NTSB investigations: Classic WACO YMF
10 cases on aircraft the registry lists as Classic WACO YMF, where the first occurrence was “Loss of control - on ground/water”. 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
| 1989 | 1 |
|---|---|
| 1990 | 1 |
| 1991 | 1 |
| 1994 | 1 |
| 1997 | 2 |
| 2003 | 1 |
| 2004 | 2 |
| 2006 | 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.aircraft_model_code IN ('2240101')
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\" = 260))
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.aircraft_model_code IN ('2240101')
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" = 260))
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 NYC06LA134Accident · No injuriesLimited investigationFinal reportClassic Waco YMF · Hagerstown, MDThe pilot's failure to maintain directional control during takeoff.NTSB LAX05CA052Accident · No injuriesData collectionFinal reportClassic Waco YMF · Santa Barbara, CAThe pilot's inadequate compensation for the wind conditions and failure to maintain directional control during landing rollout, which resulted in a ground loop.NTSB NYC04CA190Accident · Serious injuriesData collectionFinal reportClassic Waco YMF · Bar Harbor, METhe pilot's inadequate compensation for wind conditions. A factor was the crosswind.NTSB MIA04CA034Accident · No injuriesData collectionFinal reportWaco 4MF 5 · Marathon, FLThe pilot's loss of directional control during landing rollout in a crosswind resulting in the airplane ground looping and incurring damage to the left wing.NTSB CHI97LA170Accident · No injuriesLimited investigationFinal reportWaco YMF · Longville, MNfailure of the pilot to maintain directional control of the airplane. Factors relating to the accident were: the gusty wind condition and the ditch.NTSB NYC97LA110Accident · No injuriesLimited investigationFinal reportWaco YMF · Ocean City, MDThe pilot's failure to maintain directional control and his improper compensation for the wind conditions. Contributing factors were the lack of recent experience in the airplane, and gusty wind conditions.NTSB CHI94LA192Accident · No injuriesLimited investigationFinal reportClassic YMF-5 · Noblesville, INthe pilot's excessive use of brakes. Factors related to the accident were the crosswind and the pilot's inadequate compensation for the wind conditions.NTSB CHI91LA277Accident · No injuriesLimited investigationFinal reportClassic YMF5 · Hart, MIFailure of the pilot to maintain directional control of the airplane during a takeoff ground run.NTSB MIA90LA098Accident · Minor injuriesLimited investigationFinal reportWaco YMF-5 · Marathon, FLFailure of the pilot to maintain directional control during takeoff, which resulted in an inadvertent ground swerve. Factors related to the accident were: the crosswind, the pilot's excessive compensation for the wind condition, and his lack of experience in…NTSB MIA90IA020Incident · No injuriesIncident investigationFinal reportClassic YMF-5 · Marathon, FLThe pilot's incorrect elevator control while taxiing with a quartering tailwind. Contributing to the incident was the tailwind condition.