# N636QS: 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: 680A0182 - Year built: 2019 - Type: Fixed wing multi engine - Engine type: Turbo-fan - Airworthiness: Standard, transport - Airworthiness date: February 22, 2019 - Certificate issued: April 14, 2026 - Expires: April 30, 2033 - Mode S code: A85575 - Owner type: Co-owned, fractional ownership - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=636QS - Page: https://openairdocs.org/aircraft/N636QS 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 N636QS. ## FAA accident and incident reports None matched to N636QS. ## Service difficulty reports (7) 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 DXTA2026101910213](https://openairdocs.org/sdr/DXTA2026101910213), Oct 16, 2026: LIGHT. INOPERATIVE. SEAT 5 TOE KICK LIGHT NOT WORKING. EXTERIOR EMER LIGHTS CONSIDERED INOP PER MEL GAINED ACCESS TO TOE KICK LIGHT THROUGH THE SEAT ASSEMBLY AND FOUND THE LIGHT ST - [SDR DXTA2026010206355](https://openairdocs.org/sdr/DXTA2026010206355), Dec 29, 2025: CHECK VALVE. FAULTED. AFTER SELECTING GEAR UP ON TAKEOFF, WE RECIEVED A GEAR DISAGREE CAS MESSAGE. THE TWO MAIN GEAR SHOWED UP AND LOCKED HOWEVER THE NOSE GEAR DISPLAYED AN AMBER DN - [SDR DXTA2024112501224](https://openairdocs.org/sdr/DXTA2024112501224), Nov 21, 2024: CONTROL SWITCH. DAMAGED. PARK BRAKE LOW PRESS AMBER CAS: DURING TAXI TO THE RUNWAY, WE RECEIVED A YELLOW PARK BRAKE LOW PRESS CAS MESSAGE. THIS MESSAGE OCCURRED WITH BOTH ENGINES RUNNIN - [SDR DXTA2023122110389](https://openairdocs.org/sdr/DXTA2023122110389), Dec 21, 2023: BATTERY. FAULTED. EMER LIGHTS COMPLETELY DEAD. WE CHARGED THE BATT PACKS FOR 45 MINS ON THE APU AND RETESTED. NOT A SINGLE LIGHT CAME ON IN THE ON POSITION. ACCESSED CLOSEOUT PAN - [SDR DXTA2023092596330](https://openairdocs.org/sdr/DXTA2023092596330), Sep 24, 2023: UNKNOWN. UNKNOWN. AP STAB TRIM INOP AMBER CAS: PRI STAB TRIM FAIL CAS MESSAGE DISPLAYED IN LEVEL FLIGHT. IT WAS FOLLOWED BY AP STAB TRIM INOP AND AP FAIL MESSAGES. COMPLIED WITH - [SDR DXTA2022022156960](https://openairdocs.org/sdr/DXTA2022022156960), Feb 18, 2022: APU. LEAKING. APU SMOKE: AFTER STARTING APU TURNED ON APU BLEED AIR AND THE CABIN FILLED WITH SMOKE. /// CORRECTIVE ACTION /// REMOVED AND REPLACED APU IAW AMM 49-10-00. - [SDR DXTA2021040540390](https://openairdocs.org/sdr/DXTA2021040540390), Apr 3, 2021: BATTERY. DEFECTIVE. COCKPIT EMERG LIGHT: FRONT EMERGENCY LIGHTS REMAINS ON IN THE OFF POSITION , SUSPECT INERTIA SWITCH HAD BEEN TRIGGERED. REPLACED EMERGENCY BATTERY. IAW CE-680A ## Service difficulty reports on N636QS not matched to an aircraft (4) They name N636QS, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft. - [SDR DXT2007F00000](https://openairdocs.org/sdr/DXT2007F00000), May 7, 2007: BOLT. LOOSE. AIRCRAFT CAME INTO THE REPAIR STATION DUE TO THE ENGINE NR1 HIGH TT. DURING BORESCOPE INSPECTION OF THE HP COMPRESSOR AS PART OF THE TROUBLESHOOTING, THE TECHNI - [SDR DXTA200601755](https://openairdocs.org/sdr/DXTA200601755), Nov 26, 2006: SERVO VALVE. INOPERATIVE. ON TAKEOFF ROLL AT ABOUT 70 KTS, THE RT EEC MANUAL LIGHT CAME ON. THE RT N2 WENT TO 102.4 FOR ABOUT 5 SEC. AFTER WE ABORTED, ALSO SAW 3 YELLOW DASH LINES ON THE - [SDR DXTA200601496](https://openairdocs.org/sdr/DXTA200601496), Jul 13, 2006: RELAY. FAILED. ON LANDING LO BRAKE PRESS/ANTI SKID INOP LIGHT CAME ON. BRAKES FAILED AND EMERGENCY BRAKES APPLIED. ALL ECS NORMAL, ACCUMULATOR NORM, FLUID LEVEL NORM. TROUBLES - [SDR DXTA200500826](https://openairdocs.org/sdr/DXTA200500826), Jul 8, 2005: BEARING. WORN. AIRFRAME VIBRATION ABOVE 260 KIA APPEARS TO BE COMING FROM RUDDER. RUDDER PEDALS DANCING BACK AND FORTH. CAN BE FELT IN YOKE AS WELL. VIBRATION GOES AWAY BELOW ## 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.