# NTSB investigations: Cessna 421C, CA 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 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 WPR17LA051](https://openairdocs.org/ntsb/WPR17LA051.md): Cessna 421C · Jackson, CA · Accident · No injuries · Limited investigation · Final report · Jan 7, 2017 · N71RC · Substantial damage > The failure of the right main landing gear torque link bolt in overstress, which resulted in the collapse of the landing gear during the landing roll. - [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 WPR13FA234](https://openairdocs.org/ntsb/WPR13FA234.md): Cessna 421C · Floriston, CA · Accident · 1 fatal · Field investigation · Final report · May 16, 2013 · N421W · Destroyed > The pilot's failure to maintain airplane control during descent while operating in instrument meteorological conditions. - [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 LAX04FA066](https://openairdocs.org/ntsb/LAX04FA066.md): Cessna 421C · Claremont, CA · Accident · 1 fatal · Field investigation · Final report · Dec 15, 2003 · N6887L · Destroyed > the pilot became lost/disoriented during the approach, failed to maintain course alignment with the missed approach procedure, and subsequently lost control of the airplane. - [NTSB LAX03LA106](https://openairdocs.org/ntsb/LAX03LA106.md): Cessna 421C · Crescent City, CA · Accident · No injuries · Limited investigation · Final report · Mar 5, 2003 · N26533 · Substantial damage > The separation of the upper and lower right main landing gear scissor links due to improper maintenance, which resulted in a ground loop, and the collapse of the right main landing gear during the landing roll. - [NTSB LAX01LA169](https://openairdocs.org/ntsb/LAX01LA169.md): Cessna 421C · Angwin, CA · Accident · Minor injuries · Limited investigation · Final report · May 9, 2001 · N26560 · Substantial damage > Right main landing gear brake lockup during landing rollout for undetermined reasons. - [NTSB LAX99FA310](https://openairdocs.org/ntsb/LAX99FA310.md): Cessna 421C · Santa Monica, CA · Accident · Minor injuries · Field investigation · Final report · Sep 23, 1999 · N26585 · Substantial damage > The failure of the pilot to establish and maintain a stabilized approach, which resulted in a hard landing and on-ground collision with the airport VASI display. - [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 LAX94FA257](https://openairdocs.org/ntsb/LAX94FA257.md): Cessna 421C · Carlsbad, CA · Accident · 2 fatal · Field investigation · Final report · Jun 15, 1994 · N421AG · Destroyed > A loss of engine power for undetermined reasons. The pilot's failure to raise the flaps and maintain altitude were factors in the accident. - [NTSB LAX93FA149](https://openairdocs.org/ntsb/LAX93FA149.md): Cessna 421C · Eagle Mountain, CA · Accident · 3 fatal · Field investigation · Final report · Mar 12, 1993 · N2656N · Destroyed > Failure of the left elevator for undetermined reason(s), which resulted in flutter and failure of the empennage, and subsequent uncontrolled collision with the terrain. - [NTSB LAX93LA051](https://openairdocs.org/ntsb/LAX93LA051.md): Cessna 421C · Santa Maria, CA · Accident · Serious injuries · Limited investigation · Final report · Nov 22, 1992 · N52AK · Destroyed > 1) The internal failure of the left engine, left magneto due to inadequate maintenance and non compliance with the manufacturers service bulletins and recommendations, and 2) the failure of the pilot to attain the proper touchdown point during the landing… - [NTSB LAX92FA082](https://openairdocs.org/ntsb/LAX92FA082.md): Cessna 421C · Mammoth Lakes, CA · Accident · 4 fatal · Field investigation · Final report · Jan 5, 1992 · N2654M · Destroyed > The failure of the pilot to plan and conduct his departure flight to avoid high mountainous terrain, during which the pilot became lost/disoriented. Contributing to the accident was self induced pressure to depart before the arrival of a snow storm. - [NTSB LAX92LA007](https://openairdocs.org/ntsb/LAX92LA007.md): Cessna 421C · Santa Monica, CA · Accident · No injuries · Limited investigation · Final report · Oct 5, 1991 · N5486G · 2 aircraft · Minor damage > The failure of the pilot of the other aircraft to maintain an adequate visual lookout while taxiing his aircraft. - [NTSB LAX90LA259](https://openairdocs.org/ntsb/LAX90LA259.md): Cessna 421C · Lancaster, CA · Accident · No injuries · Limited investigation · Final report · Jul 18, 1990 · N6089X · Substantial damage > The accident was eroded ignition spark plug electrodes and maintenance personnel neglecting to adjust spark plug electrodes and maintenance personnel neglecting to adjust spark plug gap. The rough terrain in which the aircraft landed was a factor in the… - [NTSB LAX88FA215](https://openairdocs.org/ntsb/LAX88FA215.md): Cessna 421C · Shaver Lake, CA · Accident · 4 fatal · Field investigation · Final report · May 29, 1988 · N98683 · Destroyed > Inflight encounter with forcasted severe icing and turbulence beyond the capability of either the aircraft or the pilot, which led to an inflgiht loss of control. Factors in the accident were the pilots lack of understanding of high altitude flight aspects… - [NTSB LAX86FA314](https://openairdocs.org/ntsb/LAX86FA314.md): Cessna 421C · Callahan, CA · Accident · 1 fatal · Field investigation · Final report · Aug 6, 1986 · N98998 · Destroyed > After dropping company executives off at medford, the pilot was to return to santa rosa empty. Witnesses along the 25 NM valley which ends at the accident site reported that the aircraft buzzed their locations at AGL altitudes variously described as '10 feet'… - [NTSB LAX81FVG67](https://openairdocs.org/ntsb/LAX81FVG67.md): Cessna 182Q · Placerville, CA · Accident · No injuries · Closed · Sep 27, 1981 · N96837 · 2 aircraft · Substantial damage - [NTSB LAX80FA049](https://openairdocs.org/ntsb/LAX80FA049.md): Riley 421C · Escondido, CA · Accident · 1 fatal · Closed · Feb 11, 1980 · N15SE · Destroyed ## 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."eventStateOrRegion" = 'CA' AND c."eventCountry" = 'USA' AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('2076016', '2076017')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb?model=2076016&state=CA --- 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.