NTSB investigations: Piper PA-20, 1991
9 cases on aircraft the registry lists as Piper PA-20. 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
| 1964 | 25 |
|---|---|
| 1965 | 26 |
| 1966 | 23 |
| 1967 | 15 |
| 1968 | 16 |
| 1969 | 15 |
| 1970 | 14 |
| 1971 | 14 |
| 1972 | 11 |
| 1973 | 11 |
| 1974 | 9 |
| 1975 | 13 |
| 1976 | 6 |
| 1977 | 12 |
| 1978 | 7 |
| 1979 | 4 |
| 1980 | 3 |
| 1981 | 2 |
| 1982 | 6 |
| 1983 | 7 |
| 1984 | 3 |
| 1985 | 10 |
| 1986 | 1 |
| 1987 | 3 |
| 1988 | 3 |
| 1989 | 4 |
| 1990 | 1 |
| 1991 | 9 |
| 1992 | 5 |
| 1993 | 3 |
| 1994 | 2 |
| 1995 | 4 |
| 1996 | 3 |
| 1997 | 1 |
| 1998 | 5 |
| 2000 | 5 |
| 2001 | 1 |
| 2002 | 2 |
| 2003 | 5 |
| 2004 | 5 |
| 2005 | 4 |
| 2006 | 2 |
| 2007 | 1 |
| 2008 | 3 |
| 2009 | 5 |
| 2010 | 4 |
| 2011 | 2 |
| 2012 | 2 |
| 2013 | 2 |
| 2014 | 1 |
| 2015 | 2 |
| 2016 | 1 |
| 2017 | 1 |
| 2018 | 2 |
| 2019 | 2 |
| 2020 | 2 |
| 2021 | 2 |
| 2022 | 2 |
| 2025 | 2 |
| 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\") = 1991
AND c.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('7102002'))
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") = 1991
AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('7102002'))
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 MIA92LA038Accident · No injuriesLimited investigationFinal reportPiper PA-20 · Hilliard, FLPartial loss of engine power due to undetermined reasons and unsuitable terrain encountered during the forced landing. Contributing to the accident was the low ceiling encountered and reduced in-flight planning decision time by the pilot-in-command.NTSB ANC92LA016Accident · No injuriesLimited investigationFinal reportPiper PA-20 · Stebbins, AKThe pilot's failure to adequately compensate for the wind during landing. Factors were the crosswind and the attempted go aroundNTSB CHI91LA271Accident · No injuriesLimited investigationFinal reportPiper PA-20 · Saginaw, MIDirectional control was not maintained by the pilot which resulted in a ground loop. A factor related to the accident was a crosswind.NTSB ANC91LA120Accident · No injuriesLimited investigationFinal reportPiper PA-20 · Eureka, AKThe pilot-in-command's failure to mantain directional control of the airplane during the takeoff roll. Contributing to the accident was the crosswind.NTSB SEA91LA182Accident · 2 fatalLimited investigationFinal reportPiper PA-20 · Ione, WAInadequate clearance. A factor to the accident was: poor inflight planning.NTSB SEA91LA180Accident · No injuriesLimited investigationFinal reportPiper PA-20 · Chehalis, WAThe pilot's failure to maintain proper runway alignment. Factors include gusty winds and crosswinds.NTSB ANC91LA158Accident · No injuriesLimited investigationFinal reportPiper PA-20 · Naknek, AKThe loss of control during the takeoff sequence caused by the failure of the tail wheel steering spring. Factors contributing to the accident were the gusty wind conditions and soft terrain.NTSB CHI91LA123Accident · No injuriesLimited investigationFinal reportPiper PA-20 · Grand Marais, MNFailure of the pilot to maintain directional control. The crosswind and snow covered runway were related factors.NTSB ANC91DAG01Accident · No injuriesFinal reportPiper PA-20 · Anchorage, AKThe student pilot's failure to maintain aircraft control.