ENGINE FUEL AND CONTROL (73-00-00) - Use of CIS Fuels in CFM56-5A Engines

CFM PROPRIETARY INFORMATION The information contained in this document is CFM p roprietary information and is disclosed in con fi dence. 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 fi cations, spare parts, design, or con fi guration 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 contained 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 26, 2003 CFM56-5 S/B 73-0182 Rev ision 06, March 08, 2012 PAGE 1 of 5ENGINE FUEL AND CONTROL (73-00-00) - Use of CIS Fuels in CFM56-5A Engines

TRANSMITTAL INFORMATION REVISION 6 TO SERVICE BULLETIN 73-0182 Revision 6 is issued to update paragraphs 1., P LA N N I N G I N F O R M A T I O N and 3., AC C O M P L I S H M E N T I N S T R U C T I O N S

. Revision 5 was issued July 25, 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 26, 2003. Revision bars in the left margin identify changes. 1. P LA N N I N G I N F O R M A T I O N A. E f fe ct i v i ty CFM56-5-A1, 5-A1/F, -5A3, -5A4, -5A4/F, -5A5, -5A5/F (1) All CFM56-5A 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 defi nes the CIS fuels and fuel additives that are fully approved for use in the CFM56-5A series engines. It also de fi nes the requirements for other fuels and fuel additives that are acceptable for use provided that engine component inspections/cleaning are performed. Refer to Table 1 for a listing of CIS fuel types and additives along with any associated requirements. TABLE 1

Fuel Type S p e c i fi ca t i o n S p e c i a l R e q u i re m e n ts 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 26, 2003 CFM56-5 S/B 73-0182 Revision 06, March 08, 2012 PAGE 2 CFM PRO PRIETARY INFORMATION - Subject to the restrictions on the cover or fi rst page.ENGINE FUEL AND CONTROL (73-00-00) - Use of CIS Fuels in CFM56-5A Engines

F u e l Ad d i t i ve S p e c i fi ca t i o n S p e c i a l R e q u i re m e n ts 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

N O T E 1 : The maximum concentration must not exceed 0.15 percent by volume. N O T E 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 speci fi cation equivalency testing. B. C o m p l i a n ce Category 2 CFM recommends you do the required inspections as soon as possible without effect on revenue service, per the requirements in the Accomplishment Instructions. There are no concurrent requirements. C. R e a s o n (1) Objective: De fi ne the requirements for use of CIS fuels and CIS fuel additives that may not currently meet GE Aviation fuel speci fi cation D50TF2 as shown in paragraph 1.A.(2), Table 1 above. (2) Condition: Certain CIS fuels do not currently meet the GE Aviation fuel speci fi cations due to differences in thermal stability testing methods de fi ned in the respective speci fi cations. (3) Cause: None. (4) Improvement: This Service Bulletin de fi nes which CIS fuels and fuel additives are fully approved or approved with limitations for use in the CFM56-5A series engines.

November 26, 2003 CFM56-5 S/B 73-0182 Revision 06, March 08, 2012 PAGE 3 CFM PRO PRIETARY INFORMATION - Subject to the restrictions on the cover or fi rst page.ENGINE FUEL AND CONTROL (73-00-00) - Use of CIS Fuels in CFM56-5A Engines

(5) Substantiation: Use of these fuels and additives is substantiated by the combination of requirements de fi ned in this document as well as successful operational experience. D. A p p ro v a l The content of this Service Bulletin is approved by the FAA and under the Authority of DOA No. EASA.21J.086. E. M a n p owe r No additional man-hours are necessary to do this Service Bulletin. F. We i g h t a n d B a l a n ce Weight and balance are not changed. G. R efe re n ce s 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) (73-21-19) CFMI-TM.CM.118 CFM56 Component Maintenance Manual (CMM) (73-21-78) CFMI-TM.CM.414 H. P u b l i ca t i o n s Af fe cte d None. I. I n te rc h a n g e a b i l i ty Not applicable. 2. M A T E R I A L I N F O R M A T I O N A. M a te r i a l

- P r i ce a n d A v a i l a b i l i ty Parts necessary to do this Service Bulletin: None. B. I n d u s t ry S u p p o rt I n f o r m a t i o n None.

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3. A C C O M P L I S H M E N T I N S T R U C T I O N S A. G e n e ra l This section de fi nes the necessary checks for engines that operate on TS-1 fuels more than 50 percent of the time as de fi ned in paragraph 1.A.(1)., E f fe ct i v i ty . These requirements can be satisfi ed as follows: (1) At each engine shop visit, do a fl ow check of all fuel nozzles. Refer to the CFM56 CMM, 73-11-42 or 73-11-43. (2) At each engine shop visit or every 10,000 fl ight hours, whichever comes fi rst, 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 fi ts and clearances sections after cleaning. Refer to the relevant CMM. (d) Repair, re-assemble, calibrate, and fi nal test the HMU. Refer to the relevant CMM. (3) At 3,000 fl ight 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 26, 2003 CFM56-5 S/B 73-0182 Revision 06, March 08, 2012 PAGE 5 CFM PRO PRIETARY INFORMATION - Subject to the restrictions on the cover or fi rst page.