# N277EA: 2001 Boeing 737-8CX

- Status: Valid registration
- Airframe: [Boeing 737-8CX](https://openairdocs.org/model/boeing-737-8cx) (registry code 13844IA, 149 seats)
- Engine: [CFM International CFM56-7B27/B1 series](https://openairdocs.org/engine/cfm-international-cfm56-7b27-b1-series) (registry code 13053)
- Serial number: 32359
- Year built: 2001
- Type: Fixed wing multi engine
- Engine type: Turbo-fan
- Airworthiness: Special flight permit
- Airworthiness date: January 23, 2013
- Certificate issued: June 4, 2025
- Expires: June 30, 2032
- Mode S code: A2C0E2
- Registered owner: [Umb Bank Na Trustee](https://openairdocs.org/faa-owner/UMB%20BANK%20NA%20TRUSTEE)
- Location: [Salt Lake City, UT](https://openairdocs.org/faa-place/UT/Salt%20Lake%20City)
- Owner type: Corporation
- Owner's area on the map: 40.6171° N, 111.6866° W: Placed by OpenAirDocs at the center of ZIP code 84121, within about 5 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=277EA
- Page: https://openairdocs.org/aircraft/N277EA

From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination. The registry lists only the engine series, so ADs for every CFM International CFM56-7B27/B1 model are included.

## ADs that may apply (OpenAirDocs): 17 in force

### Matched by airframe (Boeing 737-8CX)

None in force.

### Matched by engine (CFM International CFM56-7B27/B1 series)

- [AD 2023-05-05](https://openairdocs.org/ad/2023-05-05): Turbine Engine Compressor Section · CFM International CFM56-5B1, CFM56-5B1/2P, CFM56-5B1/3 and 98 more. Effective May 10, 2023
- [AD 2022-02-03](https://openairdocs.org/ad/2022-02-03): Turbine Engine Accessory Drive · CFM International CFM56-3, CFM56-3B, CFM56-3C and 34 more. Effective Mar 22, 2022
- [AD 2021-16-08](https://openairdocs.org/ad/2021-16-08): Turbine Section · CFM International CFM56-5B1, CFM56-5B1/2P, CFM56-5B1/P and 55 more. Effective Sep 28, 2021
- [AD 2018-26-01](https://openairdocs.org/ad/2018-26-01): Turbine Engine Compressor Section · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B20/3 and 46 more. Effective Jan 10, 2019
- [AD 2018-09-51](https://openairdocs.org/ad/2018-09-51): Engine · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B20/3 and 46 more. Effective Jun 7, 2018
- [AD 2015-18-04](https://openairdocs.org/ad/2015-18-04): 73-tooth gearshaft located in the engine accessory gearbox (AGB) · CFM International CFM56-3, CFM56-7B20, CFM56-7B20/2 and 47 more. Effective Oct 20, 2015
- [AD 2015-04-02](https://openairdocs.org/ad/2015-04-02): Dual engine thrust instability event · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B20/3 and 46 more. Effective Mar 31, 2015
- [AD 2010-13-09](https://openairdocs.org/ad/2010-13-09): Stage 3 low-pressure turbine (LPT) · CFM International CFM56-5, CFM56-5-A1/F, CFM56-5A4 and 88 more. Effective Jul 26, 2010
- [AD 2010-01-05](https://openairdocs.org/ad/2010-01-05): LP turbine rear frames · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B20/3 and 25 more. Effective Feb 18, 2010
- [AD 2009-11-02](https://openairdocs.org/ad/2009-11-02): HPC 4-9 spools · CFM International CFM56-2, CFM56-2A, CFM56-2B and 109 more. Effective Jun 23, 2009
- [AD 2008-03-09](https://openairdocs.org/ad/2008-03-09): Low pressure turbine rear frames (TRFs) · CFM International CFM56-7B18, CFM56-7B20, CFM56-7B22 and 10 more. Effective Mar 10, 2008
- [AD 2006-26-01](https://openairdocs.org/ad/2006-26-01): Fuel filters · CFM International CFM56-2, CFM56-2A, CFM56-2B and 93 more. Effective Jan 3, 2007
- [AD 2002-16-18](https://openairdocs.org/ad/2002-16-18): Low pressure turbine (LPT) nozzle segments · CFM International CFM56-5B1, CFM56-5B1/2P, CFM56-5B1/P and 33 more. Effective Sep 18, 2002
- [AD 2002-13-03](https://openairdocs.org/ad/2002-13-03): Turbofan Engines · CFM International CFM56-2, CFM56-2A, CFM56-2B and 55 more. Effective Aug 1, 2002
- [AD 2001-11-05](https://openairdocs.org/ad/2001-11-05): No. 4 Bearings · CFM International CFM56-2, CFM56-2B, CFM56-3 and 45 more. Effective Jun 11, 2001
- [AD 2001-02-12](https://openairdocs.org/ad/2001-02-12): On-Wing Torque Inspection · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B22 and 11 more. Effective Feb 14, 2001
- [AD 98-21-23](https://openairdocs.org/ad/98-21-23): Electronic Engine Control · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B22 and 10 more. Effective Nov 2, 1998

### Historical (superseded or no longer in force)

- [AD 2021-10-09](https://openairdocs.org/ad/2021-10-09) (historical): Turbine Engine Compressor Section · CFM International CFM56-5B1, CFM56-5B1/2P, CFM56-5B1/3 and 82 more. Effective Jun 24, 2021
- [AD 2019-12-05](https://openairdocs.org/ad/2019-12-05) (historical): Turbine Section · CFM International CFM56-5B1, CFM56-5B1/2P, CFM56-5B1/P and 39 more. Effective Jul 5, 2019
- [AD 2018-18-01](https://openairdocs.org/ad/2018-18-01) (historical): Turbine Engine Compressor Section · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B20/3 and 46 more. Effective Oct 16, 2018
- [AD 2018-10-11](https://openairdocs.org/ad/2018-10-11) (historical): Turbine Engine Compressor Section · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B20/3 and 46 more. Effective Jun 1, 2018
- [AD 2018-09-10](https://openairdocs.org/ad/2018-09-10) (historical): Turbine Engine Compressor Section · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B20/3 and 46 more. Effective May 14, 2018
- [AD 2013-26-01](https://openairdocs.org/ad/2013-26-01) (historical): Oil dynamic seal assembly · CFM International CFM56-3, CFM56-3B, CFM56-3C and 52 more. Effective Feb 3, 2014
- [AD 2000-12-01](https://openairdocs.org/ad/2000-12-01) (historical): Critical Life-Limited Parts · CFM International CFM56-2, CFM56-2A, CFM56-2B and 54 more. Effective Dec 11, 2000

## Information bulletins (advisory) (1 in force)

- [SAIB NE-08-17R3](https://openairdocs.org/saib/NE-08-17R3): Turbine Section - Propulsion Technology LLC Unapproved Repair. Issued May 28, 2014
- [SAIB NE-08-17R2](https://openairdocs.org/saib/NE-08-17R2) (historical): Turbine Section - Propulsion Technology LLC Unapproved Repair. Issued Mar 7, 2011
- [SAIB NE-08-17R1](https://openairdocs.org/saib/NE-08-17R1) (historical): Propulsion Technology LLC Unapproved Repair. Issued May 22, 2008
- [SAIB NE-08-17](https://openairdocs.org/saib/NE-08-17) (historical): Propulsion Technologies International Unapproved Repair. Issued May 14, 2008

## NTSB investigations

None matched to N277EA.

## FAA accident and incident reports

None matched to N277EA.

## Service difficulty reports (38)

As reported by operators and repair stations. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

- [SDR I5EA2023042000004](https://openairdocs.org/sdr/I5EA2023042000004), Apr 19, 2023: BATTERY PACK. NO TEST. M1675 EMERGENCY BATTERY PACK FAILED CAPACITY FUNCTIONAL CHECK - REMOVED AND REPLACED M1675 STA 322L W/ SERVICEABLE UNIT AND TEST IAW B737-800 AMM 33-51-06, TEST
- [SDR I5EA2023042000003](https://openairdocs.org/sdr/I5EA2023042000003), Apr 19, 2023: BATTERY PACK. NO TEST. M1674 EMERGENCY BATTERY PACK FAILED CAPACITY FUNCTIONAL CHECK - REMOVED AND REPLACED M1674 STA 322R W/ SERVICEABLE UNIT AND TEST IAW B737-800 AMM 33-51-06, TEST
- [SDR I5EA2022110300003](https://openairdocs.org/sdr/I5EA2022110300003), Oct 26, 2022: TRANSDUCER. FAILED. ANTISKID LIGHT ILLUMINATED IN FLIGHT, EMERGENCY DECLARED INTO KIWA. REMOVED AND REPLACED #4 WHEEL TRANSDUCER AND ANTISKID CONTROL BOX IAW B737 AMM 32-42-11 AND 
- [SDR I5EA2021102000004](https://openairdocs.org/sdr/I5EA2021102000004), Oct 14, 2021: PUMP. FAILED. INFLIGHT #2 ENGINE HYD. B SYSTEM LOW PRESSURE LIGHT ILLUMINATED RUN QRH AFTER A PERIOD OF TIME B SYSTEM QUANTITY DROPPED TO 0 RUN QRH. UPON INSPECTION FOUND EDP
- [SDR I5EA2021080400001](https://openairdocs.org/sdr/I5EA2021080400001), Aug 4, 2021: FSEU. NO TEST. DURING CLIMB AURAL WARNING AND TAKE OFF CONFIGURATION WARNING LIGHTS CAME ON WHEN PASSING FL 310. CHECKLIST PERFORMED AND LIGHTS AND SOUND WENT OFF WHEN PASSING
- [SDR I5EA2021032500009](https://openairdocs.org/sdr/I5EA2021032500009), Mar 22, 2021: PUMP. INOPERATIVE. #2 EDP NO PRESSURE AND UPON ON APPROACH B SYSTEM HYDRAULIC QUANTITY LOW. REMOPVED AND REPLACED #2 ENG EDP PER AMM 29-11-11. OPS AND LEAK CHECK ARE GOOD.
- [SDR I5EA201910110905](https://openairdocs.org/sdr/I5EA201910110905), Sep 23, 2019: INDICATOR. SPLIT. TRAILING EDGE FLAP INDICATOR SPLIT BETWEEN 0 UNIT RT, 3 UNIT LH DURING THE FLIGHT UNABLE TO OPERATE TRAILING EDGE FLAP FOR LANDING.
- [SDR I5EA201910100904](https://openairdocs.org/sdr/I5EA201910100904), Sep 23, 2019: INDICATOR. SPLIT. TRAILING EDGE FLAP INDICATOR SPLIT BETWEEN 0RT AND 3"LH AFTER TAKE OFF. UNABLE TO OPERATED TRAILING EDGE FLAPS HIGH ENERGY CONDITION INSPECTION.
- [SDR I5EA2019072909](https://openairdocs.org/sdr/I5EA2019072909), Jul 27, 2019: PIN. RECESSED. DISCREPANCY: EMERGENCY EXIT LIGHTS STAY ON WITH SWITCH IN THE ARMED POSITION. CORRECTIVE ACTION: TROUBLE SHOT THE EMERGANCY EXIT LIGHT SYSTEM IAW FIM 33-50-00 F
- [SDR I5EA20190705](https://openairdocs.org/sdr/I5EA20190705), Jul 13, 2019: POWER SUPPLY. INOPERATIVE. DISCREPANCY: RT AFT EMERGANCY EXTERNAL LIGHT INOP. CORRECTIVE ACTION: TROUBLE SHOT EMERGANCY LIGHT SYSTEM PER WDM 33-51-14 FOUND THE EXTERNAL EMERGANCY LIGHT PO
- [SDR I5EA2019071104](https://openairdocs.org/sdr/I5EA2019071104), Jul 10, 2019: DOOR. OUT OF POSITION. DISCREPANCY: AFTER TAKEOFF THE LANDING GEAR FAILED TO RETRACT, PILOT RETURNED TO BASE AND CONDUCTED AN OVERWEIGHT LANDING ( LANDING WEIGHT 69.5 VREF 152+5=157).
- [SDR I5EA2019052800014](https://openairdocs.org/sdr/I5EA2019052800014), May 15, 2019: BLOCK. DAMAGED. DISCREPANCY: COMPLETE EO SWA-190203S, REV: IR, DATED: 02-15-2019. CORRRECTIVE ACTION: ACCOMPLISHED L/H AFT "D" LAVATORY REPAIR COMPOSITE EXTERIOR SURFACE AND FA
- [SDR I5EA2019052800015](https://openairdocs.org/sdr/I5EA2019052800015), May 15, 2019: BLOCK. DAMAGED. DISCREPANCY: COMPLETE EO SWA-190203S, REV: IR, DATED: 02-15-2019. CORRRECTIVE ACTION: ACCOMPLISHED FWD "A" LAVATORY REPAIR COMPOSITE EXTERIOR SURFACE AND FABRIC
- [SDR I5EA2019052800013](https://openairdocs.org/sdr/I5EA2019052800013), May 15, 2019: BLOCK. DAMAGED. DISCREPANCY: COMPLETE EO SWA-190203S, REV: IR, DATED: 02-15-2019. CORRRECTIVE ACTION: ACCOMPLISHED RT AFT "E" LAVATORY REPAIR COMPOSITE EXTERIOR SURFACE AND FAB
- [SDR I5EA2019052800031](https://openairdocs.org/sdr/I5EA2019052800031), May 15, 2019: SKIN. CRACKED. DISCREPANCY: FOUND CRACK AT FUSELAGE STA 787 BETWEEN STRINGERS 8L AND 9L. CORRECTIVE ACTION: ACCOMPLISHED REPAIR AT LT FUSELAGE STA 787 BETWEEN STRINGERS 8L AND
- [SDR I5EA20190530](https://openairdocs.org/sdr/I5EA20190530), May 15, 2019: SKIN. CRACKED. DISCREPANCY: FOUND CRACK AT RT FUSELAGE STA: 867 BETWEEN STRINGERS 8R AND 9R. CORRECTIVE ACTION: ACCOMPLISHED REPAIR AT RT FUSELAGE STA 867 BETWEEN STRINGERS 8R
- [SDR I5EA2019052800029](https://openairdocs.org/sdr/I5EA2019052800029), May 15, 2019: SKIN. CRACKED. DISCREPANCY: FOUND CRACK AT LT FUSELAGE STA 500A BETWEEN 8L AND 9L. CORRECTIVE ACTIONS: ACCOMPLISHED REPAIR AT LT FUSELAGE STA 500A BETWEEN STRINGERS 8L AND 9L 
- [SDR I5EA2019052800028](https://openairdocs.org/sdr/I5EA2019052800028), May 15, 2019: SKIN. CRACKED. DISCREPANCY: FOUND CRACK AT LT FUSELAGE STA 727D BTWEEN STRINGERS 8L AND 9L. CORRECTIVE ACTION: ACCOMPLISHED REPAIR AT LT FUSELAGE STA 727D BETWEEN 8L AND 9L PE
- [SDR I5EA2019052500027](https://openairdocs.org/sdr/I5EA2019052500027), May 15, 2019: SKIN. CRACKED. DISCREPANCY: FOUND DAMAGE AT RT FUSELAGE STA 727D BETWEEN STRINGERS 8R AND 9R. CORRECTIVE ACTION: ACCOMPLISHED REPAIR AT RT FUSELAGE STA 727D BETWEEN STRINGERS 
- [SDR I5EA2019052500026](https://openairdocs.org/sdr/I5EA2019052500026), May 15, 2019: SKIN. CRACKED. DISCREPANCY: FOUND CRACK AT RT FUSELAGE STA 460 BETWEEN STRINGERS 8R AND 9R. CORRECTIVE ACTION: ACCOMPLISHED REPAIR AT RT FUSELAGE STA 460 BETWEEN STRINGERS 8R 
- [SDR I5EA2019052400025](https://openairdocs.org/sdr/I5EA2019052400025), May 15, 2019: SKIN. CRACKED. DISCREPANCY: FOUND CRACK AT LT FUSELAGE STA 400 BETWEEN STRINGERS 8L AND 9L. CORRECTIVE ACTION: ACCOMPLISHED REPAIR AT LT FUSELAGE STA 400 BETWEEN STRINGERS 8L 
- [SDR I5EA2019052400024](https://openairdocs.org/sdr/I5EA2019052400024), May 15, 2019: SKIN. DAMAGED. DISCEPANCY: FOUND DAMAGE AT LT FUSELAGE STA 440 BETWEEN STRINGERS 8L AND 9L. CORRECTIVE ACTION: ACCOMPLISHED REPAIRS AT LT FUSELAGE STA 440 BETWEEN STRINGERS 8L
- [SDR I5EA2019052300022](https://openairdocs.org/sdr/I5EA2019052300022), May 15, 2019: SKIN. CRACKED. CRACK FOUND AT STA 500 RT BETWEEN STRINGER 8R AND 9R. CORRECTIVE ACTION: ACCOMPLISHED REPAIR AT RT FUSELAGE STA. 500 BETWEEN STRINGERS 8R AND 9R PER AD 2009-01-
- [SDR I5EA2019052300020](https://openairdocs.org/sdr/I5EA2019052300020), May 15, 2019: SKIN. CRACKED. DISCREPANCY: FOUND CRACK AT FUSELAGE SECTION 47 LOWER PLATING AROUND FUSELAGE STA LT 1016 BETWEEN STRINGERS 20 AND 23L. CORRECTIVE ACTION: ACCOMPLISHED CRACK RE
- [SDR I5EA2019052100019](https://openairdocs.org/sdr/I5EA2019052100019), May 15, 2019: LINK. NOT REPORTED. INSTALL NEW PIVOT LINK ASSEMBLYS BS 520 TO 540 IAW AD 2015-02-26 (G) 1 AND SB 737-53-12-44 R5 GROUP 4. CORRECTIVE ACTION: ACCOMPLISHED INSTALL NEW PIVOT LINK AS
- [SDR I5EA2019052100018](https://openairdocs.org/sdr/I5EA2019052100018), May 15, 2019: SKIN. CRACKED. DISCREPANCY: FOUND CRACK AT FUSELAGE STA. 867 RT BETWEEN STRINGERS 8R AND 9R. CORRECTIVE ACTION: ACCOMPLISHED REPAIR AT RT FUSELAGE STA. 867 BETWEEN STRINGERS 8
- [SDR I5EA2019052100017](https://openairdocs.org/sdr/I5EA2019052100017), May 15, 2019: SKIN. CRACKED. DISCREPANCY: FOUND CRACK AT LT FUSELAGE STA. 460 BETWEEN STRINGERS 8L AND 9L. CORRECTIVE ACTION: ACCOMPLISHED REPAIR AT LT FUSELAGE STA 460 BETWEEN STRINGERS 8L
- [SDR I5EA2019052100002](https://openairdocs.org/sdr/I5EA2019052100002), May 15, 2019: DOUBLER. NOT REPORTED. DISCREPANCY: ACCOMPLISHED DET VISUAL INSPECTION OF REPAIR ON LT HORIZONTAL STABILIZER LOWER SKIN LE STA 133.15 CORRECTIVE ACTION: ACCOMPLISHED PERMANENT EXTERNA
- [SDR I5EA20190512](https://openairdocs.org/sdr/I5EA20190512), May 15, 2019: SKIN. CRACKED. DISCREPANCY: FOUND CRACK AT LT FUSELAGE STA. 500F BETWEEN STRINGERS 8L AND 9L. CORRECTIVE ACTION: ACCOMPLISHED REPAIR AT LT FUSELAGE STA. 500F BETWEEN STRINGERS
- [SDR I5EA20190511](https://openairdocs.org/sdr/I5EA20190511), May 15, 2019: SKIN. CRACKED. DISCREPANCY: FOUND CRACK AT LT FUSELAGE STATION. 360 BETWEEN STRINGERS 8L AND 9L. CORRECTIVE ACTION: ACCOMPLISHED REPAIR AT LT FUSELAGE STATION. 360 BETWEEN STR
- [SDR I5EA2019052100001](https://openairdocs.org/sdr/I5EA2019052100001), May 15, 2019: SKIN. DAMAGED. DISCREPANCY: FOUND DAMAGE AT RT FUSELAGE STA. 400 BETWEEN STRINGERS 8R AND 9R. CORRECTIVE ACTION: ACCOMPLISHED REPAIR AT RT FUSELAGE STA. 400 BETWEEN STRINGERS 
- [SDR I5EA2019040901](https://openairdocs.org/sdr/I5EA2019040901), Apr 5, 2019: LAMP. BURNED OUT. ROW 12 L/H SIDE EMERGANCY LIGHT INOP. REMOVED LAMP ROW 12 L/H SIDE AEREA LIGHT PER AMM 33-51-03. OPS TEST WAS GOOD.
- [SDR I5EA201804060001](https://openairdocs.org/sdr/I5EA201804060001), Apr 4, 2018: BATTERY PACK. DISCHARGED. MID CABIN EMERGENCY LIGHTS M1670 INOP AT STA 727C+13. REMOVED AND REPLACED BATTERY PACK (M1670) AT STA. 727C+13, TEST GOOD IAW AMM 33-51-06.
- [SDR 29EA20160523001](https://openairdocs.org/sdr/29EA20160523001), May 23, 2016: BATTERY PACK. DISCHARGED. DURING INSPECTION FOUND THE EMER EXIT LIGHT BATTERY PACK NOT TESTING PROPERLY.
- [SDR 29EA20160403003](https://openairdocs.org/sdr/29EA20160403003), Mar 30, 2016: LIGHT. INOPERATIVE. L1 DOOR EMER EXIT LIGHT INOPERATIVE. R & R LAMP IAW THE AMM 33-51-04. OPERATIONS CHECKED NORMAL UNDER NR 500 038 WO SRO1857.
- [SDR 29EA20160403002](https://openairdocs.org/sdr/29EA20160403002), Mar 30, 2016: LIGHT. INOPERATIVE. AFT LT WING EMER EXIT LIGHT INOPERATIVE. R & R LAMP IAW THE AMM 33-51-04. OPERATIONS CHECKED NORMAL UNDER NR 500 038 WO SR O1857.
- [SDR 29EA20160403001](https://openairdocs.org/sdr/29EA20160403001), Mar 30, 2016: POWER SUPPLY. INOPERATIVE. EMERGENCY POWER SUPPLY ON RT ROW 14 INOPERATIVE. R & R POWER SUPPLY IAW THE AMM 33-51-06. OPERATIONS CHECKED NORMAL UNDER NR 500 038 WO SRO1857.
- [SDR 29EA2016F00037](https://openairdocs.org/sdr/29EA2016F00037), Dec 14, 2015: CIRCUIT BOARD. BURNED. FOUND CIRCUIT BOARD BURNED AND SHORTED, CONNECTOR PLUG ALSO BURNED AND SHORTED.

## STCs that may be installed (OpenAirDocs) (2)

Approved for this aircraft's airframe or engine model, in force first, then newest. The registry doesn't record which STCs an aircraft has; its records do.

### Approved for the engine (CFM International CFM56-7B27/B1 series)

- [STC SE04840NY](https://openairdocs.org/stc/SE04840NY): Installation of HarcoSemco Exhaust Gas Temperature (EGT) Electrical Harnesses in CFM56-7 engine. Kilroy Aviation LLC
- [STC SE03036CH](https://openairdocs.org/stc/SE03036CH): Application of a deep compressive stress layer using a Low Plasticity Burnishing (LPB) process on CFM56-7 Series Engines Stage 1 High Pressure Compressor (HPC) Blade Dovetails in accordance with Delta Air Lines Inc. Drawing No. 72-0396, Revision B, dated November 3, 2011, or later FAA Approved revision. Delta Air Lines Inc

## Related

- Other Boeing 737-8CX aircraft: https://openairdocs.org/model/boeing-737-8cx/aircraft.md
- The CFM International CFM56-7B27/B1 series engine: https://openairdocs.org/engine/cfm-international-cfm56-7b27-b1-series.md

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