Citation Revision 1 SERVICE LETTER REVISION SL750-71-13 TRANSMITTAL SHEET This sheet transmits Revision 1 to SL750-71-13. A. Attaches the latest revision of the Rolls-Royce Notice To Operators (NTO) Number AE3007C-082. NOTE: This revision replaces the original issue of SL750-71-13 in its entirety. NOTE: Change bars and pointing hands are not used in this publication to denote revised material. This transmittal sheet provides a complete description of the changes made by this revision, except for editorial changes. REVISION COMPLIANCE NO EFFECT. Airplanes previously modified by this service letter are not effected by this revision. SUMMARY OF REVISIONS Original Issue Apr 6/2007 Revision 1 Mar 1/2011
Citation TITLE SERVICE LETTER SL750-71-13 POWER PLANT - TRANSMITTAL OF ROLLS-ROYCE NOTICE TO OPERATORS (NTO) NUMBER AE3007C-082 EFFECTIVITY MODEL SERIAL NUMBERS 750 (Citation X) -0001 thru -0255 REASON Transmits the Rolls-Royce NTO number AE3007C-082 titled P2.5 Sensor Drift. DESCRIPTION This service letter transmits the Rolls-Royce NTO number AE3007C-082 and gives instructions to download and clear engine trend data. NOTE: Inspection of the P2.5 Sensor will become a chapter 5 mandatory inspection with revision 40 of the Rolls Royce Maintenance Manual. Rolls Royce anticipates revision 40 of the Maintenance Manual will release on or before July 1, 2007. COMPLIANCE MANDATORY. This service letter must be accomplished within 90 days from the date of receipt. NOTE: Operators enrolled in the Rolls Royce CorporateCare program, currently submit the P2.5 trend data to DS&S and meet the current requirements of this service letter and attached NTO. MANPOWER WORK PHASE MAN-HOURS Download and Clear 1.0 Apr 6/2007 750-71-13 Revision 1 - Mar 1/2011 Page 1 of 4 Cessna Aircraft Company, Citation Marketing Division, P.O. Box 7706, Wichita, KS 67277, U.S.A. 1-316-517-6000, Fax 1-316-517-8500 COPYRIGHT 2007
Citation WARRANTY Eligibility: All Affected airplanes. SERVICE LETTER SL750-71-13 Parts: Authorized Citation Service Facilities, individual operators, or other maintenance facilities may submit a Credit Claim Form for the parts kit(s) required for accomplishment of this service letter, provided the work is completed and the claim submitted by the expiration date shown below. Labor: Authorized Citation Service Facilities may submit a Credit Claim Form for accomplishment of this service letter, on eligible airplanes, provided the work is completed and the claim submitted by the expiration date shown below. Expiration: Jul 31/2007 REFERENCES Cessna Citation Model 750 Maintenance Manual Rolls-Royce Notice to Operators AE Series Engines AE3007C-082 PUBLICATIONS AFFECTED None ACCOMPLISHMENT INSTRUCTIONS 1. Complete the attached Rolls-Royce NTO AE3007C-082. NOTE: Instructions for the engine trend diagnostics download are given in this service letter. 2. Supply electrical power to the airplane as follows: A. Make sure that all switches are in the OFF/NORM position. B. Connect electrical power to the airplane. (1) Connect the airplane batteries. (2) Connect external electrical power. C. Place the external power switch to the ON/EXT PWR position. D. Place the AVIONICS/EICAS power switch(es) to the ON/AVN/EICAS position. 3. Remove panel 244BL from the center console. (Refer to the Model 750 Maintenance Manual, Chapter 6, Access Plates and Panels Identification - Description and Operation.) 4. Connect the 9555024-1 Avionics Test Cable. A. Connect the avionics test cable to the PC. CAUTION: Make sure the PC is off before the avionics test cable is connected. Software damage can happen if the avionics test cable is connected and the PC is on. NOTE: There are two connections on one end of the cable. Connect the cable end that does not have the AHRS/WRITE ENABLE switch. B. Connect the opposite end to the top pedestal diagnostic port. NOTE: The top port is for the left engine and the bottom port is for the right engine. C. Start the PC. Apr 6/2007 750-71-13 Revision 1 - Mar 1/2011 Page 2
Citation SERVICE LETTER SL750-71-13 5. Download and clear the engine trend data. A. Start the Honeywell Download and Clear Program (DLCLWIN). NOTE: It is recommended to select a drive and location so that the saved files can easily be accessed when necessary. B. Select the file save location. (1) Select FILE. (2) Select CHANGE DIR OPTION. (3) Choose a location to save the file and click OK. C. Select the DOWNLOAD of the NVM function group. D. Select the INTEGRATED AVIONICS COMPUTER (FWC) from the SELECT A SUBSYSTEM group. E. Select TREND DATA from the SELECT A FILE FOR DOWNLOAD and click OK. NOTE: This procedure requires a download of each engine's trend data which are saved as.tnd files. Engine exceedance data, which is saved as a.exc file, is not needed for this procedure. F. Click on OK to continue when the confirm window appears. G. Follow the instructions on the screen to complete the download. H. Disconnect the avionics test cable from the top pedestal diagnostic port. I. Connect the avionics test cable to the bottom pedestal diagnostic port. J. Do Steps 5B through 5G for the right engine. 6. Make sure the files were downloaded. A. Open WINDOWS EXPLORER. (1) Open the drive that the trend files were saved. (a) Make sure there is a.tnd file for the engine trend data. 7. Clear the engine trend data. A. Select the CLEAR FUNCTION of the NVM function group. B. Select the INTEGRATED AVIONICS COMPUTER (FWC) from the SELECT A SUBSYSTEM group. C. SelectTRENDDATAfromtheSELECTAFILEFORCLEARandclickOK. D. Click on OK to continue when the confirm window appears. E. Follow the instructions on the screen to clear the trend data. F. Disconnect the avionics test cable from the bottom pedestal diagnostic port. G. Connect the avionics test cable to the top pedestal diagnostic port. H. Do Steps 7C through 7E for the left engine. 8. Disconnect the PC. A. Stop the PC. B. Disconnect the avionics test cable from the top pedestal diagnostic port. C. Disconnect the avionics test cable from the PC. 9. Install panel 244BL on the center console. (Refer to the Model 750 Maintenance Manual, Chapter 6, Access Plates and Panels Identification - Description and Operation.) Apr 6/2007 750-71-13 Revision 1 - Mar 1/2011 Page 3
Citation SERVICE LETTER SL750-71-13 10. Disconnect electrical power from the airplane as follows: A. Make sure that all switches are in the OFF/NORM position. B. Disconnect the airplane batteries. C. Disconnect external electrical power. 11. Record that you completed this service letter as follows: A. Complete a Maintenance Transaction Report. B. Put a copy of the completed Maintenance Transaction Report in the airplane logbook. C. Send a copy of the completed Maintenance Transaction Report to: CESCOM, P.O. Box 7706, Wichita, KS 67277. Apr 6/2007 750-71-13 Revision 1 - Mar 1/2011 Page 4
NOTICE TO OPERATORS AE SERIES ENGINES NTO No.: AE 3007C-082 Issue No.: 2 Date: 15 September, 2010 TITLE: P2.5 Sensor Drift Valid until: Indefinitely ATA Area: 75-43-00 EFFECTIVITY: All AE 3007C Series Engines Purpose The purpose of this NTO is to inform operators of the P2.5 sensor drift (minor change in sensor calibration over time) on AE 3007C series engines. Investigation of the P2.5 sensor, also referred to as the compressorinlet-pressure sensor (Rolls-Royce part number 23055446 or 23075351), shows that negative drift of the sensor output may occur over time. A P2.5 sensor drift condition could lead to an un-commanded thrust reduction at altitudes above 30,000 ft. (9,144 m). Engine performance below 30,000 ft. (9,144 m) is not affected and experience has shown that descending below 30,000 ft. (9,144 m) will lead to full recovery of thrust. The sensor drift condition occurs over a period of 2 to 3 years; therefore the condition can be monitored and corrected. To make sure that the sensors continue to operate correctly, it will be necessary for the operators to send data at some intervals to Rolls-Royce. Rolls-Royce will make an analysis of the P2.5 sensor integrity. If the data that you send to Rolls-Royce shows that it is necessary to replace the P2.5 sensor, then Rolls-Royce will speak to you. CorporateCare Operators who have P2.5 sensors with known trend data as a part of their agreement will not have to do more procedures. Non-CorporateCare Operators will have only their P2.5 trend data analysis free-of-charge because of this NTO and an updated Chapter 5 requirement. The inspection of the P2.5 sensor has become a Chapter 5 Mandatory Inspection. FADAC software version C9.1 and subsequent revisions incorporate an on-ground check that negates the need to do this trending. C9.1 software is installed by Service Bulletins AE 3007C-73-049, AE 3007C-73-050 or AE 3007C-73-051. Compliance with these bulletins or subsequent Service Bulletins renders trending for P2.5 sensor drift unnecessary. Chapter 5 Mandatory Inspection Requirement Do the inspection of the compressor-inlet-pressure sensor (P2.5 sensor) Engine trend diagnostics download, until compliance with Service Bulletins AE 3007C-73-049, AE 3007C-73-050 or AE 3007C-73-051 or subsequent Service Bulletins. Reference A. Mandatory Inspections TASK 05-13-00-800-801, AE 3007C Maintenance Manual (MM) CSP34012. B. Cessna Service Letter, SL750-71-13. C. Service Bulletin AE 3007C-73-049 Engine Fuel Control New FADAC with Software Version C9.1 for the AE 3007C Engine. D. Service Bulletin AE 3007C-73-050 Engine Fuel Control New FADAC with Software Version C9.1 for the AE 3007C Enhanced Engine. E. Service Bulletin AE 3007C-73-051 Engine Fuel Control New FADAC with Software Version C9.1 for the AE 3007C1 Engine. Page 1 of 3 Rolls-Royce Corporation The information in this document is the property of Rolls-Royce Corporation and may not be copied, or communicated to a third party, or used, for any purpose other than that for which it is supplied without the express consent of Rolls-Royce Corporation. (This does not preclude use by engine and aircraft operators for normal instructional maintenance or overhaul purposes).
NOTICE TO OPERATORS AE SERIES ENGINES NTO No.: AE 3007C-082 Issue No.: 2 Date: 15 September, 2010 Action Labor required to accomplish this NTO, up to 1 hour, will be reimbursed by Rolls-Royce when accomplished at a Cessna Service Center facility. For CorporateCare Operators: P2.5 trending will be carried out using the engine trend data already provided to OSyS. All actions recommended from this trend monitoring will be communicated through your Rolls- Royce Regional Customer Manager (RCM). For Non-CorporateCare Operators: Rolls-Royce recommends the following for operating engines that do not have FADAC C9.1 or higher: 1. Do the first engine trend diagnostics download for the P2.5 sensor (Ref. Cessna Service Letter SL750-71-13). 2. Fill out the P2.5 Trend Monitoring Data Collection Sheet (Data Collection Sheet) (Ref. FIGURE 1). 3. E-mail the *.TND files and Data Collection Sheet to OSyS at CITXTrends@o-sys.com for processing. For assistance doing the engine trend download, please contact your Rolls-Royce RCM. If the data that you send to Rolls-Royce indicate that a sensor needs replacement, Rolls-Royce will contact you. All actions that are required will be communicated through your Rolls-Royce RCM. Note: The use of a customer generated Data Collection Sheet is acceptable if it includes all the information in FIGURE 1. Page 2 of 3 Rolls-Royce Corporation The information in this document is the property of Rolls-Royce Corporation and may not be copied, or communicated to a third party, or used, for any purpose other than that for which it is supplied without the express consent of Rolls-Royce Corporation. (This does not preclude use by engine and aircraft operators for normal instructional maintenance or overhaul purposes).
NOTICE TO OPERATORS AE SERIES ENGINES NTO No.: AE 3007C-082 Issue No.: 2 Date: 15 September, 2010 P2.5 Trend Monitoring Data Collection Sheet AE 3007C Series Engines Customer: Aircraft Serial Number: 750- Aircraft Registration Number: Report Number: Report Date: Left Engine Right Engine Serial Number: Application Standard: 3007C 3007C1 Installation Date: Serial Number: Application Standard: 3007C 3007C1 Installation Date: Trim Resistor: Trim Resistor: Hours: Hours: Cycles: Cycles: FIGURE 1 Page 3 of 3 Rolls-Royce Corporation The information in this document is the property of Rolls-Royce Corporation and may not be copied, or communicated to a third party, or used, for any purpose other than that for which it is supplied without the express consent of Rolls-Royce Corporation. (This does not preclude use by engine and aircraft operators for normal instructional maintenance or overhaul purposes).