# N640QS: 2020 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: 680A0242 - Year built: 2020 - Type: Fixed wing multi engine - Engine type: Turbo-fan - Airworthiness: Standard, transport - Airworthiness date: May 18, 2020 - Certificate issued: September 24, 2026 - Expires: September 30, 2033 - Mode S code: A866AA - Owner type: Co-owned, fractional ownership - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=640QS - Page: https://openairdocs.org/aircraft/N640QS 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 N640QS. ## FAA accident and incident reports None matched to N640QS. ## Service difficulty reports (15) 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 DXTA2026090809572](https://openairdocs.org/sdr/DXTA2026090809572), Sep 5, 2026: GENERATOR. FAILED. SHORT FINAL, STARTED APU FOR GROUND COOLING PAX COMFORT. AS SOON AS WE STARTED THE APU WE GOT WINDSHIELD HEAT INOP L AND DC GEN OFF L CAS MESSAGES DISPLAYED. CO - [SDR DXTA2026062608559](https://openairdocs.org/sdr/DXTA2026062608559), Jun 23, 2026: DOOR. OUT OF ADJUST. THE MAIN CABIN DOOR HANDLE REQUIRES EXCESS FORCE TO PLACE IN THE LOCKED POSITION. DOOR LOCKS AS NORMAL AFTER THAT. ARRIVED TO ACFT & PREPPED FOR MAINTENANCE. WH - [SDR DXTA2025121506103](https://openairdocs.org/sdr/DXTA2025121506103), Dec 12, 2025: AIR FILTER. DIRTY. AFTER TAKEOFF WITHIN A FEW MINUTES DURING THE CLIMB OUT, WE NOTICED A VERY STRONG, ACRID SMELL IN THE COCKPIT WHICH LASTED THROUGHOUT THE FLIGHT. NO SMELLS WERE - [SDR DXTA2025121206085](https://openairdocs.org/sdr/DXTA2025121206085), Dec 11, 2025: LIGHT. MALFUNCTIONED. SEAT NINE FLOOR EMERGENCY LIGHT INOPERATIVE. NO FAULT FOUND. OPS CHECK GOOD. IAW AMM 35-50-00. - [SDR DXTA2025091504936](https://openairdocs.org/sdr/DXTA2025091504936), Sep 11, 2025: FUSE. FAILED. LEFT EXTERIOR EMERGENCY LIGHT INOP REPLACE FUSE . SUPPLIED BY NET JETS. ALL WORK DONE IN ACCORDANCE WITH CE-680A SPM 20-30-00. PERFORMED OPERATIONAL TEST OF EME - [SDR DXTA2025073004395](https://openairdocs.org/sdr/DXTA2025073004395), Jul 28, 2025: DOOR SEAL. LEAKING. DURING CLIMBOUT PRESSURIZATION, THERE IS A NOTICABLE MAIN DOOR SQUEAL LEADING TO A THUNK NEAR 12000 FEET. DURING DESCENT AND DEPRESSURIZATION THERE IS A THUNK A - [SDR DXTA2025052703628](https://openairdocs.org/sdr/DXTA2025052703628), May 24, 2025: PROXIMITY SWITCH. DEFECTIVE. CABIN DOOR OPEN AMBER CAS: AMBER CABIN DOOR OPEN MSG ILLUMINATED ON GROUND, RAN QRH PROCEDURE. MSG DID NOT CLEAR. CORRECTIVE ACTION: REPLACED PROXIMITY SWITCH R - [SDR DXTA2025031702695](https://openairdocs.org/sdr/DXTA2025031702695), Mar 15, 2025: STRUCTURE. NO DISCREPANCY. SEVERE TURBULENCE: ON APPROACH INTO KGPT AT 2000 FEET. ENCOUNTERED MODERATE TO SEVERE TURBULENCE. AIRSPEED WAS INITIALLY AT 220 SLOWED TO 200 WHEN TURBULENCE GO - [SDR DXTA2025021302351](https://openairdocs.org/sdr/DXTA2025021302351), Feb 12, 2025: G SWITCH. TRIPPED. EMERG EXIT SIGN/LIGHT: THE EMERGENCY EXIT SIGN LIGHT OVER PASSENGER ENTERY DOOR REMAINS ON EVEN AFTER TURNING THEM OFF. PER MAINTENCE, I RESET THE G SWITCH YEST - [SDR DXTA2023081893420](https://openairdocs.org/sdr/DXTA2023081893420), Aug 17, 2023: CONTROL MODULE. INOPERATIVE. LANDING GEAR HANDLE: REPEAT WRITE-UP VERY DIFFICULT TO RETRACT LANDING GEAR. REMOVED AND INSTALLED LANDING GEAR CONTROL MODULE DUE TO DIFFICULT OPERATION. C/W O - [SDR DXTA2023070590340](https://openairdocs.org/sdr/DXTA2023070590340), Jul 4, 2023: UNKNOWN. UNKNOWN. EMERGENCY LIGHTS REMAIN ILLUMINATED AFTER ACFT SHUTDOWN. RESET CONSOLE 5G SWITCH DID NOT WORK. ARRIVED AT ACFT NOTING NO EMERGENCY TIGHTS ILLUMINATED WITH POWER - [SDR DXTA2023030681910](https://openairdocs.org/sdr/DXTA2023030681910), Mar 3, 2023: NONE. NONE. MAIN DOOR HANDLE: MAIN CABIN DOOR HANDLE MUST BE FORCEFULLY PUSHED DOWN IN ORDER TO CLOSE DOOR FULLY AND EXTINGUISH CABIN DOOR OPEN CAS MESSAGE. *** CORRECTIVE - [SDR DXTA2022061964230](https://openairdocs.org/sdr/DXTA2022061964230), Jun 19, 2022: HANDLE. DEFECTIVE. GEAR DISAGREE L AMBER CAS: LEFT, RIGHT, AND NOSE DISAGREE MESSAGE CAME ON AFTER TAKEOFF DURING GEAR RETRACTION. LANDING GEAR INDICATIONS ON EICAS WERE ALL AMBER - [SDR DXTA2020063013793](https://openairdocs.org/sdr/DXTA2020063013793), Jun 21, 2020: UNKNOWN. ODOR. DURING TAXI AFTER FLIGHT, APU WAS STARTED, AND AND ONCE THE APU BLEED WAS SELECTED ON, NOTICED SMOKE FILLING THE COCKPIT AND CABIN. APU BLEED SELECTED OFF AND A - [SDR DXTA2020062203793](https://openairdocs.org/sdr/DXTA2020062203793), Jun 21, 2020: UNKNOWN. SMOKE. DURING TAXI AFTER FLIGHT, APU WAS STARTED, AND AND ONCE THE APU BLEED WAS SELECTED ON WE NOTICED SMOKE FILLING THE COCKPIT AND CABIN. APU BLEED SELECTED OFF AND ## Service difficulty reports on N640QS not matched to an aircraft (22) They name N640QS, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft. - [SDR DXTR2017082901](https://openairdocs.org/sdr/DXTR2017082901), Aug 29, 2017: SPAR CAP. CORRODED. CORROSION ON THE RT AFT LOWER SPAR CAP INSIDE WHEEL WELL BOX, REPAIRED. - [SDR DXTA2017041606398](https://openairdocs.org/sdr/DXTA2017041606398), Apr 16, 2017: WARNING MESSAGE. ILLUMINATED. GROUND IDLE ANNUNCIATOR ILLUMINATED FOLLOWED BY MASTER CAUTION AFTER TAKEOFF. EXTINGUISHED AFTER GEAR RETRACTION. - [SDR EBVR20161101002](https://openairdocs.org/sdr/EBVR20161101002), Nov 1, 2016: SKIN. CHAFED. LARGE CHAFE AND GOUGES IN THE MAIN ENTRY DOOR SKIN AT THE FWD COUNTERBALANCE REEL LOCATION. COMPLIED WITH ERO-868632 IR. INSTALLING A REPAIR DOUBLER AT THE DAMA - [SDR EBVR20161101001](https://openairdocs.org/sdr/EBVR20161101001), Nov 1, 2016: SKIN. DEBONDED. RIGHT INBD FLAP LOWER SURFACE HAS AN AREA OF DE LAMINATION CAUSED BY IMPACT DAMAGE LOCATED DIRECTLY BEHIND THE MAIN TIRE. COMPLIED WITH ERO-868488 REV IR. - [SDR DXTR2016012002](https://openairdocs.org/sdr/DXTR2016012002), Jan 14, 2016: CABLE. FRAYED. TOP ELEVATOR TRIM FORWARD CABLE UNDER CENTER PEDESTAL IS FRAYED. R & R FWD ELEVATOR TRIM CABLES IAW MM 27-32-02. CABLE ASSEMBLY CONSISTS OF CABLE, PN: 6660002-3 - [SDR DXTA2015122306143](https://openairdocs.org/sdr/DXTA2015122306143), Dec 23, 2015: RHEOSTAT. FAILED. IN FLIGHT CREW NOTICED RT SIDE MAP LIGHT WOULD NOT EXTINGUISH. ON APPROACH TO DESTINATION CREW SMELLED AN ELEC SMOKE ODOR. CB RT PANEL, LT SIDE LIGHTS, POPPED & - [SDR DXTR2015042302](https://openairdocs.org/sdr/DXTR2015042302), Apr 16, 2015: FLEX HOSE. DAMAGED. COPILOTS LT BRAKE MASTER CYLINDER HOSE DAMAGED FROM RUDDER TORQUE TUBE BRIDGE CONTACT. INSTALLED NEW BRAKE LINE IAW MM 32-42-02. - [SDR DXTR2015042301](https://openairdocs.org/sdr/DXTR2015042301), Apr 16, 2015: LINE. CHAFED. LEFT BRAKE LINE IN COCKPIT ON FWD PRESSURE BULKHEAD FWD OF COPILOT'S RT RUDDER PEDAL CHAFED. INSTALLED NEW BRAKE LINE, PN 6617118-1 AT ORIGINAL LOCATION IN CONJ - [SDR DXTR2015041402](https://openairdocs.org/sdr/DXTR2015041402), Apr 10, 2015: SPAR WEB. CHAFED. LIGHT CHAFING FOUND ON FWD SIDE OF VERTICAL STAB SPAR UNDER PIVOT FITTING CLIP. REPAIRED IAW REPAIR DEFINITION S-560XL-5240/05RD AND SRM 51-70-08. - [SDR DXTR2015042304](https://openairdocs.org/sdr/DXTR2015042304), Mar 28, 2015: STRINGER CLIP. CRACKED. VERTICAL SPAR PIVOT FITTING LOWER LT SIDE BOTTOM STRINGER CLIP CRACKED. R & R VERTICAL STABILIZER PIVOT CLIP IAW SRM 55-30-01. - [SDR DXTR2015041401](https://openairdocs.org/sdr/DXTR2015041401), Mar 28, 2015: PIVOT. CRACKED. VERTICAL SPAR PIVOT FITTING LOWER LT SIDE BOTTOM STRINGER CLIP CRACKED. R & R VERTICAL STABILIZER PIVOT CLIP REF SRM 55-30-01 AND REPAIR DEFINITION S-560XL-5240 - [SDR DXTA2010030304010](https://openairdocs.org/sdr/DXTA2010030304010), Mar 2, 2010: WIRE HARNESS. FAULTED. RT THRUST REVERSER UNLOCK LIGHT ILLUMINATED ON THE DESCENT TO DESTINATION. PERFORMED APPROPRIATE EMERGENCY/ABNORMAL PROCEDURES CHECKLIST. AFTER RUNNING THE CHEC - [SDR DXTA2008120703392](https://openairdocs.org/sdr/DXTA2008120703392), Dec 7, 2008: SEAL. LEAKING. FOUL ODOR COMMING OUT OF ENVIROMENTAL SYS. REMOVED APU IAW MM 49-10-00. BUILT UP NEW APU IAW MM 49-10-00. OK TO INSTALL REPAIRED APU. INSTALLED APU AND APU STAR - [SDR DXTA2008120803392](https://openairdocs.org/sdr/DXTA2008120803392), Dec 7, 2008: APU. SMOKE. FOUL ODOR COMING OUT OF ENVIRONMENTAL SYSTEM. ITS A MUSTY ODOR AND ITS MOST NOTICEABLE AT A RELATIVELY WARM OUTSIDE TEMP WITH CABIN SET TO COOL. WITH THE APU BL - [SDR 2008FA0000385](https://openairdocs.org/sdr/2008FA0000385), Jun 5, 2008: TRUNNION. CORRODED. (REF CWQR200806) WHILE WORKING AN UNSCHEDULED NOSE GEAR VIBRATION, POPPING, DISCREPANCY. FOUND BEARING PN MS2464268G TO BE ROUGH WHEN TURNING. UPON FURTHER INSP - [SDR DXTA200803052](https://openairdocs.org/sdr/DXTA200803052), May 10, 2008: ACTUATOR. FALSE INDICATION. LANDING GEAR GREEN (NO) NOSE LIGHT REMAINED ILLUMINATED AFTER LANDING GEAR RETRACTION. REPLACED NOSE GEAR ACTUATOR WITH NEW IAW MM 32-30-03. OPERATION & LEAK CH - [SDR DXTA200702653](https://openairdocs.org/sdr/DXTA200702653), Dec 5, 2007: ACM. ODOR. WHAT SEEMED TO BE AN ELECTRICAL BURNING ODOR DEVELOPED IN THE COCKPIT DURING LEVEL FLIGHT WITH THE ANTIICE SYSTEM (ON) LASTING APPROXIMATELY 2 MINUTES. FOUND BA - [SDR DXTA200702488](https://openairdocs.org/sdr/DXTA200702488), Sep 20, 2007: SWITCH. MALFUNCTIONED. STAB MISCOMPARE CAME ON AFTER LANDING, DIVERTED. 09-28-07 REMOVED & REPLACED FAULTY SWITCH IAW C560XL MM 27-40-00. OPS CHECK GOOD. - [SDR DXTA200702293](https://openairdocs.org/sdr/DXTA200702293), Jun 24, 2007: ENGINE. UNKNOWN. UPON ADDING TAKEOFF POWER, CREW HEARD VERY LOUD EXPLOSIVE SOUND. CREW ABORTED TAKEOFF AND AS WE TAXIIED OFF OF RUNWAY, CREW HEARD EXTREMELLY LOUD FLUTTER BANGS - [SDR DXTA200601819](https://openairdocs.org/sdr/DXTA200601819), Dec 26, 2006: WINDSHIELD. FAILED. ENROUTE AT FL 390, WE RECEIVED A R WINDSHIELD FAULT LIGHT. OUTER WINDSCREEN ON THE FO SIDE OF PLANE THEN COMPLETELY SHATTERED. DID AN ENERGENCY DECENT & PASSING - [SDR CWQR200621](https://openairdocs.org/sdr/CWQR200621), Aug 21, 2006: CONTROL CABLE. FRAYED. DURING A PHASE B-INSPECTION, OPERATOR REQUESTED WE INSPECT THE AFT ELEVATOR TRIM CABLES. UPON INSPECTION WE FOUND BROKEN WIRES, TOOK CABLE TENSIONS, FOUND TO BE - [SDR DXTA200400228](https://openairdocs.org/sdr/DXTA200400228), Jan 24, 2004: OIL FILTER. CLOGGED. DURING TAKEOFF ROLL FOR THE FIRST FLIGHT OF THE DAY, WHILE APPROACHING 40 KNOTS THE RIGHT ENGINE OIL PRESSURE BYPASS ANNUNCIATOR AND MASTER CAUTION ILLUMINATED, ## 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.