# N944QS: 2024 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: 680A0377
- Year built: 2024
- Type: Fixed wing multi engine
- Engine type: Turbo-fan
- Airworthiness: Standard, transport
- Airworthiness date: January 30, 2024
- Certificate issued: February 27, 2024
- Expires: February 28, 2031
- Mode S code: AD1D73
- Owner type: Co-owned, fractional ownership
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=944QS
- Page: https://openairdocs.org/aircraft/N944QS

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 N944QS.

## FAA accident and incident reports

None matched to N944QS.

## Service difficulty reports (4)

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 DXTA2025060903783](https://openairdocs.org/sdr/DXTA2025060903783), Jun 5, 2025: UPLOCK SWITCH. DEFECTIVE. DURING THE APPROACH TO LANDING PHASE OF FLIGHT, THE GEAR LEVER WAS PULLED DOWN. WE RECEIVED THE AMBER "GEAR DISAGREE R" MESSAGE. THE QRH SENT US TO THE LANDING 
- [SDR DXTA2025021702363](https://openairdocs.org/sdr/DXTA2025021702363), Feb 13, 2025: WING. DAMAGED. LH WINGTIP HAS SUSTAINED DAMAGE FROM CONTACT WITH A SCISSOR LIFT DURING A REPO INTO THE HANGAR. THE LINE PERSONNEL TOWED THE AIRCRAFT INTO THE HANGAR FOR MX. TH
- [SDR DXTA2024062512159](https://openairdocs.org/sdr/DXTA2024062512159), Jun 24, 2024: STRUT. FAULTED. DURING TAKEOFF AND JUST AFTER MLG HANDLE WAS RAISED, ADC SSEC MISCOMPARE & GEAR DISAGREE N EICAS MESSAGES ILLUMINATED & WAS OBVIOUS NLG DID NOT RETRACT & YELLOW
- [SDR DXTA2024032511292](https://openairdocs.org/sdr/DXTA2024032511292), Mar 23, 2024: PIN. LACK OF LUBE. MAIN CABIN DOOR VERY DIFFICULT TO OPEN AND CLOSE FROM INSIDE AND OUTSIDE OF AIRCRAFT. PERFORMED A GVI OFTHE MED IAW CE680A AMM 52-10-00. TECHS FOUND A THE MED P

## Service difficulty reports on N944QS not matched to an aircraft (31)

They name N944QS, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft.

- [SDR DXTA2015101906108](https://openairdocs.org/sdr/DXTA2015101906108), Oct 17, 2015: BRAKE. FAILED. NR 1 LT MAIN OTBD BRAKE WAS SMOKING AFTER BLOCKING IN & GRABBED WHEN PARKING. R & R NR 1 BRAKE ASSEMBLY, BLED SYS & PERFORMED OPS CHECKS. ALL OPS CHECKED GOOD A
- [SDR DXTA2013090905496](https://openairdocs.org/sdr/DXTA2013090905496), Sep 8, 2013: ACM. FAILED. AFTER RUNNING APU FOR 15 MINUTES, CABIN FILLED WITH SMOKE AND SMELLED LIKE BURNED MATCHES OR RUBBER. SHUT PACS AND APU OFF. TROUBLESHOT TO ACM. OIL BLACK AND SH
- [SDR DXTA2012113005198](https://openairdocs.org/sdr/DXTA2012113005198), Nov 29, 2012: GENERATOR. FAILED. APU GENERATOR FAILED ON GROUND. COULD NOT RESET. FOUND THE APU GENERATOR AND ITS MOUNTAING PAD TO BE DAMAGED FROM EXCESSIVE HEAT. FOUND APU GENERATOR CATASTROPH
- [SDR DXTA2012100105135](https://openairdocs.org/sdr/DXTA2012100105135), Sep 30, 2012: DOWNLOCK SWITCH. MALFUNCTIONED. DURING LANDING, GEAR WAS EXTENDED BELOW 14,000 FT AT 180KTS. RED GEAR UNSAFE INDICATION STAYED ILLUMINATED AND NOSE GEAR DID NOT SHOW GREEN. BOTH MAIN GEAR SHOW
- [SDR DXTA2012091405121](https://openairdocs.org/sdr/DXTA2012091405121), Sep 13, 2012: UNKNOWN. ODOR. FOUL ODOR FROM CABIN PAC DURING FLIGHT. REMOVED CABIN HEAT EXCHANGER AND CLEANED. REMOVED AND REPLACED CABIN TURBO COMPRESSOR. PERFORMED DUCT BURN OUT PROCEDURE
- [SDR DXTA2012040204943](https://openairdocs.org/sdr/DXTA2012040204943), Apr 1, 2012: METERING VALVE. FAILED. AFTER LANDING, NOTICED THE BRAKES APPEARED TO BE DRAGGING. IT REQUIRED 80 PERCENT POWER TO MOVE THE ACFT FORWARD AND WHEN THE POWER WAS REDUCED A NOTICABLE SHUD
- [SDR DXTA2011102004756](https://openairdocs.org/sdr/DXTA2011102004756), Oct 19, 2011: ACM. FAILED. ON DESCENT SMOKE AND BURNING ODOR WERE PRESENT IN COCKPIT AND CABIN. AFTER COMPLETING CHECKLIST SMOKE AND ODOR SUBSIDED. (SEEMED ELECTRICAL ). AFTER PAX DISEMBA
- [SDR DXTA2011100604745](https://openairdocs.org/sdr/DXTA2011100604745), Oct 5, 2011: CONTROL CABLE. MALFUNCTIONED. BRAKES WERE DRAGGING ON TAXI IN, ALONG WITH A BRAKE SQUEEKING NOISE. FURTHER INVESTIGATION ON THE GROUND WE SAW THE LT INBD BRAKE APPLY ITSELF WITH HYD PRESSURE
- [SDR DXTA2010121104358](https://openairdocs.org/sdr/DXTA2010121104358), Dec 9, 2010: A/C PACK. LEAKING. STRONG TURBINE OIL ODOR IS COMING FROM THE ACMS WITH THE APU RUNNING. THE ODOR SOMEWHAT SUBSIDES WITH THE COCKPIT PAC OFF. THE OIL ON THE REAR (COCKPIT) ACM APP
- [SDR DXTA2010112904321](https://openairdocs.org/sdr/DXTA2010112904321), Nov 24, 2010: PDU. MALFUNCTIONED. GOT AMBER FLAP FAIL CAS MESSAGE ON FINAL APPROACH. WILL NOT RESET. FLAP CONTROLLER SHOWED FAULT BIT 2 UPON ARRIVAL. PERFORMED PDU CLUTCH CHECK IAW MM 27-52-00. 
- [SDR DXTA2009032703567](https://openairdocs.org/sdr/DXTA2009032703567), Mar 26, 2009: SQUAT SWITCH. OUT OF POSITION. AFTER TAKEOFF, LDG GEAR HANDLE COULD NOT BE MOVED TO UP POSITION. INSTALLED SPACER AND ADJUSTED SQUAT SWITCH IAW MM 32-20-02 AND 32-60-00. OPS CHECKED GOOD.
- [SDR DXTA2009031303540](https://openairdocs.org/sdr/DXTA2009031303540), Mar 12, 2009: SQUAT SWITCH. INOPERATIVE. GEAR WOULD NOT RETRACT AFTER TAKEOFF. INSPECTED LANDING GEAR. FOUND THAT THE SQUAT SWITCH ON THE NR 1 MLG TO BE OUT OF ADJUSTMENT BY ALMOST :75 OF A TURN. WORK 
- [SDR DXTA2000810053295](https://openairdocs.org/sdr/DXTA2000810053295), Oct 5, 2008: SCHRADER VALVE. LEAKING. STANDBY RUDDER SYS FAILED IN FLIGHT. CHECKED STANDBY RESERVOIR LEVEL IAW MM 29-20-05, OPS CHECK GOOD. TROUBLESHOT, PUMP CYCLING TOO LONG. FOUND ACCUMULATOR NITR
- [SDR DXTA200803295](https://openairdocs.org/sdr/DXTA200803295), Oct 5, 2008: CONTROL SYSTEM. FAILED. STANDBY RUDDER SYSTEM FAIL IN FLIGHT. (K)
- [SDR DXTA200808183233](https://openairdocs.org/sdr/DXTA200808183233), Aug 18, 2008: ECU. DEFECTIVE. IN FLIGHT, CREW SMELLED DEEP MUSTY SMELL FOLLOWED BY BURNING SMELL FROM ENVIROMENTAL SYS. ISOLATED THE COCKPIT PAC AND SMELL WENT AWAY AFTER ABOUT 5 MIN. REPLAC
- [SDR DXTA200803233](https://openairdocs.org/sdr/DXTA200803233), Aug 18, 2008: UNKNOWN. ODOR. IN FLIGHT CREW DETECTED DEEP MUSTY ODOR FOLLOWED BY BURNING ODOR FROM ENVIRONMENTAL SYSTEM. (S)
- [SDR DXTA200803029](https://openairdocs.org/sdr/DXTA200803029), Apr 28, 2008: COMPUTER. FAILED. ON TAKEOFF, WE HAD MACH TRIM, LOWER YD, AND FGC COMPUTER FAIL. PURGED THE NR 1 AND 2 PITOT STATIC SYSTEMS. PERFORMED LEAK TEST OF THE NR 1 AND 2 PITOT STATIC SY
- [SDR DXTA200702664](https://openairdocs.org/sdr/DXTA200702664), Dec 9, 2007: WHEEL. VIBRATES. EXTREMELY VIOLENT NOSEWHEEL SHIMMY ON TAKEOFF AT 70 KIAS. SHIMMY BROKE BOTH FILLAMENTS IN THE TAXI LIGHTS AND FLUID IS LEAKING FROM THE STRUT, AND YAW DAMPER AM
- [SDR DXTA200702416](https://openairdocs.org/sdr/DXTA200702416), Aug 22, 2007: ACTUATOR. INOPERATIVE. DURING TAKEOFF ROLL APPROXIMATELY 80 KTS, YAW DAMP OFF LOWER B CAS MESSAGE. REMOVED FAILED NR 2 LINEAR ACTUATOR, INSTALLED REPAIRED NR 2 LINEAR ACTUATOR, IAW CE
- [SDR DXTA200702322](https://openairdocs.org/sdr/DXTA200702322), Jul 7, 2007: ACM. FAILED. DESCENDING TROUGH FL310 CREW HEARD A VERY LOUD POP SOUND FOLLOWED IMMEDIATELY BY A STRONG SMOKE SMELL. NO SMOKE WAS OBSERVED, THE POP SOUND SEEMED TO COME FROM 
- [SDR DXTA200702214](https://openairdocs.org/sdr/DXTA200702214), May 23, 2007: SERVO. INOPERATIVE. FL410, AIRCRAFT STARTED LT BANK (YOKE MOVED ABOUT 60 FT TO THE LT) CASS MESSAGE RETRIM LT WING DOWN CAME ON. LIGHT WENT OUT AFTER ABOUT 5 MINS. REPLACED AILERON
- [SDR DXTA200702145](https://openairdocs.org/sdr/DXTA200702145), Apr 26, 2007: WARNING LIGHT. ILLUMINATED. FLIGHT CONTROL PAGE INDICATES LT AILERON LOW AND INDICATES LIMITED TRAVEL. [SUP 05-02-07] TROUBLESHOT & VERIFIED AILERON TRAVELS TO BE NORMAL - LH AILERON INDIC
- [SDR DXTA200702044](https://openairdocs.org/sdr/DXTA200702044), Mar 22, 2007: TRIM SYSTEM. FAILED. PRIMARY STABILIZER TRIM FAILED IN-FLIGHT. PRIMARY TRIM ALSO DOES NOT WORK ON GROUND. REMOVED AND REPLACED FAILED MOTOR ASSEMBLY. PERFORMED OPS CHECK SATISFACTOR
- [SDR DXTA200701989](https://openairdocs.org/sdr/DXTA200701989), Mar 2, 2007: ACTUATOR. INOPERATIVE. RUD LIMIT FAIL "B' AMBER EICAS MESSAGE CTRL POS SHOWS RUDDER LIMT 86%.CHECKED SYTEM FOR PROPER OPERATION. COULD NOT DUPLICATE. REMOVED AND REPLACED RUDDER LIMIT
- [SDR DXTA200601360](https://openairdocs.org/sdr/DXTA200601360), Apr 24, 2006: ACM. FAILED. ON FULL POWER TAKEOFF ROLL, AFTER 5 SECONDS OR SO A BURNING RUBBER SMELL WAS SENSED. TAKEOFF DISCONTINUED. POST FLIGHT INSPECTION NORMAL. T/S TO DEFECTIVE ACM, 
- [SDR DXTA200601324](https://openairdocs.org/sdr/DXTA200601324), Mar 30, 2006: ACM. FAILED. AFTER PULLING THE POWER BACK FOR DESCENT, GOT A STRONG SMELL. COCKPIT ACM BECAME HARD TO CONTROL. FOUND COCKPIT ACM TO HAVE FAILED. REMOVED ACM AND INSTALLED OV
- [SDR DXTA200601316](https://openairdocs.org/sdr/DXTA200601316), Mar 24, 2006: PUMP. INOPERATIVE. AT FL 400 THE HYDRAULIC VOLUME LOW -A- CAME ON. THE HYDRAULIC -A- QUANTITY GAUGE WAS SHOWING 12 PERCENT AND NORMAL PRESSURE. UPON LANDING THE QUANTITY WAS DOWN 
- [SDR DXTA200501132](https://openairdocs.org/sdr/DXTA200501132), Dec 5, 2005: RESOLVER. MALFUNCTIONED. FLAPS FAIL CAS MESSAGE / SLATS DEPLOYED. FLAPS FAILED APPROX 1 DEGRESS 14,000 FT MSL 230 KIAS. SLOWED TO 180 KIAS STILL FAIL. PERFORMED FLAP SYSTEM OPS CHECK & 
- [SDR DXTA200501029](https://openairdocs.org/sdr/DXTA200501029), Oct 16, 2005: WARNING LIGHT. ILLUMINATED. WHILE DESCENDING TO LAND, WITH NO FLAPS OR SLATS EXTENDED, RECEIVED AN AMBER FLAP FAIL MESSAGE ALONG WITH THE FLAPS INDICATING FLAPS 15 DEGREES WHEN UP. FOLLOWE
- [SDR DXTA200500722](https://openairdocs.org/sdr/DXTA200500722), May 12, 2005: SEAL. LEAKING. THE BUMP IN THE NIGHT OCCURRED AT FL280 LEVEL FLIGHT FOLLOWED BY A NOSE RED UNLOCK LIGHT ON. STAYED ON FOR 20 MIN UNTIL LOWERING THE LANDING GEAR, 3 GREEN, NO R
- [SDR DXTA200300171](https://openairdocs.org/sdr/DXTA200300171), Nov 22, 2003: ACM. FAILED. DURING DESCENT HAD SMOKE IN COCKPIT TURNED OFF LEFT CABIN PAC AND SMOKE CLEARED, LANDED SAFELY AT GSO. TROUBLESHOT AND FOUND FAULTY COCKPIT ACM TURBINE, REMOVED

## 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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