NTSB investigations: Jacobs L4 /R755-7
11 cases on aircraft whose registry engine model is Jacobs L4 /R755-7, where the defining event was Loss of control on ground. 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
| 2009 | 2 |
|---|---|
| 2010 | 1 |
| 2013 | 1 |
| 2016 | 2 |
| 2018 | 1 |
| 2021 | 1 |
| 2024 | 2 |
| 2025 | 1 |
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 c.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('35003')
AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e WHERE e.case_mkey = x.case_mkey AND e.aircrafts_position = x.position AND e.\"isDefiningEvent\" AND e.\"tier2Number\" = '230'))
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 c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('35003')
AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e WHERE e.case_mkey = x.case_mkey AND e.aircrafts_position = x.position AND e."isDefiningEvent" AND e."tier2Number" = '230'))
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 WPR25LA125Accident · No injuriesClass 4 · LimitedFinal reportCessna 190 · Idaho Falls, IDThe pilot’s failure to maintain directional control during the landing roll in crosswind conditions.NTSB ERA25LA036Accident · Minor injuriesClass 4 · LimitedFinal reportCessna 195A · Bethel, PAThe pilot’s failure to maintain directional control during landing.NTSB CEN24LA280Accident · No injuriesClass 4 · LimitedFinal reportCessna 195A · Greenville, MIThe pilot’s loss of directional control during landing which led to a ground-loop.NTSB CEN21LA422Accident · No injuriesClass 4 · LimitedFinal reportCessna 195 · Ypsilanti, MIThe pilot’s failure to maintain directional control during taxi, which resulted in a ground loop.NTSB GAA18CA332Accident · No injuriesData collectionFinal reportWaco YKS 7 · Fairhope, ALThe pilot’s failure to maintain directional control while landing.NTSB ERA16CA304Accident · No injuriesData collectionFinal reportCessna 195 · Livermore Falls, METhe pilot's failure to maintain directional control during landing roll out.NTSB GAA16CA238Accident · No injuriesData collectionFinal reportWaco YKS 7 · Millersburg, OHThe pilot's loss of directional control during landing in gusting wind conditions resulting in excessive brake application, and airplane nose over.NTSB WPR14CA083Accident · No injuriesData collectionFinal reportCessna 195A · Salinas, CAThe pilot's failure to maintain directional control during the landing roll, which resulted in a ground loop.NTSB CEN10CA213Accident · No injuriesData collectionFinal reportWaco YPF-7 · Houston, TXThe pilot's inability to maintain control during landing due to the failure of the tailwheel locking mechanism to remain engaged prior to landing.NTSB WPR09CA465Accident · No injuriesData collectionFinal reportCessna 195A · Upland, CAThe pilot's failure to maintain directional control of the airplane during the takeoff roll.NTSB ERA09CA350Accident · No injuriesData collectionFinal reportBeech C17B · Stevensville, MDThe pilot’s failure to maintain directional control of the airplane during the landing roll.