# N450UP: 1995 Boeing 757-24APF

- Status: Valid registration
- Airframe: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (registry code 1384969, 178 seats)
- Engine: [Rolls-Royce RB-211 series](https://openairdocs.org/engine/rolls-royce-rb-211-series) (registry code 54555)
- Serial number: 25472
- Year built: 1995
- Type: Fixed wing multi engine
- Engine type: Turbo-fan
- Airworthiness: Standard, transport
- Airworthiness date: February 8, 1995
- Certificate issued: February 10, 1995
- Expires: August 31, 2029
- Mode S code: A573EC
- 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=450UP
- Page: https://openairdocs.org/aircraft/N450UP

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 Rolls-Royce RB-211 model are included.

## ADs that may apply (OpenAirDocs): 140 in force

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

None in force.

### Matched by engine (Rolls-Royce RB-211 series)

- [AD 2026-20-11](https://openairdocs.org/ad/2026-20-11): Turbine Engine Compressor Section · Rolls-Royce Deutschland RB211 Trent 768-60, RB211 Trent 772-60 and RB211 Trent 772B-60. Effective Nov 17, 2026
- [AD 2026-18-04](https://openairdocs.org/ad/2026-18-04): Turbine Engine Compressor Section · Rolls-Royce Deutschland RB211 Trent 768-60, RB211 Trent 772-60 and RB211 Trent 772B-60. Effective Oct 16, 2026
- [AD 2026-18-52](https://openairdocs.org/ad/2026-18-52): Turbine Engine Oil System · Rolls-Royce Deutschland RB211-Trent 875-17, RB211-Trent 877-17, RB211-Trent 884-17 and 4 more. Effective Sep 21, 2026
- [AD 2026-18-51](https://openairdocs.org/ad/2026-18-51): Turbine Engine Oil System · Rolls-Royce Deutschland RB211 Trent 768-60, RB211 Trent 772-60 and RB211 Trent 772B-60. Effective Sep 21, 2026
- [AD 2026-10-06](https://openairdocs.org/ad/2026-10-06): Turbine Section · Rolls-Royce Deutschland RB211 Trent 768-60, RB211 Trent 772-60 and RB211 Trent 772B-60. Effective Jun 12, 2026
- [AD 2025-05-04](https://openairdocs.org/ad/2025-05-04): Engine Drains · Rolls-Royce Deutschland RB211-TRENT 970-84 and RB211-TRENT 972-84. Effective Apr 1, 2025
- [AD 2024-10-06](https://openairdocs.org/ad/2024-10-06): Engine (Turbine/Turboprop) · Rolls-Royce Deutschland RB211-535E4-37, RB211-535E4-B-37 and RB211-535E4-C-37. Effective Jun 27, 2024
- [AD 2024-07-04](https://openairdocs.org/ad/2024-07-04): Turbine Engine Compressor Section · Rolls-Royce Deutschland RB211-524H-36 and RB211-524H-T-36. Effective Apr 15, 2024
- [AD 2023-23-13](https://openairdocs.org/ad/2023-23-13): Turbine Engine Compressor Section · Rolls-Royce Deutschland RB211-Trent 875-17, RB211-Trent 877-17, RB211-Trent 884-17 and 4 more. Effective Jan 4, 2024
- [AD 2023-22-01](https://openairdocs.org/ad/2023-22-01): Turbine Section · Rolls-Royce Deutschland RB211-524G2-19, RB211-524G2-T-19, RB211-524G3-19 and 5 more. Effective Dec 26, 2023
- [AD 2023-21-03](https://openairdocs.org/ad/2023-21-03): Turbine Engine Compressor Section · Rolls-Royce Deutschland RB211-524G2-19, RB211-524G2-T-19, RB211-524G3-19 and 5 more. Effective Dec 11, 2023
- [AD 2023-18-05](https://openairdocs.org/ad/2023-18-05): Turbine Engine Compressor Section · Rolls-Royce Deutschland RB211-535C-37. Effective Oct 30, 2023
- [AD 2023-18-01](https://openairdocs.org/ad/2023-18-01): Engine Fuel Pump · Rolls-Royce Deutschland RB211-Trent 875-17, RB211-Trent 877-17, RB211-Trent 884-17 and 4 more. Effective Oct 30, 2023
- [AD 2023-17-12](https://openairdocs.org/ad/2023-17-12): Turbine Engine Compressor Section · Rolls-Royce Deutschland RB211 Trent 768-60, RB211 Trent 772-60 and RB211 Trent 772B-60. Effective Oct 26, 2023
- [AD 2022-09-10](https://openairdocs.org/ad/2022-09-10): Turbine Engine Compressor Section · Rolls-Royce Deutschland RB211-Trent 875-17, RB211-Trent 877-17, RB211-Trent 884-17 and 4 more. Effective Jun 23, 2022
- [AD 2021-08-01](https://openairdocs.org/ad/2021-08-01): Turbine Engine Combustion Section · Rolls-Royce Deutschland RB211 Trent 768-60, RB211 Trent 772-60 and RB211 Trent 772B-60. Effective Apr 30, 2021
- [AD 2020-25-04](https://openairdocs.org/ad/2020-25-04): Engine Fireseals · Rolls-Royce Deutschland RB211-Trent 875-17, RB211-Trent 877-17, RB211-Trent 884-17 and 4 more. Effective Jan 8, 2021
- [AD 2020-08-03](https://openairdocs.org/ad/2020-08-03): Turbine Engine Compressor Section · Rolls-Royce Deutschland RB211-535E4-37, RB211-535E4-B-37, RB211-535E4-B-75 and 1 more. Effective May 18, 2020
- [AD 2019-11-07](https://openairdocs.org/ad/2019-11-07): Turbine Engine Compressor Section · Rolls-Royce RB211-524G3-19, RB211-524G3-T-19, RB211-524H-36 and 3 more. Effective Jun 28, 2019
- [AD 2018-18-15](https://openairdocs.org/ad/2018-18-15): Turbine Engine Compressor Section · Rolls-Royce RB211-Trent 875-17, RB211-Trent 877-17, RB211-Trent 884-17 and 4 more. Effective Nov 1, 2018
- [AD 2018-18-06](https://openairdocs.org/ad/2018-18-06): Turbine Section · Rolls-Royce RB211-TRENT 970-84, RB211-TRENT 970B-84, RB211-TRENT 972-84 and 4 more. Effective Sep 20, 2018
- [AD 2017-24-08](https://openairdocs.org/ad/2017-24-08): Fuel control/Turbine engines · Rolls-Royce RB211-535E4-37, RB211-535E4-B-37 and RB211-535E4-C-37. Effective Jan 16, 2018
- [AD 2017-19-16](https://openairdocs.org/ad/2017-19-16): Turbine Engine Compressor Section · Rolls-Royce RB211 Trent 553-61, RB211 Trent 553A2-61, RB211 Trent 556-61 and 5 more. Effective Oct 13, 2017
- [AD 2017-10-13](https://openairdocs.org/ad/2017-10-13): Low-pressure (LP) fuel return tube · Rolls-Royce RB211 Trent 768-60, RB211 Trent 772-60 and RB211 Trent 772B-60. Effective Jul 10, 2017
- [AD 2017-10-06](https://openairdocs.org/ad/2017-10-06): Turbine Engine Compressor Section · Rolls-Royce RB211 Trent 768-60, RB211 Trent 772-60 and RB211 Trent 772B-60. Effective Jun 9, 2017
- [AD 2017-08-11](https://openairdocs.org/ad/2017-08-11): Engine · Rolls-Royce RB211-Trent 875-17, RB211-Trent 877-17, RB211-Trent 884-17 and 4 more. Effective May 30, 2017
- [AD 2017-08-10](https://openairdocs.org/ad/2017-08-10): Engine · Rolls-Royce RB211-TRENT 970-84, RB211-TRENT 970B-84, RB211-TRENT 972-84 and 4 more. Effective May 9, 2017
- [AD 2017-03-03](https://openairdocs.org/ad/2017-03-03): Engine Oil Cooler · Rolls-Royce RB211 Trent 553-61, RB211 Trent 553A2-61, RB211 Trent 556-61 and 5 more. Effective Mar 17, 2017
- [AD 2016-25-10](https://openairdocs.org/ad/2016-25-10): High-pressure compressor (HPC) · Rolls-Royce RB211-Trent 875-17, RB211-Trent 877-17, RB211-Trent 884-17 and 4 more. Effective Jan 20, 2017
- [AD 2016-08-07](https://openairdocs.org/ad/2016-08-07): LPT support roller bearing · Rolls-Royce RB211-22B-02, RB211-22B/MOD 72-8700, RB211-524B-02 and 22 more. Effective May 16, 2016
- [AD 2016-04-13](https://openairdocs.org/ad/2016-04-13): Sealing sleeve · Rolls-Royce RB211 Trent 768-60, RB211 Trent 772-60 and RB211 Trent 772B-60. Effective Apr 19, 2016
- [AD 2016-03-04](https://openairdocs.org/ad/2016-03-04): Life-limited rotating parts · Rolls-Royce RB211-535E4-37, RB211-535E4-B-37 and RB211-535E4-C-37. Effective Mar 15, 2016
- [AD 2015-16-03](https://openairdocs.org/ad/2015-16-03): High-pressure turbine (HPT) blades · Rolls-Royce RB211-524B-02, RB211-524B2-19, RB211-524B3-02 and 6 more. Effective Sep 15, 2015
- [AD 2015-07-01](https://openairdocs.org/ad/2015-07-01): Low-pressure turbine (LPT) stage 3 turbine blades · Rolls-Royce RB211-524B-02, RB211-524B-B-02, RB211-524B2-19 and 4 more. Effective May 8, 2015
- [AD 2015-04-06](https://openairdocs.org/ad/2015-04-06): Electronic engine control (EEC) · Rolls-Royce RB211-Trent 875-17, RB211-Trent 877-17, RB211-Trent 884-17 and 4 more. Effective Apr 8, 2015
- [AD 2015-02-20](https://openairdocs.org/ad/2015-02-20): Intermediate-pressure compressor (IPC) rotor shaft · Rolls-Royce RB211-Trent 875-17, RB211-Trent 877-17, RB211-Trent 884-17 and 22 more. Effective Mar 11, 2015
- [AD 2014-14-01](https://openairdocs.org/ad/2014-14-01): Electronic engine control (EEC) · Rolls-Royce RB211 Trent 768-60, RB211 Trent 772-60 and RB211 Trent 772B-60. Effective Aug 15, 2014
- [AD 2014-13-02](https://openairdocs.org/ad/2014-13-02): LP turbine bearing support and exhaust case assembly · Rolls-Royce RB211-Trent 875-17, RB211-Trent 877-17, RB211-Trent 884-17 and 4 more. Effective Aug 5, 2014
- [AD 2014-13-03](https://openairdocs.org/ad/2014-13-03): Electronic engine control (EEC) software · Rolls-Royce RB211 Trent 553-61, RB211 Trent 553A2-61, RB211 Trent 556-61 and 5 more. Effective Jul 14, 2014
- [AD 2013-23-17](https://openairdocs.org/ad/2013-23-17): High-pressure (HP) and intermediate-pressure (IP) turbine discs · Rolls-Royce RB211-535E4-37, RB211-535E4-B-37, RB211-535E4-C-37 and 3 more. Effective Dec 11, 2013
- [AD 2013-23-12](https://openairdocs.org/ad/2013-23-12): Low-pressure (LP) compressor fan blade set · Rolls-Royce RB211 Trent 553-61, RB211 Trent 553A2-61, RB211 Trent 556-61 and 5 more. Effective Dec 11, 2013
- [AD 2013-19-21](https://openairdocs.org/ad/2013-19-21): Cracks in the HP compressor stage 1 and 2 disc posts · Rolls-Royce RB211-524G2-T-19, RB211-524G3-T-19, RB211-524H-T-36 and 19 more. Effective Nov 6, 2013
- [AD 2013-16-23](https://openairdocs.org/ad/2013-16-23): Cracked and distorted FCL metering panel · Rolls-Royce RB211-524B-02, RB211-524B2-19, RB211-524B3-02 and 13 more. Effective Oct 8, 2013
- [AD 2013-05-04](https://openairdocs.org/ad/2013-05-04): Piston ring · Rolls-Royce RB211-TRENT 970-84, RB211-TRENT 970B-84, RB211-TRENT 972-84 and 4 more. Effective Apr 30, 2013
- [AD 2013-04-01](https://openairdocs.org/ad/2013-04-01): Thrust reverser units (TRUs) · Rolls-Royce RB211-524D4-19, RB211-524D4-39, RB211-524D4-B-19 and 11 more. Effective Mar 8, 2013
- [AD 2012-25-09](https://openairdocs.org/ad/2012-25-09): Intermediate-pressure (IP) turbine discs · Rolls-Royce RB211-524G2-19, RB211-524G2-T-19, RB211-524G3-19 and 10 more. Effective Feb 6, 2013
- [AD 2013-02-03](https://openairdocs.org/ad/2013-02-03): Fuel oil heat exchanger (FOHE) · Rolls-Royce RB211-TRENT 970-84, RB211-TRENT 970B-84, RB211-TRENT 972-84 and 4 more. Effective Jan 24, 2013
- [AD 2012-25-08](https://openairdocs.org/ad/2012-25-08): High pressure/ intermediate pressure (HP/IP) turbine bearing support oil feed tube outer heat shield · Rolls-Royce RB211 Trent 768-60, RB211 Trent 772-60 and RB211 Trent 772B-60. Effective Jan 10, 2013
- [AD 2012-24-05](https://openairdocs.org/ad/2012-24-05): Oil transfer tube · Rolls-Royce RB211-TRENT 970-84 and RB211-TRENT 972-84. Effective Dec 26, 2012
- [AD 2012-18-07](https://openairdocs.org/ad/2012-18-07): Low-pressure (LP) compressor blades · Rolls-Royce RB211-Trent 875-17, RB211-Trent 877-17, RB211-Trent 884-17 and 4 more. Effective Oct 29, 2012

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

- [AD 2021-26-11](https://openairdocs.org/ad/2021-26-11) (historical): Engine Fuel Pump · Rolls-Royce Deutschland RB211-Trent 875-17, RB211-Trent 877-17, RB211-Trent 884-17 and 4 more. Effective Jan 3, 2022
- [AD 2020-24-08](https://openairdocs.org/ad/2020-24-08) (historical): Turbine Section · Rolls-Royce Deutschland RB211 Trent 768-60, RB211 Trent 772-60 and RB211 Trent 772B-60. Effective Jan 4, 2021
- [AD 2020-15-07](https://openairdocs.org/ad/2020-15-07) (historical): Turbine Section · Rolls-Royce Deutschland RB211-524G2-19, RB211-524G2-T-19, RB211-524G3-19 and 5 more. Effective Aug 4, 2020
- [AD 2020-06-16](https://openairdocs.org/ad/2020-06-16) (historical): Turbine Engine Compressor Section · Rolls-Royce Deutschland RB211 Trent 768-60, RB211 Trent 772-60 and RB211 Trent 772B-60. Effective May 5, 2020
- [AD 2019-05-02](https://openairdocs.org/ad/2019-05-02) (historical): Powerplant/Engine Drains · Rolls-Royce RB211-TRENT 970-84 and RB211-TRENT 972-84. Effective Mar 27, 2019
- [AD 2017-22-13](https://openairdocs.org/ad/2017-22-13) (historical): Powerplant/Engine Drains · Rolls-Royce RB211-TRENT 970-84 and RB211-TRENT 972-84. Effective Nov 22, 2017
- [AD 2017-03-02](https://openairdocs.org/ad/2017-03-02) (historical): LP compressor blade · Rolls-Royce RB211 Trent 768-60, RB211 Trent 772-60 and RB211 Trent 772B-60. Effective Mar 22, 2017
- [AD 2017-01-01](https://openairdocs.org/ad/2017-01-01) (historical): Engine (Turbine/Turboprop) · Rolls-Royce RB211-TRENT 970-84, RB211-TRENT 970B-84, RB211-TRENT 972-84 and 4 more. Effective Jan 26, 2017
- [AD 2016-24-08](https://openairdocs.org/ad/2016-24-08) (historical): Upper bifurcation fairing · Rolls-Royce RB211-Trent 875-17, RB211-Trent 877-17, RB211-Trent 884-17 and 4 more. Effective Jan 5, 2017
- [AD 2015-17-21](https://openairdocs.org/ad/2015-17-21) (historical): High-pressure turbine (HPT) disks · Rolls-Royce RB211-535E4-37, RB211-535E4-B-37 and RB211-535E4-C-37. Effective Dec 2, 2015
- [AD 2015-17-19](https://openairdocs.org/ad/2015-17-19) (historical): Fan case low-pressure (LP) fuel tube · Rolls-Royce RB211 Trent 768-60, RB211 Trent 772-60 and RB211 Trent 772B-60. Effective Oct 20, 2015
- [AD 2015-04-03](https://openairdocs.org/ad/2015-04-03) (historical): High- pressure/intermediate-pressure (HP/IP) turbine support internal oil feed tube · Rolls-Royce RB211 Trent 768-60, RB211 Trent 772-60 and RB211 Trent 772B-60. Effective Mar 30, 2015
- [AD 2014-24-08](https://openairdocs.org/ad/2014-24-08) (historical): Fuel leaks · Rolls-Royce RB211-535E4-37, RB211-535E4-B-37 and RB211-535E4-C-37. Effective Jan 6, 2015
- [AD 2014-16-10](https://openairdocs.org/ad/2014-16-10) (historical): LP compressor blades · Rolls-Royce RB211 Trent 768-60, RB211 Trent 772-60 and RB211 Trent 772B-60. Effective Sep 23, 2014
- [AD 2014-05-25](https://openairdocs.org/ad/2014-05-25) (historical): Low-pressure turbine exhaust case and support assembly or tail bearing housing · Rolls-Royce RB211-TRENT 970-84, RB211-TRENT 970B-84, RB211-TRENT 972-84 and 4 more. Effective Apr 7, 2014
- [AD 2013-26-10](https://openairdocs.org/ad/2013-26-10) (historical): High-pressure (HP) compressor rotor stage 1 and stage 2 discs · Rolls-Royce RB211-524G2-19, RB211-524G3-19, RB211-524H-36 and 1 more. Effective Jan 23, 2014
- [AD 2013-19-18](https://openairdocs.org/ad/2013-19-18) (historical): LPT stage 2 disc failure · Rolls-Royce RB211-535E4-37, RB211-535E4-B-37, RB211-535E4-B-75 and 1 more. Effective Nov 7, 2013
- [AD 2013-19-17](https://openairdocs.org/ad/2013-19-17) (historical): Failure of rotating life limited parts · Rolls-Royce RB211-535E4-B-37. Effective Nov 7, 2013
- [AD 2013-15-10](https://openairdocs.org/ad/2013-15-10) (historical): Cracking on the IP compressor rotor shaft rear balance land · Rolls-Royce RB211-Trent 875-17, RB211-Trent 877-17, RB211-Trent 884-17 and 22 more. Effective Oct 8, 2013
- [AD 2013-12-01](https://openairdocs.org/ad/2013-12-01) (historical): LP compressor blades · Rolls-Royce RB211 Trent 768-60, RB211 Trent 772-60 and RB211 Trent 772B-60. Effective Jul 29, 2013
- [AD 2013-05-18](https://openairdocs.org/ad/2013-05-18) (historical): Fuel tubes and fuel tube clips · Rolls-Royce RB211 Trent 553-61, RB211 Trent 553A2-61, RB211 Trent 556-61 and 5 more. Effective Apr 5, 2013
- [AD 2013-02-04](https://openairdocs.org/ad/2013-02-04) (historical): Low-pressure turbine (LPT) stage 2 disk interstage seal material loss and increased low-pressure rotor vibration while in flight · Rolls-Royce RB211-TRENT 970-84, RB211-TRENT 970B-84, RB211-TRENT 972-84 and 4 more. Effective Feb 14, 2013
- [AD 2012-10-12](https://openairdocs.org/ad/2012-10-12) (historical): Compressor rotor shafts · Rolls-Royce RB211-Trent 875-17, RB211-Trent 877-17, RB211-Trent 884-17 and 15 more. Effective Jun 29, 2012
- [AD 2012-06-23](https://openairdocs.org/ad/2012-06-23) (historical): LP compressor blades · Rolls-Royce RB211-Trent 875-17, RB211-Trent 877-17, RB211-Trent 884-17 and 4 more. Effective Apr 20, 2012
- [AD 2012-04-13](https://openairdocs.org/ad/2012-04-13) (historical): HP compressor stage 1 and 2 disc posts · Rolls-Royce RB211-524G2-T-19, RB211-524G3-T-19, RB211-524H-T-36 and 19 more. Effective Apr 11, 2012
- [AD 2012-04-01](https://openairdocs.org/ad/2012-04-01) (historical): Critical engine parts · Rolls-Royce RB211-Trent 875-17, RB211-Trent 877-17, RB211-Trent 884-17 and 4 more. Effective Mar 28, 2012
- [AD 2012-02-04](https://openairdocs.org/ad/2012-02-04) (historical): Engine fuel leaks · Rolls-Royce RB211 Trent 553-61, RB211 Trent 553A2-61, RB211 Trent 556-61 and 5 more. Effective Feb 24, 2012
- [AD 2011-13-01](https://openairdocs.org/ad/2011-13-01) (historical): Rivets · Rolls-Royce RB211-524D4-19, RB211-524D4-39, RB211-524D4-B-19 and 11 more. Effective Aug 12, 2011
- [AD 2011-11-08](https://openairdocs.org/ad/2011-11-08) (historical): LP Turbine discs · Rolls-Royce RB211-535E4-37, RB211-535E4-B-37, RB211-535E4-B-75 and 1 more. Effective Jun 30, 2011
- [AD 2011-09-07](https://openairdocs.org/ad/2011-09-07) (historical): High-pressure compressor (HPC) Stage 1 and 2 disc posts · Rolls-Royce RB211-524G2-T-19, RB211-524G3-T-19, RB211-524H-T-36 and 19 more. Effective Jun 7, 2011
- [AD 2011-08-07](https://openairdocs.org/ad/2011-08-07) (historical): LP compressor blades · Rolls-Royce RB211-Trent 884B-17, RB211-Trent 892B-17, RB211-Trent 895-17 and 4 more. Effective Jun 7, 2011
- [AD 2010-16-07](https://openairdocs.org/ad/2010-16-07) (historical): IP turbine · Rolls-Royce RB211-TRENT 970-84, RB211-TRENT 970B-84, RB211-TRENT 972-84 and 4 more. Effective Sep 17, 2010
- [AD 2009-24-05](https://openairdocs.org/ad/2009-24-05) (historical): Fuel pipes · Rolls-Royce RB211-Trent-884B-17, RB211-Trent-892B-17, RB211-Trent-895-17 and 4 more. Effective Jan 4, 2010
- [AD 2008-22-24](https://openairdocs.org/ad/2008-22-24) (historical): Low pressure compressor (LPC) fan blade · Rolls-Royce RB211-535E4-37, RB211-535E4-B-37 and RB211-535E4-B-75. Effective Dec 9, 2008
- [AD 2008-18-08](https://openairdocs.org/ad/2008-18-08) (historical): IP Compressor rotor · Rolls-Royce RB211-Trent 884B-17, RB211-Trent 892B-17, RB211-Trent 895-17 and 14 more. Effective Oct 14, 2008
- [AD 2007-19-10](https://openairdocs.org/ad/2007-19-10) (historical): Intermediate Pressure Compressor (IP Compressor) Drums · Rolls-Royce RB211 Trent 553-61, RB211 Trent 553A2-61, RB211 Trent 556-61 and 5 more. Effective Oct 3, 2007
- [AD 2006-11-05 R1](https://openairdocs.org/ad/2006-11-05-R1) (historical): Disc assemblies · Rolls-Royce RB211-22B-02, RB211-22B/MOD 72-8700, RB211-524B-02 and 27 more. Effective May 1, 2007
- [AD 2007-02-05](https://openairdocs.org/ad/2007-02-05) (historical): High pressure-and-intermediate pressure (HP-IP) turbine internal and external oil 
vent tubes · Rolls-Royce RB211 Trent 768-60, RB211 Trent 772-60 and RB211 Trent 772B-60. Effective Feb 6, 2007
- [AD 2006-23-11](https://openairdocs.org/ad/2006-23-11) (historical): High pressure (HP)/intermediate pressure (IP) turbine bearing oil feed tube 
heat shield · Rolls-Royce RB211 Trent 768-60, RB211 Trent 772-60 and RB211 Trent 772B-60. Effective Dec 19, 2006
- [AD 2006-11-05](https://openairdocs.org/ad/2006-11-05) (historical): High pressure compressor (HPC) stage 3 disc assemblies · Rolls-Royce RB211-22B-02, RB211-524B-02, RB211-524B-B-02 and 24 more. Effective Jun 27, 2006
- [AD 2006-05-03](https://openairdocs.org/ad/2006-05-03) (historical): High pressure-intermediate pressure (HP- IP) turbine · Rolls-Royce RB211 Trent 768-60, RB211 Trent 772-60 and RB211 Trent 772B-60. Effective Mar 27, 2006
- [AD 2005-15-13](https://openairdocs.org/ad/2005-15-13) (historical): Intermediate pressure (IP) compressor stage 5 disks · Rolls-Royce RB211-524 Series (all). Effective Aug 30, 2005
- [AD 2005-02-05](https://openairdocs.org/ad/2005-02-05) (historical): Low Pressure Compressor (LPC) Fan Blade Roots · Rolls-Royce RB211-535E4-37, RB211-535E4-B-37 and RB211-535E4-B-75. Effective Feb 11, 2005
- [AD 2004-26-05](https://openairdocs.org/ad/2004-26-05) (historical): Head section and meterpanel assembly of the combustion liner · Rolls-Royce RB211-524B-02, RB211-524B-B-02, RB211-524B2-19 and 20 more. Effective Feb 9, 2005
- [AD 2005-01-15](https://openairdocs.org/ad/2005-01-15) (historical): Fan blade dovetail roots · Rolls-Royce RB211-Trent-844B-17, RB211-Trent-884B-17, RB211-Trent-892B-17 and 5 more. Effective Jan 28, 2005
- [AD 2004-26-03](https://openairdocs.org/ad/2004-26-03) (historical): High pressure (HP) turbine discs · Rolls-Royce RB211-22B-02, RB211-535C-37, RB211-535E4-37 and 3 more. Effective Jan 13, 2005
- [AD 2004-23-03](https://openairdocs.org/ad/2004-23-03) (historical): High pressure-and-intermediate pressure (HP-IP) turbine internal and external oil vent tubes shaft · Rolls-Royce RB211 Trent 768-60, RB211 Trent 772-60 and RB211 Trent 772B-60. Effective Nov 23, 2004
- [AD 2004-15-02](https://openairdocs.org/ad/2004-15-02) (historical): LP Compressor Fan Blade · Rolls-Royce RB211-Trent-884B-17, RB211-Trent-892B-17, RB211-Trent-895-17 and 4 more. Effective Sep 1, 2004
- [AD 2004-01-20](https://openairdocs.org/ad/2004-01-20) (historical): High pressure compressor (HPC) · Rolls-Royce RB211-22B-02, RB211-22B/MOD 72-8700, RB211-524B-02 and 27 more. Effective Feb 24, 2004
- [AD 2003-17-15](https://openairdocs.org/ad/2003-17-15) (historical): Low pressure (LP) turbine stage 2 discs · Rolls-Royce RB211-535E4-37, RB211-535E4-B-37 and RB211-535E4-B-75. Effective Oct 2, 2003

All 211: https://openairdocs.org/aircraft/N450UP/ads.md

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

- [SAIB 2026-11](https://openairdocs.org/saib/2026-11): Theft of Turbofan Engine Parts before Mutilation. Issued Jun 8, 2026

## NTSB investigations

None matched to N450UP.

## FAA accident and incident reports

None matched to N450UP.

## Service difficulty reports (116, 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 IPXA2026052613816](https://openairdocs.org/sdr/IPXA2026052613816), May 22, 2026: CARABINER. MISSING. CARABINER MISSING FROM 1 EMERGENCY DESCENT BODY BAG. INSTALLED NEW CARABINER IAW MM 25-61-00.
- [SDR IPXA2025082506213](https://openairdocs.org/sdr/IPXA2025082506213), Aug 22, 2025: WINDOW. INOPERATIVE. LEFT FWD WINDOW HEAT INOPERATIVE. R & R L1 WINDOW IAW M/M 56-11-02.
- [SDR IPXA2025063081666](https://openairdocs.org/sdr/IPXA2025063081666), Jun 12, 2025: FRAME. DENTED. FAULT Z-100 STR: AFT CARGO COMPARTMENT FRAME AT STA 1480 AT STR 25 AND STR 26 L/H HAS A DENTS. INSTALLED FRAME REPAIR AND STRINGER CLIP APPLIED CIC ON AFT CARGO
- [SDR IPXA2025063045954](https://openairdocs.org/sdr/IPXA2025063045954), Jun 10, 2025: STRUCTURE. CORRODED. L/H ELEVATOR BETWEEN CONDUCTIVE FRAME AND TIP, SPLICE PLATE IS CORRODED UPPER AND LOWER AREAS. LOCATED AND DRILLED NEW KIT, ELEVATOR TIP FITTING ASSY P/N: 654N0
- [SDR IPXA2025062648679](https://openairdocs.org/sdr/IPXA2025062648679), Jun 10, 2025: ANGLE. CORRODED. FAULT-STR-Z600-RH WING UPPER SURFACE IN THE ROOTWING NUTPLATES BRACKET THAT ATTACH ACCESS PANEL 192CR WITH CORROSION.REMOVED CORROSION ON BRACKETS PNS 149N7210-
- [SDR IPXA2025061646315](https://openairdocs.org/sdr/IPXA2025061646315), Jun 10, 2025: SPLICE PLATE. CORRODED. R/H ELEVATOR BETWEEN CONDUCTIVE FRAME AND TIP, SPLICE PLATE IS CORRODED UPPER AND LOWER AREAS. INSTALLED 2 SPLICES PLATES + 2 SHIMS AND RESTORED TO NORMAL CONFI
- [SDR IPXA2025030748701](https://openairdocs.org/sdr/IPXA2025030748701), Mar 4, 2025: ACTUATOR. FAULTED. **SUPPLEMENTAL SDR** LE SLAT DISAGREE WHILE CONFIGURING FOR LANDING. RAN QRH PROCEDURE. R/R #10 INBOARD ROTARY ACTUATOR IAW AMM 27-81-18. OPS CHECK FOUND OK AT 
- [SDR IPXA2025030448701](https://openairdocs.org/sdr/IPXA2025030448701), Mar 4, 2025: SLAT SYSTEM. FAULTED. EMERGENCY DECLARED, LE SLAT DISAGREE WHILE CONFIGURING FOR LANDING. RAN QRH PROCEDURE.
- [SDR IPXA2025022869424](https://openairdocs.org/sdr/IPXA2025022869424), Feb 27, 2025: SLAT SYSTEM. FAULTED. LE SLAT DISAGREE AT 190 KTS/ 4000€™ WHEN PLACING FLAP LEVER TO 1. FOLLOWED QRH TO SUCCESSFUL LANDING. REMOVED AND REPLACED #10 RGA ON LEFT WING L/E. OPS CHECK 
- [SDR IPXA2025022646018](https://openairdocs.org/sdr/IPXA2025022646018), Feb 26, 2025: SLAT SYSTEM. FALSE INDICATION. **EMERGENCY DECLARED**APPROACHING FINAL CALLED FOR FLAPS 1AND SET FLAPS1 AND RECEIVED LE SLAT DISAGREE. PERFORMED THE QRH CHECKLIST LEADING EDGE LIGHT STAYED IL
- [SDR IPXA2024010279690](https://openairdocs.org/sdr/IPXA2024010279690), Dec 28, 2023: PUMP. UNKNOWN. EMERGENCY DECLARED, L AFT FUEL PUMP PRESS, R FWD FUEL PUMP PRESS, EQP COOLING OVHT, PROBE HEAT, L AOA, AND EQPT CLG FAN STATUS. EICAS MSG. DECLARED EMERGENCY. V
- [SDR IPXA2023122879690](https://openairdocs.org/sdr/IPXA2023122879690), Dec 28, 2023: UNKNOWN. UNKNOWN. EMERGENCY DECLARED, L AFT FUEL PUMP PRESS, R FWD FUEL PUMP PRESS, EQP COOLING OVHT, PROBE HEAT, L AOA, AND EQPT CLG FAN STATUS. EICAS MSG. DECLARED EMERGENCY. V
- [SDR IPXA2023081572719](https://openairdocs.org/sdr/IPXA2023081572719), Jul 10, 2023: FRAME. DENTED. MAJOR REPAIR DENT FOUND ON RH STA 1260 LOWER FRAME. ALL STEPS ACCOMPLISHED IAW EO-87721-REQ1 AND EA 757-5360-27-A3303-REV- REVIEWED.
- [SDR IPXA2023071972719](https://openairdocs.org/sdr/IPXA2023071972719), Jul 10, 2023: UNKNOWN. UNKNOWN. *SDR FILED OPEN* *MAJOR REPAIR* FAULT: DENT FOUND ON RH STA 1260 LOWER FRAME REVIEWED.
- [SDR IPXA2019081445627](https://openairdocs.org/sdr/IPXA2019081445627), Aug 13, 2019: WARNING MESSAGE. FALSE ACTIVATION. AIR TURN BACK - DURING CLIMBOUT RIGHT ENG EGT CLIMB RAPIDLY INTO AMBER SECTOR. EPR WAS .2 LESS THAN LEFT ENGINE WITH MATCHED THROTTLE POSITIONS. EPR WAS NOT FOL
- [SDR IPXA2019071144341](https://openairdocs.org/sdr/IPXA2019071144341), Jul 11, 2019: SKIN. DELAMINATED. INSPECTION TYPE:C1 #6 SLAT HAS MULTIPLE DELAMINATIONS ON THE UPR, SURFACE OF THE TE WEDGE. REPAIRED DELAMINATIONS IAW SRM 51-70-10.
- [SDR IPXA2019040544769](https://openairdocs.org/sdr/IPXA2019040544769), Apr 3, 2019: PUMP. FAILED. EMERGENCY DECLARED - IN FLIGHT LOST LEFT SYSTEM HYDRAULIC FLUID; LEFT ENG AND ELEC HYDRAULIC PUMP PRESSURE LIGHTS ILLUMINATED. **SUPPLEMENTAL SDR**FOUND LEFT EN
- [SDR IPXA2019011037692](https://openairdocs.org/sdr/IPXA2019011037692), Jan 9, 2019: LIGHT. MISSING. INSPECTION TYPE:N/A EMERGENCY EXIT LIGHT HAS 1 BULB MISSING. RELAMPED EMERGENCY EXIT LIGHT PER MM 51-00-00. OPS CHK GOOD.
- [SDR IPXA2018100534705](https://openairdocs.org/sdr/IPXA2018100534705), Oct 3, 2018: WARNING MESSAGE. FALSE ACTIVATION. LE SLAT DISAGREE AFTER TAKE OFF, UNABLE TO RESOLVE WITH QRH PROCEDURES. AIR TURN BACK. ACCOMPISHED IAW FM 27-81-00-815-803. SYSTEM OK IAW BLOCK 28.
- [SDR IPXA2018041228508](https://openairdocs.org/sdr/IPXA2018041228508), Apr 12, 2018: BULB. INOPERATIVE. EMERGENCY LIGHT HAS FOUR BULBS INOPERATIVE. REPLACED THE BULBS IAW 33-51-01-2.
- [SDR IPXA2015062190379](https://openairdocs.org/sdr/IPXA2015062190379), Jun 17, 2015: FLOORBOARD. DELAMINATED. INSPECTION TYPE:C-11, SUPERNUMERARY AREA FLOORBOARD 211AF IS DELAMINATED. FABRICATED NEW FLOORBOARD IAW SREO B757-5320-9692-H.
- [SDR IPXA2015062590538](https://openairdocs.org/sdr/IPXA2015062590538), Jun 13, 2015: FLOOR PANEL. DELAMINATED. INSPECTION TYPE: C11, CABIN FLOOR PANEL 231XMF LOWER SURFACE DELAMINATED. FABRICATED A NEW FLOOR PANEL IAW SREO B757-5320-9690-H.
- [SDR IPXA2015062490513](https://openairdocs.org/sdr/IPXA2015062490513), Jun 11, 2015: WEDGE. DENTED. INSPECTION TYPE: C11, LT WING NR 5 SLAT WEDGE UPPER SURFACE DENTED AT 9 IN FROM INBD EDGE AND 5" FROM T/E. REPAIRED WITH METAL HOT BOND REPAIR IAW SRM 57-43-02-
- [SDR IPXA2015062190383](https://openairdocs.org/sdr/IPXA2015062190383), Jun 10, 2015: FRAME. DENTED. INSPECTION TYPE: C-11, FWD CARGO BAY FRAME AT STA 720, STR 23L IS DENTED. REPAIRED FWD PIT FRAME AT STA 720, STR 23L IAW SRM 53-00-07-2R-5, DETAIL I.
- [SDR IPXA2015062190382](https://openairdocs.org/sdr/IPXA2015062190382), Jun 10, 2015: FRAME. DENTED. INSPECTION TYPE:C-11, FWD PIT FRAME AT STA 780, STR 23L DENTED. REPAIRED FWD PIT FRAME AT STA 780, STR 23L IAW SRM 53-00-07-2R-5, FIG 201, DETAIL I.
- [SDR IPXA2014111984871](https://openairdocs.org/sdr/IPXA2014111984871), Nov 14, 2014: LAMP. INOPERATIVE. EMERGENCY LIGHTS UNARMED LIGHTS INOPERATIVE ON OVERHEAD PANEL. REPLACED THE LAMPS IAW AMM 33-10. OPS CHECKED NORMAL.
- [SDR IPXA2014071183560](https://openairdocs.org/sdr/IPXA2014071183560), Jul 8, 2014: PITOT HEAD. OBSTRUCTED. STANDBY AIRSPEED INDICATION IS NOT READING ACCURATELY UP TO 40 KTS IND OFF, ACFT DIVERTED. FLUSHED AUX PITOT SYS NR 1 AND R & R STBY AIRSPEED INDICATOR IAW AMM 
- [SDR IPXA2014021981987](https://openairdocs.org/sdr/IPXA2014021981987), Feb 17, 2014: WINDOW. OUT OF ADJUST. EXCESSIVE FORCE REQUIRED TO MOVED WINDOW HANDLE AFT, TO THE OPEN POSITION ON FIRST OFFICER`S SIDE. MADE ADJUSTMENT TO R2 WINDOW IAW MM 56-11-02. OPS CHECKED GOO
- [SDR IPXA3579734](https://openairdocs.org/sdr/IPXA3579734), Aug 7, 2013: FLOOR PANEL. DAMAGED. INSPECTION TYPE:C10, MAIN CABIN FLOOR PANEL 241XGF IS DAMAGED ON EDGES. FABRICATED NEW FLOOR PANEL IAW SREO B757-5320-9692-H.
- [SDR IPXA13577000](https://openairdocs.org/sdr/IPXA13577000), Feb 5, 2013: LAMP. INOPERATIVE. EMERGENCY LIGHT ASSY HAS FOUR LAMPS INOPERATIVE. INSTALLED LAMPS IAW AMM 33-51-01.
- [SDR IPXA1569517](https://openairdocs.org/sdr/IPXA1569517), Sep 29, 2011: SUPPORT ANGLE. WORN. INSPECTION TYPE:C1, RT WING, WING TO BODY SUPPORT STRUCTURE IS WORN AT STA 1147 AT MOST INBD T/E PANEL SUPPORT ANGLE. R & R CHORD IAW SRM 51-40-02; SRM 51-40-05
- [SDR IPXA1569591](https://openairdocs.org/sdr/IPXA1569591), Sep 26, 2011: SKIN. DAMAGED. WHILE INSTALLING NR 2 OTBD THRUST REVERSER, DAMAGED NR 2 PYLON PANEL CUTOUT FOR PANEL NR443BR. REPAIRED IAW ATS ER 11-04738.
- [SDR IPXA1569366](https://openairdocs.org/sdr/IPXA1569366), Sep 11, 2011: FLOOR PANEL. CORRODED. INSPECTION TYPE:C1, ACB NR 3 FLOOR PANEL HAS AREAS OF CORROSION. FABRICATED NEW FLOOR PANEL IAW SRM 53-60-53-0I-1, SRM 53-00-53-1A 1 SRM 51-40-05-0G, SRM 51-20-
- [SDR IPXA1569333](https://openairdocs.org/sdr/IPXA1569333), Sep 11, 2011: FLOOR PANEL. DAMAGED. INSPECTION TYPE:C1, MAIN DECK FREIGHTER FLOOR PANEL 241 XJF, HAS A DAMAGED FWD OTBD CORNER. FABRICATED NEW FLOOR PANEL IAW SRM 53-00-50-1A 1, SRM 53-00-50-0I 1.
- [SDR IPXA1569332](https://openairdocs.org/sdr/IPXA1569332), Sep 11, 2011: FLOORBOARD. DAMAGED. INSPECTION TYPE:C1, MAIN DECK FLOORBOARD 242XCF, HAS A DAMAGED OTBD AFT CORNER. FABRICATED NEW MAIN DECK FLOORBOARD IAW SRM 53-00-50-0I-1, SRM 53-00-50-0I-1, B7
- [SDR IPXA1569331](https://openairdocs.org/sdr/IPXA1569331), Sep 11, 2011: FLOOR PANEL. CORRODED. INSPECTION TYPE:C1, ACB NR 4 FLOOR PANEL HAS AREAS OF CORROSION. FABRICATED REPLACEMENT FLOOR PANEL IAW SRM 53-60-53-0I-1 AND DWG 453N1270.
- [SDR IPXA1569329](https://openairdocs.org/sdr/IPXA1569329), Sep 11, 2011: FLOOR PANEL. CORRODED. INSPECTION TYPE:C1, ACB NR 2 FLOOR PANEL HAS AREAS OF CORROSION. FABRICATED NEW NR 2 FLOOR PANEL IAW SRM 53-60-53-0I-1, SRM 53-00-53-1A1, SRM 51-40-05-0G AND SR
- [SDR IPXA1569392](https://openairdocs.org/sdr/IPXA1569392), Sep 8, 2011: STRAP. CORRODED. INSPECTION TYPE:C1, WHILE ACCESSING APU INLET HOUSING FOUND CORROSION AT NUTPLATE HOLES ON OUTER STRAP, BS 1823 FROM STR 3R TO STR 6R. REPAIRED IAW ER 11-04502 
- [SDR IPXA20110908002](https://openairdocs.org/sdr/IPXA20110908002), Sep 8, 2011: SUPPORT ANGLE. CORRODED. INSPECTION TYPE:C1, WHILE ACCESSING APU INLET HOUSING, FOUND UPPER SUPPORT ANGLES CORRODED AT STR 3R FROM BS 1789 TO BS 1823. REPLACED IAW SRM 51-40-02.
- [SDR IPXA20110908001](https://openairdocs.org/sdr/IPXA20110908001), Sep 8, 2011: SUPPORT ANGLE. CORRODED. INSPECTION TYPE:C1, WHILE ACCESSING INLET HOUSING FOUND UPPER SUPPORT ANGLES CORRODED AT STR 6R FROM BS 1789 TO BS 1823. REPLACED IAW SRM 51-40-02.
- [SDR IPXA1569532](https://openairdocs.org/sdr/IPXA1569532), Sep 7, 2011: FLOORBEAM. CORRODED. INSPECTION TYPE:C1, MAIN CARGO DECK: CORROSION ON FLOORBEAM; BS 1200, RBL 14, WL 208. R & R CORRODED FLOORBEAM IAW SRM 53-00-51-1A 1, SRM 51-10-02-0G.
- [SDR IPXA11569446](https://openairdocs.org/sdr/IPXA11569446), Sep 7, 2011: FLOORBEAM. CORRODED. INSPECTION TYPE: C1, MAIN CARGO DECK FLOORBEAM HAS BARE METAL AT BS 1200, RBL 20, WL 208. REPAIRED IAW ER 11-04462.
- [SDR IPXA11569445](https://openairdocs.org/sdr/IPXA11569445), Sep 7, 2011: FLOORBEAM. CORRODED. INSPECTION TYPE: C, MAIN CARGO DECK CORROSION ON FLOORBEAM, BS 1200, RBL 51, WL 208. REPAIRED IAW ER 11-04462.
- [SDR IPXA11569422](https://openairdocs.org/sdr/IPXA11569422), Sep 7, 2011: SEAT TRACK. CORRODED. INSPECTION TYPE:C1, MAIN CARGO DECK: CORROSION ON SEAT TRACK, BS 1207.5, RBL 44, WL 208. REMOVED, FABRICATED AND INSTALLED NEW SEAT TRACK IAW SRM 53-60-52-0I 1,
- [SDR IPXA11569421](https://openairdocs.org/sdr/IPXA11569421), Sep 7, 2011: SEAT TRACK. CORRODED. INSPECTION TYPE:C1, MAIN CARGO DECK: CORROSION ON SEAT TRACK, BS 1624, RBL 44, WL 208. REMOVED, FABRICATED AND INSTALLED NEW SEAT TRACK IAW SRM 53-00-52-1A 1, S
- [SDR IPXA11569420](https://openairdocs.org/sdr/IPXA11569420), Sep 7, 2011: SEAT TRACK. CORRODED. INSPECTION TYPE:C1, MAIN CARGO DECK CORROSION ON SEAT TRACK; BS 1215, RBL 24, WL 208. REMOVED, FABRICATED AND INSTALLED NEW SEAT TRACK IAW SRM 53-00-52-1A 1, SR
- [SDR IPXA1569405](https://openairdocs.org/sdr/IPXA1569405), Sep 7, 2011: FLOORBOARD. PUNCTURED. INSPECTION TYPE:C1, MAIN CARGO DECK FLOOR PANEL BS 1540-1600, RBL 45-60 IS PUNCTURED. FABRICATED NEW MAIN CARGO DECK FLOOR PANEL IAW SRM 53-00-50-0I 1, SRM 53-0
- [SDR IPXA20110907001A](https://openairdocs.org/sdr/IPXA20110907001A), Sep 7, 2011: ANGLE. CHAFED. INSPECTION TYPE:MOD, NR 1 PYLON AFT FAIRING STRUCTURE FWD LT VERTICAL ANGLE IS CHAFED IN THE RADIUS. R & R ANGLE IAW SRM 51-40-02-0G, SRM 51-40-06-0G, SRM 51-40
- [SDR IPXA11569454](https://openairdocs.org/sdr/IPXA11569454), Sep 6, 2011: BEAM. CORRODED. INSPECTION TYPE: C1, CORROSION ON MAIN CARGO STUB BEAM UPPER SURFACE AT NUTPLATE LOCATIONS, BS 900, RBL 48-54, WL 208. REPLACED IAW DWG 144N1079, AND FABRICATED
- [SDR IPXA11569453](https://openairdocs.org/sdr/IPXA11569453), Sep 6, 2011: BEAM. CORRODED. INSPECTION TYPE: C1, CORROSION ON MAIN CARGO STUB BEAM UPPER SURFACE AT NUTPLATE LOCATIONS BS 900, LBL 48-54, WL 208. REPLACED IAW DWG 144N1079 AND FABRICATED I

All 116: https://openairdocs.org/aircraft/N450UP/reports.md

## STCs that may be installed (OpenAirDocs) (3)

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 (Rolls-Royce RB-211 series)

- [STC SA4005NM](https://openairdocs.org/stc/SA4005NM): Precise Flight Inc. Pulselite Control System. Precise Flight Inc. Lists RB211-22B-02
- [STC SE00409LA](https://openairdocs.org/stc/SE00409LA): Installation of gas generator fairing thermal insulation blankets. Air New Zealand Limited. Lists RB211-524G2-19
- [STC SE1516CE](https://openairdocs.org/stc/SE1516CE): Modification of lower fuel control box assembly to incorporate vibration isolators. Trans World Airlines Inc. Lists RB211-22B-02

## Related

- Other Boeing 757-24APF aircraft: https://openairdocs.org/model/boeing-757-24apf/aircraft.md
- The Rolls-Royce RB-211 series engine: https://openairdocs.org/engine/rolls-royce-rb-211-series.md

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