49 

### QUANTITY 

### 1 Fuel Line Assembly Same

Instru cti on s 

### 1. Prepare the airplane for maintenance. A. 

### Make su re that all switches are in the OFF/NORM position. B. Disconnect electrical power from the airplane. (1) Disconnect the airplane battery. (2) Disconnect external electrical power. 

### DISPOSITION Refer to Credit Information Section

.

C. Attach maintenance warning tags to the battery and external power receptacle that have 

### "DO NOT CONNECT ELECTRICAL POWER - MAINTENANCE IN PROGRESS " written on them. 

### WARNING: IF THE AIRPLANE HAS AMSAFE INFLATABLE RESTRAINTS , DO NOT REMOVE SEATS WITH THE SEAT BELTS BUCKLED OR THE ELECTRONICS MODULE ASSEMBLY (EMA) CONNECTED. DAMAGE TO THE SYSTEM CAN OCCUR AND AN ACCIDENTAL DEPLOYMENT OF THE SYSTEM CAN CAUSE INJURY . 2. Disarm the AMSAFE Inflatable Restraints. (Refer to the Model 172 Series 1996 and On Maintenance Manual, Chapter 25, Inflatable Restraint System- Maintenance Pra ctices.) 3. Get access to the 0500118-49 Fuel Return Line Assembly as follows: A. 

### Remove the copilot's seat from the seat track and move it aft and away from the work area. (Refer to the Model 172 Series 1996 and On Maintenance Manual, Chapter 25, Flight Compartment -Maintenance Practices.) 

### NOTE: You do not have to disconnect the seat belt from the copilot's seat. B

. Remove the access panel (230BT) and the rudder peda l close-out panel below the copilot's rudder pedal s. (Refer to the Model 172 Series 1996 and On Maintenance Manual, Chapter 6, Access/Inspection Plates - Descripti on and Operation

. ) 4. (Refer to Figure 1, View A-A.) Do an inspection of the 0500118-49 Fuel Return Line Assembly as follows: A. 

### With a flashlight and a mirror, do an inspection of the 0500118-49 Fuel Return Line Assembly for damage in the area of the MC0543022-2C Steering Tube Assembly. (1) If there is no damage to the 0500118-49 Fuel Return Line Ass embly, go to Step 9. (2) If there is damage to the 0500118-49 Fuel Return Line Assembly : (a) Pull the fuel shutoff valve hand le aft to shut off the fue l supply from the engine

. (b) Remove the 0500118-49 Fuel Return Line Assembly and install protective caps on the S2218-4 Check Valve, AN832-4 Union at the firewall, and each end of the 0500118-49 Fue l Return Line Assembly. 

# I SB07-28-01 Revision 1 September 22, 2011 Page 3

### (c) Make sure that there is only residual fuel leakage from the S2218-4 Check Valve after you disconnect the 0500118-49 Fuel Return Line Assembly. If there is more than residual fuel leakage, you must replace the S2218-4 Check Valve. (Refer to the Model 172 Series 1996 and On Maintenance Manual, Chapter 28, Fuel Storage and Distribution
- Maintenance Practices.) (d) Do an inspection of the damage on the 0500118-49 Fuel Return Line Assembly. 1 If there is damage in the area of a bend rad ius of the line, you must replace the 0500118-49 Fuel Return Line Assembly. Go to Step 5. 2 If there is damage on the line of a depth of more than 0.0035 inch, or you cannot measure the depth of the damage, you must replace the 0500118-49 Fuel Return Line Assembly. Go to Step 5. 3 If there is damage on the line of a depth of 0.0035 inch or less and it is not in the area of a bend radius of the line, repair the damage to the 0500118-49 Fuel Return Line Assembly with blending procedures in accordance with FAA Advisory Circular 43.13-1 B Acceptable Methods, Techniques, and Practices Aircraft Inspection and Repair

. Then go to Step 5. 5. (Refer to Figure 1, View A-A.) Install the 0500118-49 Fuel Return Line Assembly as follows: A. Remove the protective caps from the 0500118-49 Fuel Return Line Assembly , S2218-4 Check Valve, and AN832-4 Union at the firewall. B. Hand tighten the 8-nuts at the two ends ofthe 0500118-49 Fuel Return Line Assembly. C. Put the 0500118-49 Fuel Return Line Assembly in the position that gives correct clearance between the airplane structure and the MC0543022-2C Steering Tube Assembly when the rudder pedals and nosewheel move through the full left and right positions. D. Turn the nosewheel with a tow bar and move the copilot's rudder peda ls at the same time while you look at the MC0543022-2C Steering Tube Assembly as it moves through its full range of motion. Make sure that the MC0543022-2C Steering Tube Assembly does not touch the 0500118-49 Fuel Return Line Assembly or the airplane structure. E

. Hold the 0500118-49 Fuel Return Line Assembly in the correct position while you torque the 8
- nuts to 120 inch-pounds, +20 or -20 inch-pounds. 6. Do a check to make sure that the 0500118-49 Fuel Return Line Assembly does not touch the right MC0543022-2C Steering Tube Assembly as follows: A

. Turn the nosewheel with a tow bar and move the copilot's rudder pedals at the same time while you look at the MC0543022-2C Steering Tube Assembly as it moves through its full range of motion. (1) If the 0500118-49 Fuel Return Line Assembly touches the right MC0543022-2C Steering Tube Assembly or the airplane structure, you must loosen the two 8-nuts that attach the 0500118-49 Fuel Return Line Assembly and do Step 58 thru 5E again until the 0500118-49 Fuel Return Line Assembly does not touch the right MC0543022-2C Steering Tube Assembly or the airplane structure. Go to Step 7

. (2) If the 0500118-49 Fuel Return Line Assembly does not touch the right MC0543022-2C Steering Tube Assembly or the airplane structure, go to Step 7. 7. Push the fuel shutoff valve handle forward to the ON position. 8. Do a check for leaks at the 0500118-49 Fuel Return Line Assembly. 9. Install the access plate (230BT) and the rudder panel close-out panel. (Refer to the Model 172 Series 1996 and On Maintenance Manual, Chapter 6, Access/Inspection Plates- Description and Operation

.) 10. Install the copilot's seat. (Refer to the Model 172 Series 1996 and On Maintenance Manual, Chapter 25, Flight Compartment- Maintenance Practices.) 

# I Page 4 SB07-28-0 1 Revision 1 September 22 , 2011

### WARNING: FOLLOW ALL SAFETY PRECAUTIONS WHEN YOU WORK ON OR NEAR THE INFLATABLE RESTRAINT SYSTEM . THE INFLATOR ASSEMBLY IS A STORED , GAS/ENERGETIC MATERIAL DEVICE AND CAN CAUSE DAMAGE TO THE SYSTEM AND/OR INJURY TO PERSONNEL IF ACCID ENTALLY DEPLOYED 11. Arm the AMSAFE inflatable restraint systems, if installed. (Refer to the Model172 Series 1996 and On Maintenance Manual, Chapter 25, Inflatable Restraint System- Maintenance Practices.) 12. For airplanes with the AMSAFE inflatable restraint system, do an operational check of the seat be lt system

. (Refer to the AMSAFE Supplemental Maintenance Manual , part number E508804.) 13

. Remove maintenance warning tags from battery and external power receptacle and connect the battery. 14. Make an entry in the airplane logbook that states complian ce and method of complia nce with this service bu lletin.



# I SB0?-28
-01 Revision 1 September 22, 2011 Page 5

## A Firewall (Reference)

AE3663163E0240 Hose Asse mbly (Reference)

AN832-4 Union (Reference) AN924-4 Nut AN960
- 916L Washer (Reference) Electrical Fuel Pump (Reference)

Fuel Shutoff Valve (Reference)

(NOT E) 

# L----MC0543022-2C Steering Tube Assembly (Reference)

0500118-49 Fuel Return Line Assembly (1 If Required)

## FWD VIEW 

# A- A 0516009
- 24 Fuel Reservoir Assembly (Reference)

B-Nut (Reference) Line S2218

- 4 Assembly Check Valve (Reference) (Reference)

Looking Down at Correct Installation

NOTE: Turn t he nosewheel with a tow bar and move the copilot's rudder pedals



# I Page 6 at the same time while you look at the MC0543022-2C Steering Tube Assembly as it moves through its full range of motion to make sure it does not touch the 0500118-49 Fuel Return Line Assembly or the airplane structure. Figure 1

. Fuel Return Line Inspection (Sheet 1) os10noo1 AA05 16T0150

SB07-28-01 Revision 1 September 22, 2011OWNER NOTIFICATION 

# I A. On June 18 , 2007 the following message was sent to applicable owners of record in SB07-28-01A. Dear Cessna Owner: This Owner Advisory is to inform you that Service Bulletin SB07-28-01: Fuel Return Line Inspection has been relea sed. A report has been received that a part number 0500118-49 Fuel Return Line Assembly was found rubb ing against the right steering tube assembly during full rudder pedal actuation. Service Bulletin SB07-28-01 provides instructions to inspect the fuel return line for damage, and if necessary , repair or replace the line assembly. Non-compliance with this Service Bulletin could potentially result in a fuel leak. Compliance is mandatory: shall be accomplished at the next scheduled maintenance or inspection not to exceed 100 hours of operation or 12 months, whichever occurs first. The information contained in the referenced Cessna Service Bulletin shall be considered an amendment to the Cessna Manufactu re r's Service/Maintenance Manua l or Instructions for continued airworthiness, and must be accomplished for ongoing airworthiness compliance as required per 14 CFR Part 43.13. A labor allowan ce credit of 0.8 man-hour per airplane will be provided to inspect the fuel return line assembly as described in Service Bulletin SB07-28-01. If necessary, an additiona l 0.4 man-hour per airplane will be provided to repair the fuel return line assembly or an additiona l 0.3 man-hour per airplane will be provided to replace the fuel return lin e assembly as described in Service Bulletin SB07-28-01. To receive credit, the work must be completed and the Warranty Claim submitted by a Cessna Single Engine Service Station within 30 ca lendar days of Service Bulletin compliance before the credit expiration dates shown below

. Domesti c . . . . . . . . . . . . . . . . . . . . . June 18, 2008 International

. . . . . . . . . . . . . . . . . . . June 18, 2008 Please contact a Cessna Single Engine Service Station for detailed information and arrange to have Cessna Service Bu lletin S807-28-01 accomplished on your airplane. B. On September 22, 2011, the following message will be sent to applicable owners of record in SB07-28-01AR1: 17281391 thru 17281572 and 172S10490 thru 172S11073: Dear Cessna Skyhawk Owner: This Owner Advisory is to inform you that Service Bulletin SB07-28-01 Revision 1, Fuel Return Line Inspection , has been issued. Revision 1 has been issued to add modei172R serial numbers 17281391 thru 17281572 and model 172S serial numbers 172S10490 thru 172S11073 to the list of airplanes affected by this service bulletin. A report has been received that a part number 0500118-49 Fuel Return Line Assembly was found rubbing against the right steering tube assembly during full rudder pedal actuation. This service bulletin provides instructions to inspect the fuel return line for damage, and if necessary, repair or replace the line assembly. Non
-compliance with this service bulletin could potentially result in a fuel leak

. 

# I SB07-28-01 Revision September 22 , 2011 Page 7

# I Page 8 Compliance is Mandatory : Shall be accomplished at the next scheduled maintenance or inspection not to exceed 100 hours of operation or 12 months , whichever occurs first. NOTE: Compliance with SB0?-28-01 Revision 1 is not required for airplanes in compliance with the Original Issu e. The information contained in the referenced Cessna Service Bulletin shall be conside red an amendment to the Cessna Manufacturer's Service/Maintenance Manual or Instructions for Continued Airworthiness , and must be accomplished for ongoing airworthiness compliance as required per 14 CFR Part 43.13

. For airplane serial numbers 17281391 thru 17281572 and 172S10490 thru 172S11073: A labor allowance cred it of 0.8 man-hour per airplane will be provided to inspect the fuel return line assembly as described in this service bulletin

. If necessary, an additional 0.4 man-hour per airplane will be provided to repair the fuel return line assembly or an additional 0.3 man-hour per airplane will be provided to repl ace the fuel return lin e assembly as described in this service bulletin. Freight will be credited at the most economical method unless pre-approved by Cessna. For pre-approva l contact Cessna Service Parts and Programs Warranty Administration at Telephone: 316-831-4296, Fax: 316-206-2746 or E-mail: cpd2claims@cessna.textron.com. To receive credit, the work must be completed and the Warranty Claim submitted by a Cessna Single Engine Authorized Service Facility within 30 calendar days of service bulletin compliance before the cred it expiration dates shown below. NOTE: Part number 0500118-49 fuel lines removed based on the inspection results of th is service bulletin shall be held for field scrap per standard procedures

. Domestic

. . . . . . . . . . . . . . . . . . . October 13, 2012 International

. ................ October 13, 2012 Please contact a Cessna Single Engine Authorized Service Facility for detailed information and arrange to have Cessna Service Bulletin SB0?-28-01 Revision 1 accomplished on your airplane. As a convenience, service documents are now available online to all our customers through a simple, free-of-charge registration process. If you would like to sign up, pl ease visit the www.cessnasupport.com Customer Access link to register.

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SB07-28-01 Revision 1 September 22 , 2011