# NTSB investigations: Continental GTSIO-520 series 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. ## Latest cases - [NTSB ERA26LA314](https://openairdocs.org/ntsb/ERA26LA314.md): Cessna 421 · Fulton, KY · Accident · Serious injuries · Class 4 · Limited · Final report · Aug 21, 2026 · N28RH · Substantial damage > The misfuelling of the airplane by the refueler. Contributing to the accident was the pilot’s failure to verify that the airplane had been properly fueled prior to departing on the accident flight. - [NTSB WPR24FA289](https://openairdocs.org/ntsb/WPR24FA289.md): Cessna 421C · Fairview, OR · Accident · 3 fatal · Class 3 · Field · Preliminary report · Aug 31, 2024 · N421GP · Substantial damage > On August 31, 2024, about 1030 Pacific daylight time, a Cessna 421C, N421GP was destroyed when it was involved in an accident near Fairview, Oregon. The two pilots and one person on the ground were fatally injured. The airplane was operated as a Title 14 Code… - [NTSB GAA24WA258](https://openairdocs.org/ntsb/GAA24WA258.md): Cessna 421C · Tofino, Canada · Accident · 3 fatal · Class 5 · Foreign · Jul 18, 2024 · N264DC - [NTSB CEN24LA061](https://openairdocs.org/ntsb/CEN24LA061.md): Cessna 421C · McGregor, TX · Accident · No injuries · Class 3 · Limited · Final report · Dec 8, 2023 · N146TJ · Substantial damage > The failure of the spring pin in the right propeller governor, which precluded the pilot from controlling the propeller pitch to maintain engine rpm, resulting in a loss of engine thrust, excessive drag, and the subsequent forced landing to a field. - [NTSB ERA23LA180](https://openairdocs.org/ntsb/ERA23LA180.md): Cessna 421C · Leesburg, VA · Accident · No injuries · Class 4 · Limited · Final report · Apr 5, 2023 · N880JS · Substantial damage > Separation of the left man landing gear scissor hardware, which resulted in a loss of directional control and subsequent runway excursion during landing. - [NTSB WPR21FA270](https://openairdocs.org/ntsb/WPR21FA270.md): Cessna 421C · Monterey, CA · Accident · 2 fatal · Class 3 · Field · Final report · Jul 13, 2021 · N678SW · Destroyed > The pilot’s failure to maintain airplane control due to spatial disorientation during an instrument departure procedure in instrument meteorological conditions which resulted in a collision with terrain. Contributing to the accident was the pilot’s lack of… - [NTSB CEN21LA315](https://openairdocs.org/ntsb/CEN21LA315.md): Cessna 421C · Longmont, CO · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 10, 2021 · N66NC · Substantial damage > The loss of performance for reasons that could not be determined. - [NTSB GAA19CA335](https://openairdocs.org/ntsb/GAA19CA335.md): Cessna 421 · Moriarty, NM · Accident · No injuries · Data collection · Final report · Jun 9, 2019 · N421WL · Substantial damage > The pilot's improper landing flare in gusting wind conditions, which resulted in a hard landing. - [NTSB CEN19FA082](https://openairdocs.org/ntsb/CEN19FA082.md): Cessna 421 · Canadian, TX · Accident · 2 fatal · Class 2 · Field · Final report · Feb 15, 2019 · N421NS · Destroyed > The pilot's failure to maintain control of the airplane while in instrument meteorological conditions with icing conditions present, which resulted in an aerodynamic stall and spin into terrain. - [NTSB GAA17CA058](https://openairdocs.org/ntsb/GAA17CA058.md): Beech 58TC · Valdosta, GA · Accident · No injuries · Data collection · Final report · Nov 5, 2016 · N2CH · Substantial damage > The pilot’s failure to ensure that adequate fuel was onboard for the flight, which resulted in fuel exhaustion and the loss of engine power. - [NTSB WPR16LA092](https://openairdocs.org/ntsb/WPR16LA092.md): Cessna 421C · Death Valley, CA · Accident · No injuries · Limited investigation · Final report · Apr 13, 2016 · N21SG · Substantial damage > A runway overrun for reasons that could not be determined based on the available information. - [NTSB WPR13LA214](https://openairdocs.org/ntsb/WPR13LA214.md): Cessna 421A · Oakland, CA · Accident · No injuries · Limited investigation · Final report · May 1, 2013 · N216WA · Substantial damage > A failure of the left main landing gear pivot bolt in overstress during landing. - [NTSB CEN10LA166](https://openairdocs.org/ntsb/CEN10LA166.md): Cessna 421B · Artesia, NM · Accident · No injuries · Limited investigation · Final report · Mar 18, 2010 · N3382Q · Substantial damage > A loss of engine power due to fuel starvation as a result of the pilot's improper fuel management. - [NTSB NYC05LA116](https://openairdocs.org/ntsb/NYC05LA116.md): Cessna 421B · Medina, OH · Accident · No injuries · Limited investigation · Final report · Jul 7, 2005 · N318RF · Substantial damage > An overload failure of the left main landing gear attachment assembly. - [NTSB FTW04FA243](https://openairdocs.org/ntsb/FTW04FA243.md): Cessna 421C · Bee Caves, TX · Accident · 2 fatal · Field investigation · Final report · Sep 23, 2004 · N729DM · Destroyed > The pilot's improper positioning of the fuel selector valves, which resulted in a loss of power to the left engine due to fuel exhaustion. After the power loss, the pilot failed to follow checklist procedures and did not secure (feather) the left propeller,… - [NTSB DEN03FA025](https://openairdocs.org/ntsb/DEN03FA025.md): Cessna 421 · Akron, CO · Accident · 2 fatal · Field investigation · Final report · Dec 25, 2002 · N421D · Destroyed > The fractured connecting rods and the pilot not maintaining aircraft control following the engine failure. Factors contributing to the accident were the low altitude, the pilot not maintaining minimum controllable airspeed following the engine failure, the… - [NTSB NYC02LA190](https://openairdocs.org/ntsb/NYC02LA190.md): Cessna 421 · Ithaca, NY · Accident · No injuries · Limited investigation · Final report · Sep 15, 2002 · N23RL · Substantial damage > The pilot's failure to maintain directional control during the landing roll. A factor in the accident was the wet runway. - [NTSB CHI02LA100](https://openairdocs.org/ntsb/CHI02LA100.md): Piper PA-46-310P · Hastings, MN · Accident · No injuries · Limited investigation · Final report · Apr 7, 2002 · N9184F · Substantial damage > The engine failure due to oil starvation as a result of the fatigue fracture of the number 6 piston. Additional factors were the unsuitable terrain for landing encountered by the pilot, and the inadequate piston design by the manufacturer. - [NTSB FTW01LA186](https://openairdocs.org/ntsb/FTW01LA186.md): Cessna 421B · New Braunfels, TX · Accident · No injuries · Limited investigation · Final report · Aug 17, 2001 · N5286Z · Substantial damage > the pilot's inadequate flare of the airplane resulting in a hard landing. A contributing factor was the crosswind. - [NTSB MIA01FA140](https://openairdocs.org/ntsb/MIA01FA140.md): Cessna 404 · Pena Pobre, PR · Accident · 1 fatal · Field investigation · Final report · May 13, 2001 · N404BA · Destroyed > failure of the pilot-in-command to maintain altitude/clearance, resulting in an in-flight collision with rising terrain. - [NTSB ATL01FA036](https://openairdocs.org/ntsb/ATL01FA036.md): Cessna 421 · Munford, AL · Accident · 5 fatal · Field investigation · Final report · Feb 14, 2001 · N5AY · Destroyed > The pilot continued visual flight into instrument weather conditions that resulted in the inflight collision with a river bank. Factors were reduced visibility and dark night. - [NTSB FTW99LA012](https://openairdocs.org/ntsb/FTW99LA012.md): Cessna 421C · Eagle Pass, TX · Accident · Minor injuries · Limited investigation · Final report · Oct 18, 1998 · N19MH · Destroyed > A downdraft, which exceeded the aircraft's climb performance. A factor was the thunderstorms in the vicinity of the airport. - [NTSB CHI98LA032](https://openairdocs.org/ntsb/CHI98LA032.md): Cessna 421A · Tomahawk, WI · Accident · No injuries · Limited investigation · Final report · Nov 7, 1997 · N2957Q · Substantial damage > the elevator trim tab bolt backed out, allowing the trim tab to flutter, and destroy the elevator. The factors involved were improper annual inspection by the maintenance personnel, and the inadequate aircraft preflight done by the pilot. - [NTSB LAX96LA296](https://openairdocs.org/ntsb/LAX96LA296.md): Cessna 421C · Avalon, CA · Accident · Serious injuries · Limited investigation · Final report · Aug 4, 1996 · N6209V · Substantial damage > the pilot's failure to initiate a go-around when a landing overshoot became apparent. Factors which contributed to the accident were: the pilot's excessive airspeed and misjudged distance during landing, his lack of flying experience in the Cessna, and… - [NTSB FTW96FA073](https://openairdocs.org/ntsb/FTW96FA073.md): Cessna 421C · Cleveland, OK · Accident · 6 fatal · Field investigation · Final report · Dec 21, 1995 · N421EP · Destroyed > the pilot's continued VFR flight into instrument meteorological conditions (IMC), and his failure to maintain control of the airplane after encountering adverse weather conditions, which resulted in a stall/spin. Factors relating to the accident were: pilot… - [NTSB LAX95FA319](https://openairdocs.org/ntsb/LAX95FA319.md): Cessna 421C · Beaver Dam, AZ · Accident · 8 fatal · Field investigation · Final report · Sep 2, 1995 · N6234G · Destroyed > Failure of the pilot to maintain adequate airspeed, while maneuvering on approach, which resulted in an inadvertent stall/spin and uncontrolled collision with terrain. Factors relating to the accident were: the pilot allowed the aircraft weight and balance… - [NTSB MIA95TA199](https://openairdocs.org/ntsb/MIA95TA199.md): Cessna 404 · Raiford, FL · Accident · No injuries · Final report · Aug 10, 1995 · N461MC · Substantial damage > The pilot's selection of unsuitable terrain for landing. - [NTSB LAX87FA306](https://openairdocs.org/ntsb/LAX87FA306.md): Cessna 421C · Clifton, AZ · Accident · No injuries · Field investigation · Final report · Aug 16, 1987 · N26596 · Destroyed > The flt deptd ry 25 at greenlee cty arpt, Clifton, AZ on a VFR flt to phoenix, AZ. The plt & gnd witnesses rptd that shortly after lift-off, grayish/white smoke emanated from the left engine. The plt was unable to feather the prop, circled the arpt abt 2… - [NTSB DEN87FA016](https://openairdocs.org/ntsb/DEN87FA016.md): Cessna 421C · Butte, MT · Accident · 1 fatal · Field investigation · Final report · Nov 6, 1986 · N421AR · Destroyed > Plt was attempting the vor-b instrument apch to Butte, MT arpt. Plt reported over the coppertown VORTAC inbound on the arpt. The procedure turn inbound course to the VORTAC is 124 degrees. The inbound course to the arpt is 094 degrees. The acft wreckage was… - [NTSB FTW85FA019](https://openairdocs.org/ntsb/FTW85FA019.md): Cessna 421C · Addison, TX · Accident · 1 fatal · Field investigation · Final report · Oct 18, 1984 · N121BT · Destroyed > Aprx 7 min after takeoff (at 1441), the plt declared an emergency & said the l eng had lost power. He feathered the eng,diverted back twd the arpt & dscndd to VFR conds below the clds. At 1448, the plt said he had the arpt in sight & turnedonto a left… - [NTSB CHI84LA135](https://openairdocs.org/ntsb/CHI84LA135.md): Cessna 421C · Joliet, IL · Accident · No injuries · Limited investigation · Final report · Mar 21, 1984 · N260RA · Substantial damage > The acft picked up moderate to severe icing which the pilot thought he had shaken off as he cycled the deice boots. He saw the ice come off of the wings but could not see the horizontal stabilizer. On short final at 100 KTS the control yoke began vibrating.… - [NTSB DEN76DTM32](https://openairdocs.org/ntsb/DEN76DTM32.md): Cessna T210L · Navajo Mtn, UT · Accident · No injuries · Closed · May 30, 1976 · N2239S · Substantial damage - [NTSB DEN74DTC32](https://openairdocs.org/ntsb/DEN74DTC32.md): Cessna 421B · Jeffrey City, WY · Accident · No injuries · Closed · Apr 26, 1974 · N5962M · Substantial damage ## 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 ('17046', '17039')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb?engine=17046 --- 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.