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ENGINE FUEL AND CONTROL (73-00-00) - Use of CIS Fuels in CFM56-5B Engines
CFM PROPRIETARY INFORMATION The information contained in this document is CFM p roprietary information and is disclosed in confidence. It is the property of CFM and shall not be used, disclosed to others or reproduced without the express written consent of CFM, including, but without limitation, it is not to be used in the creation, manufacture, development, or derivation of any repairs, modi fications, spare parts, design, or con figuration changes or to obtain FAA or any other government or regulatory approval to do so. If consent is given for reproduction in whole or in part, this notice and the notice set forth on each page of this document shall appear in any such reproduction in whole or in part. The information contained in this document may also be controlled by U.S. export control laws. Unauthorized export or re-export is prohibited.
All technical documentation and information c ontained herein, with respect to assembly and disassembly, cleaning, inspection methods and limits, repair methods and limits, operational limits, life limits and the like, have been developed and approved for use with engines and parts that have been manufactured and/or approved by CFM and that have been maintained in accordance with CFM technical documentation and recommendations. CFM has no contractual or legal obligation for, nor knowledge of, non-CF M-approved parts and repairs. Accordingly, this document is not intended to apply to non-CFM-approved parts and repairs.
November 19, 2003 CFM56-5B S/B 73-0122 Revision 08, March 08, 2012 PAGE 1 of 5
ENGINE FUEL AND CONTROL (73-00-00) - Use of CIS Fuels in CFM56-5B Engines
TRANSMITTAL INFORMATION REVISION 8 TO SERVICE BULLETIN 73-0122 Revision 8 is issued to update paragraphs 1., P LANNING INFORMATION and 3., ACCOMPLISHMENT INSTRUCTIONS.
Revision 7 was issued August 18, 2011. Revision 6 was issued April 23, 2009. Revision 5 was issued August 22, 2007. Revision 4 was issued May 07, 2007. Revision 3 was issued July 20, 2006. Revision 2 was issued January 30, 2006. Revision 1 was issued November 30, 2004. The original was issued November 19, 2003. Revision bars in the left margin identify changes.
1. PLANNING INFORMATION A. Effectivity and Description CFM56-5B1, -5B2, -5B4, -5B5, -5B6, -5B7, -5B1/P , -5B1/2P , -5B1/3, -5B2/P , -5B2/2P , -5B2/3, -5B3/P , -5B3/2P , -5B3/3, -5B3/3B1, -5B4/P , -5B4/2P , -5B4/3, -5B4/3B1, -5B5/P , -5B5/3, -5B6/P , -5B6/2P , -5B6/3, -5B7/P , -5B7/3, -5B8/P , -5B8/3, -5B9/P , -5B9/3
(1) All CFM56-5B series engines with commo nwealth of independent states (CIS) fuels or fuel additives which are uploaded 50 percent to 100 percent of the time based on any 1 year average, since last hydromechanical unit (HMU) shop visit, are affected by this Service Bulletin.
(2) This Service Bulletin de fines the CIS fuels and fuel additives that are fully approved for use in the CFM56-5B series engines. It also de fines the requirements for other fuels and fuel additives that are acceptable for use provided that engine component inspections/cleaning are performed. Refer to T able 1 for a listing of CIS fuel types and additives along with any associated requirements.
TABLE 1 Fuel Type Specification Special Requirements RT GOST 10227 Fully Approved RT GSTU 320.00149943.007 Fully Approved TS-1 GOST 10227 Refer to paragraph
3., Accomplishment Instructions.
TS-1 GSTU 320.00149943.011 Refer to paragraph
3., Accomplishment Instructions.
November 19, 2003 CFM56-5B S/B 73-0122 Revision 08, March 08, 2012 PAGE 2 CFM PRO PRIETARY INFORMATION - Subject to the restrictions on the cover or first page.
ENGINE FUEL AND CONTROL (73-00-00) - Use of CIS Fuels in CFM56-5B Engines Fuel Additive Specification Special Requirements Liquid I (refer to Note 1) (equivalent to EGME) (anti-ice additive) GOST 8313 Fully Approved SIGBOL (refer to Note 2) (anti-static additive) TU38.101741 Fully Approved NOTE 1: The maximum concentration must not exceed 0.15 percent by volume.
NOTE 2: The maximum concentration must not exceed 0.0005 percent by volume.
(3) This Service Bulletin may be revised or canceled pending the results of fuel specification equivalency testing.
B. Compliance Category 2 CFM recommends you do the required inspections as soon as possible, without effect on revenue service, per the requirements in ACCOMPLISHMENT INSTRUCTIONS.
There are no concurrent requirements.
C. Reason
(1) Objective:
Define the requirements for use of CIS fuels and CIS fuel additives that may not currently meet GE Aviation fuel speci fication D50TF2 as shown in paragraph 1.A.(2), T able 1 above.
(2) Condition:
Certain CIS fuels do not currently meet the GE Aviation fuel speci fications due to differences in thermal stability testing methods de fined in the respective specifications.
(3) Cause:
None.
(4) Improvement:
This Service Bulletin de fines which CIS fuels and fuel additives are fully approved or approved with limitations for use in the CFM56-5B series engines.
November 19, 2003 CFM56-5B S/B 73-0122 Revision 08, March 08, 2012 PAGE 3 CFM PRO PRIETARY INFORMATION - Subject to the restrictions on the cover or first page.
ENGINE FUEL AND CONTROL (73-00-00) - Use of CIS Fuels in CFM56-5B Engines
(5) Substantiation:
Use of these fuels and additives is substantiated by the combination of requirements de fined in this document as well as successful operational experience.
D. Approval The technical content of this Service Bulletin is approved by the FAA and under the Authority of DOA No. EASA.21J.086.
E. Manpower No additional man-hours are necessary to do this Service Bulletin.
F. Weight and Balance Weight and balance are not changed.
G. References CFM56 Component Maintenance Manual (CMM) (73-11-42) CFMI-TM.CM.64 CFM56 Component Maintenance Manual (CMM) (73-11-43) CFMI-TM.CM.119 CFM56 Component Maintenance Manual (CMM) (73-11-44) CFMI-TM.CM.343 CFM56 Component Maintenance Manual (CMM) (73-21-18) CFMI-TM.CM.190 CFM56 Component Maintenance Manual (CMM) (73-21-78) CFMI-TM.CM.414 H. Publications Affected None.
I. Interchangeability Not applicable.
2. MATERIAL INFORMATION A. Material - Price and Availability None.
B. Industry Support Information None.
November 19, 2003 CFM56-5B S/B 73-0122 Revision 08, March 08, 2012 PAGE 4 CFM PRO PRIETARY INFORMATION - Subject to the restrictions on the cover or first page.
ENGINE FUEL AND CONTROL (73-00-00) - Use of CIS Fuels in CFM56-5B Engines
3. ACCOMPLISHMENT INSTRUCTIONS A. General This section de fines the necessary checks for engines that operate on TS-1 fuels more than 50 percent of the time as de fined in paragraph 1.A.(1)., E ffectivity and Description. These requirements can be satis fied as follows:
(1) At each engine shop visit, do a flow check of all fuel nozzles. Refer to the CFM56 CMM, 73-11-42, 73-11-43, or 73-11-44.
(2) At each engine shop visit or every 10,000 flight hours, whichever comes first, clean and inspect HMU as directed below. Refer to the CFM56 CMM, 73-21-18 or 73-21-78.
(a) Fully disassemble the HMU. Refer to the relevant CMM.
(b) Clean the hardware. Refer to the relevant CMM.
(c) Do an inspection of all other parts, check fits and clearances sections after cleaning. Refer to the relevant CMM.
(d) Repair, re-assemble, calibrate, and final test the HMU. Refer to the relevant CMM.
(3) At 3,000 flight hour intervals, do a general visual inspection (GVI) of all fuel system components for leaks. Repair all leaks as required.
B. Contact CFM if any item fails an inspection or check.
November 19, 2003 CFM56-5B S/B 73-0122 Revision 08, March 08, 2012 PAGE 5 CFM PRO PRIETARY INFORMATION - Subject to the restrictions on the cover or first page.