# N515CS: 1999 Learjet 31A - Status: Valid registration - Airframe: [Learjet 31A](https://openairdocs.org/model/learjet-31a) (registry code 5170531, 10 seats) - Engine: [Alliedsign TFE-731-2B](https://openairdocs.org/engine/alliedsign-tfe-731-2b) (registry code 02502) - Data sheets: [TCDS A10CE](https://openairdocs.org/tcds/A10CE) (Learjet Inc.), [TCDS E6WE](https://openairdocs.org/tcds/E6WE) (Honeywell Aerospace US LLC) (OpenAirDocs) - Serial number: 185 - Year built: 1999 - Type: Fixed wing multi engine - Engine type: Turbo-fan - Airworthiness: Standard, transport - Airworthiness date: December 6, 2000 - Certificate issued: September 14, 2026 - Expires: September 30, 2033 - Mode S code: A67445 - Registered owner: [Casavia Corp](https://openairdocs.org/faa-owner/CASAVIA%20CORP) - Location: [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington) - Owner type: Non-citizen corporation - Owner's area on the map: 39.7376° N, 75.6671° W: Placed by OpenAirDocs at the center of ZIP code 19808, 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=515CS - Page: https://openairdocs.org/aircraft/N515CS From the FAA registry file of October 21, 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): 21 in force ### Matched by airframe (Learjet 31A) - [AD 2018-19-04](https://openairdocs.org/ad/2018-19-04): TE Flap Control System · Learjet 28, 29, 31 and 9 more. Effective Oct 23, 2018 - [AD 2007-17-17](https://openairdocs.org/ad/2007-17-17): Unsealed gaps on the pylon side of the engine firewall · Learjet 31, 31A, 35 and 7 more. Effective Oct 2, 2007 - [AD 2007-04-18](https://openairdocs.org/ad/2007-04-18): Left- and right-hand standby fuel pump switches · Learjet 23, 24, 24A and 25 more. Effective Mar 23, 2007 - [AD 2005-13-36](https://openairdocs.org/ad/2005-13-36): Center ball of the aileron control cable · Learjet 23, 24, 24A and 21 more. Effective Aug 9, 2005 - [AD 2004-03-08](https://openairdocs.org/ad/2004-03-08): Drag Angles of Fuselage and Engine Pylons · Learjet 31, 31A, 35 and 3 more. Effective Mar 15, 2004 - [AD 2001-07-11](https://openairdocs.org/ad/2001-07-11): Main Landing Gear Tires · Learjet 23, 24, 24A and 25 more. Effective May 1, 2001 - [AD 99-23-19](https://openairdocs.org/ad/99-23-19): Spoiler Actuator · Learjet 31, 31A, 35 and 2 more. Effective Dec 21, 1999 - [AD 99-16-03](https://openairdocs.org/ad/99-16-03): Horizontal Stabilizer Anti-Ice System · Learjet 23, 24, 24A and 22 more. Effective Sep 7, 1999 - [AD 99-12-06](https://openairdocs.org/ad/99-12-06): Navigation Receivers · AlliedSignal Navigation Receivers, ATP, F27 Mark 050 and 1 more. Effective Jul 23, 1999 - [AD 98-08-20](https://openairdocs.org/ad/98-08-20): Autopilot Servo Actuators · Alliedsignal Avionics Autopilot Servo Actuators, Mystere-Falcon 20 - C5, Mystere-Falcon 20 - D5 and 17 more. Effective Jun 2, 1998 - [AD 95-20-03](https://openairdocs.org/ad/95-20-03): Airplane Flight Manual (AFM) - Altitude Limitations · Learjet 24, 24A, 24B and 24 more. Effective Nov 2, 1995 - [AD 95-21-03](https://openairdocs.org/ad/95-21-03): Engine Fire Pull Switch Assembly · Learjet 31A and 60. Effective Oct 26, 1995 - [AD 92-19-12](https://openairdocs.org/ad/92-19-12): Oxygen Plumbing & Map Light Wires · Learjet 23, 24, 24A and 22 more. Effective Nov 17, 1992 ### Matched by engine (Alliedsign TFE-731-2B) - [AD 2005-13-07](https://openairdocs.org/ad/2005-13-07): Turbine rotor discs. · Honeywell International TFE731-2, TFE731-2A, TFE731-2B and 12 more. Effective Jul 27, 2005 - [AD 2001-23-09](https://openairdocs.org/ad/2001-23-09): Fan Rotor Discs · Honeywell International TFE731-2, TFE731-2A, TFE731-2B and 14 more. Effective Dec 21, 2001 - [AD 2000-15-09](https://openairdocs.org/ad/2000-15-09): HPC Impeller · Honeywell International TFE731-2, TFE731-2A, TFE731-2B and 20 more. Effective Oct 10, 2000 - [AD 98-17-01 R1](https://openairdocs.org/ad/98-17-01-R1): Flex Fuel Tube · Honeywell International TFE731-2, TFE731-2A, TFE731-2B and 14 more. Effective Nov 29, 1999 - [AD 96-05-03](https://openairdocs.org/ad/96-05-03): Fan rotor disks · Honeywell International TFE731-2, TFE731-2A, TFE731-2B and 13 more. Effective Apr 2, 1996 - [AD 96-04-01](https://openairdocs.org/ad/96-04-01): Fan Rotor Assembly · Honeywell International TFE731-2, TFE731-2A, TFE731-2B and 12 more. Effective Mar 15, 1996 - [AD 82-23-03 R1](https://openairdocs.org/ad/82-23-03-R1): High Pressure Compressor Impellers · Honeywell International TFE731-2, TFE731-2A, TFE731-2B and 12 more. Effective Dec 9, 1983 - [AD 75-07-10](https://openairdocs.org/ad/75-07-10): Transfer Gearbox Vertical Bevel Gear Bearing · Honeywell International TFE731-2, TFE731-2A, TFE731-2B and 12 more. Effective May 1, 1975 ### Historical (superseded or no longer in force) - [AD 98-17-01](https://openairdocs.org/ad/98-17-01) (historical): Honeywell International TFE731-2, TFE731-2A, TFE731-2B and 14 more. Effective Oct 13, 1998 ## Information bulletins (advisory) (4 in force) - [SAIB 2026-07](https://openairdocs.org/saib/2026-07): MAIN LANDING GEAR ATTACH SECTION, Trunnion Pins. Issued Mar 19, 2026 - [SAIB NM-16-24](https://openairdocs.org/saib/NM-16-24): Fuselage: Main Plate/Skin. Issued Sep 15, 2016 - [SAIB NM-13-38](https://openairdocs.org/saib/NM-13-38): Flight Controls Control Column Section. Issued Jun 24, 2013 - [SAIB NM-11-48](https://openairdocs.org/saib/NM-11-48): Ice and Rain Protection: Wing Transverse Duct Assembly. Issued Aug 22, 2011 ## NTSB investigations None matched to N515CS. ## FAA accident and incident reports None matched to N515CS. ## Service difficulty reports (3) As reported by operators and repair stations. - [SDR Z5FA031909N515CS1](https://openairdocs.org/sdr/Z5FA031909N515CS1), Mar 19, 2009: BLEED VALVE. MALFUNCTIONED. AFTER DESCENT TO FL360 AND HOLDING FOR 15 MINUTES, EXPERIENCED CONTINUOUS COMPRESSOR STALLS ON RT ENGINE FOLLOWED BY EEC WARNING LIGHT. FOLLOWING AFM CHECKLIST, - [SDR 081607N515CS1](https://openairdocs.org/sdr/081607N515CS1), Aug 16, 2007: BULB. INOPERATIVE. ON APPROACH, WHEN GEAR WAS EXTENDED, LT MLG DOWN LIGHT FAILED TO ILLUMINATE. CREW FOLLOWED AFM CHECKLIST AND BLEW GEAR DOWN. AIRCRAFT LANDED WITHOUT INCIDENT. O - [SDR 011907N515CS1](https://openairdocs.org/sdr/011907N515CS1), Jan 19, 2007: FUEL CONTROL. FAILED. ON APPROACH TO PSP,WHEN POWER INCREASE SELECTED, RT ENGINE FAILED TO RESPOND AND FLAMED OUT. ATTEMPTED TO RESTART UNSUCCESSFULLY. DECLARED AN EMERGENCY, FOLLOWE ## Related - Other Learjet 31A aircraft: https://openairdocs.org/model/learjet-31a/aircraft.md - STCs for the Learjet 31A: https://openairdocs.org/model/learjet-31a/stcs.md - The Alliedsign TFE-731-2B engine: https://openairdocs.org/engine/alliedsign-tfe-731-2b.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.