# N637QS: 2019 Textron 680A - Status: Valid registration - Airframe: [Textron 680A](https://openairdocs.org/model/textron-680a) (registry code 2076814, 10 seats) - Engine: [Pratt & Whitney Canada PW306D1](https://openairdocs.org/engine/pratt-whitney-canada-pw306d1) (registry code 51850) - Data sheets: [TCDS T00012WI](https://openairdocs.org/tcds/T00012WI) (Textron Aviation Inc.), [TCDS E35NE](https://openairdocs.org/tcds/E35NE) (Pratt & Whitney Canada Corp.) (OpenAirDocs) - Serial number: 680A0184 - Year built: 2019 - Type: Fixed wing multi engine - Engine type: Turbo-fan - Airworthiness: Standard, transport - Airworthiness date: March 7, 2019 - Certificate issued: August 28, 2024 - Expires: August 31, 2031 - Mode S code: A8592C - Owner type: Co-owned, fractional ownership - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=637QS - Page: https://openairdocs.org/aircraft/N637QS 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): 3 in force ### Matched by airframe (Textron 680A) - [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 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 2018-07-13](https://openairdocs.org/ad/2018-07-13): Landing Gear · Textron 510, 680 and 680A. Effective May 15, 2018 ### Matched by engine (Pratt & Whitney Canada PW306D1) None in force. ## Information bulletins (advisory) None matched. ## NTSB investigations None matched to N637QS. ## FAA accident and incident reports None matched to N637QS. ## Service difficulty reports (14) 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 DXTA2026101910201](https://openairdocs.org/sdr/DXTA2026101910201), Oct 16, 2026: HANDLE. BINDING. DOOR HANDLE BINDING WHEN OPENING FROM THE INSIDE. CYCLED THE CABIN DOOR HANDLE FROM THE INSIDE WHILE OPENING AND CLOSING THE DOOR MULTIPLE TIMES IAW AMM 52-10-0 - [SDR DXTA2025121906162](https://openairdocs.org/sdr/DXTA2025121906162), Dec 16, 2025: BATTERY. NO TEST. DURING INITIAL AIRCRAFT POWER UP, CABIN EMERGENCY APPEAR WEAK. AFT CABIN EMERGENCY LIGHTS AND EXIT SIGNS SEEM TO BE MOST AFFECTED. PERFORMED QRH CHARGING PROCED - [SDR DXTA2025112105782](https://openairdocs.org/sdr/DXTA2025112105782), Nov 20, 2025: BATTERY. DISCHARGED. WE ENTERED THE PLANE AND WERE TESTING THE EMERGENCY LIGHTS AND FOUND SOME INOP. EMERGENCY LIGHT OVERHEAD SEAT NR 7, FLOOR LIGHTING SEAT NR 8, & EMERGENCY EXIT O - [SDR DXTA2024110401011](https://openairdocs.org/sdr/DXTA2024110401011), Oct 31, 2024: BATTERY PACK. INOPERATIVE. EMERGENCY FLOOR LIGHTING UNDER SEAT NUMBER 3 IS INOPERATIVE! ADDITIONALLY THE LIGHT ABOVE SEAT 3 IS INOPERATIVE AS WELL. BOTH LIGHTS ARE TO BE ON DURING EMER LI - [SDR DXTA2024032511291](https://openairdocs.org/sdr/DXTA2024032511291), Mar 25, 2024: DOOR. MALFUNCTIONED. MAIN DOOR: MAIN CABIN DOOR DOES NOT FREE FALL. DISENGAGED THE CABIN DOOR LIFT MOTOR AND OPERATE DOOR MANUALLY. OPS CHECK GOOD NO ISSUE WITH DOOR OPEN/CLOSE MECH - [SDR DXTA2023012479070](https://openairdocs.org/sdr/DXTA2023012479070), Jan 23, 2023: POWER SUPPLY. INOPERATIVE. AFTER SECURING THE AIRCRAFT, WITH THE EMER LTS SWITCH IN THE OFF POSITION THE MAIN CABIN DOOR EXIT SIGNS REMAIN ILLUMINATED AS WELL AS THE FLOOR LIGHTING UNDER - [SDR 2022F00477](https://openairdocs.org/sdr/2022F00477), Dec 1, 2022: AXLE. CHIPPED. RH INBOARD AND OUTBOARD AXLE PLATING IS CHIPPED. ENGINEERING REPAIR LETTER DQ37358M1 RT MLG AXLE PLATING CHIPPED. - [SDR DXTA2022021456710](https://openairdocs.org/sdr/DXTA2022021456710), Feb 13, 2022: APU. ABNORMAL. APU SMOKE: AFTER SELECTING APU BLEED AIR TO ON THE CABIN AND COCKPIT FILLED WITH SMOKE //SIGNOFF// REMOVED APU PN# 3800785-1 SN# P-883 AND REPLACED WITH REPAIRE - [SDR 2022F00010](https://openairdocs.org/sdr/2022F00010), Dec 2, 2021: THRESHOLD. CRACKED. CRACK FUSELAGE THRESHOLD, FS 206.13 AND LBL 19.7 REPORT NO.FR-680A-0184-9951 REV - DATED 11/23/2021 - [SDR 2021FA0000313](https://openairdocs.org/sdr/2021FA0000313), Nov 4, 2021: NONE. NONE. REPAIR 680A ALL S/N LWR SKIN CHAFE FROM ANTI-ICE VALVE REF SR-680A-ATA53-22175 DATED 07/19/2019 - [SDR DXTA0310202139050](https://openairdocs.org/sdr/DXTA0310202139050), Mar 6, 2021: GARLOCK SEAL. LEAKING. WITH APU RUNNING AND BLEED AIR ON, ACFT FILLED WITH SMOKE. LOOKED LIKE IT WAS COMING OUT OF ALL THE GASPERS. HEAVY SMOKE ON BOARD. *** CORRECTIVE ACTION *** CON - [SDR DXTA021920213797](https://openairdocs.org/sdr/DXTA021920213797), Feb 16, 2021: BATTERY. DEFECTIVE. EMERGENCY LIGHTING: WHEN DOING THE EMER LIGHT TEST BATT OFF EMERGENCY LIGHT SELECTED TO ARM NONE OF THE LIGHTS WILL COME ON. AND THEN EMER LIGHTS ON BATT OFF AL - [SDR DXTA202102164756](https://openairdocs.org/sdr/DXTA202102164756), Feb 16, 2021: LIGHT. INOPERATIVE. EMERGENCY LIGHTING: WHEN DOING THE EMER LIGHT TEST BATT OFF EMER LIGHT SELECTED TO ARM NON OF THE LIGHTS WILL COME ON. AND THEEEEEN EMER LIGHTS ON BATT OFF ALL - [SDR DXTA2021011904620](https://openairdocs.org/sdr/DXTA2021011904620), Jan 18, 2021: HINGE. DEFECTIVE. AFT HINGE BROKEN ON MAIN CABIN DOOR, SEE PICTURE. REMOVED AND REPLACED BROKEN DOOR HINGE FROM THE AFT POSITION, IAW CE 680A AMM 52-10-50. OPERATIONS CHECK GOOD. ## Service difficulty reports on N637QS not matched to an aircraft (6) They name N637QS, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft. - [SDR DXTA200702690](https://openairdocs.org/sdr/DXTA200702690), Dec 18, 2007: PITOT TUBE. CONTAMINATED. ABORTED TAKEOFF DUE TO NO AIRSPEED INDICATION ON PILOTS SIDE. DRAINED MOISTURE FROM LT PITOT TUBE. PERFORMED PURGE TO PILOTS SYSTEM. TESTED LT PITOT SYSTEM. OPE - [SDR DXTA200702085](https://openairdocs.org/sdr/DXTA200702085), Apr 5, 2007: BRAKE ASSY. MALFUNCTIONED. IMMEDIATELY UPON, LANDING, PWR BRAKE AND ANTISKID ANNUNCIATOR CAME ON WITH MASTER, CAUTION, STILL HAD PRESSURE UPON EXITING RUNAWAY PWR BRAKE CIRCUIT BREAKER, P - [SDR CWQR2006014](https://openairdocs.org/sdr/CWQR2006014), Jul 12, 2006: CABLE ASSY. FRAYED. REQUESTED CABLE INSPECTION OF AFT ELEVATOR TRIM CABLE, BECAUSE AC IN THE FLEET OF THIS SN BLOCK AND TIME SHOWED SIGNS OF FRAYING. DURING INSPECTION FOUND THE CA - [SDR DXTA200500938](https://openairdocs.org/sdr/DXTA200500938), Aug 30, 2005: BRAKE. MALFUNCTIONED. ON LANDING ROLL AND DURING TAXI THE BRAKES ARE VERY TOUCHY AND APPLY AT DIFFERENT RATES. NOT POSSIBLE TO TAXI WITHOUT CONSTANT PULLING LEFT AND RIGHT. PERFORMED - [SDR DXTA200300191](https://openairdocs.org/sdr/DXTA200300191), Nov 26, 2003: CONTROL CABLE. BROKEN. PERFORMED AILERON WING CABLE INSPECTION PER CESSNA ASL560XL-27-12, FOUND CABLES CHAFED/BROKEN BEYOND MANUFACTURER'S LIMITS. REMOVED AND REPLACED LEFT AND RIGHT - [SDR 2003FA0000816](https://openairdocs.org/sdr/2003FA0000816), Aug 8, 2003: LINE. CHAFED. LT FLAP RETRACTION HYDRAULIC LINE, RT AND LT EMERGENCY BRAKE PNEUMATIC LINES CHAFING ON PILLOW BLOCK CLAMPS. ## STCs that may be installed (OpenAirDocs) (16) 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 (Textron 680A) - [STC ST04765NY](https://openairdocs.org/stc/ST04765NY): Unprepared (Grass/Sod) Runway Operations. Textron Aviation Inc - [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 ST12344IB](https://openairdocs.org/stc/ST12344IB): Replacement of the Halon Type 1211 portable fire extinguisher with Halotron BrX portable fire extinguisher with Halotron BrX portable fire extinguisher. Cessna Duesseldorf Citation Service Center GmbH - [STC ST122244IB](https://openairdocs.org/stc/ST122244IB): Installation of Gogo Galileo system, including HDX Antenna. Alamo Engineering GmbH - [STC ST03885AT](https://openairdocs.org/stc/ST03885AT): Installation of an Avionica, Inc. avCM Cellular Module. Aircraft Systems and Manufacturing Inc - [STC ST11983SE](https://openairdocs.org/stc/ST11983SE): Installation of Starlink Aviation System. AeroMech Incorporated - [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 ST01117DE](https://openairdocs.org/stc/ST01117DE): Installation of the Gogo ATG C1. Peregrine - [STC ST02037WI](https://openairdocs.org/stc/ST02037WI): Installation of Gogo Business Aviation AVANCE L5 System with MB 13 Antennas. Duncan Aviation Inc - [STC ST04736NY](https://openairdocs.org/stc/ST04736NY): True Blue TS28 Emergency Battery Power Supply Replacement. Aerospace Design and Compliance LLC - [STC ST01936WI](https://openairdocs.org/stc/ST01936WI): Installation of LED lights. AeroLED's Holdings LLC - [STC ST04575AT](https://openairdocs.org/stc/ST04575AT): Installation of the Rockwell Collins ALT-1000+/ -4000+ with 5G Filtering. Chippewa Aerospace Inc - [STC ST04367CH](https://openairdocs.org/stc/ST04367CH): Installation of a Medical Interior in accordance with LifePort Master Data List EGR-887-000-001, Revision (B), dated April 18, 2019 or later FAA approved revision and LifePort Master Drawing List MDL-887-00, Revision (D), dated April 11, 2019 or later FAA approved revision.". LifePort LLC - [STC ST01027DE](https://openairdocs.org/stc/ST01027DE): Installation of MarathonNorco Aerospace Inc Nickel Cadmium battery in place of existing Nickel Cadmium main aircraft battery/batteries. MarathonNorco Aerospace Inc - [STC ST11071SC](https://openairdocs.org/stc/ST11071SC): Demonstration of aircraft critical equipment and antenna systems tolerance of radio frequency interference (RFI) from intentional or spurious transmissions from certain Portable Electronic Devices (PEDs). Liberty Partners Inc - [STC ST11168SC](https://openairdocs.org/stc/ST11168SC): Installation of a Pratt & Whitney Flight Data Acquisition, Storage, and Transmission System (FAST). Pratt & Whitney Engine Services Inc ## Related - Other Textron 680A aircraft: https://openairdocs.org/model/textron-680a/aircraft.md - The Pratt & Whitney Canada PW306D1 engine: https://openairdocs.org/engine/pratt-whitney-canada-pw306d1.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.