# NTSB investigations: Cessna 421C: In flight encounter with weather 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 SEA06FA147](https://openairdocs.org/ntsb/SEA06FA147.md): Cessna 421C · Carson, WA · Accident · 1 fatal · Field investigation · Final report · Jan 25, 2006 · N69KM · Destroyed > The pilot's failure to maintain aircraft control while maneuvering. Icing conditions, clouds and the pilot's continued flight into known adverse weather were factors. - [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 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 CHI96FA017](https://openairdocs.org/ntsb/CHI96FA017.md): Cessna 421C · Battle Creek, MI · Accident · 1 fatal · Field investigation · Final report · Oct 22, 1995 · N421TV · Destroyed > the pilot's decision to fly in adverse weather (icing) conditions; the accumulation of airframe ice; and the pilot's failure to maintain adequate airspeed for the situation, which resulted in a loss of aircraft control. The icing condition was a related… - [NTSB FTW95FA130](https://openairdocs.org/ntsb/FTW95FA130.md): Cessna 421C · El Prado, NM · Accident · 4 fatal · Field investigation · Final report · Mar 5, 1995 · N421BL · Destroyed > The pilot's decision to continue flight into known adverse weather conditions and the ensuing inadvertent stall due to airframe ice. Factors were the weather conditions. - [NTSB ATL92FA039](https://openairdocs.org/ntsb/ATL92FA039.md): Cessna 421C · Atlantic Ocean (Atlantic Ocean) · Accident · 5 fatal · Field investigation · Final report · Jan 13, 1992 · N40JK · Destroyed > The pilot's inadequate weather evaluation, and his continued flight into known adverse weather conditions. Factors were: the improper weather briefing by a flight service station specialist, and level iii thunderstorms. - [NTSB DEN91FA056](https://openairdocs.org/ntsb/DEN91FA056.md): Cessna 421C · Cortez, CO · Accident · 5 fatal · Field investigation · Final report · Mar 29, 1991 · N3851C · Destroyed > The pilot's improper IFR procedures. Factors were: the existing weather conditions and the pilot's failure to obtain a preflight briefing. - [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 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 SEA86LA024](https://openairdocs.org/ntsb/SEA86LA024.md): Cessna 421C · Idaho Falls, ID · Accident · No injuries · Limited investigation · Final report · Nov 16, 1985 · N124RS · Substantial damage > During initial apch inflight icing was encountered. The windscreen failed to heat due to an inoperative inverter. A small area on the right bottom portion of the windscreen de-iced due to defrost heat. The plt elected to land using the small clear area of the… - [NTSB FTW85LA080](https://openairdocs.org/ntsb/FTW85LA080.md): Cessna 421C · Vancourt, TX · Accident · No injuries · Limited investigation · Final report · Dec 17, 1984 · N6865D · Substantial damage > After a complete wx brf the plt departed into known IFR cond well below apch min at the dest arpt with inadequate fuel reserves and no field alternate. After 2 missed apchs the plts desired alternate was below minimums. En route to a second alternate airport… - [NTSB DEN84MA247](https://openairdocs.org/ntsb/DEN84MA247.md): Cessna 421C · Fort Lupton, CO · Accident · 3 fatal · Major investigation · Final report · Aug 1, 1984 · N6231G · Destroyed > During a preflt wx briefing, the plt was advised of thunderstorms & intense rain showers on the route of flt. However, he filed an IFR flt plan & took off. During flt, the ATC controller advised the plt of a level 6 cell ahead & noted that he had no report on… ## 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.aircraft_model_code IN ('2076016', '2076017') AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 240)) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb?model=2076016&occurrence=240 --- 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.