# NTSB investigations: Continental GTSIO-520-C

NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports.

Page 1 of 7 · 332 cases

## Latest cases

- [NTSB GAA26WA228](https://openairdocs.org/ntsb/GAA26WA228.md): Cessna 401 · Ciudad del Carmen, Mexico · Accident · No injuries · Class 5 · Foreign · Jun 25, 2026 · N35VC · Substantial damage
- [NTSB ERA26FA179](https://openairdocs.org/ntsb/ERA26FA179.md): Cessna 401B · Land O' Lakes, FL · Accident · 1 fatal · Class 3 · Field · Preliminary report · Apr 19, 2026 · N122AT · Destroyed
  > On April 19, 2026, about 0834 eastern daylight time, a Cessna 401B, N122AT, was destroyed when it was involved in an accident near Land O’ Lakes, Florida. The commercial pilot was fatally injured. The airplane was operated as a Title 14 Code of Federal…
- [NTSB WPR26LA145](https://openairdocs.org/ntsb/WPR26LA145.md): Cessna 421B · Sedona, AZ · Accident · No injuries · Class 3 · Limited · Preliminary report · Mar 27, 2026 · N799TF · Substantial damage
  > On March 27, 2026, about 1630 Pacific daylight time, a Cessna 421B, N799TF, was substantially damaged when it was involved in an accident near Sedona, Arizona. The pilot and pilot rated passenger were not injured. The airplane was operated as a Code of…
- [NTSB ERA26LA050](https://openairdocs.org/ntsb/ERA26LA050.md): Cessna 401 · Eureka, NC · Accident · Minor injuries · Class 3 · Limited · Preliminary report · Nov 18, 2025 · N6255Q · Substantial damage
  > On November 18, 2025, at 12:30 eastern standard time, a Cessna 401A, N6255Q, was substantially damaged when it was involved in an accident near Eureka, North Carolina. The commercial pilot received minor injuries. The airplane was operated as a Title 14 Code…
- [NTSB ANC24FA094](https://openairdocs.org/ntsb/ANC24FA094.md): Cessna 207 · Saint Mary's, AK · Accident · 4 fatal · Class 3 · Field · Preliminary report · Sep 16, 2024 · N90193 · Destroyed
  > On September 15, 2024, about 2204 Alaska daylight time, a Cessna 207 airplane, N90193, was destroyed when it was involved in an accident near St. Mary’s, Alaska. The pilot and three passengers were fatally injured. The flight was operated as a Title 14 Code…
- [NTSB CEN24FA212](https://openairdocs.org/ntsb/CEN24FA212.md): Beech V35A · Arvada, CO · Accident · 1 fatal · Class 3 · Field · Final report · Jun 7, 2024 · N150WR · Destroyed
  > A total loss of engine power due to oil starvation as a result of loose turbocharger oil line fittings.
- [NTSB DCA24WA107](https://openairdocs.org/ntsb/DCA24WA107.md): Boeing 737 · Tapachula, Mexico · Incident · Class 5 · Foreign · Feb 21, 2024 · XA-ADU · 2 aircraft · No damage
- [NTSB CEN24LA063](https://openairdocs.org/ntsb/CEN24LA063.md): Cessna T210 · Sapulpa, OK · Accident · No injuries · Class 3 · Limited · Final report · Dec 13, 2023 · N6789R · Substantial damage
  > The total loss of engine power due to the failure of the left magneto and subsequent damage to a lead for the right magneto.
- [NTSB ERA24LA041](https://openairdocs.org/ntsb/ERA24LA041.md): Cessna 421 · Lake City, FL · Accident · No injuries · Class 3 · Limited · Final report · Nov 11, 2023 · N977SM · Substantial damage
  > A landing gear collapse following an aborted takeoff due to degraded climb performance for reasons that could not be determined.
- [NTSB CEN23LA267](https://openairdocs.org/ntsb/CEN23LA267.md): Cessna 421 · Rockport, TX · Accident · No injuries · Class 3 · Limited · Final report · Jun 24, 2023 · N123SM · Substantial damage
  > The failure of the left engine starter adapter gear, which resulted in catastrophic damage to other engine components, and the subsequent loss of engine power.
- [NTSB WPR23LA084](https://openairdocs.org/ntsb/WPR23LA084.md): Cessna TP206A · Maricopa, AZ · Accident · No injuries · Class 3 · Limited · Final report · Dec 8, 2022 · N30WL · Substantial damage
  > A total loss of engine power due to fuel starvation. Contributing to the accident was the pilot’s improper fuel management.
- [NTSB CEN22LA341](https://openairdocs.org/ntsb/CEN22LA341.md): Cessna 421B · Riverdale, NE · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 16, 2022 · N21GF · Substantial damage
  > A total loss of engine power as a result of fuel exhaustion.
- [NTSB ERA22LA317](https://openairdocs.org/ntsb/ERA22LA317.md): Cessna T210F · Monticello, NY · Accident · No injuries · Class 3 · Limited · Final report · Jul 15, 2022 · N6195R · Destroyed
  > Maintenance personnel’s improper torque of the engine through-bolts during maintenance, which resulted in a bearing shift, oil starvation, and a total loss of engine power.
- [NTSB CEN22FA042](https://openairdocs.org/ntsb/CEN22FA042.md): Cessna T310R · Chadron, NE · Accident · 3 fatal · Class 3 · Field · Final report · Nov 22, 2021 · N310JA · Destroyed
  > The incapacitating effects of a myocardial infarction (heart attack), which resulted in the pilot's loss of airplane control and impact with terrain.
- [NTSB CEN21LA341](https://openairdocs.org/ntsb/CEN21LA341.md): Cessna T210F · Peyton, CO · Accident · No injuries · Class 4 · Limited · Final report · Jul 27, 2021 · N6162R · Substantial damage
  > The pilot’s fuel mismanagement that resulted in a complete loss of engine power during climb and subsequent impact with terrain during a forced landing.
- [NTSB WPR21LA285](https://openairdocs.org/ntsb/WPR21LA285.md): Cessna T210 · Missoula, MT · Accident · No injuries · Class 4 · Limited · Final report · Jul 9, 2021 · N6856R · Substantial damage
  > The pilot's failure to extend the landing gear during landing. Contributing to the accident was the pilot’s failure to use a pre-landing checklist.
- [NTSB ERA19FA283](https://openairdocs.org/ntsb/ERA19FA283.md): Cessna 421 · Deland, FL · Accident · 3 fatal · Class 3 · Field · Final report · Sep 29, 2019 · N731PF · Destroyed
  > The pilot’s failure to maintain control of the airplane, which resulted in a collision with terrain. Contributing was the pilot’s lack of training and experience in the accident airplane make and model.
- [NTSB CEN19FA323](https://openairdocs.org/ntsb/CEN19FA323.md): Beech V35 · London, OH · Accident · 1 fatal · Class 3 · Field · Final report · Sep 18, 2019 · N5438U · Destroyed
  > The pilot’s exceedance of the airplane’s critical angle of attack while maneuvering toward the final leg of the traffic pattern and facing the rising sun, which resulted in a subsequent aerodynamic stall at too low an altitude to recover.
- [NTSB CEN19FA100](https://openairdocs.org/ntsb/CEN19FA100.md): Cessna 421 · Plain City, OH · Accident · 1 fatal · Class 2 · Field · Final report · Mar 17, 2019 · N424TW · Destroyed
  > A loss of airspeed indication due to icing of the airplane's pitot probe, and the pilot's loss of control while maneuvering.
- [NTSB GAA18CA390](https://openairdocs.org/ntsb/GAA18CA390.md): Cessna 421 · Clifton, TX · Accident · No injuries · Data collection · Final report · Jul 1, 2018 · N7625Q · Substantial damage
  > The pilot's improper landing flare in crosswind conditions, which resulted in a hard landing.
- [NTSB ERA18WA159](https://openairdocs.org/ntsb/ERA18WA159.md): Cessna 421B · Rock Sound, Bahamas · Accident · 3 fatal · Foreign investigation · Jun 5, 2018 · N421MM · Destroyed
- [NTSB WPR17LA131](https://openairdocs.org/ntsb/WPR17LA131.md): Cessna 421B · Carlsbad, CA · Accident · No injuries · Class 3 · Limited · Final report · Jun 22, 2017 · N380AL · Substantial damage
  > The right main landing gear collapse for undetermined reasons.
- [NTSB ERA17FA118](https://openairdocs.org/ntsb/ERA17FA118.md): Cessna 421 · Canton, GA · Accident · 1 fatal · Field investigation · Final report · Mar 4, 2017 · N421KL · Substantial damage
  > The pilot's failure to maintain control of the airplane during a night visual landing approach. Contributing to the accident was the pilot's impairment due to his use of a combination of medications.
- [NTSB CEN16LA323](https://openairdocs.org/ntsb/CEN16LA323.md): Cessna TU206C · Skiatook, OK · Accident · Minor injuries · Limited investigation · Final report · Aug 13, 2016 · N29225 · Substantial damage
  > A total loss of engine power after takeoff for reasons that could not be determined based on the available information.
- [NTSB GAA16CA042](https://openairdocs.org/ntsb/GAA16CA042.md): Cessna 421 · Amarillo, TX · Accident · No injuries · Data collection · Final report · Oct 14, 2015 · N19CH · Substantial damage
  > The loss of directional control during taxi to the runway as a result of insufficient brake fluid level in the right brake master cylinder, resulting in a taxiway excursion and collision with a drainage culvert.
- [NTSB WPR16LA008](https://openairdocs.org/ntsb/WPR16LA008.md): Cessna T210K · Boise, ID · Accident · No injuries · Limited investigation · Final report · Oct 13, 2015 · N8273M · Substantial damage
  > The pilot’s improper in-flight fuel management due to distraction and self-induced pressure, which resulted in fuel starvation and a total loss of engine power. Contributing to the accident was the pilot’s failure to conduct the descent checklist, which…
- [NTSB CEN14CA310](https://openairdocs.org/ntsb/CEN14CA310.md): Cessna 421A · Dallas, TX · Accident · No injuries · Data collection · Final report · May 24, 2014 · N936U · Substantial damage
  > The improper rigging of the landing gear by maintenance personnel, which resulted in the landing gear collapse.
- [NTSB CEN14LA256](https://openairdocs.org/ntsb/CEN14LA256.md): Cessna 421 · Horseshoe Bay, TX · Accident · No injuries · Limited investigation · Final report · Apr 22, 2014 · N866BS · Substantial damage
  > The failure of the drive mechanism for the gearbox motor, which resulted in the gear not extending for the landing.
- [NTSB ERA14LA170](https://openairdocs.org/ntsb/ERA14LA170.md): Cessna 421 · Charleston, SC · Accident · No injuries · Limited investigation · Final report · Mar 20, 2014 · N5929M · Substantial damage
  > Inadequate maintenance, which resulted in the collapse of the right main landing gear during landing.
- [NTSB CEN13FA352](https://openairdocs.org/ntsb/CEN13FA352.md): Aero Commander 685 · Victoria, TX · Accident · Serious injuries · Field investigation · Final report · Jun 15, 2013 · N74CP · Substantial damage
  > Maintenance personnel's failure to secure the left engine idler pin during overhaul, which resulted in a catastrophic engine failure and subsequent forced landing.
- [NTSB WPR13FA037](https://openairdocs.org/ntsb/WPR13FA037.md): Cessna 421C · Shaver Lake, CA · Accident · 2 fatal · Field investigation · Final report · Nov 11, 2012 · N700EM · Substantial damage
  > The pilot's failure to regain airplane control following a sudden rapid descent during cruise, which resulted in an in-flight breakup. Contributing to the accident was the pilot's decision to make the flight with a failed vacuum pump, particularly at high…
- [NTSB CEN13FA039](https://openairdocs.org/ntsb/CEN13FA039.md): Cessna 320E · San Marcos, TX · Accident · 1 fatal · Field investigation · Final report · Nov 1, 2012 · N10PM · Substantial damage
  > The non-instrument-rated pilot’s decision to takeoff in night instrument meteorological conditions, which resulted in spatial disorientation and a loss of control.
- [NTSB ERA12LA589](https://openairdocs.org/ntsb/ERA12LA589.md): Cessna 421B · Selma, AL · Accident · No injuries · Limited investigation · Final report · Sep 29, 2012 · N1537T · Substantial damage
  > The pilot’s improper fuel management, which resulted in a total loss of engine power on the right engine and a partial loss of engine power on the left engine due to fuel starvation.
- [NTSB CEN12FA606](https://openairdocs.org/ntsb/CEN12FA606.md): Cessna 421B · Fort Worth, TX · Accident · Serious injuries · Field investigation · Final report · Sep 5, 2012 · N69924 · Substantial damage
  > The pilot's failure to maintain airplane control on takeoff, which resulted in an inadvertent stall. Contributing to the accident were the unlatched nose cargo door, the pilot’s diverted attention, and the pilot's mental ability to handle the emergency…
- [NTSB CEN12CA104](https://openairdocs.org/ntsb/CEN12CA104.md): Cessna 421B · Pampa, TX · Accident · No injuries · Data collection · Final report · Dec 9, 2011 · N421CE · Substantial damage
  > The pilot's inadequate aircraft control during landing, which resulted in a hard landing.
- [NTSB WPR10CA409](https://openairdocs.org/ntsb/WPR10CA409.md): Cessna TP206B · Saint Maries, ID · Accident · No injuries · Data collection · Final report · Aug 18, 2010 · N8611Z · Substantial damage
  > A loss of aircraft control during takeoff due to an inadvertent collision with a deer that ran onto the runway.
- [NTSB CEN10FA382](https://openairdocs.org/ntsb/CEN10FA382.md): Cessna 421 · Tulsa, OK · Accident · 3 fatal · Field investigation · Final report · Jul 11, 2010 · N88DF · Substantial damage
  > The pilot’s inadequate preflight fuel planning and management in-flight, which resulted in total loss of engine power due to fuel exhaustion. Contributing to the accident was the pilot’s use of performance-impairing medications.
- [NTSB CEN10MA367](https://openairdocs.org/ntsb/CEN10MA367.md): Cessna 421B · Alpine, TX · Accident · 5 fatal · Major investigation · Final report · Jul 4, 2010 · N31AS · Substantial damage
  > The degraded performance of the airplane due to the pilot not properly setting the flaps and retracting the landing gear after takeoff. Contributing to the accident was the pilot’s fatigue.
- [NTSB WPR10LA002](https://openairdocs.org/ntsb/WPR10LA002.md): Cessna 421B · San Simeon, CA · Accident · No injuries · Limited investigation · Final report · Oct 3, 2009 · N31KT · Substantial damage
  > The pilot's failure to follow the manufacturer’s checklist and set the parking brake.
- [NTSB WPR09CA478](https://openairdocs.org/ntsb/WPR09CA478.md): Cessna T210J · Albany, OR · Accident · No injuries · Data collection · Final report · Sep 14, 2009 · N899KM · Substantial damage
  > The malfunction of the left main wheel brake during landing due to inadequate hydraulic fluid in the left brake pedal master cylinder due to leakage.
- [NTSB WPR09FA258](https://openairdocs.org/ntsb/WPR09FA258.md): Cessna 320D · Fallon, NV · Accident · 4 fatal · Field investigation · Final report · May 23, 2009 · N320KP · Substantial damage
  > The pilot’s inadequate airspeed, which resulted in an aerodynamic stall.
- [NTSB CEN09LA284](https://openairdocs.org/ntsb/CEN09LA284.md): Cessna 421B · Alpine, TX · Accident · Minor injuries · Limited investigation · Final report · May 8, 2009 · N60HG · Substantial damage
  > The loss of engine power due to disengagement of the magneto idler gear support pin.
- [NTSB ERA09FA248](https://openairdocs.org/ntsb/ERA09FA248.md): Cessna 421B · Oakland Park, FL · Accident · 1 fatal · Field investigation · Final report · Apr 17, 2009 · N1935G · Substantial damage
  > The pilot's failure to maintain aircraft control and secure the right engine during an emergency return to the airport after takeoff. Contributing to the accident was an in-flight fire of the right engine for undetermined reasons.
- [NTSB WPR09CA017](https://openairdocs.org/ntsb/WPR09CA017.md): Piper L-4 · Buckeye, AZ · Accident · No injuries · Data collection · Final report · Oct 19, 2008 · N87117 · 2 aircraft · Substantial damage
  > Another airplanes total loss of wheel brakes while taxing which resulted in the pilot of the other aircraft colliding with a standing aircraft. Contributing to the accident was the other airplanes low brake hydraulic fluid.
- [NTSB DFW08RA232](https://openairdocs.org/ntsb/DFW08RA232.md): Cessna 421B · Ojinaga, Mexico · Accident · 4 fatal · Class 5 · Foreign · Sep 15, 2008 · N7560Q · Substantial damage
  > On September 15, 2008, approximately 1318 central daylight time, a United States registered Cessna 421B, N7560Q, was substantially damaged after it collided with mountainous terrain approximately 28 miles northwest of Ojinaga, Mexico, near the border town of…
- [NTSB LAX08LA251](https://openairdocs.org/ntsb/LAX08LA251.md): Cessna TU206E · Murrieta, CA · Accident · No injuries · Limited investigation · Final report · Jul 31, 2008 · N1499M · Substantial damage
  > A malfunction of the flight control system and loss of engine power for undetermined reasons.
- [NTSB NYC08LA204](https://openairdocs.org/ntsb/NYC08LA204.md): Cessna 421C · Greenville, NC · Accident · Minor injuries · Limited investigation · Final report · Jun 2, 2008 · N49DD · Substantial damage
  > The malfunction and premature retraction of the landing gear for undetermined reasons.
- [NTSB SEA07CA224](https://openairdocs.org/ntsb/SEA07CA224.md): Cessna 421B · Oceanside, CA · Accident · No injuries · Data collection · Final report · Aug 8, 2007 · N968J · Substantial damage
  > The collapse of the right main landing gear during the landing roll for undetermined reason, which resulted in a loss of directional control and collision with a fence.
- [NTSB CHI07LA154](https://openairdocs.org/ntsb/CHI07LA154.md): Cessna 421 · Chesterfield, MO · Accident · Serious injuries · Limited investigation · Final report · May 23, 2007 · N4082L · Substantial damage
  > Maintenance personnel failed to comply with an Airworthiness Directive which resulted in the total failure of the starter adapter gear teeth and the crankshaft gear teeth and the pilot failed to follow the published emergency procedures. Contributing to the…
- [NTSB SEA07LA055](https://openairdocs.org/ntsb/SEA07LA055.md): Cessna 421 · Pocatello, ID · Accident · No injuries · Limited investigation · Final report · Jan 30, 2007 · N4584L · Substantial damage
  > The separation of the bolt that attaches the elevator trim tab actuator rod to the elevator trim tab horn, resulting in violent flutter of the elevator, and eventually to the separation of the inboard half of the right elevator.

Next page: https://openairdocs.org/ntsb.md?engine=17035&page=2

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url
FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1
WHERE c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('17035'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=17035

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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.
