N50NB

01 /  Registration

Filed with the Federal Aviation Administration

Every cell below is a literal field from the FAA Aircraft Registry. Click any value to open the FAA registry record for N50NB.

02 /  NTSB Records

Events on file with the National Transportation Safety Board

03 /  Airworthiness Directives

Applicable to CESSNA S550

Federal Aviation Administration airworthiness directives matched to make and model. Each entry links to the Federal Register publication.

• Aug 25, 2015

  Airworthiness Directives; Cessna Aircraft Company Airplanes

  We are adopting a new airworthiness directive (AD) for certain Cessna Aircraft Company Model 500, 501, 550, 551, S550, 560, and 650 airplanes. This AD was prompted by reports of smoke and/or fire in the tailcone caused by sparking due to excessive wear of the brushes in the air conditioning (A/C) motor. This AD requires inspections to determine if certain A…

  Federal Register →

• Jan 23, 2015

  Airworthiness Directives; Cessna Aircraft Company Airplanes

  We propose to adopt a new airworthiness directive (AD) for certain Cessna Aircraft Company Model 500, 501, 550, 551, S550, 560, and 650 airplanes. This proposed AD was prompted by reports of smoke and/or fire in the tailcone caused by sparking due to excessive wear of the brushes in the air conditioning (A/C) motor. This proposed AD would require inspection…

  Federal Register →

• May 30, 2013

  Airworthiness Directives; Cessna Aircraft Company Airplanes

  We are adopting a new airworthiness directive (AD) for certain Cessna Aircraft Company Model 500, 501, 550, 551, S550, 560, 560XL, and 650 airplanes. This AD was prompted by multiple reports of smoke and/or fire in the tailcone caused by sparking due to excessive wear of the brushes in the air conditioning (A/C) motor. This AD requires inspecting to determi…

  Federal Register →

• Feb 11, 2013

  Airworthiness Directives; Cessna Aircraft Company Airplanes

  We are revising an earlier proposed airworthiness directive (AD) for certain Cessna Aircraft Company Model 500, 501, 550, 551, S550, 560, 560XL, and 650 airplanes. That NPRM proposed to require an inspection to determine if certain air conditioning (A/C) compressor motors are installed and to determine the accumulated hours on certain A/C drive motor assemb…

  Federal Register →

• Sep 26, 2012

  Airworthiness Directives; Cessna Aircraft Company Airplanes

  We propose to adopt a new airworthiness directive (AD) for certain Cessna Aircraft Company Model 500, 501, 550, 551, S550, 560, 560XL, and 650 airplanes. This proposed AD was prompted by multiple reports of smoke and/or fire in the tailcone caused by sparking due to excessive wear of the brushes in the air conditioning (A/C) motor. This proposed AD would re…

  Federal Register →

• Aug 22, 2008

  Airworthiness Directives; Pratt & Whitney Canada (P&WC) JT15D-5; -5B; -5F; and -5R Turbofan Engines

  We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as follows:

  Federal Register →

• Jun 13, 2008

  Airworthiness Directives; Sandel Avionics Incorporated Model ST3400 Terrain Awareness Warning System/Radio Magnetic Indicator (TAWS/RMI) Units Approved Under Technical Standard Order(s) C113, C151a, or C151b; Installed on Various Small and Transport Category Airplanes

  The FAA is revising an existing airworthiness directive (AD) that applies to Sandel Avionics Incorporated Model ST3400 TAWS/RMI units as described above. The existing AD currently requires installing a warning placard on the TAWS/RMI and revising the Limitations section of the airplane flight manual (AFM). The existing AD also requires installing upgraded s…

  Federal Register →

• Mar 13, 2008

  Airworthiness Directives; Sandel Avionics Incorporated Model ST3400 Terrain Awareness Warning System/Radio Magnetic Indicator (TAWS/RMI) Units Approved Under Technical Standard Order(s) C113, C151a, or C151b; Installed on Various Small and Transport Category Airplanes

  The FAA proposes to revise an existing airworthiness directive (AD) that applies to Sandel Avionics Incorporated Model ST3400 TAWS/RMI units as described above. The existing AD currently requires installing a warning placard on the TAWS/RMI and revising the Limitations section of the airplane flight manual (AFM). The existing AD also requires installing upg…

  Federal Register →

• Jun 1, 2007

  Airworthiness Directives; Cessna Model 500, 501, 550, 551, S550, 560, 560XL, and 750 Airplanes

  The FAA is superseding an existing airworthiness directive (AD), which applies to certain Cessna Model 500, 550, S550, 560, 560XL, and 750 airplanes. That AD currently requires installing identification sleeves on the wires for the positive and negative terminal studs of the engine and/or auxiliary power unit (APU) fire extinguishing bottles, as applicable,…

  Federal Register →

• Feb 15, 2007

  Airworthiness Directives; Cessna Model 500, 501, 550, 551, S550, 560, 560XL, and 750 Airplanes

  The FAA proposes to supersede an existing airworthiness directive (AD) that applies to certain Cessna Model 500, 550, S550, 560, 560XL, and 750 airplanes. The existing AD currently requires installing identification sleeves on the wires for the positive and negative terminal studs of the engine and/or auxiliary power unit (APU) fire extinguishing bottles, a…

  Federal Register →

• Aug 21, 2006

  Airworthiness Directives; Sandel Avionics Incorporated Model ST3400 Terrain Awareness Warning System/Radio Magnetic Indicator (TAWS/RMI) Units Approved Under Technical Standard Order(s) C113, C151a, or C151b; Installed on Various Small and Transport Category Airplanes

  The FAA is adopting a new airworthiness directive (AD). The new AD is for Sandel Avionics Incorporated Model ST3400 TAWS/RMI units as described above. This AD requires installing a warning placard on the TAWS/RMI and revising the Limitations section of the airplane flight manual (AFM). This AD also requires installing upgraded software in the TAWS/RMI. This…

  Federal Register →

• Mar 16, 2006

  Airworthiness Directives; Cessna Model 500, 501, 550, S550, 551, and 560 Airplanes

  The FAA is adopting a new airworthiness directive (AD) for certain Cessna Model 500, 501, 550, S550, 551, and 560 airplanes. This AD requires revising the airplane flight manual (AFM) to prohibit use of the wing fuel boost pumps for defueling under certain conditions; installing a placard; doing other specified investigative and corrective actions as necess…

  Federal Register →

• Mar 8, 2006

  Airworthiness Directives; Sandel Avionics Incorporated Model ST3400 Terrain Awareness Warning System/Radio Magnetic Indicator Approved Under Technical Standard Order(s) C113, C151a, or C151b; Installed on Various Small and Transport Category Airplanes

  The FAA proposes to adopt a new airworthiness directive (AD). The new AD is for Sandel Avionics Incorporated Model ST3400 terrain awareness warning systems/radio magnetic indicator (TAWS/RMI) units as described above. This proposed AD would require installing a warning placard on the TAWS/RMI, installing upgraded software in the TAWS/RMI, revising the limit…

  Federal Register →

• Feb 17, 2006

  Airworthiness Directives; Cessna Model 500, 550, S550, 560, 560XL, and 750 Airplanes

  The FAA is adopting a new airworthiness directive (AD) for certain Cessna Model 500, 550, S550, 560, 560XL, and 750 airplanes. This AD requires installing identification sleeves on the wires for the positive and negative terminal studs of the engine and/or auxiliary power unit (APU) fire extinguishing bottles, as applicable, and re- connecting the wires to…

  Federal Register →

• Oct 25, 2005

  Airworthiness Directives; Cessna Model 500, 501, 550, S550, 551, and 560 Airplanes

  The FAA is revising an earlier proposed airworthiness directive (AD) for certain Cessna Model 500, 501, 550, S550, 551, and 560 airplanes. The original NPRM would have required revising the airplane flight manual (AFM) to prohibit use of the wing fuel boost pumps for defueling under certain conditions; installing a placard; doing other specified investigati…

  Federal Register →

• Sep 30, 2005

  Airworthiness Directives; Cessna Model 500, 550, S550, 560, 560XL, and 750 Airplanes

  The FAA proposes to adopt a new airworthiness directive (AD) for certain Cessna Model 500, 550, S550, 560, 560XL, and 750 airplanes. This proposed AD would require installing identification sleeves on the wires for the positive and negative terminal studs of the engine and/or auxiliary power unit (APU) fire extinguishing bottles, as applicable, and re-conne…

  Federal Register →

• Apr 18, 2005

  Airworthiness Directives; Cessna Model 500, 501, 550, S550, 551, and 560 Airplanes

  The FAA proposes to adopt a new airworthiness directive (AD) for certain Cessna Model 500, 501, 550, S550, 551, and 560 airplanes. This proposed AD would require revising the airplane flight manual (AFM) to prohibit use of the wing fuel boost pumps for defueling under certain conditions; installing a placard; doing other specified investigative and correcti…

  Federal Register →

• Apr 21, 2004

  Airworthiness Directives; Goodrich Avionics Systems, Inc. TAWS8000 Terrain Awareness Warning System

  The FAA supersedes Airworthiness Directive (AD) 2003-13-08, which currently applies to all Goodrich Avionics Systems, Inc. (Goodrich) TAWS8000 terrain awareness warning systems (TAWS) that are installed on airplanes. AD 2003-13-08 currently requires you to inspect the TAWS installation and remove any TAWS where both the TAWS and any other device are connect…

  Federal Register →

• Dec 3, 2003

  Airworthiness Directives; Goodrich Avionics Systems, Inc. TAWS8000 Terrain Awareness Warning System

  The FAA proposes to supersede airworthiness directive (AD) 2003-13-08, which currently applies to all Goodrich Avionics Systems, Inc. (Goodrich) TAWS8000 terrain awareness warning systems (TAWS) that are installed on airplanes. AD 2003-13-08 currently requires you to inspect the TAWS installation and remove any TAWS where both the TAWS and any other device…

  Federal Register →

• Jun 30, 2003

  Airworthiness Directives; Goodrich Avionics Systems, Inc. TAWS8000 Terrain Awareness Warning System

  This amendment adopts a new airworthiness directive (AD) that applies to all Goodrich Avionics Systems, Inc. (Goodrich) TAWS8000 terrain awareness warning systems (TAWS) that are installed on airplanes. This AD requires you to inspect the TAWS installation and remove any TAWS where both the TAWS and any other device are connected to the same baro set potent…

  Federal Register →

• Dec 3, 2001

  Airworthiness Directives; GARMIN International GNS 430 Units

  This amendment adopts a new airworthiness directive (AD) that applies to certain GARMIN International (GARMIN) GNS 430 units that are installed on aircraft. This AD requires you to modify the unit to incorporate circuitry changes to the GNS 430 unit's deviation and flag outputs. This AD is the result of reports of inaccurate course deviations caused by exte…

  Federal Register →

• Nov 2, 2001

  Airworthiness Directives; Overland Aviation Services Fire Extinguishing System Bottle Cartridges

  This amendment adopts a new airworthiness directive (AD) that applies to certain Overland Aviation Services (OAS) fire extinguishing system bottle cartridges that were distributed during a certain time period and are installed on aircraft. This AD requires you to remove from service any of these fire extinguishing system bottle cartridges. This AD is the re…

  Federal Register →

• Aug 6, 2001

  Airworthiness Directives; GARMIN International GNS 430 Units

  This document proposes to adopt a new airworthiness directive (AD) that would apply to certain GARMIN International (GARMIN) GNS 430 units that are installed on aircraft. The proposed AD would require you to modify the unit to incorporate circuitry changes to the GNS 430 unit's deviation and flag outputs. The proposed AD is the result of reports of inaccura…

  Federal Register →

• Jul 12, 1999

  Airworthiness Directives; Overland Aviation Services Fire Extinguishing System Bottle Cartridges

  This document proposes to adopt a new airworthiness directive (AD) that would apply to certain Overland Aviation Services fire extinguishing system bottle cartridges that were distributed during a certain time period. The proposed AD would require removing from service any of these fire extinguishing system bottle cartridges. The proposed AD is the result o…

  Federal Register →

04 /  Service Difficulty Reports

FAA SDR filings

The FAA does not currently expose a public API for Service Difficulty Reports. We do not back-fill or paraphrase. Search the FAA SDR portal directly →

05 /  Sources & Methodology

Every fact on this page links to its primary US-government source

• FAA Aircraft Registry →

  Refreshed May 5, 2026

  Available

• NTSB CAROL →

  Refreshed May 5, 2026

  Available

• Federal Register (FAA Airworthiness Directives) →

  Refreshed May 5, 2026

  Available

• FAA Service Difficulty Reports →

  Refreshed May 5, 2026

  Unavailable

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