# N423UP: 1991 Boeing 757-24APF

- Status: Valid registration
- Airframe: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (registry code 1384969, 178 seats)
- Engine: [CFM International CFM56 series](https://openairdocs.org/engine/cfm-international-cfm56-series) (registry code 13802)
- Serial number: 25325
- Year built: 1991
- Type: Fixed wing multi engine
- Engine type: Turbo-fan
- Airworthiness: Standard, transport
- Airworthiness date: October 31, 1991
- Certificate issued: January 13, 1992
- Expires: May 31, 2029
- Mode S code: A50894
- Registered owner: [United Parcel Service Co](https://openairdocs.org/faa-owner/UNITED%20PARCEL%20SERVICE%20CO)
- Location: [Louisville, KY](https://openairdocs.org/faa-place/KY/Louisville)
- Owner type: Corporation
- Owner's area on the map: 38.2585° N, 85.5398° W: Placed by OpenAirDocs at the center of ZIP code 40223, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=423UP
- Page: https://openairdocs.org/aircraft/N423UP

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 model are included.

## ADs that may apply (OpenAirDocs): 55 in force

### Matched by airframe (Boeing 757-24APF)

None in force.

### Matched by engine (CFM International CFM56 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 2017-14-08](https://openairdocs.org/ad/2017-14-08): Turbine Engine Compressor Section · CFM International CFM56-3, CFM56-3B and CFM56-3C. Effective Aug 18, 2017
- [AD 2017-05-09](https://openairdocs.org/ad/2017-05-09): Accessory Gearboxes · CFM International CFM56-5B1, CFM56-5B1/2P, CFM56-5B1/3 and 33 more. Effective Apr 13, 2017
- [AD 2016-14-10](https://openairdocs.org/ad/2016-14-10): High-pressure turbine (HPT) disks · CFM International CFM56-3, CFM56-3B and CFM56-3C with STC SE00034EN. Effective Aug 9, 2016
- [AD 2016-02-04](https://openairdocs.org/ad/2016-02-04): Turbine rear frames (TRFs) · CFM International CFM56-5B1, CFM56-5B1/2P, CFM56-5B1/3 and 33 more. Effective Mar 1, 2016
- [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 2013-14-06](https://openairdocs.org/ad/2013-14-06): Hydro-mechanical unit (HMU) fuel control · CFM International CFM56-5, CFM56-5B1, CFM56-5B1/2P and 34 more. Effective Sep 3, 2013
- [AD 2012-02-03](https://openairdocs.org/ad/2012-02-03): Engine · CFM International CFM56-5B1/3, CFM56-5B2/3, CFM56-5B3/3 and 8 more. Effective Mar 15, 2012
- [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 2010-12-03](https://openairdocs.org/ad/2010-12-03): Fan blades · CFM International CFM56-3 and CFM56-3B. Effective Jul 13, 2010
- [AD 2010-09-14](https://openairdocs.org/ad/2010-09-14): Exhaust gas temperature (EGT) · CFM International CFM56-5B1/2P, CFM56-5B1/P, CFM56-5B2/2P and 16 more. Effective Jun 8, 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 2009-18-01](https://openairdocs.org/ad/2009-18-01): LP turbine rear frames · CFM International CFM56-5B1/3, CFM56-5B1/P, CFM56-5B2/3 and 19 more. Effective Oct 1, 2009
- [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 2007-24-04](https://openairdocs.org/ad/2007-24-04): Low pressure turbine (LPT) · CFM International CFM56-5C4/1. Effective Dec 6, 2007
- [AD 2007-03-15](https://openairdocs.org/ad/2007-03-15): Exhaust gas temperature (EGT) harness · CFM International CFM56-5, CFM56-5B1, CFM56-5B1/2P and 34 more. Effective Mar 19, 2007
- [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 2005-10-05](https://openairdocs.org/ad/2005-10-05): Air turbine starters · CFM International CFM56-5, CFM56-5B1, CFM56-5B1/2P and 50 more. Effective Jun 14, 2005
- [AD 97-09-02 R3](https://openairdocs.org/ad/97-09-02-R3): High pressure turbine rotor (HPTR) front shafts · CFM International CFM56-5C2, CFM56-5C3/G and CFM56-5C4. Effective Oct 14, 2004
- [AD 2004-10-13](https://openairdocs.org/ad/2004-10-13): Service main fuel pumps · CFM International CFM56-3, CFM56-5, CFM56-5-A1/F and 4 more. Effective Jun 24, 2004
- [AD 2002-22-12](https://openairdocs.org/ad/2002-22-12): Titeflex hoses · BAE Systems ATP, Avro 146-RJ100A, Avro 146-RJ70A and 122 more. Effective Dec 13, 2002
- [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 2002-02-13](https://openairdocs.org/ad/2002-02-13): Magnetic Drain Plug · CFM International CFM56-5, CFM56-5-A1/F, CFM56-5A4 and 33 more. Effective Mar 21, 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 2001-09-17](https://openairdocs.org/ad/2001-09-17): Fuel Manifold and CJ9L Harness · CFM International CFM56-5C2, CFM56-5C2/4, CFM56-5C2/F and 13 more. Effective May 14, 2001
- [AD 2001-04-06](https://openairdocs.org/ad/2001-04-06): Fan Disk · CFM International CFM56-3, CFM56-3B and CFM56-3C. Effective Apr 4, 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 2000-15-01](https://openairdocs.org/ad/2000-15-01): Fuel Leakage · CFM International CFM56-2, CFM56-2A, CFM56-2B and 39 more. Effective Oct 2, 2000
- [AD 2000-05-22](https://openairdocs.org/ad/2000-05-22): CFM International CFM56-2, CFM56-2A, CFM56-2B and 3 more. Effective May 2, 2000
- [AD 99-06-16](https://openairdocs.org/ad/99-06-16): High Pressure Turbine Rotor (HPTR) Front Air Seal · CFM International CFM56-5, CFM56-5-A1/F, CFM56-5A4 and 3 more. Effective Apr 21, 1999
- [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
- [AD 98-19-20](https://openairdocs.org/ad/98-19-20): Hydromechanical Unit · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B22 and 7 more. Effective Oct 7, 1998
- [AD 98-14-51](https://openairdocs.org/ad/98-14-51): Accessory Gearbox · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B22 and 10 more. Effective Oct 1, 1998
- [AD 98-19-10](https://openairdocs.org/ad/98-19-10): Accessory Gearbox · CFM International CFM56-3, CFM56-3B and CFM56-3C. Effective Sep 28, 1998
- [AD 98-12-32](https://openairdocs.org/ad/98-12-32): High Pressure Turbine Rotor Disks · CFM International CFM56-2, CFM56-2A, CFM56-2B and 3 more. Effective Jul 20, 1998
- [AD 98-10-11](https://openairdocs.org/ad/98-10-11): Accessory Gearbox · CFM International CFM56-3, CFM56-3B, CFM56-3C and 31 more. Effective Jun 3, 1998
- [AD 98-07-02](https://openairdocs.org/ad/98-07-02): Air/oil Seal · CFM International CFM56-3, CFM56-3B and CFM56-3C. Effective Mar 30, 1998
- [AD 98-02-04](https://openairdocs.org/ad/98-02-04): Low Pressure Turbine Case · CFM International CFM56-5B1/2P, CFM56-5B2/2P, CFM56-5B3/2P and 1 more. Effective Mar 23, 1998
- [AD 89-23-06 R1](https://openairdocs.org/ad/89-23-06-R1): Magnetic Chip Detector · CFM International CFM56-2, CFM56-2A, CFM56-3 and 8 more. Effective Jan 28, 1998
- [AD 97-08-01](https://openairdocs.org/ad/97-08-01): Fan Disks · CFM International CFM56-3, CFM56-3B and CFM56-3C. Effective Jun 23, 1997
- [AD 97-06-01](https://openairdocs.org/ad/97-06-01): High Pressure Compressor Rotor (HPCR) Stage 1-2 Spool · CFM International CFM56-5, CFM56-5B1, CFM56-5B1/2P and 28 more. Effective Jun 3, 1997
- [AD 97-05-13](https://openairdocs.org/ad/97-05-13): Air Turbine Engine Starter · CFM International CFM56-5, CFM56-5-A1/F, CFM56-5A4 and 3 more. Effective Jun 3, 1997
- [AD 96-25-11](https://openairdocs.org/ad/96-25-11): Redesigned Fan Blades · CFM International CFM56-3B and CFM56-3C. Effective Jan 29, 1997

### 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 2013-02-02](https://openairdocs.org/ad/2013-02-02) (historical): High-pressure turbine (HPT) disks · CFM International CFM56-3, CFM56-3B and CFM56-3C with STC SE00034EN. Effective Jan 28, 2013
- [AD 2009-01-01](https://openairdocs.org/ad/2009-01-01) (historical): Exhaust gas temperature (EGT) · CFM International CFM56-5B1, CFM56-5B1/2P, CFM56-5B1/P and 22 more. Effective Dec 31, 2008
- [AD 97-09-02 R2](https://openairdocs.org/ad/97-09-02-R2) (historical): Low pressure turbine rotor (LPTR) · CFM International CFM56-5C2, CFM56-5C2/4, CFM56-5C2/F and 9 more. Effective Apr 29, 2003
- [AD 2003-02-04](https://openairdocs.org/ad/2003-02-04) (historical): Exhaust gas temperature (EGT) · CFM International CFM56-5 Series (all). Effective Feb 27, 2003
- [AD 97-09-02 R1](https://openairdocs.org/ad/97-09-02-R1) (historical): High Pressure Turbine rotor (HPTR) front shaft · CFM International CFM56-5C2/G, CFM56-5C2/G4, CFM56-5C3/G and 3 more. Effective Sep 24, 2002
- [AD 2001-17-14](https://openairdocs.org/ad/2001-17-14) (historical): LPT Conical Supports · CFM International CFM56-5C4/1. Effective Sep 7, 2001
- [AD 2001-08-51](https://openairdocs.org/ad/2001-08-51) (historical): Fuel leakage · CFM International CFM56-5 Series (all)
- [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
- [AD 99-08-16](https://openairdocs.org/ad/99-08-16) (historical): CFM International CFM56-2, CFM56-2A, CFM56-2B and 3 more. Effective May 13, 1999
- [AD 97-09-02](https://openairdocs.org/ad/97-09-02) (historical): High/Low Pressure Turbine Rotor · CFM International CFM56-5C2/G, CFM56-5C2/G4, CFM56-5C3/G and 3 more. Effective Jun 30, 1997

All 71: https://openairdocs.org/aircraft/N423UP/ads.md

## Information bulletins (advisory) (4 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-13-33R2](https://openairdocs.org/saib/NE-13-33R2): Turbine Engine Air Inlet Section - LP Turbine, Stage 1 Nozzle Vanes. Issued Jan 28, 2014
- [SAIB NE-12-29](https://openairdocs.org/saib/NE-12-29): Engine Fuel Distribution  CFM56-5B LPTACC Fuel Manifold. Issued Apr 27, 2012
- [SAIB NE-06-02](https://openairdocs.org/saib/NE-06-02): . Issued Oct 18, 2005
- [SAIB NE-13-33R1](https://openairdocs.org/saib/NE-13-33R1) (historical): Turbine Engine Air Inlet Section - LP Turbine, Stage 1 Nozzle Vanes. Issued Jun 24, 2013
- [SAIB NE-13-33](https://openairdocs.org/saib/NE-13-33) (historical): Turbine Engine Air Inlet Section - LP Turbine, Stage 1 Nozzle Vanes. Issued May 13, 2013
- [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 N423UP.

## FAA accident and incident reports

None matched to N423UP.

## Service difficulty reports (261, newest 50)

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 IPXA2026072031433](https://openairdocs.org/sdr/IPXA2026072031433), Jul 18, 2026: ANTENNA. BROKEN. ELT FOUND WITH BROKEN ANTENNA MOUNTING. R & R ELT PER AMM 25-60-00
- [SDR IPXA2026060408199](https://openairdocs.org/sdr/IPXA2026060408199), Jun 4, 2026: FLAP. DAMAGED. ACCOMPLISHED REPAIR ON FAULT #T3F18E008THNS, LT OUTBD AFT FLAP DAMAGE.
- [SDR IPXA2026060408251](https://openairdocs.org/sdr/IPXA2026060408251), Jun 4, 2026: FLAP. DAMAGED. ACCOMPLISHED REPAIR ON FAULT #T3F18E008THPU, LT OUTBD AFT FLAP UPPER SURFACE DAMAGE.
- [SDR IPXA2026052861067](https://openairdocs.org/sdr/IPXA2026052861067), May 19, 2026: FLOOR PANEL. DAMAGED. MAIN CARGO COMPT FLOOR PANEL 232XWF HAS EDGE DAMAGE. FABRICATION OF MAIN CARGO COMPT FLOOR PANEL 232XWF IAW SREO-9692-REQ001. REVIEWED.
- [SDR IPXA2026060906876](https://openairdocs.org/sdr/IPXA2026060906876), May 15, 2026: TEE ANGLE. CORRODED. RH WING TO BODY T-CHORD AT STA 1060 IS CORRODED. INSTALLED NEW T-CHORD IAW SRM B757-200 TASK: 51-40-02
- [SDR IPXA2026052305463](https://openairdocs.org/sdr/IPXA2026052305463), May 15, 2026: TEE FITTING. CORRODED. RH LOWER W TO B PANEL#198AR STRUCTURAL T-CHORD CORROSION PRESENT INSTALLED T-CHORD LOCATED RBL65 AND BTW STA 1037 TO 1060 WTB. IAW B757-200 SRM 51-40-02. REVIEW
- [SDR IPXA2026052004061](https://openairdocs.org/sdr/IPXA2026052004061), May 15, 2026: ANGLE. BROKEN. MAIN CARGO DOOR AFT ANGLE ASSY IS BROKEN. ANGLE MAIN CARGO DOOR IAW SRM 51-40-02-0G-0.
- [SDR IPXA2026053090655](https://openairdocs.org/sdr/IPXA2026053090655), May 14, 2026: SUPPORT. CORRODED. AFT CARGO SUPPORT CAPSTRIP AT STA 1560 TO 1580 LBL 45.5 IS CORRODED. INSTALLED NEW SUPPORT CAPSTRIP AT STA 1560 TO 1580 LBL 45.5 IAW B757 SRM 51-40-02.
- [SDR IPXA2026061072557](https://openairdocs.org/sdr/IPXA2026061072557), May 13, 2026: SKIN. DAMAGED. MAJOR REPAIR, NR 1 PYLON RT SIDE BEHIND PANEL ATTACHMENT BRACKET HAS A HOLE IN SIDE SKIN RII REQUIRMENTS COMPLETED IAW UPS GMM 04-02 MAJOR REPAIRS REQUIREMENT 5
- [SDR IPXA2026060253330](https://openairdocs.org/sdr/IPXA2026060253330), May 12, 2026: BULKHEAD. GOUGED. MAJOR REPAIR, NR 2 PYLON AFT BULKHEAD LT SIDE REINFORCMENT FITTING IS GOUGED COMPLIED WITH EO-97567-REQ1 AND VT-MAE EA 757-5453-27-A4500, REV.-
- [SDR IPXA2026051947707](https://openairdocs.org/sdr/IPXA2026051947707), May 12, 2026: BRACKET. CRACKED. LEFT PYLON REAR STRUT FAIRING ASSY, INNER CLIP SUPPORT (1EA) IS CRACKED. INSTALLED NEW BRACKET ON INNER CLIP SUPPORT 1 EA LT PYLON REAR STRUT FAIRING ASSY IAW S
- [SDR IPXA2026051339720](https://openairdocs.org/sdr/IPXA2026051339720), May 12, 2026: ANGLE. CRACKED. NR 2 PYLON TOP I/B SIDE AT NAC STA 201.02 HAS A CRACKED ANGLE. INSTALLED CLIP AT #2 PYLON TOP I/B SIDE AT NAC STA 201.02 I.A.W. SRM 51-40-02-0G.
- [SDR IPXA2026052632651](https://openairdocs.org/sdr/IPXA2026052632651), May 11, 2026: SKIN. DENTED. ***MAJOR REPAIR*** RH LOWER HALF OF EXTERNAL FUSELAGE SKIN BETWEEN STA 740 AND 760 BETWEEN STR S-20R AND S-21R HAS 2 CREASES NEAR PANEL 192AR VERIFIED COMPLIED 
- [SDR IPXA2026052532618](https://openairdocs.org/sdr/IPXA2026052532618), May 11, 2026: SEAT TRACK. CORRODED. MAIN CARGO DECK STA 1681 LBL 24, SEAT TRACK ATTACH PLATE IS CORRODED. INSTALLED NEW SEAT TRACK 1EA, AGLE REPAIR 1EA, STRAP REPAIR 1EA FROM MAIN CARGO DECK STA 1
- [SDR IPXA2026051321813](https://openairdocs.org/sdr/IPXA2026051321813), May 11, 2026: ANGLE. CRACKED. NR 1 ENG MID SPAR PYLON LOWER AREA ON NAC STA 201.02 HAS A CRACKED ANGLE. INSTALLED NEW ANGEL AND RE-INSTALLED SERVICABLE FIRE SEAL I.A.W B757-200 SRM 51-40-02-
- [SDR IPXA2026051733498](https://openairdocs.org/sdr/IPXA2026051733498), May 11, 2026: FLOORBOARD. CORRODED. MAJOR REPAIR. MAIN CARGO DECK UNDER FLOORBOARD PANEL 232XXF HAS MULTIPLE SHANKS/DAMAGED DOME NUTPLATES. FABRICATED FLOORBPARD 232XXF IAW SREO-9692-REQ001
- [SDR IPXA2026051921706](https://openairdocs.org/sdr/IPXA2026051921706), May 11, 2026: ANGLE. CRACKED. NR 2 ENG MID SPAR LOWER AREA ON NAC STA 201.02 HAS A CRACKED ANGLE. LOCATED AND DRILLED NEW ANGLE. NR 2 ENG MID SPAR LOWER AREA ON NAC STA 201.02 IAW SRM 51-40-
- [SDR IPXA2026051226988](https://openairdocs.org/sdr/IPXA2026051226988), May 11, 2026: FLOORBEAM. CRACKED. MCD FLOORBOARD SUPPORT BRACKET AT STA 900 BETWEEN RBL 24-45 IS DAMAGED. 33-010. INSTALLED FLOORBOARD PLATE SUPPORT AT MCD FLOORBOARD SUPPORT BRACKET AT STA 900 
- [SDR IPXA2026060519182](https://openairdocs.org/sdr/IPXA2026060519182), May 10, 2026: NOZZLE. CRACKED. AIR DUCT OUTLET CRACKED AT STA 1200-1220, LEFT SIDE AFT PIT. INSTALLED AIR DUCT OUTLET FROM STA 1200-1220, LEFT SIDE AFT PIT IAW B757-200 SRM 51-40-02-0G-0
- [SDR IPXA2026052719547](https://openairdocs.org/sdr/IPXA2026052719547), May 10, 2026: SPLICE PLATE. CORRODED. MAJOR REPAIR, MAIN DECK FLOOR STRUCTURE, SHEAR SPLICE PLATE HAS EXFOLIATED CORROSION, UNDERNEATH PANEL 231XFF FROM BSTA 500 TO BSTA 540 AT LBL 45.5. ACCOMPLISH 
- [SDR IPXA2026060519218](https://openairdocs.org/sdr/IPXA2026060519218), May 10, 2026: NOZZLE. CRACKED. APG, AIR DUCT OUTLET CRACKED AT STA 1240-1260, LEFT SIDE AFT PIT. INSTALLED AIR DUCT OUTLET FROM STA 1240-1260, LEFT SIDE AFT PIT IAW SRM 51-40-02-0G-0.
- [SDR IPXA2026060519227](https://openairdocs.org/sdr/IPXA2026060519227), May 10, 2026: NOZZLE. CRACKED. APG, AIR DUCT OUTLET CRACKED AT STA 1280-1300, LEFT SIDE AFT PIT. INSTALLED AIR DUCT OUTLET FROM STA 1280-1300, LEFT SIDE AFT PIT IAW SRM 51-40-02-0G-0
- [SDR IPXA2026060519159](https://openairdocs.org/sdr/IPXA2026060519159), May 10, 2026: NOZZLE. CRACKED. APG, AIR DUCT OUTLET CRACKED AT STA 1320-1340, LEFT SIDE AFT PIT. INSTALLED AIR DUCT OUTLET FROM STA 1320-1340, LEFT SIDE AFT PIT IAW B757-200 SRM 51-40-02-0G-0
- [SDR IPXA2026060519206](https://openairdocs.org/sdr/IPXA2026060519206), May 10, 2026: NOZZLE. CRACKED. APG AIR DUCT OUTLET CRACKED AT STA 1520-1540, LEFT SIDE AFT PIT. INSTALLED AIR DUCT OUTLET FROM STA 1520-1540, LEFT SIDE AFT PIT IAW B757-200 SRM 51-40-02-0G-0
- [SDR IPXA2026060519208](https://openairdocs.org/sdr/IPXA2026060519208), May 10, 2026: NOZZLE. CRACKED. APG AIR DUCT OUTLET CRACKED AT STA 1480-1500 LEFT SIDE AFT PIT. INSTALLED AIR DUCT OUTLET FROM STA 1480-1500, LEFT SIDE AFT PIT IAW SRM 51-40-02-0G-0
- [SDR IPXA2026060519284](https://openairdocs.org/sdr/IPXA2026060519284), May 10, 2026: NOZZLE. CRACKED. APG AIR DUCT OUTLET CRACKED AT STA 620-640, RIGHT SIDE FORWARD PIT. INSTALLED AIR DUCT OUTLET FROM BS 620-640, RIGHT SIDE FWD PIT IAW SRM 51-40-02-0G-0.
- [SDR IPXA2026051914162](https://openairdocs.org/sdr/IPXA2026051914162), May 10, 2026: COVER. CRACKED. RIGHT SLAT #7 SLAT TRACK COVER PALTE CRACKED, APPROX STA FSS 897. DOT AA015. INSTALLED NEW PART IAW B757-200, SRM 51-40-02-0G-0. INSTALLATION OF NEW RIGHT SLAT 
- [SDR IPXA2026051914090](https://openairdocs.org/sdr/IPXA2026051914090), May 10, 2026: COVER. CRACKED. RIGHT SLAT #8 SLAT TRACK COVER PLATE CRACKED, APPROX STA FSS 550. . INSTALLED NEW PART IAW B757-200, SRM 51-40-02-0G-0. INSTALLATION OF NEW RIGHT SLAT #8 SLAT T
- [SDR IPXA2026051913974](https://openairdocs.org/sdr/IPXA2026051913974), May 10, 2026: COVER. CRACKED. LEFT LEADING EDGE #3 SLAT INBD SLAT TRACK COVER PLATE CRACKED. INSTALLED NEW PART IAW B757-200, SRM 51-40-02-0G-0. INSPECTED AND VERIFIED INSTALLATION OF NEW LE
- [SDR IPXA2026051913969](https://openairdocs.org/sdr/IPXA2026051913969), May 10, 2026: COVER. CRACKED. LEFT LEADING EDGE NR 3 SLAT OTBD SLAT TRACK COVER PLATE CRACKED. INSTALLED NEW PART IAW SRM 51-40-02-0G-0.
- [SDR IPXA2026051914146](https://openairdocs.org/sdr/IPXA2026051914146), May 10, 2026: COVER. CRACKED. RIGHT SLAT #8 SLAT TRACK COVER PLATE CRACKED APPROX STA FSS 456. DOT AA014. INSTALLED NEW PART IAW B757-200, SRM 51-40-02-0G-0. INSTALLATION OF NEW RIGHT SLAT #
- [SDR IPXA2026051105596](https://openairdocs.org/sdr/IPXA2026051105596), May 9, 2026: ANGLE. CORRODED. BS 1790 - 1820, RBL 3R, APU INTAKE DOOR SURROUND UPPER ANGLE IS CORRODED VERIFIED REMOVAL OF UPPER ANGLE AT FS 1790 - 1820 RBL S-3R IAW SRM 51-40-02-0G.
- [SDR IPXA2026051005536](https://openairdocs.org/sdr/IPXA2026051005536), May 9, 2026: STRAP. CORRODED. BS 1825 APU INTAKE DOOR SURROUND AFT STRAP HAS CORROSION ON AN EXISTING REPAIR ACCOMPLISH THE REPAIR IAW SRM 53-80-15-2R-1, DETAIL I.
- [SDR IPXA2026052099347](https://openairdocs.org/sdr/IPXA2026052099347), May 9, 2026: BRACKET. BROKEN. ACCESS DOOR 313AL LT AND RT LATCH STOPS AT THE CUT-OUT HAS 4EA BRACKETS CORRODED. INSTALLED 4(EA) GUSSTE BRACKETS, RH & LH LATCH STOPS PAT AND DEFLECT STRAP IAW
- [SDR IPXA2026051099404](https://openairdocs.org/sdr/IPXA2026051099404), May 9, 2026: TRAY. CRACKED. APU FIRE EXTINGUISHER BOTTLE TRAY IS CRACKED. INSTALLED NEW BRACKET (1 EA), ANGLES (2 EA) AND BRACKETS (3 EA) FOR APU EXTINGUISHER BOTTLE IAW B757-200 SRM 51-40
- [SDR IPXA2026060195355](https://openairdocs.org/sdr/IPXA2026060195355), May 8, 2026: TEE ANGLE. CORRODED. WTB T-CHORD STA 1037 AND LBL10 WITH CORROSION AROUND THE NUTPLATE HOLE(S) INSTALLED T-CHORD IAW B757-200, SRM 51-40-02-0G-0
- [SDR IPXA2026050995485](https://openairdocs.org/sdr/IPXA2026050995485), May 8, 2026: INTERCOSTAL. CORRODED. WTB INTERCOSTAL BTW STA 1037 TO 1060 AND LBL 37 WITH CORROSION. INSTALLED NEW INTERCOSTAL AT BTW STA 1037 TO 1060 AND LBL 5 IAW B757-200 SRM 51-40-02.
- [SDR IPXA2026050995487](https://openairdocs.org/sdr/IPXA2026050995487), May 8, 2026: INTERCOSTAL. CORRODED. WTB INTERCOSTAL BTW LBL 19 TO LBL 37 AND STA 1040 WITH CORROSION. INSTALLED NEW INTERCOSTAL 1 EA BTW LBL 19 TO LBL 37 AND STA 1040 IAW B757-200 SRM 51-40-02-0G.
- [SDR IPXA2026052195286](https://openairdocs.org/sdr/IPXA2026052195286), May 8, 2026: INTERCOSTAL. CORRODED. T: WTB INTERCOSTAL STA 1040 AND BTW RBL 45 TO RBL 60 WITH CORROSION. INSTALLED NEW INTERCOSTAL STA 1040 AND BTW RBL 45 TO RBL 60 1 EA IAW B757-200 SRM 51-40-02-
- [SDR IPXA2026052581222](https://openairdocs.org/sdr/IPXA2026052581222), May 8, 2026: SUPPORT CHANNEL. CRACKED. LH MLG WW, TANG DOOR FWD CUTOUT, STA 1100 HAS A ANGLE BRACKET CRACKED. DOT 103-40. INSTALLED SEAL RETAINER CHANNEL AND ANGLE SUPPORT IAW SRM B757-200 TASK: 51-4
- [SDR IPXA2026052380864](https://openairdocs.org/sdr/IPXA2026052380864), May 8, 2026: FITTING. CORRODED. FWD CARGO DOOR CUTOUT, BTWN BS 560 TO 580, THROUGH I/B SCUFF PLATE, UNDER CLS ADAPTER FITTING, ATTACHMNENT FITTING HAS EXFOLIATION CORROSION. INSTALLED NEW FITT
- [SDR IPXA2026051095297](https://openairdocs.org/sdr/IPXA2026051095297), May 8, 2026: INTERCOSTAL. CORRODED. WTB INTERCOSTAL BTW STA 1037 TO 1060 AND RBL 60 WITH CORROSION. INSTALLED NUT PLATES AND NEW INTERCOSTAL IAW B757-200PF, SRM 51-40-02. REVIEWED
- [SDR IPXA2026050995446](https://openairdocs.org/sdr/IPXA2026050995446), May 8, 2026: INTERCOSTAL. CORRODED. FAULT: WTB INTERCOSTAL BTW STA 1037 TO 1060 AND LBL 19 WITH CORROSION AROUND NUTPLATE HOLE(S). INSTALLED NEW INTERCOSTAL 1 EA BTW STA 1037 TO 1060 AND LBL 19 IA
- [SDR IPXA2026052481208](https://openairdocs.org/sdr/IPXA2026052481208), May 8, 2026: SUPPORT CHANNEL. CRACKED. RH MLG WW, TANG DOOR FWD CUTOUT, STA 1100 HAS BRACKETS CRACKED (3EA). INSTALLED BRACKETS (2EA) AND SUPPORT CHANEL (1EA) AND RETAINER IAW SRM B757-200 TASK: 51-4
- [SDR IPXA2026050995372](https://openairdocs.org/sdr/IPXA2026050995372), May 8, 2026: INTERCOSTAL. CORRODED. WTB INTERCOSTAL BTW STA 1037 TO 1060 AND LBL 5 WITH CORROSION AROUND NUTPLATE HOLE(S). INSTALLATION OF NEW INTERCOSTAL AT BTW STA 1037 TO 1060 AND LBL 5 IAW B75
- [SDR IPXA2026051580868](https://openairdocs.org/sdr/IPXA2026051580868), May 8, 2026: SCUFF PLATE. CRACKED. FWD CARGO DOOR CUTOUT, CLOSE TO STA 560, FWD LOWER CORNER, O/B SCUFF PLATE HAS A CRACK. INSTALLED NEW PLATE SCUFF ON FWD CARGO DOOR IAW SRM 51-40-02. USED SAME 
- [SDR IPXA2026060970211](https://openairdocs.org/sdr/IPXA2026060970211), May 7, 2026: PANEL. DELAMINATED. COMPOSITE DAMAGE ON INTERIOR OF PANEL BETWEEN STA 1941 AND STA 1963.8 ACCOMPLISH REPAIR IAW SRM REV 124 CHAPTER 51-70-10-2R-4, USING SRM 51-70-10-2R-0 REPAIR GE
- [SDR IPXA2026060872812](https://openairdocs.org/sdr/IPXA2026060872812), May 7, 2026: PANEL. DEFORMED. THE R/H LWR FWD TORQUE BOX PANEL HAS EXCESSIVE HAIL DAMAGE AND MULTIPLE DISBONDS / DELAMINATIONS ACROSS THE ENTIRE SURFACE OF THE PANEL FROM TOP TO BOTTOM. INST
- [SDR IPXA2026060473078](https://openairdocs.org/sdr/IPXA2026060473078), May 7, 2026: PANEL. DAMAGED. THE L/H LWR FWD TORQUE BOX PANEL HAS MULTIPLE DELAMINATIONS / DISBONDS (3EA TOTAL) NEAR THE TOP AND BOTTOM OF THE PANEL. ALL DAMAGE MARKED IN WHITE. INSTALLED N
- [SDR IPXA2026051070809](https://openairdocs.org/sdr/IPXA2026051070809), May 7, 2026: SKIN. DENTED. RH FUSELAGE HAS A DENT STA#1355 BETWEEN RBL S-13R & S-14R #58-01. DISCOVERED IN LIMIT DENT INFO DEFERRED IAW UPS EO97560-REQ1, IN LEAVE AS IS CONDITION.

All 261: https://openairdocs.org/aircraft/N423UP/reports.md

## STCs that may be installed (OpenAirDocs) (7)

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 series)

- [STC SE04840NY](https://openairdocs.org/stc/SE04840NY): Installation of HarcoSemco Exhaust Gas Temperature (EGT) Electrical Harnesses in CFM56-7 engine. Kilroy Aviation LLC. Lists CFM56-7B20
- [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. Lists CFM56-7B20
- [STC SE00032EN](https://openairdocs.org/stc/SE00032EN): Installation of Pratt & Whitney (P&W) Global Material Solutions (GMS) CFM56-3 Fan/Booster Module. Pratt & Whitney. Lists CFM56-3
- [STC SE00033EN](https://openairdocs.org/stc/SE00033EN): Installation of Pratt & Whitney (P&W) Global Material Solutions (GMS) CFM56-3 High Pressure Compressor Module. Pratt & Whitney. Lists CFM56-3
- [STC SE00034EN](https://openairdocs.org/stc/SE00034EN): Installation of Pratt & Whitney (P&W) Global Material Solutions (GMS) CFM56-3 High Pressure Turbine Module. Pratt & Whitney. Lists CFM56-3
- [STC SE00035EN](https://openairdocs.org/stc/SE00035EN): Installation of Pratt & Whitney (P&W) Global Material Solutions (GMS) CFM56-3 Low Pressure Turbine Module. Pratt & Whitney. Lists CFM56-3
- [STC SE00822CH](https://openairdocs.org/stc/SE00822CH): Install AeroControlex P/N 2604880-001 variable stator feedback control cable and P/N 2604880-002 variable bleed valve feedback control cable on CFM International engines. AeroControlex Group TransDigm Inc. Lists CFM56-2

## Related

- Other Boeing 757-24APF aircraft: https://openairdocs.org/model/boeing-757-24apf/aircraft.md
- The CFM International CFM56 series engine: https://openairdocs.org/engine/cfm-international-cfm56-series.md

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