# N939QS: 2023 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: 680A0372
- Year built: 2023
- Type: Fixed wing multi engine
- Engine type: Turbo-fan
- Airworthiness: Standard, transport
- Airworthiness date: December 12, 2023
- Certificate issued: September 18, 2026
- Expires: September 30, 2033
- Mode S code: AD0887
- Owner type: Co-owned, fractional ownership
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=939QS
- Page: https://openairdocs.org/aircraft/N939QS

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 N939QS.

## FAA accident and incident reports

None matched to N939QS.

## Service difficulty reports (5)

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 DXTA2026030607124](https://openairdocs.org/sdr/DXTA2026030607124), Mar 4, 2026: RECEPTACLE. OUT OF RIG. DOOR ALL DAY HAS BEEN HARD TO CLOSE. UPON ARRIVAL INTO STL, WHEN SECURING AIRCRAFT, WE WERE UNABLE TO CLOSE THE DOOR AS THE LOCKING PINS WILL NOT ENGAGE AND THE
- [SDR DXTA2026022306997](https://openairdocs.org/sdr/DXTA2026022306997), Feb 22, 2026: HINGE. OUT OF ADJUST. MAIN CABIN DOOR DIFFICULT TO CLOSE. DOOR HANDLE BINDS WHEN ATTEMPTING TO PULL DOWN TO CLOSE. NO DIFFICULTY IN OPENING CORRECTIVE ACTION: ADJUSTED FORWARD HINGE 
- [SDR DXTA2025111305663](https://openairdocs.org/sdr/DXTA2025111305663), Nov 11, 2025: WIRE HARNESS. DAMAGED. ABIN DOOR OPEN CAS AT FL260. ONCE CAS ILLUMINATED WE HEARD THE DOOR OPEN INDICATOR UNLOCK. CONDUCTED QRH AND LANDED WITHOUT INCIDENT. REMOVED CABIN DOOR THRESHO
- [SDR DXTA2025100605192](https://openairdocs.org/sdr/DXTA2025100605192), Oct 3, 2025: BATTERY PACK. NO TEST. WHEN MOVING THE EMERGENCY LIGHT SWITCH TO ON NO EMERGENCY LIGHTS COME ON. WHEN SETTING THE SWITCH TO ARM ALL LIGHTS COME ON EXCEPT THE AFT BULKHEAD EXIT SIGN AN
- [SDR DXTA2025090804846](https://openairdocs.org/sdr/DXTA2025090804846), Sep 5, 2025: POWER SUPPLY. DEFECTIVE. DURING PREFLIGHT WHILE CHECKING THE EMERGENCY BATTERY, WE DISCOVERED THE EMERGENCY AISLE LIGHT UNDER SEAT 3 AND THE RIGHT WING INSPECTION LIGHT DO NOT WORK ON T

## Service difficulty reports on N939QS not matched to an aircraft (32)

They name N939QS, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft.

- [SDR 2019FA0000361](https://openairdocs.org/sdr/2019FA0000361), Nov 8, 2019: SKIN. CORRODED. LH AND RH WING PANELS EDDY CURRENT INDICATIONS OF CORROSION ON THE UPPER SURFACE. ACCOMPLISHED FLAP PEEN REPAIR IAW TEXTRON AVIATION ENGINEERING REPAIR MEMO DQ1
- [SDR DXTA2018041900161](https://openairdocs.org/sdr/DXTA2018041900161), Apr 19, 2018: SKIN. DAMAGED. RT WING TIP SKIN DAMAGED. REPAIRED IAW MEMO DQ11936M1.
- [SDR DXTA2015092906093](https://openairdocs.org/sdr/DXTA2015092906093), Sep 28, 2015: COFFEEMAKER. ODOR. DURING GROUND OPS, PLASTIC BURNING ODOR OBSERVED IN CABIN. APPEARS TO BE CONCENTRATED IN THE AREA OF THE OVERHEAD LIGHTING VALANCE, DIRECTLY ABOVE THE GALLEY WO
- [SDR DXTA2015021805982](https://openairdocs.org/sdr/DXTA2015021805982), Feb 17, 2015: ENGINE. LEAKING. ON BREAKING GROUND, PRIOR TO GEAR RETRACTION, FIRST OFFICER CALLED SMOKE IN COCKPIT, SMELLED ELECTRICAL. TURNED PAC'S OFF CHANGED NOTHING. APPEARED TO BE COMING
- [SDR DXTA2015012005963](https://openairdocs.org/sdr/DXTA2015012005963), Jan 19, 2015: COALESCER BAG. ODOR. IMMEDIATELY AFTER TAKEOFF, THE COCKPIT BEGAN TO FILL WITH SMOKE. AFTER TURNING COCKPIT PACK OFF, SMOKE SEEMED TO DISSIPATE. COMPLIED WITH A LIMITED BORESCOPE IN
- [SDR DXTA2014121505948](https://openairdocs.org/sdr/DXTA2014121505948), Dec 14, 2014: APU. FAILED. ODOR OF BURNING OIL IN COCKPIT ONLY. RAN APU, VERIFIED CREW DISCREPANCY. STRONG OIL ODOR FROM COCKPIT. RAN LT AND RT ENGINES. APU AIR HAS A NOTICEABLELY STRONG 
- [SDR DXTA2014120805942](https://openairdocs.org/sdr/DXTA2014120805942), Dec 6, 2014: A/C PACK. ODOR. THE AIR CONDITIONING PRESSURIZATION SYS IS EMITTING A STRONG, RANCID, CHEESE LIKE ODOR INTO THE CABIN. REMOVED THE COALESOR SOCKS FROM PACKS & CLEANED THE PACKS
- [SDR DXTA2014072905837](https://openairdocs.org/sdr/DXTA2014072905837), Jul 28, 2014: ACM. ODOR. STRONG SMOKEY ODOR IN CABIN WHEN AIR IS TURNED ON. REMOVED AND REPLACED FWD ACM. OPS & LEAK CHECKED GOOD.
- [SDR DXTA2014051405772](https://openairdocs.org/sdr/DXTA2014051405772), Apr 25, 2014: SKIN. CORRODED. REPAIR OF LT & RT LWR WING SKIN CORROSION. REPAIRED IAW CESSNA S-750-0193 13RD.
- [SDR DXTA2014050205758](https://openairdocs.org/sdr/DXTA2014050205758), Apr 11, 2014: STRUCTURE. GOUGED. GOUGED NLG ACTUATOR TUNNEL. REPAIRED IAW S-750-0193 11RD.
- [SDR DXTA2014022405665](https://openairdocs.org/sdr/DXTA2014022405665), Feb 22, 2014: POWER SUPPLY. DEFECTIVE. STRONG ODOR ORIGINATING IN CABIN NEAR SEATS 5 & 6. ODOR SMELLS LIKE CHEMICALS OR HYDROCARBONS. REMOVED LT & RT PSU'S & INSPECTED ALL LIGHTS, POWER SUPPLIES & EL
- [SDR DXTA2013120205588](https://openairdocs.org/sdr/DXTA2013120205588), Dec 2, 2013: LIGHT. CONTAMINATED. THE ODOR OF HOT PLASTIC OR HOT VINYL WAS NOTICED BY 4 CREW MEMBERS. THE ODOR IS MUCH STRONGER TOWARDS THE CEILING OF THE CABIN. THE STRONGEST ODOR COMING FROM T
- [SDR DXTA201307115442](https://openairdocs.org/sdr/DXTA201307115442), Jul 10, 2013: UNKNOWN. UNKNOWN. AFTER TAKEOFF, INTERMITTENT NOSE GEAR THUMPING SOUND FROM THE NOSE GEAR WAS NOTICED. UNLOCK LIGHT BLINKING. AT A LESSER FREQUENCY HAPPENED SEVERAL TIMES DURING 
- [SDR DXTA2012082305103](https://openairdocs.org/sdr/DXTA2012082305103), Aug 22, 2012: SQUAT SWITCH. OUT OF ADJUST. AFTER TAKEOFF, GEAR HANDLE SELECTED UP RED UNLOCK LIGHT ILLUMINATED, NOSE DOWN AND LOCKED LIGHT REMAINED ILLUMINATED, LT AND RT MAIN GEAR DOWN AND LOCKED LIGHTS
- [SDR DXTA2012081605097](https://openairdocs.org/sdr/DXTA2012081605097), Aug 15, 2012: PCB. MALFUNCTIONED. GEAR FAILED TO RETRACT. UNLOCK LIGHT REMAINED ON. EXTENDED GEAR IAW CHECKLIST NORMALLY. LANDING UNEVENTFUL. JACKED AND PERFORMED SEVERAL GEAR SWINGS WHILE MONIT
- [SDR DXTA2012010504840](https://openairdocs.org/sdr/DXTA2012010504840), Jan 4, 2012: FLOAT VALVE. MALFUNCTIONED. LEFT AND RIGHT WING TANKS DUMPING FUEL "WING TANK O'FULL LT & RT AMBER CAS MESSAGE. OBSERVED FUEL COMING OUT OF WING. FOLLOWED CHECKLIST AND TURNED TRANSFER PUM
- [SDR DXTA2011120604815](https://openairdocs.org/sdr/DXTA2011120604815), Dec 5, 2011: PDU. MALFUNCTIONED. FLAPS FAIL AMBER EICAS MESSAGE CAME ON WHEN FLAPS SELECTED UP AFTER TAKE OFF. FLAPS VISUALLY APPEARED UP. CHECKLIST ITEMS COMPLETED. NO CHANGE. PERFORMED A STUC
- [SDR DXTA2011042604562](https://openairdocs.org/sdr/DXTA2011042604562), Apr 26, 2011: FUEL CELL. LEAKING. WING TANK OVERFILL LT CAS MESSAGE. FUEL VENTED FROM LT WING TANK AT CRUISE FL 270 & NO TURBULENCE FOR APPROX 15 MINUTES. NORMAL CLIMB IN LIGHT TURBULENCE. YAWED
- [SDR DXTA2009092803801](https://openairdocs.org/sdr/DXTA2009092803801), Sep 27, 2009: TRANSFER VALVE. INOPERATIVE. AMBER CAS MESSAGE "WING OVERFILL-L" KEPT ILLUMINATING (3 TIMES). WITH ILLUMINATION LEFT WING VENTED FUEL. TROUBLE SHOOT TO BAD INBOARD AND OUTBOARD LEFT WING FU
- [SDR DXTA200802808](https://openairdocs.org/sdr/DXTA200802808), Jan 29, 2008: SQUAT SWITCH. INOPERATIVE. AFTER TAKEOFF, GEAR WOULD NOT RETRACT. REMOVED AND REPLACED NLG SQUAT SWITCH WITH A NEW UNIT ALL WORK PERFORMED IAW MM CH 32-60-00. ALSO REPACKED NLG WHEEL BEAR
- [SDR DXTA200802754](https://openairdocs.org/sdr/DXTA200802754), Jan 8, 2008: ACTUATOR. FAILED. AMBER CAS MESSAGE (PITCH FEEL FAIL) ILLUMINATES IF SPEED EXCEEDS 250K. TROUBLE SHOT DISCREPANCY TO FAILED RT PITCH FEEL ACTUATOR. REMOVED & REPLACED RT PITCH FE
- [SDR DXTA200702269](https://openairdocs.org/sdr/DXTA200702269), Jun 16, 2007: UNKNOWN. VIBRATION. ABORTED TAKEOFF, DUE TO VERY BAD NOSE WHEEL VIRBRATION. KNOCKED OFF YAW DAMP AND FGC. [07-09-07] REMOVED AND REPLACED BOTH NOSE WHEEL ASSY'S DUE TO VIBRATION CH
- [SDR DXTA200702151](https://openairdocs.org/sdr/DXTA200702151), Apr 27, 2007: YAW DAMPER. MALFUNCTIONED. EICAS MESSAGES, YAW DAMPER OFF LOWER, YAW DAMPER NOT CENTERED. (MACH TRIM OFF) ILLUMINATED DURING THE TAKEOFF ROLL AFTER 40 KTS. [SUP 05-03-07] PERFORMED PITOT/
- [SDR DXTA200601647](https://openairdocs.org/sdr/DXTA200601647), Oct 11, 2006: HINGE. BENT. GEAR "UNLOCK" LIGHT ON AFTER GEAR RETRACTION ON T/O. VISUALLY INSPECTED LANDING GEAR. FOUND RED PAINT STREAK ON L/R NLG DOOR + LARGE PAINT CHIP ALONG STREAK. IT
- [SDR DXTA200601451](https://openairdocs.org/sdr/DXTA200601451), Jun 21, 2006: O-RING. BLOWN. IN LEVEL FLIGHT AT FL400, HYD VOLUME LOW A CAS MESSAGE CAME ON. OBSERVED THE VOLUME AT 14 PERCENT AND THE PRESSURE AT 2800 PSI. RAN THE CHECKLIST AND MADE A LAN
- [SDR DXTA200500864](https://openairdocs.org/sdr/DXTA200500864), Jul 25, 2005: WARNING LIGHT. ILLUMINATED. PRIMARY STAB TRIM FAIL CAS MESSAGE. ITEM IS UNDER INVESTIGATION.
- [SDR DXTA200500805](https://openairdocs.org/sdr/DXTA200500805), Jun 24, 2005: CONNECTOR. CONTAMINATED. PRI STAB TRIM FAIL CAS MESSAGES IN FLT AT FL380, PRI STAB TRIM FAIL, A/P FAIL AND MACH TRIM OFF. CHECKED SYSTEM FOR PROPER OPERATION. COULD NOT DUPLICATE SQUAWK
- [SDR DXTA200400454](https://openairdocs.org/sdr/DXTA200400454), Nov 20, 2004: AUTOPILOT SYS. MALFUNCTIONED. DURING GO AROUNDS (AFTER A COUPLE APPROACHES) THE AUTO-PILOT DISENGAGED MULTIPLE TIMES AFTER IT WAS RE-ENGAGED IN STABILIZED CLIMB/LEVEL OFF AND IN LEVEL FLIGHT
- [SDR DXTA200400430](https://openairdocs.org/sdr/DXTA200400430), Oct 20, 2004: DOOR SEAL. LEAKING. AFTER CRUISING AT FL 410 FOR APPROXIMATELY 1 HR, BAGGAGE DOOR SEAL CAS MESSAGE DISPLAYED. 15 MINUTES LATER, CABIN BEGAN TO CLIMB AT A RATE OF 1000' PER MIN WITH
- [SDR DXTA200400421](https://openairdocs.org/sdr/DXTA200400421), Oct 8, 2004: SOLENOID. FAILED. DURING INITIAL DESCENT WITH POWER REDUCTION, THE CABIN BEGAN TO CLIMB AT A RATE OF APPROX 2000 FPM. THE CABIN CONTINUED TO CLIMB AND CONTINUED TO DESCEND, THE C
- [SDR DXTA200300139](https://openairdocs.org/sdr/DXTA200300139), Oct 16, 2003: O-RING. LEAKING. LT HYDRAULIC QUANTITY DROPPED TO ZERO 10 MINUTES AFTER TAKE-OFF. (A) SYSTEM UNLOADED, GEAR BLOW DOWN AND EMERGENCY BRAKE SYSTEMS ACTUATED. ACCOMPLISHED AIR TURN
- [SDR DXTA200300040](https://openairdocs.org/sdr/DXTA200300040), Jun 1, 2003: RESOLVER. INOPERATIVE. FLAPS FAIL AMBER CAS MESSAGE ILLUMINATED AND FLAPS INDICATOR JUMPED FROM 0-35 DEGREES IN LEVEL CRUISE FLIGHT ABOVE 250 KIAS ON 3 DIFFERENT OCCASIONS. - INSPECTE

## 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

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