# N990QS: 2026 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: 680A0464 - Year built: 2026 - Type: Fixed wing multi engine - Engine type: Turbo-fan - Airworthiness: Standard, transport - Airworthiness date: February 11, 2026 - Certificate issued: March 11, 2026 - Expires: March 31, 2033 - Mode S code: ADD412 - Registered owners: [1120 Air LLC](https://openairdocs.org/faa-owner/1120%20AIR%20LLC), [Bg Capital Holdings LLC](https://openairdocs.org/faa-owner/BG%20CAPITAL%20HOLDINGS%20LLC), [Donley Clayton E Trustee](https://openairdocs.org/faa-owner/DONLEY%20CLAYTON%20E%20TRUSTEE), [Donley Linda Lee Trustee](https://openairdocs.org/faa-owner/DONLEY%20LINDA%20LEE%20TRUSTEE), [Coffin & Shawver LLC](https://openairdocs.org/faa-owner/COFFIN%20%26%20SHAWVER%20LLC), [Mueller David R](https://openairdocs.org/faa-owner/MUELLER%20DAVID%20R) - Location: [Oklahoma City, OK](https://openairdocs.org/faa-place/OK/Oklahoma%20City) - Owner type: Co-owned, fractional ownership - Owner's area on the map: 35.5467° N, 97.5646° W: Placed by OpenAirDocs at the center of ZIP code 73116, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft is based - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=990QS - Page: https://openairdocs.org/aircraft/N990QS 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 N990QS. ## FAA accident and incident reports None matched to N990QS. ## 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 DXTA2026101410017](https://openairdocs.org/sdr/DXTA2026101410017), Oct 3, 2026: LATCH. BINDING. WHEN CLOSING MCD UNABLE TO MOVE DOOR LATCH HANDLE, TRIED BOTH FROM INSIDE AND OUTSIDE, HANDLE IS JAMMED IN OPEN POSITION. PERFORMED CABIN DOOR LATCH - LOCK RIGG - [SDR DXTA2026093009938](https://openairdocs.org/sdr/DXTA2026093009938), Sep 29, 2026: HANDLE. DAMAGED. UNABLE TO MOVE DOOR HANDLE TO LOCK DOOR. TRIED TO MOVE HANDLE WITH DOOR IN OPEN POSITION AND STILL UNABLE TO MOVE HANDLE TO EXTEND PINS. RESET THE AFT BOTTOM LO - [SDR DXTA2026072008879](https://openairdocs.org/sdr/DXTA2026072008879), Jul 17, 2026: LATCH. INOPERATIVE. MAIN ENTRY DOOR WILL NOT LATCH SHUT. AFTER MCD STEP & UNDER STEP CLOSE-OUT PANEL REMOVAL, INSPECTION REVEALED THE AFT LOWER TAPER PIN ASSOCIATED WITH PUSHROD NR - [SDR DXTA2026033107462](https://openairdocs.org/sdr/DXTA2026033107462), Mar 30, 2026: POWER SUPPLY. DEFECTIVE. ON PREFLIGHT OF THE EMERGENCY LIGHTING SYSTEM FOUND FLOOR LIGHT AT SEAT 3 ALONG WITH OVERHEAD LIGHT AT SEAT 3 NOT WORKING. ALSO RIGHT WING INSPECTION LIGHT NOT ## Service difficulty reports on N990QS not matched to an aircraft (30) They name N990QS, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft. - [SDR DXTA2018010100517](https://openairdocs.org/sdr/DXTA2018010100517), Feb 1, 2018: SHUTOFF VALVE. FAILED. WHILE STARTING THE APU WHILE AIRBORNE THERE WAS A LOUD BOOM AND SIMULTANEOUSLY THE APU FIRE ANNUNCIATOR ILLUMINATED MOMENTARILY. THE APU WAS SHUT DOWN AND THE A - [SDR JGVR20171201004](https://openairdocs.org/sdr/JGVR20171201004), Dec 1, 2017: DRAG ANGLE. CORRODED. REPAIRED CORROSION FOUND UNDER THE LH WING FORWARD AND AFT DRAG ANGLES PER CESSNA REPAIR DEFINITION S-750-0190/17RD. REPAIRED CORROSION FOUND UNDER THE RH WING - [SDR JGVR20171201003](https://openairdocs.org/sdr/JGVR20171201003), Dec 1, 2017: SKIN. CORRODED. REPLACED CORRODED LH INBOARD UPPER WING SKIN WITH NEW P/N 6722311-17. - [SDR JGVR20171201001](https://openairdocs.org/sdr/JGVR20171201001), Dec 1, 2017: SKIN. CORRODED. FOUND LOWER STINGER SKIN NEAR THE APU CORRODED. REPLACED WITH NEW SKIN P/N 6712615-56. - [SDR JGVR20171201002](https://openairdocs.org/sdr/JGVR20171201002), Dec 1, 2017: SKIN. CORRODED. REPLACED CORRODED RT INBOARD UPPER WING SKIN WITH NEW P/N 6722311-18. - [SDR JGVR194F1201001](https://openairdocs.org/sdr/JGVR194F1201001), Dec 1, 2017: SKIN. CORRODED. FOUND LOWER AFT TAILCONE SKIN AND STRINGER, NEAR THE APU, CORRODED. REPLACED PARTS WITH NEW STRINGER P/N 6712615-56 AND LOWER SKIN P/N 6712615-56. - [SDR JGVR20171121003](https://openairdocs.org/sdr/JGVR20171121003), Nov 21, 2017: SKIN. CORRODED. THREE CORRODED AREAS ON THE CENTER UPPER SKIN OF THE LT PYLON. BLENDED, TREATED, FABRICATED AND INSTALLED DOUBLERS IAW EO ERO-910739, REVISION IR. - [SDR JGVR20171121002](https://openairdocs.org/sdr/JGVR20171121002), Nov 21, 2017: SKIN. DAMAGED. FOUND CORROSION AT TWO LOCATIONS ON THE EXTERIOR SURFACE UPPER SKIN OF THE LT HORIZONTAL STABILIZER, ONE AREA ABOVE THE INBOARD ELEVATOR HINGE AND ONE AREA AT T - [SDR JGVR20171120001](https://openairdocs.org/sdr/JGVR20171120001), Nov 20, 2017: SKIN. CORRODED. FOUND CORROSION ON EXTERIOR OF FUSELAGE SKIN AT APPROXIMATELY FS400 AT STRINGERS 3L, 3R, AND 4R. MECHANICALLY BLENDED, MEASURED, TREATED, AND REPLACED FASTENERS - [SDR DXTA2016122006346](https://openairdocs.org/sdr/DXTA2016122006346), Dec 19, 2016: WARNING LIGHT. FALSE ACTIVATION. CABIN DOOR OPEN MESSAGE INFLIGHT, DURING DESCENT CABIN ALTITUDE RED MESSAGE DISPLAYED. REQUIRING RAPID DESCENT. INFLATED DOOR SEALANT, NO DEFECTS NOTED. GAINED - [SDR DXTA2016091206300](https://openairdocs.org/sdr/DXTA2016091206300), Sep 12, 2016: COALESCER BAG. ODOR. REPEAT WRITE UP. THE ODOR COMING OUT OF BOTH PAC'S IS UNBEARABLE WITH APU RUNNING, BURNED OIL AND FISHY ODOR. INSPECTED APU FOR OIL RESIDUE NO OIL RESIDUE WAS F - [SDR DXTA2013061205416](https://openairdocs.org/sdr/DXTA2013061205416), Jun 11, 2013: DOWNLOCK SWITCH. FAILED. WE HAD NO GREEN NOSE GEAR INDICATION WHEN THE GEAR WAS SELECTED DOWN FOR LANDING. WE HAD 2 MAIN AND THE RED UNLOCK LIGHT WAS OUT. WE RAN THE APPROPRIATE CHECKLI - [SDR DXTA2013030805311](https://openairdocs.org/sdr/DXTA2013030805311), Mar 7, 2013: UNKNOWN. MALFUNCTIONED. DURING CLIMBOUT, CYAN YAW DAMPER FAIL UPPER A MESSAGE APPEARED. PFD WAS SELECTED TO RT SIDE AND UPPER RUDDER B WAS ILLUMINATED. MESSAGE STAYED ON FOR REMAINDER - [SDR DXTA2009033003572](https://openairdocs.org/sdr/DXTA2009033003572), Mar 29, 2009: O-RING. LEAKING. AFTER TAKEOFF THE HYD A VOLUME BEGAN TO DECREASE APPROX 1PERCENT EVERY 6 MINS. VOLUME WENT FROM 53 PERCENT TO 33 PERCENT ON TAXI IN. ACCESSED PTO PUMP AREA. RAN - [SDR DXTA200808113222](https://openairdocs.org/sdr/DXTA200808113222), Aug 11, 2008: STRUT. LEAKING. THE LANDING GEAR HANDLE WOULD NOT MOVE AFTER TAKE-OFF. TROUBLESHOT TO NOSE LANDING GEAR. WITH NOSE SIMULATOR INSTALLED AND BOTH MAIN GEAR WITH WEDGES, THE GEAR - [SDR DXTA200803222](https://openairdocs.org/sdr/DXTA200803222), Aug 11, 2008: HANDLE. INOPERATIVE. THE LANDING GEAR HANDLE WOULD NOT MOVE AFTER TAKEOFF. (S) - [SDR DXTA200702471](https://openairdocs.org/sdr/DXTA200702471), Sep 12, 2007: BRAKE ASSY. MALFUNCTIONED. MAIN GEAR ON LT SIDE APPEARS TO SENSE A LOCKED CONDITION DURING NORMAL BRAKING. BRAKES ON LT SIDE RELEASE MOMENTARILY DURING LANDING ROLL DURING SPEEDS OF AROUN - [SDR DXTA200702201](https://openairdocs.org/sdr/DXTA200702201), May 17, 2007: COALESCER BAG. ODOR. SMOKEY ODOR IN CABIN, NO VISIBLE SMOKE. [SUP 05-22-07] REMOVED BOTH COALESCERS COCKPIT IS CLEAN. CABIN HAS OIL INSIDE SEPERATOR AND SOCK IS SATURATED WITH OIL. - [SDR DXTA200702159](https://openairdocs.org/sdr/DXTA200702159), Apr 28, 2007: UNKNOWN. ODOR. NOXIOUS BURNED OIL ODOR IN COCKPIT DURING GROUND OPS. [SUP 05-03-07] GAINED ACCESS FOR APU FOUND OIL LEAK AT CHIP DETECTOR PLUG . BURN OIL TRAVELING IN THE CABI - [SDR DXTA200702083](https://openairdocs.org/sdr/DXTA200702083), Apr 5, 2007: UNKNOWN. UNKNOWN. CRUISING AT 9,000 FEET WITH A/P ON, THE TRIM CLACKER CAME ON CONTINUOUSLY TO FULL NOSE DOWN, THEN THE FGC A FAILED AND KICKED OFF A/P. REPLACED FAILED ECM. OPS - [SDR DXTA200702025](https://openairdocs.org/sdr/DXTA200702025), Mar 15, 2007: UNKNOWN. UNKNOWN. WHEN SWITCHING FROM FGS (A) TO FGS (B) THE CLACKER COMES ON IMMEDIATELY AND DOES NOT STOP. THE STAB DOES NOT MOVE. SWITCHING BACK TO FGS (A) CANCELS THE CLACKER - [SDR DXTA200701979](https://openairdocs.org/sdr/DXTA200701979), Feb 28, 2007: UNKNOWN. UNKNOWN. ELEVATOR TRIM AUDIO (CLACKER) BEGINS RUNNING CONTINUOUSLY DURING FLIGHT WITH AUTOPILOT ON BUT NO TRIMMING ACTUALLY OCCURS. THIS ONLY HAPPENS WHEN FLIGHT GUIDANC - [SDR DXTA200701963](https://openairdocs.org/sdr/DXTA200701963), Feb 24, 2007: WARNING SYSTEM. MALFUNCTIONED. AFTER ONE HOUR OF CRUISE FLIGHT THE TRIM CLACKER ACTIVATED AND RAN CONTINUOUSLY (AUTO-PILOT WAS NOT TRIMMING) AT LOWER ALTITUDES AND HIGHER TEMPS THE CLACKER SI - [SDR CWQD200701](https://openairdocs.org/sdr/CWQD200701), Dec 25, 2006: HOSE. LEAKING. DURING FINAL APPROACH THE GEAR WAS SELECTED DOWN AND THE (A) HYDRAULIC QTY FELL TO 6 PERCENT WITH (HYD VOL LOW) CAS MESSAGE. JACKED AIRCRAFT, REMOVED PANEL 184D - [SDR DXTA200601632](https://openairdocs.org/sdr/DXTA200601632), Oct 5, 2006: FLAPPER VALVE. INOPERATIVE. AT FL260 LEVEL FLIGHT-3000 LBS PER WING 0 FUEL IN CENTER TANK, WING TANK O'FULL L CAS AND SAW FUEL VENTING OVERBOARD, TURNED OFF LEFT CENTER TO WING XFER-LOST 3 - [SDR DXTA200601536](https://openairdocs.org/sdr/DXTA200601536), Aug 5, 2006: CHECK VALVE. STUCK. DURING FLIGHT AT 27,000 FT WITH FUEL X FEED SELECTED FROM RIGHT TO LEFT (2710 RIGHT TANK AND 2720 LEFT TANK ) WING TANK O FULL LCAS MESSAGE CAME ON . SHUT FUEL - [SDR DXTA20060136](https://openairdocs.org/sdr/DXTA20060136), Aug 5, 2006: CHECK VALVE. STUCK. DURING FLIGHT AT 27,000 FT WITH FUEL X FEED SELECTED FROM RT TO LT (2710 RT TANK AND 2720 LT TANK ) WING TANK O FULL LCAS MESSAGE CAME ON . SHUT FUEL X FEED OFF - [SDR DXTA200501086](https://openairdocs.org/sdr/DXTA200501086), Nov 16, 2005: WHEEL. OUT OF BALANCE. SEVERE NOSE WHEEL SHIMMY STARTED AT APPROXIMATELY 60 KIAS DURING TAKEOFF ROLL. TAKEOFF ABORTED, MAX SPEED APPROXIMATELY 65 KIAS BEFORE ABORT. INSPECTED NOSE GEA - [SDR DXTA200500796](https://openairdocs.org/sdr/DXTA200500796), Jun 21, 2005: STRUT. FAILED. AFTER TO GEAR RETRACTION NORMAL, A FEW MINUTES LATER GEAR MOVEMENT TYPE NOISE HEARD WITH NO LIGHTS OR PARTIAL EXTENSION. NOISES FOLLOWED A FEW SECONDS LATER BY - [SDR DXTA200400440](https://openairdocs.org/sdr/DXTA200400440), Nov 6, 2004: FLAPPER VALVE. FAILED. INFLIGHT THE WING TANK OVERFILL L CAS MESSAGE CAME ON. THE LEFT WING TANK SHOWED 3200 LBS OF FUEL IN IT AND FUEL STARTED TO VENT OVERBOARD, VENTING STOPPED AT A ## 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.