NTSB investigations: Cessna 421C, 1983
5 cases on aircraft the registry lists as Cessna 421C. Aircraft are matched to the registry by N-number and event date, checked against the reported serial number, make and model, so older matches can be wrong.
Cases per year
| 1973 | 1 |
|---|---|
| 1977 | 2 |
| 1979 | 2 |
| 1980 | 2 |
| 1981 | 5 |
| 1982 | 1 |
| 1983 | 5 |
| 1984 | 4 |
| 1985 | 5 |
| 1986 | 5 |
| 1987 | 3 |
| 1988 | 2 |
| 1990 | 2 |
| 1991 | 3 |
| 1992 | 5 |
| 1993 | 1 |
| 1994 | 7 |
| 1995 | 8 |
| 1996 | 2 |
| 1997 | 2 |
| 1998 | 1 |
| 1999 | 4 |
| 2000 | 1 |
| 2001 | 1 |
| 2002 | 4 |
| 2003 | 3 |
| 2004 | 2 |
| 2005 | 4 |
| 2006 | 3 |
| 2007 | 1 |
| 2008 | 3 |
| 2009 | 3 |
| 2011 | 3 |
| 2012 | 5 |
| 2013 | 4 |
| 2014 | 1 |
| 2016 | 1 |
| 2017 | 4 |
| 2018 | 2 |
| 2019 | 1 |
| 2021 | 3 |
| 2022 | 2 |
| 2023 | 2 |
| 2024 | 5 |
| 2026 | 3 |
Where
Open the mapLatest cases
Query with SQL
duckdb -csv -c "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 year(c.\"eventDate\") = 1983
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"Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.
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 year(c."eventDate") = 1983
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" DESCRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
NTSB DEN84FA004Accident · No injuriesField investigationFinal reportCessna 421C · Center, COThe acft collided with a dirt bank after a left engine overspeed and loss of directional control during takeoff. The plthad already aborted one takeoff due to overboost and a sticking wastegate. The problem seemed corrected after work and lubrication by a…NTSB FTW83LA412Accident · No injuriesLimited investigationFinal reportCessna 421C · Port Lavaca, TXThe acft collided with a fence and bushes during takeoff. The rwy was shell and turf construction 2300 ft long. The plt figured the takeoff distance from a chart using dry hard surfaced level rwy. The acceleration seemed slow according to a witness and the…NTSB CHI83FA383Accident · Serious injuriesField investigationFinal reportCessna 421C · Centerto, INThe plt reported that during a climb after takeoff, he engaged the autopilot. While making an entry on a trip sheet, he felt a bump & noted that the acft had started to descend. He disengaged the autopilot & the nose pitched down violently. Reducing power had…NTSB DEN83LA081Accident · No injuriesLimited investigationFinal reportCessna 421C · Gunnison, COThe plt began taking off on rwy 06 with a wind from 190 deg at 8 KTS. He stated that max power & RPM were obtained. He noted that he obtained 39 inches of manifold pressure & 2235 RPM at 100 KTS IAS. Reportedly, the acft rotated properly, but began to vibrate…NTSB FTW83LA095Accident · No injuriesLimited investigationFinal reportCessna 421C · Houston, TXThe pilot stated that after a normal coupled ILS approach he broke out at about 250 ft AGL and 1/2 mile from the rwy. He disconnected the approach coupler and lined up with the rwy. He stated that during the transition from IFR to visual his rate of descent…