# N521FE: 1992 Mcdonnell Douglas MD-11F - Status: Valid registration - Airframe: [Mcdonnell Douglas MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (registry code 3023600, 7 seats) - Engine: [Pratt & Whitney PW4462](https://openairdocs.org/engine/pratt-whitney-pw4462) (registry code 52171) - Data sheets: [TCDS A22WE](https://openairdocs.org/tcds/A22WE) (The Boeing Company), [TCDS E24NE](https://openairdocs.org/tcds/E24NE) (Pratt & Whitney Division) (OpenAirDocs) - Serial number: 48478 - Year built: 1992 - Type: Fixed wing multi engine - Engine type: Turbo-fan - Airworthiness: Standard, transport - Airworthiness date: September 28, 2006 - Certificate issued: June 2, 2005 - Expires: July 31, 2027 - Mode S code: A68D27 - Registered owner: [Federal Express Corp](https://openairdocs.org/faa-owner/FEDERAL%20EXPRESS%20CORP) - Location: [Memphis, TN](https://openairdocs.org/faa-place/TN/Memphis) - Owner type: Corporation - Owner's area on the map: 35.0351° N, 89.9272° W: Placed by OpenAirDocs at the center of ZIP code 38118, within about 3 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=521FE - Page: https://openairdocs.org/aircraft/N521FE 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. ## ADs that may apply (OpenAirDocs): 210 in force ### Matched by airframe (Mcdonnell Douglas MD-11F) - [AD 2026-13-15](https://openairdocs.org/ad/2026-13-15): Navigation · Boeing 707-100 Long Body, 707-200, 707-100B Long Body and 74 more. Effective Jul 1, 2026 - [AD 2026-13-02](https://openairdocs.org/ad/2026-13-02): Navigation · Airbus Canada Limited Partnership 18, 49-46, 80-A and 555 more. Effective Jul 1, 2026 - [AD 2025-23-53](https://openairdocs.org/ad/2025-23-53): Nacelles/pylons · Boeing MD-11, MD-11F, MD-10-10F and 8 more. Effective Dec 1, 2025 - [AD 2025-02-07](https://openairdocs.org/ad/2025-02-07): Navigation · Modification of Rockwell Collins, Inc. Multi-Mode Receiver (STC ST01883WI or 4 others). Effective Mar 17, 2025 - [AD 2024-24-03](https://openairdocs.org/ad/2024-24-03): Engine Exhaust · Boeing MD-11, MD-11F and CF6-80C2D1F. Effective Jan 13, 2025 - [AD 2023-12-15](https://openairdocs.org/ad/2023-12-15): Navigation · Boeing 707-100 Long Body, 707-200, 707-100B Long Body and 74 more. Effective Jun 21, 2023 - [AD 2023-10-02](https://openairdocs.org/ad/2023-10-02): Indicating/Recording System, Navigation · Boeing 18, 23, 35 and 1,060 more. Effective May 26, 2023 - [AD 2021-24-02](https://openairdocs.org/ad/2021-24-02): Electrical power · Boeing MD-11 and MD-11F. Effective Feb 1, 2022 - [AD 2020-22-15](https://openairdocs.org/ad/2020-22-15): Fuselage · Boeing DC-10-10, DC-10-10F, DC-10-15 and 8 more. Effective Dec 18, 2020 - [AD 2018-22-10](https://openairdocs.org/ad/2018-22-10): Fuel · Boeing DC-10-10, DC-10-10F, DC-10-15 and 8 more. Effective Dec 12, 2018 - [AD 2018-07-20](https://openairdocs.org/ad/2018-07-20): Fuel · Boeing MD-11 and MD-11F. Effective May 21, 2018 - [AD 2018-01-01](https://openairdocs.org/ad/2018-01-01): Fuel · Boeing MD-11 and MD-11F. Effective Feb 7, 2018 - [AD 2017-14-10](https://openairdocs.org/ad/2017-14-10): Fuel System · Boeing MD-11 and MD-11F. Effective Aug 21, 2017 - [AD 2014-17-02](https://openairdocs.org/ad/2014-17-02): Communications · Airbus A300 B2-1A, A300 B2-1C, A300 B2-203 and 137 more. Effective Sep 9, 2014 - [AD 2011-25-06](https://openairdocs.org/ad/2011-25-06): Horizontal stabilizer structure · Boeing MD-11 and MD-11F. Effective Jan 17, 2012 - [AD 2011-21-08](https://openairdocs.org/ad/2011-21-08): Equipment/Furnishings · ATR - GIE Avions de Transport Régional ATR42-200, ATR42-300, ATR42-320 and 202 more. Effective Nov 23, 2011 - [AD 2011-12-01](https://openairdocs.org/ad/2011-12-01): Equipment/Furnishings · Airbus A300 B2-1A, A300 B2-1C, A300 B2-203 and 268 more. Effective Aug 1, 2011 - [AD 2011-11-05](https://openairdocs.org/ad/2011-11-05): Fuel · Boeing DC-10-10, DC-10-10F, DC-10-15 and 10 more. Effective Jul 6, 2011 - [AD 2011-02-01](https://openairdocs.org/ad/2011-02-01): Fuel · Boeing MD-11 and MD-11F. Effective Feb 16, 2011 - [AD 2010-20-14](https://openairdocs.org/ad/2010-20-14): Fuel · Boeing DC-10-10, DC-10-10F, DC-10-15 and 8 more. Effective Nov 5, 2010 - [AD 2010-16-03](https://openairdocs.org/ad/2010-16-03): Ice and rain protection · Boeing MD-11 and MD-11F. Effective Sep 9, 2010 - [AD 2010-11-12](https://openairdocs.org/ad/2010-11-12): Fuel · Boeing MD-11 and MD-11F. Effective Jul 6, 2010 - [AD 2010-09-12](https://openairdocs.org/ad/2010-09-12): Fuel · Boeing DC-10-10, DC-10-10F, DC-10-15 and 8 more. Effective Jun 8, 2010 - [AD 2009-21-10 R1](https://openairdocs.org/ad/2009-21-10-R1): Oxygen · Airbus A300 B4-605R, A300 B4-620, A300 B4-622 and 138 more. Effective Feb 4, 2010 - [AD 2008-06-21 R1](https://openairdocs.org/ad/2008-06-21-R1): Fuel tank systems · Boeing DC-10-10, DC-10-10F, DC-10-15 and 8 more. Effective Dec 10, 2009 - [AD 2009-03-02](https://openairdocs.org/ad/2009-03-02): Auxiliary hydraulic pumps · Boeing DC-10-10, DC-10-10F, DC-10-15 and 8 more. Effective Mar 31, 2009 - [AD 2008-17-16](https://openairdocs.org/ad/2008-17-16): Fuel boost pump · Boeing DC-10-10, DC-10-10F, DC-10-15 and 8 more. Effective Oct 2, 2008 - [AD 2008-11-14](https://openairdocs.org/ad/2008-11-14): Horizontal pressure panel · Boeing DC-10-10F, DC-10-30F (KC-10A, KDC-10), DC-10-40F and 4 more. Effective Jul 3, 2008 - [AD 2007-25-20](https://openairdocs.org/ad/2007-25-20): Thrust reverser command wiring · Boeing DC-10-10, DC-10-10F, DC-10-15 and 6 more. Effective Jan 22, 2008 - [AD 2007-19-17](https://openairdocs.org/ad/2007-19-17): System 3 hydraulic piping · Boeing DC-10-10, DC-10-10F, DC-10-15 and 8 more. Effective Oct 26, 2007 - [AD 2007-19-15](https://openairdocs.org/ad/2007-19-15): Flight management system (FMS) · Boeing 717-200, MD-10-10F, MD-10-30F and 2 more. Effective Oct 26, 2007 - [AD 2007-19-02](https://openairdocs.org/ad/2007-19-02): Fuel tank and the fuel transfer pump housing flange · Boeing DC-10-30, DC-10-30F (KC-10A, KDC-10), DC-10-40 and 4 more. Effective Oct 17, 2007 - [AD 2007-11-16](https://openairdocs.org/ad/2007-11-16): Center main wheel well · Boeing MD-11 and MD-11F. Effective Jul 5, 2007 - [AD 2007-10-12](https://openairdocs.org/ad/2007-10-12): Reinforced flight deck door · Reinforced cockpit door (Safran Cabin STC ST01335LA or 2 others). Effective Jun 27, 2007 - [AD 2007-07-04](https://openairdocs.org/ad/2007-07-04): Principal structural elements (PSEs) · Boeing MD-11 and MD-11F. Effective May 2, 2007 - [AD 2007-01-02](https://openairdocs.org/ad/2007-01-02): Power feeder cables of the integrated drive generator (IDG) · Boeing MD-11 and MD-11F. Effective Feb 14, 2007 - [AD 2006-25-09](https://openairdocs.org/ad/2006-25-09): Auxiliary power unit (APU) power feeder wires · Boeing MD-11F. Effective Dec 27, 2006 - [AD 2006-19-03](https://openairdocs.org/ad/2006-19-03): Fabrication and installation of a wire harness guard in the right wheel well of the main landing gear (MLG) · Boeing DC-10-10, DC-10-10F, DC-10-15 and 8 more. Effective Oct 17, 2006 - [AD 2006-16-15](https://openairdocs.org/ad/2006-16-15): Airplane flight manual (AFM) · Boeing MD-10-10F, MD-10-30F, MD-11 and 1 more. Effective Sep 22, 2006 - [AD 2006-13-07](https://openairdocs.org/ad/2006-13-07): Upper and lower reading lights · Boeing MD-11 and MD-11F. Effective Jul 27, 2006 - [AD 2006-04-04](https://openairdocs.org/ad/2006-04-04): Smoke detectors · ATR - GIE Avions de Transport Régional ATR42-200, ATR42-300, ATR42-320 and 37 more. Effective Mar 24, 2006 - [AD 2006-03-13](https://openairdocs.org/ad/2006-03-13): Inboard and outboard hinge fittings · Boeing DC-10-10, DC-10-10F, DC-10-15 and 8 more. Effective Mar 16, 2006 - [AD 2006-02-11](https://openairdocs.org/ad/2006-02-11): Drain holes of the pitot tubes · Boeing DC-10-10, DC-10-10F, DC-10-15 and 8 more. Effective Mar 3, 2006 - [AD 2005-20-15](https://openairdocs.org/ad/2005-20-15): Rudder pedal torque tube assembly · Boeing DC-10-10, DC-10-10F, DC-10-15 and 8 more. Effective Nov 10, 2005 - [AD 2005-17-04](https://openairdocs.org/ad/2005-17-04): Fire extinguishing system · Boeing DC-10-10, DC-10-10F, DC-10-15 and 8 more. Effective Sep 26, 2005 - [AD 2005-15-12](https://openairdocs.org/ad/2005-15-12): Exterior emergency control handle assemblies of the forward passenger doors · Boeing DC-10-10, DC-10-10F, DC-10-15 and 8 more. Effective Aug 30, 2005 - [AD 2005-15-03](https://openairdocs.org/ad/2005-15-03): Exterior emergency control handle assemblies · Boeing DC-10-10, DC-10-10F, DC-10-15 and 8 more. Effective Aug 25, 2005 - [AD 2005-02-08](https://openairdocs.org/ad/2005-02-08): Power feeder cables of the auxiliary power unit (APU) · Boeing MD-11 and MD-11F. Effective Mar 7, 2005 - [AD 2005-02-06](https://openairdocs.org/ad/2005-02-06): Oil pressure transmitter to the main oil circuit · Boeing MD-11 and MD-11F. Effective Mar 7, 2005 - [AD 2005-02-04](https://openairdocs.org/ad/2005-02-04): Cargo compartment smoke detectors · Boeing DC-10-10F, DC-10-30F (KC-10A, KDC-10), MD-10-10F and 2 more. Effective Feb 8, 2005 ### Matched by engine (Pratt & Whitney PW4462) - [AD 2026-21-06](https://openairdocs.org/ad/2026-21-06): Engine Fuel and Control · Pratt & Whitney Division PW4052, PW4056, PW4060 and 10 more. Effective Nov 23, 2026 - [AD 2018-13-02](https://openairdocs.org/ad/2018-13-02): Turbine Engine Combustion Section · Pratt & Whitney Division PW4052, PW4056, PW4060 and 7 more. Effective Jul 20, 2018 - [AD 2016-08-09](https://openairdocs.org/ad/2016-08-09): HPC 10th stage disk · Pratt & Whitney Division PW4050, PW4052, PW4056 and 24 more. Effective Jun 1, 2016 - [AD 2015-22-03](https://openairdocs.org/ad/2015-22-03): LPT 4th stage IAS · Pratt & Whitney Division PW4050, PW4052, PW4056 and 24 more. Effective Dec 1, 2015 - [AD 2012-22-16](https://openairdocs.org/ad/2012-22-16): 3rd stage LPT duct segments · Pratt & Whitney Division PW4050, PW4052, PW4056 and 13 more. Effective Dec 19, 2012 - [AD 2012-14-09](https://openairdocs.org/ad/2012-14-09): 3rd and 4th stage vane fractures · Pratt & Whitney Division PW4050, PW4052, PW4056 and 24 more. Effective Nov 7, 2012 - [AD 2012-18-17](https://openairdocs.org/ad/2012-18-17): HPC drum rotor disk assembly · Pratt & Whitney Division PW4052, PW4056, PW4060 and 16 more. Effective Oct 22, 2012 - [AD 2012-18-03](https://openairdocs.org/ad/2012-18-03): 1st stage HPT air seal rings · Pratt & Whitney Division PW4050, PW4052, PW4056 and 18 more. Effective Oct 11, 2012 - [AD 2012-16-01](https://openairdocs.org/ad/2012-16-01): High-pressure turbine (HPT) stage 1 front hubs · Pratt & Whitney Division PW4052, PW4056, PW4060 and 14 more. Effective Sep 28, 2012 - [AD 2012-06-18](https://openairdocs.org/ad/2012-06-18): Engine · Pratt & Whitney Division PW4050, PW4052, PW4056 and 13 more. Effective Apr 27, 2012 - [AD 2012-04-04](https://openairdocs.org/ad/2012-04-04): fuel metering units (FMUs) · Pratt & Whitney Division PW4050, PW4052, PW4056 and 13 more. Effective Apr 5, 2012 - [AD 2011-25-09](https://openairdocs.org/ad/2011-25-09): PW4000 turbofan engines · Pratt & Whitney Division PW4050, PW4052, PW4056 and 18 more. Effective Jan 10, 2012 - [AD 2010-24-14](https://openairdocs.org/ad/2010-24-14): HPC 10th stage disk · Pratt & Whitney Division PW4050, PW4052, PW4056 and 17 more. Effective Jan 21, 2011 - [AD 2010-24-09](https://openairdocs.org/ad/2010-24-09): No. 3 bearing oil pressure tubes · Pratt & Whitney Division PW4050, PW4052, PW4056 and 34 more. Effective Dec 28, 2010 - [AD 2008-24-13](https://openairdocs.org/ad/2008-24-13): Electronic engine controls (EECs) · Pratt & Whitney Division PW4052, PW4056, PW4060 and 6 more. Effective Jan 8, 2009 - [AD 2005-25-09](https://openairdocs.org/ad/2005-25-09): Engine manufacturer's time limits section (TLS) · Pratt & Whitney Division PW4050, PW4052, PW4056 and 26 more. Effective Jun 12, 2006 - [AD 2003-19-15](https://openairdocs.org/ad/2003-19-15): High-Pressure-Compressor (HPC) Surges · Pratt & Whitney Division PW4050, PW4052, PW4056 and 12 more. Effective Oct 30, 2003 - [AD 2002-12-15](https://openairdocs.org/ad/2002-12-15): Front Drum Rotors · Pratt & Whitney Division PW4052, PW4056, PW4060 and 6 more. Effective Jul 31, 2002 - [AD 2001-05-07](https://openairdocs.org/ad/2001-05-07): Low Pressure Turbine (LPT) 4th Stage Air Seal · Pratt & Whitney Division PW4052, PW4056, PW4060 and 11 more. Effective Mar 30, 2001 - [AD 98-23-08](https://openairdocs.org/ad/98-23-08): High Pressure Compressor Blade Tips · Pratt & Whitney Division PW4050, PW4052, PW4056 and 12 more. Effective Jan 12, 1999 - [AD 98-19-03](https://openairdocs.org/ad/98-19-03): High Pressure Turbine Rotating Airseals · Pratt & Whitney Division PW4052, PW4056, PW4060 and 9 more. Effective Nov 9, 1998 - [AD 96-13-08](https://openairdocs.org/ad/96-13-08): AFT Cascade Support Frame Assembly · Pratt & Whitney assembly Part Number 221D5015, Revision A (STC SE744NE). Effective Aug 1, 1996 ### Historical (superseded or no longer in force) - [AD 2025-23-51](https://openairdocs.org/ad/2025-23-51) (historical): Nacelles/pylons · Boeing MD-11 and MD-11F. Effective Dec 1, 2025 - [AD 2022-09-18](https://openairdocs.org/ad/2022-09-18) (historical): Navigation · Boeing 707-100 Long Body, 707-100B Long Body, 707-100B Short Body and 72 more. Effective May 23, 2022 - [AD 2020-03-20](https://openairdocs.org/ad/2020-03-20) (historical): Navigation · Modification of Rockwell Collins, Inc. Multi-Mode Receiver (STC ST01883WI or 4 others). Effective Feb 18, 2020 - [AD 2016-04-16](https://openairdocs.org/ad/2016-04-16) (historical): Fuel · Boeing DC-10-10, DC-10-10F, DC-10-15 and 8 more. Effective Apr 15, 2016 - [AD 2014-03-07](https://openairdocs.org/ad/2014-03-07) (historical): Fuel · Boeing MD-11 and MD-11F. Effective Mar 26, 2014 - [AD 2013-18-09](https://openairdocs.org/ad/2013-18-09) (historical): Communications · Airbus A300 B2-1A, A300 B2-1C, A300 B2-203 and 137 more. Effective Oct 3, 2013 - [AD 2013-08-23](https://openairdocs.org/ad/2013-08-23) (historical): Fuel · Boeing DC-10-10, DC-10-10F, DC-10-15 and 8 more. Effective May 29, 2013 - [AD 2009-26-16](https://openairdocs.org/ad/2009-26-16) (historical): Fuel · Boeing MD-11 and MD-11F. Effective Feb 4, 2010 - [AD 2009-21-10](https://openairdocs.org/ad/2009-21-10) (historical): Oxygen · Airbus A300, Model B4-605R, A300, Model B4-620, A300, Model B4-622 and 138 more. Effective Dec 17, 2009 - [AD 2008-06-21](https://openairdocs.org/ad/2008-06-21) (historical): Fuel tank systems · McDonnell Douglas DC-10-10, DC-10-10F, DC-10-15 and 8 more. Effective Apr 23, 2008 - [AD 2007-15-05](https://openairdocs.org/ad/2007-15-05) (historical): Fuel pump housing electrical connector · Boeing DC-10-10, DC-10-10F, DC-10-15 and 9 more. Effective Aug 8, 2007 - [AD 2005-12-05](https://openairdocs.org/ad/2005-12-05) (historical): Flight deck door · Reinforced cockpit door (Safran Cabin STC ST01335LA or 2 others). Effective Jul 19, 2005 - [AD 2004-18-04](https://openairdocs.org/ad/2004-18-04) (historical): Airplane Flight Manual (AFM) · McDonnell Douglas 717-200, MD-10-10F, MD-10-30F and 2 more. Effective Sep 20, 2004 - [AD 2004-05-20](https://openairdocs.org/ad/2004-05-20) (historical): Electric motor operated auxiliary hydraulic pumps · McDonnell Douglas DC-10-10, DC-10-10F, DC-10-15 and 9 more. Effective Apr 15, 2004 - [AD 2004-01-17](https://openairdocs.org/ad/2004-01-17) (historical): Integrated drive generator · McDonnell Douglas MD-11 and MD-11F. Effective Feb 24, 2004 - [AD 2003-17-07](https://openairdocs.org/ad/2003-17-07) (historical): Fire Extinguishers for the Engine and Auxiliary Power Unit (APU) · McDonnell Douglas DC-10-10, DC-10-10F, DC-10-15 and 60 more. Effective Sep 24, 2003 - [AD 2003-14-04](https://openairdocs.org/ad/2003-14-04) (historical): Flight Deck Door Pressure Relief Latch Assemblies · Boeing 737-200 Series, 737-300 Series, 737-400 Series and 14 more. Effective Jul 25, 2003 - [AD 2003-03-15](https://openairdocs.org/ad/2003-03-15) (historical): Airplane Flight Manual (AFM) - Oxygen Masks · Boeing 707 Series (all), 720 Series (all), 727 Series (all) and 75 more. Effective Mar 7, 2003 - [AD 2002-14-11](https://openairdocs.org/ad/2002-14-11) (historical): Ground cables of the galley external power and main external power · McDonnell Douglas MD-11 and MD-11F. Effective Aug 23, 2002 - [AD 2002-14-09](https://openairdocs.org/ad/2002-14-09) (historical): Power feeder cable terminal lugs · McDonnell Douglas MD-11 and MD-11F. Effective Aug 23, 2002 - [AD 99-25-14](https://openairdocs.org/ad/99-25-14) (historical): Wire Harnesses Of Tail Tank Fuel Transfer Pumps · McDonnell Douglas MD-11 and MD-11F. Effective Jan 18, 2000 - [AD 99-09-04](https://openairdocs.org/ad/99-09-04) (historical): Circuit Breakers · McDonnell Douglas MD-11 and MD-11F. Effective May 7, 1999 - [AD 74-08-09 R2](https://openairdocs.org/ad/74-08-09-R2) (historical): Waste Receptacles · Aero Spacelines 377, 377MG, 377SGT and 268 more. Effective Jul 29, 1996 - [AD 94-26-51](https://openairdocs.org/ad/94-26-51) (historical): AFM Changes - Autoland Operation · Boeing MD-11 and MD-11F. Effective Feb 6, 1995 - [AD 94-11-06](https://openairdocs.org/ad/94-11-06) (historical): External Power Feeder Cables · McDonnell Douglas MD-11 and MD-11F. Effective Jun 15, 1994 - [AD 2010-18-13](https://openairdocs.org/ad/2010-18-13) (historical): Blade · Pratt & Whitney Division PW4052, PW4056, PW4060 and 16 more. Effective Oct 18, 2010 - [AD 2003-11-18](https://openairdocs.org/ad/2003-11-18) (historical): High-Pressure-Compressor (HPC) · Pratt & Whitney Division PW4050, PW4052, PW4056 and 12 more. Effective Jul 7, 2003 - [AD 2002-21-10](https://openairdocs.org/ad/2002-21-10) (historical): High pressure compressor (HPC) · Pratt & Whitney Division PW4050, PW4052, PW4056 and 12 more. Effective Nov 12, 2002 - [AD 2002-03-08](https://openairdocs.org/ad/2002-03-08) (historical): Time Limits Section of Engine Manuals (EM's) · Pratt & Whitney Division PW4050, PW4052, PW4056 and 25 more. Effective Apr 16, 2002 - [AD 2001-25-11](https://openairdocs.org/ad/2001-25-11) (historical): Compressor Surges · Pratt & Whitney Division PW4050, PW4052, PW4056 and 12 more. Effective Jan 17, 2002 - [AD 2001-20-13](https://openairdocs.org/ad/2001-20-13) (historical): High Pressure Compressor Front Drum Rotors · Pratt & Whitney Division PW4052, PW4056, PW4060 and 6 more. Effective Nov 16, 2001 - [AD 2001-15-12](https://openairdocs.org/ad/2001-15-12) (historical): High Pressure Compressors (HPC) · Pratt & Whitney Division PW4050, PW4052, PW4056 and 12 more. Effective Aug 10, 2001 - [AD 2001-09-07](https://openairdocs.org/ad/2001-09-07) (historical): High Pressure Compressor (HPC) Surge · Pratt & Whitney Division PW4050, PW4052, PW4056 and 12 more. Effective May 14, 2001 - [AD 2001-08-52](https://openairdocs.org/ad/2001-08-52) (historical): Multiple-engine power loss due to HPC surges · Pratt & Whitney Division PW4050, PW4052, PW4056 and 12 more - [AD 2000-25-06](https://openairdocs.org/ad/2000-25-06) (historical): Low Pressure Turbine (LPT) 4th Stage Air Seal · Pratt & Whitney Division PW4052, PW4056, PW4060 and 11 more. Effective Dec 29, 2000 - [AD 2000-22-01](https://openairdocs.org/ad/2000-22-01) (historical): High Pressure Compressor Cutback Stator · Pratt & Whitney Division PW4050, PW4052, PW4056 and 6 more. Effective Nov 9, 2000 - [AD 2000-12-02](https://openairdocs.org/ad/2000-12-02) (historical): Critical Life-Limited Part · Pratt & Whitney Division PW4050, PW4052, PW4056 and 24 more. Effective Sep 13, 2000 - [AD 99-17-16](https://openairdocs.org/ad/99-17-16) (historical): Pratt & Whitney Division PW4050, PW4052, PW4056 and 11 more. Effective Sep 24, 1999 - [AD 99-08-15](https://openairdocs.org/ad/99-08-15) (historical): Pratt & Whitney Division PW4050, PW4052, PW4056 and 20 more. Effective May 13, 1999 All 249: https://openairdocs.org/aircraft/N521FE/ads.md ## Information bulletins (advisory) (10 in force) - [SAIB NM-18-33](https://openairdocs.org/saib/NM-18-33): Engine Fuel and Control. Issued Dec 17, 2018 - [SAIB NM-15-03](https://openairdocs.org/saib/NM-15-03): Flight Controls. Issued Nov 24, 2014 - [SAIB NM-09-03](https://openairdocs.org/saib/NM-09-03): Engine Fuel and Control - Implementing Fuel Tank System Airworthiness Limitations. Issued Dec 11, 2008 - [SAIB NM-07-31](https://openairdocs.org/saib/NM-07-31): Rigid hydraulic case drain lines. Issued Apr 24, 2007 - [SAIB NM-06-57](https://openairdocs.org/saib/NM-06-57): Reports of damage to airplanes and to property on the ground caused by blue or clear ice falling from airplanes.. Issued Jul 27, 2006 - [SAIB 2025-06](https://openairdocs.org/saib/2025-06): High Pressure Turbines. Issued Jul 22, 2025 - [SAIB NE-19-02](https://openairdocs.org/saib/NE-19-02): Turbine Engine Compressor Section -- Low-pressure turbine uncontainment. Issued Feb 19, 2019 - [SAIB NE-16-01R1](https://openairdocs.org/saib/NE-16-01R1): Turbine Section. Issued Jan 14, 2016 - [SAIB NE-15-19](https://openairdocs.org/saib/NE-15-19): Turbine Section. Issued Jul 14, 2015 - [SAIB NE-13-31](https://openairdocs.org/saib/NE-13-31): Turbine Engine Oil System Scavenge Oil Tube Coking and Proper Cleaning at Overhaul. Issued May 9, 2013 - [SAIB NE-16-01](https://openairdocs.org/saib/NE-16-01) (historical): Turbine Section. Issued Oct 5, 2015 ## NTSB investigations None matched to N521FE. ## FAA accident and incident reports None matched to N521FE. ## Service difficulty reports (471, 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 FDEA202610161599](https://openairdocs.org/sdr/FDEA202610161599), Oct 16, 2026: SEAT TRACK. DAMAGED. RAMP REPORTED BUSTED LOCK. LOCK IS FINE ITS THE SEAT TRACK LOBE THAT IS BUSTED. PLACED LOCK IN LEFT SIDE OVERHEAD COMPARTMENT IN THE FLIGHT DECK.THIS IS ON THE - [SDR FDEA202610161598](https://openairdocs.org/sdr/FDEA202610161598), Oct 16, 2026: SEAT TRACK. DAMAGED. RAMP REPORTED BUSTED LOCK. LOCK IS FINE ITS THE SEAT TRACK LOBE THAT IS BUSTED. PLACED LOCK IN LEFT SIDE OVERHEAD COMPARTMENT IN THE FLIGHT DECK.THIS IS ON THE - [SDR FDEA202605050546](https://openairdocs.org/sdr/FDEA202605050546), May 5, 2026: NACELLE. NOT REPORTED. NACELLES/PYLON - WING PYLON/STRUT - NO. 1 PYLON, INSPECTION AND REPAIR OF DAMAGE COMPLY WITH EA 1-5450-T0386263 REV NR POS. P2 COMPLY WITH E..A. 1-5450-T0386263 - [SDR FDEA202605050548](https://openairdocs.org/sdr/FDEA202605050548), May 5, 2026: PYLON. NOT REPORTED. WS-C 00091807 MOD TYPE T MOD NO. 1-5450-T0386263 REV NO. PS P4 NACELLES/PYLON - WING PYLON/STRUT - NO. 1 PYLON, INSPECTION AND REPAIR OF DAMAG COMPLY WITH E..A. - [SDR FDEA202605050547](https://openairdocs.org/sdr/FDEA202605050547), May 5, 2026: PYLON. NOT REPORTED. WS-C 00091807 MOD TYPE T MOD NO. 1-5450-T0386263 REV NO. PS P4 NACELLES/PYLON - WING PYLON/STRUT - NO. 1 PYLON, INSPECTION AND REPAIR OF DAMAG COMPLY WITH E..A. - [SDR FDEA202605050545](https://openairdocs.org/sdr/FDEA202605050545), May 5, 2026: PYLON. NOT REPORTED. WS-C 00091807 MOD TYPE T MOD NO. 1-5450-T0386807 REV NO. PS P2 NACELLES/PYLON - WING PYLON/STRUT - NO. 3 PYLON, INSPECTION AND REPAIR OF DAMAG COMPLY WITH E..A. - [SDR FDEA202605050544](https://openairdocs.org/sdr/FDEA202605050544), May 5, 2026: PYLON. NOT REPORTED. WS-C 00091807 MOD TYPE T MOD NO. 1-5450-T0386807 REV NO. PS P1 NACELLES/PYLON - WING PYLON/STRUT - NO. 3 PYLON, INSPECTION AND REPAIR OF DAMAGE COMPLY WITH E..A - [SDR FDEA202507161223](https://openairdocs.org/sdr/FDEA202507161223), Jul 16, 2025: PITOT TUBE. CLOGGED. RECEIVED ALT AND IAS ON TAKEOFF. ONCE AIRBORNE, IDENTIFIED #1 AIRSPEED/CADC WAS ERRONEOUS. COMPLETED CHECKLIST AND RETURNED FOR LANDING. PURGED CAPTAIN PITOT TU - [SDR FDEA202506261051](https://openairdocs.org/sdr/FDEA202506261051), Jun 26, 2025: ACCESS PANEL. DAMAGED. RIGHT WING - FUEL TANK ACCESS PANEL 636AB CUTOUT NUMBER 28 HOLE REPAIR BUSHING FOUND MISSING. RIGHT WING - FUEL TANK ACCESS PANEL 636AB CUTOUT NUMBER 28 HOLE RE - [SDR FDEA202506241035](https://openairdocs.org/sdr/FDEA202506241035), Jun 24, 2025: SEAT TRACK. WORN. CABIN - MAIN DECK CARGO COMPARTMENT FLOOR SEAT TRACK AT STATION 6-10 X= -8.5" FOUND CROWN WORN. CABIN - MAIN DECK CARGO COMPARTMENT FLOOR SEAT TRACK AT STATION - [SDR FDEA202506241034](https://openairdocs.org/sdr/FDEA202506241034), Jun 24, 2025: SEAT TRACK. WORN. CABIN - MAIN DECK CARGO COMPARTMENT FLOOR SEAT TRACK AT STATION 6-10 X= 47.5" FOUND CROWN WORN. CABIN - MAIN DECK CARGO COMPARTMENT FLOOR SEAT TRACK AT STATION - [SDR FDEA202506191004](https://openairdocs.org/sdr/FDEA202506191004), Jun 19, 2025: LONGERON. CORRODED. CENTER CARGO - RIGHT HAND STATION 1661 LONGERON - 39 RIGHT LONGERON FOUND CORROSION. CORROSION ON LONGERON AT CENTER CARGO STATION 1661, LONGERON -39 RIGHT EVAL - [SDR FDEA202506191003](https://openairdocs.org/sdr/FDEA202506191003), Jun 19, 2025: LONGERON. CORRODED. CENTER CARGO - RIGHT HAND STATION 1641 LONGERON - 39 RIGHT LONGERON FOUND CORROSION. CORROSION ON LONGERON AT CENTER CARGO STATION 1641, LONGERON -39 RIGHT EVAL - [SDR FDEA202506191002](https://openairdocs.org/sdr/FDEA202506191002), Jun 19, 2025: LONGERON. CORRODED. CENTER CARGO - RIGHT HAND STATION 1621 LONGERON - 39 RIGHT LONGERON FOUND CORROSION. CORROSION ON LONGERON AT CENTER CARGO STATION 1621, LONGERON -39 RIGHT EVAL - [SDR FDEA202506191001](https://openairdocs.org/sdr/FDEA202506191001), Jun 19, 2025: LONGERON. CORRODED. CENTER CARGO - RIGHT HAND STATION 1601 LONGERON - 39 RIGHT LONGERON FOUND CORROSION. CORROSION ON LONGERON AT CENTER CARGO STATION 1601, LONGERON -39 RIGHT EVAL - [SDR FDEA202506191000](https://openairdocs.org/sdr/FDEA202506191000), Jun 19, 2025: LONGERON. CORRODED. CTR CARGO - RIGHT HAND STATION 1561 LONGERON - 39 RIGHT FOUND CORROSION. CORROSION ON LONGERON AT CTR CARGO STATION 1561, LONGERON -39 RIGHT AND FOUND EXFOLIATE - [SDR FDEA202506190999](https://openairdocs.org/sdr/FDEA202506190999), Jun 19, 2025: LONGERON. CORRODED. CTR CARGO - RIGHT HAND STATION 5-123 LONGERON - 39 RIGHT FOUND CORROSION. CORROSION ON LONGERON AT CTR CARGO STATION 5-123, LONGERON -39 RIGHT AND FOUND EXFOLIA - [SDR FDEA202506190998](https://openairdocs.org/sdr/FDEA202506190998), Jun 19, 2025: REPAIR. NOT REPORTED. CTR CARGO - TO REMOVE AND REPAIR EXISTING REPAIR AS REQUIRED ON T/C T 1-5330-T0301688 A P5. - [SDR FDEA202506150954](https://openairdocs.org/sdr/FDEA202506150954), Jun 15, 2025: STRINGER. CRACKED. UPPER AUXILIARY TANK - STRINGER 47 AT STATION XCW 46.5 FOUND CRACK DURING PERFORMING W/C 57.20.01.3. UPPER AUXILIARY TANK STRINGER 47 AT STATION XCW 46.5 AREA R - [SDR FDEA202506150953](https://openairdocs.org/sdr/FDEA202506150953), Jun 15, 2025: STRINGER. CRACKED. UPPER AUXILIARY TANK - STRINGER 47 AT STATION XCW 17 FOUND CRACK DURING PERFORMING W/C 57.20.01.3. UPPER AUXILIARY TANK STRINGER 47 AT STATION XCW 17 AREA REPAI - [SDR FDEA202506150952](https://openairdocs.org/sdr/FDEA202506150952), Jun 15, 2025: SEAT TRACK. WORN. CABIN - MAIN DECK CARGO COMPARTMENT FLOOR SEAT TRACK AT STATION 1425 X= -47.5 INCH FOUND CROWN WORN. CABIN - MAIN DECK CARGO COMPARTMENT FLOOR SEAT TRACK AT STA - [SDR FDEA202506150951](https://openairdocs.org/sdr/FDEA202506150951), Jun 15, 2025: SEAT TRACK. WORN. CABIN - MAIN DECK CARGO COMPARTMENT FLOOR SEAT TRACK AT STATION 1425 X= 8.5 INCH FOUND CROWN WORN. CABIN - MAIN DECK CARGO COMPARTMENT FLOOR SEAT TRACK AT STATI - [SDR FDEA202506150950](https://openairdocs.org/sdr/FDEA202506150950), Jun 15, 2025: SEAT TRACK. WORN. CABIN - MAIN DECK CARGO COMPARTMENT FLOOR SEAT TRACK AT STATION 1278 X= -8.5 INCH CROWN WORN. CABIN - MAIN DECK CARGO COMPARTMENT FLOOR SEAT TRACK AT STATION 12 - [SDR FDEA202506150949](https://openairdocs.org/sdr/FDEA202506150949), Jun 15, 2025: SEAT TRACK. WORN. CABIN - MAIN DECK CARGO COMPARTMENT FLOOR SEAT TRACK AT STATION 1278 X= 8.5 INCH CROWN WORN. CABIN - MAIN DECK CARGO COMPARTMENT FLOOR SEAT TRACK AT STATION 127 - [SDR FDEA202506150948](https://openairdocs.org/sdr/FDEA202506150948), Jun 15, 2025: SEAT TRACK. WORN. CABIN - MAIN DECK CARGO COMPARTMENT FLOOR SEAT TRACK AT STATION 1278 X=47.5 INCH CROWN WORN. CABIN - MAIN DECK CARGO COMPARTMENT FLOOR SEAT TRACK AT STATION 127 - [SDR FDEA202506150947](https://openairdocs.org/sdr/FDEA202506150947), Jun 15, 2025: SEAT TRACK. WORN. CABIN - MAIN DECK CARGO COMPARTMENT FLOOR SEAT TRACK AT STATION 5-11 X= 47.5" CROWN WORN. CABIN - MAIN DECK CARGO COMPARTMENT FLOOR SEAT TRACK AT STATION 5-11 X - [SDR FDEA202506150946](https://openairdocs.org/sdr/FDEA202506150946), Jun 15, 2025: SEAT TRACK. WORN. CABIN - MAIN DECK CARGO COMPARTMENT FLOOR SEAT TRACK AT STATION 5-11 X= 27.5" CROWN WORN. CABIN - MAIN DECK CARGO COMPARTMENT FLOOR SEAT TRACK AT STATION 5-11 X - [SDR FDEA202506150945](https://openairdocs.org/sdr/FDEA202506150945), Jun 15, 2025: SEAT TRACK. WORN. CABIN - MAIN DECK CARGO COMPARTMENT FLOOR SEAT TRACK AT STATION 5-11 X= -27.5" CROWN WORN. CABIN - MAIN DECK CARGO COMPARTMENT FLOOR SEAT TRACK AT STATION 5-11 - [SDR FDEA202506150944](https://openairdocs.org/sdr/FDEA202506150944), Jun 15, 2025: SEAT TRACK. WORN. CABIN - MAIN DECK CARGO COMPARTMENT FLOOR SEAT TRACK AT STATION 1425 X=-8.5" FOUND CROWN WORN. CABIN - MAIN DECK CARGO COMPARTMENT FLOOR SEAT TRACK AT STATION 1 - [SDR FDEA202506150943](https://openairdocs.org/sdr/FDEA202506150943), Jun 15, 2025: SEAT TRACK. CORRODED. CABIN - MAIN DECK CARGO COMPT FLOOR SEAT TRACK AT STATION 1410 X=-27.5" WITH EXFOLIATION CORROSION. CABIN - MAIN DECK CARGO COMPARTMENT FLOOR SEAT TRACK AT STAT - [SDR FDEA202506100874](https://openairdocs.org/sdr/FDEA202506100874), Jun 10, 2025: RIB. CRACKED. LEFT WING - FIXED LEADING EDGE RIB DOUBLER AT STATION XOS 789 FOUND CRACK ABOUT 2 INCH. LT WING FIXED LEADING EDGE CRACKED RIB DOUBLER AT STATION XOS 789 REMOVE - [SDR FDEA202506100873](https://openairdocs.org/sdr/FDEA202506100873), Jun 10, 2025: FORMER. CRACKED. LEFT WING - FIXED LEADING EDGE UPPER FORMER AT STATION XOS 584 FOUND CRACK ABOUT 5 INCHES. LT WING FIXED LEADING EDGE UPPER CRACKED FORMER AT STATION XOS 584 RE - [SDR FDEA202506100872](https://openairdocs.org/sdr/FDEA202506100872), Jun 10, 2025: DOUBLER. CRACKED. RIGHT WING - FIXED LEADING EDGE BEADED DOUBLER AT STATION XOS 706 FOUND CRACK ABOUT 0.2 INCH. RT WING FIXED LEADING EDGE CRACKED BEADED DOUBLER AT STATION XOS 7 - [SDR FDEA202506100871](https://openairdocs.org/sdr/FDEA202506100871), Jun 10, 2025: SEAT TRACK. WORN. CABIN - MAIN DECK CARGO COMPARTMENT FLOOR SEAT TRACK AT STA 879 X= -8.5 FOUND CROWN WORN. CABIN - MAIN DECK CARGO COMPARTMENT FLOOR SEAT TRACK AT STATION 879 X= - [SDR FDEA202506100870](https://openairdocs.org/sdr/FDEA202506100870), Jun 10, 2025: SEAT TRACK. WORN. CABIN - MAIN DECK CARGO COMPARTMENT FLOOR SEAT TRACK AT STATION 879 X= 8.5" FOUND CROWN WORN. CABIN - MAIN DECK CARGO COMPARTMENT FLOOR SEAT TRACK AT STATION 87 - [SDR FDEA202506100869](https://openairdocs.org/sdr/FDEA202506100869), Jun 10, 2025: SEAT TRACK. WORN. CABIN - MAIN DECK CARGO COMPARTMENT FLOOR SEAT TRACK AT STATION 6-10 X= -8.5 INCH FOUND CROWN WORN. CABIN - MAIN DECK CARGO COMPARTMENT FLOOR SEAT TRACK AT STAT - [SDR FDEA202506100868](https://openairdocs.org/sdr/FDEA202506100868), Jun 10, 2025: SEAT TRACK. WORN. CABIN - MAIN DECK CARGO COMPARTMENT FLOOR SEAT TRACK AT STATION 6-10 X= 47.5 INCH FOUND CROWN WORN. CABIN - MAIN DECK CARGO COMPARTMENT FLOOR SEAT TRACK AT STAT - [SDR FDEA202506100867](https://openairdocs.org/sdr/FDEA202506100867), Jun 10, 2025: SEAT TRACK. CORRODED. CABIN - MAIN DECK CARGO COMPARTMENT FLOOR SEAT TRACK AT STATION 1199 X= 8.5 INCH FOUND WITH EXFOLIATION CORROSION. CABIN - MAIN DECK CARGO COMPARTMENT FLOOR SEA - [SDR FDEA202506100866](https://openairdocs.org/sdr/FDEA202506100866), Jun 10, 2025: SEAT TRACK. CORRODED. CABIN - MAIN DECK CARGO COMPARTMENT FLOOR SEAT TRACK AT STA 1019 X= -8.5" FOUND WITH EXFOLIATION CORROSION. CABIN - MAIN DECK CARGO COMPARTMENT FLOOR SEAT TRACK - [SDR FDEA202506100865](https://openairdocs.org/sdr/FDEA202506100865), Jun 10, 2025: REPAIR. WORN. CENTER CARGO - TO REMOVE AND REPAIR EXISTING REPAIR AS REQUIRED ON T/C T 1-5330- T0301688 A P5. EXISTING REPAIR DOUBLERS AT CENTER CARGO DOOR CUTOUT AFT JAMB ST - [SDR FDEA202504210623](https://openairdocs.org/sdr/FDEA202504210623), Apr 21, 2025: BATTERY PACK. NO TEST. DURING PREFLIGHT LEVEL 1 EMER LT BAT 1 LO REPLACED EMERGENCY LIGHTING BATTERY POWER SUPPLY PER MD11 M/M 33-51-01-4 OPS CHECKS NORMAL PER MD11 M/M 33-51-01-5 REC - [SDR FDEA202501240133](https://openairdocs.org/sdr/FDEA202501240133), Jan 24, 2025: SEAT TRACK. WORN. FLOOR LOCK SEAT TRACK DAMAGED 6R. LOCK ID X1035. 6R LIMIT TO 9060 LBS. SRM: 53-00-52-1A SEAT TRACK DAMAGE CONFINED TO LOBE. OKAY FOR SERVICE REF SRM ABOVE. FLOO - [SDR FDEA202308151439](https://openairdocs.org/sdr/FDEA202308151439), Aug 15, 2023: ENGINE. FAILED. ENG 3 RPM LOW ALERT FILLED BY FADEC MAINT ALERT. ATTEMPTED AIR START WITH NO SUCCESS. SECURED ENGINE. EMERGENCY DECLARED R&R FCU/PUMP/EEC. FOUND INTERNALLY DAMA - [SDR FDEA202307031138](https://openairdocs.org/sdr/FDEA202307031138), Jul 3, 2023: CAP. CORRODED. LEFT HAND WING TRAILING EDGE OUTBOARD ISLAND COMPARTMENT LOWER SPAR CAP FOUND WITH CORROSION AT STATION XORS 1045 - XORS 1083. CORROSION AT LEFT HAND WING TRAIL - [SDR FDEA202306291128](https://openairdocs.org/sdr/FDEA202306291128), Jun 29, 2023: SKIN. CORRODED. EMPENNAGE-AFT ACCESSORY COMPARTMENT RIGHT HAND SIDE APPROXIMATE STATION 2135- 2145 AROUND LONGERON 35 RIGHT FOUND CORRODED. CORROSION AT EMPENNAGE-AFT ACCESSORY - [SDR FDEA202306291127](https://openairdocs.org/sdr/FDEA202306291127), Jun 29, 2023: SKIN. CRACKED. HIGH FREQUENCY EDDY CURRENT INSP FOUND CRACK INDICATION APPROXIMATE 0.2" IN LENGTH AT LT WING FIXED LEADING EDGE SKIN ADJACENT TO CUTOUT AT CORNER NR 11 FUEL AC - [SDR FDEA202306271114](https://openairdocs.org/sdr/FDEA202306271114), Jun 27, 2023: DOUBLER. CRACKED. LEFT HAND WING FIXED LEADING EDGE INTERNAL BEADED DOUBLER FOUND CRACK AT STATION XOS 879. LEFT HAND WING FIXED LEADING EDGE INTERNAL DOUBLER AT STATION XOS 879 - [SDR FDEA202306271113](https://openairdocs.org/sdr/FDEA202306271113), Jun 27, 2023: DOUBLER. CRACKED. LEFT HAND WING FIXED LEADING EDGE INTERNAL BEADED DOUBLER FOUND CRACK AT STATION XOS 769. LEFT HAND WING FIXED LEADING EDGE INTERNAL DOUBLER AT STATION XOS 769 - [SDR FDEA202306271112](https://openairdocs.org/sdr/FDEA202306271112), Jun 27, 2023: DOUBLER. CRACKED. LEFT HAND WING FIXED LEADING EDGE INTERNAL BEADED DOUBLER FOUND CRACK AT STATION XOS 769. LEFT HAND WING FIXED LEADING EDGE INTERNAL DOUBLER AT STATION XOS 769 - [SDR FDEA202306271111](https://openairdocs.org/sdr/FDEA202306271111), Jun 27, 2023: DOUBLER. CRACKED. LEFT HAND WING FIXED LEADING EDGE INTERNAL BEADED DOUBLER FOUND CRACK AT STATION XOS 647. LEFT HAND WING FIXED LEADING EDGE INTERNAL DOUBLER AT STATION XOS 647 All 471: https://openairdocs.org/aircraft/N521FE/reports.md ## STCs that may be installed (OpenAirDocs) (122, first 50) 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 airframe (Mcdonnell Douglas MD-11F) - [STC ST00885LA](https://openairdocs.org/stc/ST00885LA): Installation of fire extinguisher cartridges as replacements for Pacific Scientific fire extinguisher cartridges in fire extinguisher bottles. AMETEK AMERON, LLC d/b/a MASS Systems - [STC ST00952LA](https://openairdocs.org/stc/ST00952LA): Installation of Mass Systems fire extinguisher cartridges as replacements for Kidde fire extinguisher cartridges in fire extinguisher bottles. AMETEK AMERON LLC d/b/a MASS Systems - [STC SA2622NM](https://openairdocs.org/stc/SA2622NM): Installation of Precise Flight Pulselite Control Unit in landing/taxi system. (767-200 B17) (DHC-8 101). Precise Flight Inc - [STC ST00892LA](https://openairdocs.org/stc/ST00892LA): Installation of Emergency Vision Assurance System (EVAS). VisionSafe LLC - [STC ST00030IB](https://openairdocs.org/stc/ST00030IB): Installation of Test Tech ELT. APTOZ EHF - [STC ST03885AT](https://openairdocs.org/stc/ST03885AT): Installation of an Avionica, Inc. avCM Cellular Module. Aircraft Systems and Manufacturing Inc - [STC SA7065NM](https://openairdocs.org/stc/SA7065NM): Installation of Closet Assembly. Safran Cabin Inc - [STC ST01391LA](https://openairdocs.org/stc/ST01391LA): Installation of a reinforced cockpit door. Safran Cabin Inc - [STC ST02111LA](https://openairdocs.org/stc/ST02111LA): Installation of Coatroom. Safran Cabin Inc - [STC ST02472AT](https://openairdocs.org/stc/ST02472AT): Installation of a mini Quick Access Recorder (QAR) model MKI, MKII, or MKIII. Aircraft Systems and Manufacturing Inc - [STC ST02117CH](https://openairdocs.org/stc/ST02117CH): Installation of Honeywell Enhanced Ground Proximity Warning System and GPS antenna. Amphenol Cable and Interconnect Technologies Inc - [STC ST02184CH](https://openairdocs.org/stc/ST02184CH): Installation of elementary or enhanced surveillance Mode S transponders. Amphenol Cable and Interconnect Technologies Inc - [STC ST02708CH](https://openairdocs.org/stc/ST02708CH): Installation of EZMountTM Arm mechanical mounting assemblies on lower frame of cockpit sliding windows. Amphenol Cable and Interconnect Technologies Inc - [STC ST02865CH](https://openairdocs.org/stc/ST02865CH): Upgrade of the internal core software of the ACARS Communications Management Unit (CMU-900). Amphenol Cable and Interconnect Technologies Inc - [STC ST00079IB](https://openairdocs.org/stc/ST00079IB): Integration of Halon-free Portable Fire Extinguisher HAFEX. UMLAUT ENGINEERING GMBH - [STC ST01936WI](https://openairdocs.org/stc/ST01936WI): Installation of LED lights. AeroLED's Holdings LLC - [STC ST02002WI](https://openairdocs.org/stc/ST02002WI): Replacement of Rockwell Collins LRA-900 Low Range Radio Altimeters with upgraded LRA-900 units for improved RF immunity to 5G cellular data interference. Rockwell Collins, Inc - [STC ST01986CH](https://openairdocs.org/stc/ST01986CH): Installation of a Honeywell RESCU 406AF Emergency Locator Transmitter (ELT) system. Honeywell International Inc - [STC ST03516AT](https://openairdocs.org/stc/ST03516AT): Installation of dual Artex Model C406-N Emergency Locator Transmitters (ELT). Woven Electronics, LLC - [STC ST04538AT](https://openairdocs.org/stc/ST04538AT): Installation of the Cobham Aviator 200S INMARSAT SATCOM Communication System and external HELGA Low Gain Antenna. Avionics Support Group Inc - [STC ST01719SE](https://openairdocs.org/stc/ST01719SE): Lavatory installation on MD-11F Series airplanes. Commercial Aircraft Interiors Inc - [STC ST01813SE](https://openairdocs.org/stc/ST01813SE): Lavatory installation on Model MD-11F Series airplanes. Commercial Aircraft Interiors - [STC ST00536SE](https://openairdocs.org/stc/ST00536SE): Installation of the Honeywell MK VII Enhanced Ground Proximity Warning System (EGPWS). Honeywell International Inc - [STC SA5672SW-D](https://openairdocs.org/stc/SA5672SW-D): Modification of air to air heat exchanger (P/N 187900-9). Honeywell International Inc - [STC SA8757SW](https://openairdocs.org/stc/SA8757SW): Replace core assembly of Janitrol Constant Speed Drive (CSD) Oil Cooler, part number B63D89. Honeywell International Inc - [STC ST04517AT](https://openairdocs.org/stc/ST04517AT): Installation of hardware to existing side conveyor assemblies. United Parcel Service Company - [STC ST03879AT](https://openairdocs.org/stc/ST03879AT): Installation of Talon Aerospace Cargo Lights. Aaxico Technical Services Inc - [STC ST03574AT](https://openairdocs.org/stc/ST03574AT): Installation of a Talon Aerospace Anti-Collision Light. Aaxico Technical Services Inc - [STC ST04002AT](https://openairdocs.org/stc/ST04002AT): Installation of a Talon LED Replacement Wing and Tail Mounted Anti-Collision Lights. Aaxico Technical Services Inc - [STC ST04177AT](https://openairdocs.org/stc/ST04177AT): Installation of a Talon Aerospace LED Replacement General Purpose Lamps. Aaxico Technical Services Inc - [STC ST04092NY](https://openairdocs.org/stc/ST04092NY): Installation of Wireless PCMCIA for DFDAU. Delta Engineering Corporation - [STC ST02532LA](https://openairdocs.org/stc/ST02532LA): Modify the wing fuel tanks access cover installation by replacing the existing rubstrip and seal with a new encapsulated wire mesh gasket and a new seal. Aviation Devices & Electronic Components LLC - [STC ST04546NY](https://openairdocs.org/stc/ST04546NY): Installation of Sleeper Seat at Courier Module. Lufthansa Technik AG - [STC ST04547NY](https://openairdocs.org/stc/ST04547NY): Installation of a Secondary Flight Display System (SFDS). Lufthansa Technik AG - [STC ST04542NY](https://openairdocs.org/stc/ST04542NY): Installation of TCAS Change 7.1. Lufthansa Technik AG - [STC ST04543NY](https://openairdocs.org/stc/ST04543NY): Installation of a Global Navigation Satellite Sensor Unit (GNSSU) Replacement. Lufthansa Technik AG - [STC ST04544NY](https://openairdocs.org/stc/ST04544NY): Activation of ADS-B and ELS/EHS Upgrade. Lufthansa Technik AG - [STC ST01943WI](https://openairdocs.org/stc/ST01943WI): Modification of Rockwell Collins, Inc. Multi-Mode Receiver (MMR) Global Landing System (GLU-2100). Rockwell Collins Inc - [STC ST02669LA](https://openairdocs.org/stc/ST02669LA): Installation of Honeywell MKV EGPWS with Landing Performance Enhancement (LPE) functionality. Honeywell International Inc - [STC ST01276WI-D](https://openairdocs.org/stc/ST01276WI-D): Collins CMU-900 ACARS CORE Software Upgrade. Rockwell Collins Inc - [STC ST02572SE](https://openairdocs.org/stc/ST02572SE): Operated in accordance with the Supplement to United Parcel Service (UPS) Airlines Weight and Balance Manual TTF-16T004-20-1 Revision A, dated October 31, 2017 as listed on the AML. United Parcel Service Company - [STC SA5546NM](https://openairdocs.org/stc/SA5546NM): Installation of a cabin cargo handling system. Ancra International LLC - [STC ST00152LA](https://openairdocs.org/stc/ST00152LA): Installation of Ancra International Cargo Handling System. Ancra International LLC - [STC ST01120LA](https://openairdocs.org/stc/ST01120LA): Installation of insulation blankets. Triumph Insulation Systems LLC - [STC ST04340NY](https://openairdocs.org/stc/ST04340NY): Installation of TCAS 7.1 (ACAS II) upgrade of Prior Existing TCAS 7.0. Scandinavian Avionics Design ApS - [STC ST00353LA-1](https://openairdocs.org/stc/ST00353LA-1): Installation of Aircraft Communications, Addressing and Reporting System (ACARS). Teledyne Controls - [STC ST00399DE](https://openairdocs.org/stc/ST00399DE): Installation of nose radome shell assembly. The NORDAM Group LLC - [STC ST02639LA](https://openairdocs.org/stc/ST02639LA): Replace the existing Mode S Transponder system. Aviation Communication and Surveillance Systems (ACSS) LLC - [STC ST01895WI](https://openairdocs.org/stc/ST01895WI): Modification of an existing Rockwell Collins Global Landing Unit (GLU) Multi-Mode Receiver (MMR), Sensor Systems Inc. GPS Antenna and ACSS Transponder Installation. Rockwell International Collins Commercial Avionics - [STC ST02636LA](https://openairdocs.org/stc/ST02636LA): Modification to upgrade the existing XS-950 Mode S Transponder system to add ADS-B Out. Aviation Communication and Surveillance Systems (ACSS) LLC All 122: https://openairdocs.org/aircraft/N521FE/stcs.md ## Related - Other Mcdonnell Douglas MD-11F aircraft: https://openairdocs.org/model/mcdonnell-douglas-md-11f/aircraft.md - The Pratt & Whitney PW4462 engine: https://openairdocs.org/engine/pratt-whitney-pw4462.md --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.