# N921QS: 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: 680A0344
- Year built: 2023
- Type: Fixed wing multi engine
- Engine type: Turbo-fan
- Airworthiness: Standard, transport
- Airworthiness date: May 10, 2023
- Certificate issued: May 28, 2025
- Expires: May 31, 2032
- Mode S code: ACC350
- Owner type: Co-owned, fractional ownership
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=921QS
- Page: https://openairdocs.org/aircraft/N921QS

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 N921QS.

## FAA accident and incident reports

None matched to N921QS.

## 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 DXTA2025112505813](https://openairdocs.org/sdr/DXTA2025112505813), Nov 23, 2025: DOOR. LACK OF LUBE. MAIN CABIN DOOR EXTREMELY DIFFICULT TO OPEN. VERIFIED DISCREPANCY. DOOR WAS MOVING IN A JERKING MANNER. PULLED AND RESET PCB NC101, AND CLEANED AND LUBED DOOR S
- [SDR DXTA2025051303470](https://openairdocs.org/sdr/DXTA2025051303470), May 12, 2025: DOOR. STIFF. MAIN CABIN DOOR IS DIFFICULT TO OPEN. IT DOES NOT OPEN FREELY AFTER RELEASING THE HANDLE. IT APPEARS THE DOOR MAY BE CATCHING ON THE DOOR SEAL. EVIDENCE OF SOME
- [SDR DXTA2025051203470](https://openairdocs.org/sdr/DXTA2025051203470), May 12, 2025: DOOR. NO DISCREPANCY. MAIN DOOR: MAIN CABIN DOOR IS DIFFICULT TO OPEN. IT DOES NOT OPEN FREELY AFTER RELEASING THE HANDLE. IT APPEARS THE DOOR MAY BE CATCHING ON THE DOOR SEAL. EVIDE
- [SDR DXTA2024101400827](https://openairdocs.org/sdr/DXTA2024101400827), Oct 12, 2024: FILTER. ODOR. CABIN ODOR: EXHAUST/ OIL SMELL STRONG DURING STARTUP DESPITE APU BLEED AIR BEING OFF. CORRECTIVE ACTION: REPLACED HEPA FILTER IAW CE680A AMM 21·70·10. NO DEFE

## Service difficulty reports on N921QS not matched to an aircraft (44)

They name N921QS, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft.

- [SDR 2018F00026](https://openairdocs.org/sdr/2018F00026), Nov 1, 2017: SPAR. CORRODED. CORROSION IN LEFT AND RIGHT WING AFT SPAR COVES.
- [SDR 2018F00027](https://openairdocs.org/sdr/2018F00027), Nov 1, 2017: SPAR CAP. CORRODED. REPAIR OF LEFT AND RIGHT WING REAR SPAR CAP CORROSION.
- [SDR JGVR20170614003](https://openairdocs.org/sdr/JGVR20170614003), Jun 14, 2017: HINGE. CORRODED. DURING CONNECTION OF MAIN ENTRY DOOR, SPADE DOOR NOTED CORROSION BENEATH PAINT ON FWD FUSELAGE HINGE HALF. REMOVED AND REPLACED THE DOOR FORWARD HINGE HALF IAW 
- [SDR DXTA2016020306180](https://openairdocs.org/sdr/DXTA2016020306180), Feb 3, 2016: BLADE. DAMAGED. NUMBER 2 ENG HAS 5 BLADES DAMAGED & BENT. ACCOMPLISHED FAN BLADE INSPECTION IAW MM 72-21-15-200-801. R & R 5 FAN BLADES IAW MM 72-21-15-000-801 & 82-21-15-400-8
- [SDR DXTA2016020206176](https://openairdocs.org/sdr/DXTA2016020206176), Feb 3, 2016: BLADE. BENT. ON PREFLIGHT FOUND 4 BLADES ON PRIMARY FAN ARE BENT ON NR 1 ENG. ACCOMPLISHED FAN BLADE INSPECTION IAW MM 72-21-15-200-801. R & R 6 FAN BLADES IAW MM 72-21-15-0
- [SDR DXTA2016012306167](https://openairdocs.org/sdr/DXTA2016012306167), Jan 23, 2016: CIRCUIT BREAKER. FAILED. PRIMARY STAB FAILED AT 23000 FEET WITH ASSOCIATED CAS MESSAGES. PRIMARY TRIM POWER CIRCUIT BREAKER TRIPPED WITH A FAINT BURNING ODOR. R & R THE PRIMARY STAB TRI
- [SDR DXTA2015072706050](https://openairdocs.org/sdr/DXTA2015072706050), Jul 24, 2015: UNKNOWN. ODOR. WHILE SETTING UP COCKPIT FOR A FLIGHT , NOTICED A SUBTLE OIL ODOR FROM THE VENTS. ON GND APU ONLY. AFTER SEVERAL MINUTES, SMOKE APPEARED. OPERATIONAL TESTED THE
- [SDR DXTA2014042505741](https://openairdocs.org/sdr/DXTA2014042505741), Apr 24, 2014: CAM. DAMAGED. DURING GEAR RETRACTION, RT MLG RETRACTED NORMALLY WHILE NOSE & LT MLG REMAINED DOWN & LOCKED. RED UNLOCK LIGHT REMAINED ON ALONG WITH GREEN LOCKED NOSE & LT MLG
- [SDR DXTA2014042405740](https://openairdocs.org/sdr/DXTA2014042405740), Apr 23, 2014: STRUT. DISCHARGED. DURING TAKEOFF, THE LANDING GEAR DID NOT PROPERLY RETRACT. GEAR HANDLE WAS DIFFICULT TO RELEASE TO UP POSITION, BUT RELEASED. LANDING GEAR UNLOCK RED LIGHT, RT 
- [SDR DXTA2014021705657](https://openairdocs.org/sdr/DXTA2014021705657), Feb 16, 2014: DISPLAY. FAULTY. AT FL430 WE GOT A CHECK DU5 EICAS MESSAGE. NEXT WE SMELLED SMOKE IN THE COCKPIT. REMOVED DU-870, DU-5, PN 7014300-901, SN 0412E232. INSTALLED REPAIRED DU-870, P
- [SDR DXTA2013012905265](https://openairdocs.org/sdr/DXTA2013012905265), Jan 28, 2013: COMPRESSOR. INOPERATIVE. COCKPIT PAC TEMPERATURE WAS UNCONTROLLABLE WHILE ON THE GROUND. COCKPIT FILLED WITH BLUEISH WHITE SMOKE BEFORE COCKPIT PAC WAS SECURED. COCKPIT SUPPLY TEMP INDI
- [SDR DXTA2013012105252](https://openairdocs.org/sdr/DXTA2013012105252), Jan 20, 2013: COALESCER BAG. ODOR. SMOKEY OIL ODOR COMING THROUGH AIR VENTS. REMOVED AND CLEANED COOLESCER SOCKS WITH MILD DETERGENT. INSPECTED ALL DUCT WORK AND BORESCORED THE APU. RAN APU WITH 
- [SDR DXTA2012041904954](https://openairdocs.org/sdr/DXTA2012041904954), Apr 18, 2012: UPLOCK. OUT OF RIG. NOSE GEAR "BUMP IN THE NIGHT" ON CLIMB OUT THRU 26400' AND 36900', THEN 44 MINS INTO THE FLIGHT AT FL400. CHECKED NOSE STRUT EXTENSION. EXTENSION CHECKED GOOD. 
- [SDR DXTA2012030504898](https://openairdocs.org/sdr/DXTA2012030504898), Mar 2, 2012: BRAKE. LEAKING. LEFT BRAKES WERE SMOKING AFTER LANDING, NO DAMAGE NOTED. REMOVED BRAKE ASSY DUE TO UNIT FOUND TO BE LEAKING FROM PISTONS. REPLACED WITH A O/H UNIT. OPS & LEAK C
- [SDR CWQR2011111028](https://openairdocs.org/sdr/CWQR2011111028), Nov 10, 2011: TUBE. CRACKED. CREW REPORTED A LT WING HOT CAS MESSAGE. AFTER REMOVING THE L/E, FOUND LOOSE INSULATION AND TAPE. REMOVED INSULATION AND FOUND 1.85 INCH CRACK IN THE TUBE BEND 
- [SDR CWQR2011111027](https://openairdocs.org/sdr/CWQR2011111027), Nov 10, 2011: TUBE. CRACKED. CREW REPORTED A LT WING HOT CAS MESSAGE. AFTER REMOVING THE L/E, FOUND LOOSE INSULATION AND TAPE. REMOVED INSULATION AND FOUND 1.59541675 INCH CRACK IN THE TUBE
- [SDR DXTA2010072604177](https://openairdocs.org/sdr/DXTA2010072604177), Jul 23, 2010: PRESSURE SWITCH. MALFUNCTIONED. APPROX 30 SECONDS AFTER PLACING THE GEAR DOWN, THE "HYD PUMP FAIL A" MESSAGE ILLUMINATED AT LEAST 10 TIMES, REMAINING ON FOR SEVERAL SECONDS EACH OCCURANCE. "SY
- [SDR DXTA2009051803655](https://openairdocs.org/sdr/DXTA2009051803655), May 17, 2009: PCU. LEAKING. LOST B HYD SYS ENROUTE. "HYD B VOL LOW" CAS MSG AROUND FL 210. DURING DESCENT IN TO PHX "RUDDER STBY FAIL" CAS ILLUMINATED. VERIFIED DISCREPANCY, CLEANED RESIDU
- [SDR DXTA2009040603583](https://openairdocs.org/sdr/DXTA2009040603583), Apr 3, 2009: BELLCRANK. STIFF. ROLL CONTROL IS VERY TIGHT IN BOTH DIRECTIONS. INVESTIGATED AND FOUND RT SPOILER BELLCRANK STIFF, LUBRICATED AND OPS CHECK WAS SATISFACTORY IAW MM 27-12-03.
- [SDR DXTA2009040603580](https://openairdocs.org/sdr/DXTA2009040603580), Apr 3, 2009: BUNGEE. STIFF. ON APPROACH, AFTER DISCONNECTING AUTOPILOT, PITCH CONTROL SEEMED ALMOST FROZEN. ABNORMAL FORCE WAS REQUIRED TO MOVE PITCH CONTROL IN BOTH DIRECTIONS. PULLED PIT
- [SDR DXTA2009032603563](https://openairdocs.org/sdr/DXTA2009032603563), Mar 25, 2009: CONVERTER. ODOR. A VISIBLE HAZE WITH AN OILY ODOR FORMED IN THE COCKPIT AND CABIN WHEN IN THE T/O DETENT. WENT TO THE RUN UP PAD AND RAN IT UP WITH BOTH PACS ON AND IT HAPPENED 
- [SDR DXTA2009031603546](https://openairdocs.org/sdr/DXTA2009031603546), Mar 14, 2009: CONTROL MODULE. INOPERATIVE. AMBER CAS MESSAGE ILLUMINATED (PRIMARY STAB TRIM FAIL) AND (MACH TRIM). ALSO THE CYAN (YD LOWER B FAIL) CAS MESSAGE CAME ON. COULD NOT GET TO FAIL ON GROUND CHE
- [SDR DXTA200803168](https://openairdocs.org/sdr/DXTA200803168), Jul 10, 2008: SEAL. WORN. DURING FUELING ON THE GROUND FUEL LEAKED OUT OF LT TANK OVERFLOW VENT AND AMBER CAS WING TANK O FULL L CAME ON APPROX 20 GALS OF FUEL LEAKED OUT ON RAMP. REMOVE
- [SDR DXTA200803051](https://openairdocs.org/sdr/DXTA200803051), May 9, 2008: PITOT HEAD. FAILED. CLIMBING THROUGHT 10,000 FT, WE HAD A DUAL FGC FAILURE. INSPECTED LT AND RT PITOT PROBES. FOUND RT FWD DRAIN TO BE BLOCKED. THE RT AFT DRAIN, AND BOTH LT DRAINS
- [SDR DXTA200802979](https://openairdocs.org/sdr/DXTA200802979), Apr 4, 2008: ACM. ODOR. DURING GEAR RETRACTION, CABIN SPIKED 4000 FPM (CLIMB) AND A STRONG ENVIROMENTAL BURNING ODOR APPEARED. REMOVED & REPLACED COCKPIT ACM, OPERATIONALY CHECKS GOOD.
- [SDR DXTA20082979](https://openairdocs.org/sdr/DXTA20082979), Apr 4, 2008: UNKNOWN. ODOR. DURING GEAR RETRACTION, CABIN SPIKED 4000 FPM (CLIMB) AND A STRONG ENVIROMENTAL BURNING SMELL APPEARED.
- [SDR DXTA200802971](https://openairdocs.org/sdr/DXTA200802971), Mar 30, 2008: COALESCER BAG. DIRTY. CABIN ALTITUDE SPIKED TO 4000 FT/MIN CLIMB DURING GEAR RETRACTION. SHORTLY THERE AFTER SMOKE ENTERED THE CABIN THEN DISSIPATED. REPLACED BOTH COALESCER SOCKS IA
- [SDR DXTA20082971](https://openairdocs.org/sdr/DXTA20082971), Mar 30, 2008: COALESCER BAG. ODOR. CABIN ALTITUDE SPIKED TO 4000 FT /MIN CLIMB DURING GEAR RETRACTION . SHORTLY THERE AFTER SMOKE ENTERED THE CABIN THEN DISSIPATED. REPLACED BOTH COALESCER SOCKS 
- [SDR DXTA200702484](https://openairdocs.org/sdr/DXTA200702484), Sep 18, 2007: HOLDER. DAMAGED. SMOKE OBSERVED COMING FROM THE PILOTS YOKE CLIP LIGHT WITH THE RHEOSTAT IN THE OFF POSITION. 09-28-07 REPLACED PILOT'S CHART HOLDER, P/N 10-62-01, AND INSTALLED
- [SDR DXTA200702470](https://openairdocs.org/sdr/DXTA200702470), Sep 11, 2007: UNKNOWN. SMOKE. STATIC TAKEOFF: ALL ENGINES AND AIRCRAFT INDICATIONS GOOD. AT 60 KIAS RT SEAT PILOT CALLED FOR ABORT DUE TO SMOKE IN COCKPIT. SMOKE WAS BLUE IN COLOR, OIL ODOR.
- [SDR DXTA200702390](https://openairdocs.org/sdr/DXTA200702390), Aug 8, 2007: A/C PACK. ODOR. COCKPIT PAC HAS OIL BURNING ODOR DURING WARM PAC OPERATIONS. REMOVED AND REPLACED COCKPIT ACM TURBINE. I.A.W. CE-750 CH. 21-51-00. OPERATIONAL LEAK CHECKS GOOD.
- [SDR DXTA200702305](https://openairdocs.org/sdr/DXTA200702305), Jun 28, 2007: POSITION SENSOR. OUT OF ADJUST. RUDDER OSCILLATED IN CRUISE FLIGHT (FL270 - 340KTS IAS) FOR APPROX 10 SECS FOLLOWED BY BLUE YD FAIL - B MSG FOLLOWED APPROX 20 SECS LATER BY YELLOW (YD FAIL - A
- [SDR DXTA200702298](https://openairdocs.org/sdr/DXTA200702298), Jun 25, 2007: RUDDER. OSCILLATES. RUDDER OSCILLATED IN CRUISE FLT AND THROUGHOUT DESCENT. YD FAIL UPPER B CAME ON DURING THE FLIGHT AND REMAINED ON, OSCILLATION STOPPED AFTER SLOWING BELOW 300KT
- [SDR DXTA200702095](https://openairdocs.org/sdr/DXTA200702095), Apr 9, 2007: PITOT TUBE. OBSTRUCTED. INFLIGHT, WHEN APU WAS SHUTDOWN AT ABOUT 15,000 FT MSL, THE (MACH TRIM OFF) (AMB) AND (YD LOWER OFF) AMBER MSGS ILLUMINATED. CHECKLIST PROCEDURES WERE USED TO N
- [SDR DXTA200601799](https://openairdocs.org/sdr/DXTA200601799), Dec 14, 2006: WARNING LIGHT. ILLUMINATED. HAD MASTER CAUTION FOLLOWED BY TWO FADEC FAIL MESSAGES DURING TO ROLL ABORTED - LIGHTS WENT OUT "YD LOWER FAIL" CAME ON DURING ABORT AND STAYED ON. PURGED LARGE
- [SDR DXTA200601709](https://openairdocs.org/sdr/DXTA200601709), Nov 3, 2006: PIN. BACKED OUT. LOST MAIN DC POWER FOR RT SIDE. TROUBLESHOT ELECTRICAL SYSTEM AND VERIFIED AIRCRAFT CROSS TIE WOULD NOT CLOSE AND ENERGIZE FROM OPPOSITE GENERATOR. RANG OUT WIR
- [SDR DXTA200601354](https://openairdocs.org/sdr/DXTA200601354), Apr 21, 2006: ACTUATOR. FAULTY. AFTER LANDING GEAR RETRACTION , RED UNLOCK LIGHT REMAINED ON. WHEN GEAR WAS LOWERED , RED UNLOCKED WENT OUT , ALL GREEN ON. REMOVED AND REPLACED NOSE LANDING GE
- [SDR DXTA200501080](https://openairdocs.org/sdr/DXTA200501080), Nov 1, 2005: RELAY. FAILED. TRAILING EDGE FLAPS DID NOT DEPLOY FOR LANDING -FLAPS FAIL- WOULD NOT RESET. NO FLAP EMERGENCY LANDING, CHECKLIST USED WITH NO FUTHER EVENTS. REPLACED KZ092 FLA
- [SDR DXTA200501035](https://openairdocs.org/sdr/DXTA200501035), Oct 23, 2005: POSITION SWITCH. OUT OF ADJUST. NOSE GEAR RELEASED FROM LOCK IN FLIGHT CLIMBING THROUGH FL 280 AND FL 320 AND DESCENDING THROUGH FL 230. GEAR DID NOT EXTEND, NOR DID NOT OBSERVE THE GEAR UNLOC
- [SDR DXTA200500961](https://openairdocs.org/sdr/DXTA200500961), Sep 9, 2005: PITOT SYSTEM. WARNING LIGHT. AMBER 'P/S-RAT HEAT OFF' CAS MESSAGE ILLUMINATED DURING TAKEOFF ROLL. T/O ABORTED. SWITCHES WERE IN THE ON POSITION THE ENTIRE TIME. CHECKED FOR MESSAGE ON MAIN
- [SDR DXTA200500939](https://openairdocs.org/sdr/DXTA200500939), Aug 30, 2005: CONTROLLER. FAULTY. AMBER FLAPS FAIL CAS MESSAGE ON FLAP EXTENSION FROM 15-35 DEGREES. RESET AND THEN WORKED NORMAL FOR SECOND APPROACH. FOUND BITE 3 SHOWING ON CONTROLLER. TROUBLE
- [SDR DXTA200500888](https://openairdocs.org/sdr/DXTA200500888), Aug 9, 2005: SLAT. INOPERATIVE. GOT "FLAP FAIL" AMBER EICAS MESSAGE DURING APPROACH. FOLLOWED CHECKLIST BUT COULDN'T CLEAR. GOT SLATS AND NO FLAPS.
- [SDR DXTA200500884](https://openairdocs.org/sdr/DXTA200500884), Aug 3, 2005: DISPLAY. FAILED. NR 1 DU DISPLAY FAILED INFLIGHT. SLIGHT SMELL OF ELECTRIC SHORT OCCURRED BUT DISAPPEARED AFTER DESELECTING NR 1 DU AS THE PFD DISPLAY. VERIFIED DU870 DEAD. REMO
- [SDR DXTA200500860](https://openairdocs.org/sdr/DXTA200500860), Jul 24, 2005: FITTING. LOOSE. "RUD STBY SYS FAIL" CAS MESSAGE ILLUMINATED TWICE IN FLIGHT. RSS PRESSURE FLUCTUATED 2200 TO 3800 PSI. DUPLICATED SQK ON GROUND. FOUND RUDDER STANDBY ACCUMULATO

## 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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