# NTSB investigations: Classic WACO YMF, AZ

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 LAX05LA002](https://openairdocs.org/ntsb/LAX05LA002.md): Classic Waco YMF · Sedona, AZ · Accident · No injuries · Limited investigation · Final report · Oct 2, 2004 · N43064 · Substantial damage
  > a loss of engine power due to the fatigue fracture of the number 7 cylinder exhaust rocker arm as a result of a grinding operation during manufacture.
- [NTSB LAX98LA165](https://openairdocs.org/ntsb/LAX98LA165.md): Waco YMF · Sedona, AZ · Accident · Serious injuries · Limited investigation · Final report · May 19, 1998 · N43064 · Minor damage
  > The failure of the pilot to secure the ignition system and magnetos in the off position before asking the ground crewman to rotate the propeller.
- [NTSB LAX97LA261](https://openairdocs.org/ntsb/LAX97LA261.md): Classic Waco YMF · Sedona, AZ · Accident · No injuries · Limited investigation · Final report · Jul 26, 1997 · N369BP · Substantial damage
  > A partial loss of engine power due to a loose rocker arm adjustment nut on the number 6 cylinder. The loose adjustment nut was due to inadequate maintenance adjustment performed by the engine manufacturer.
- [NTSB LAX91LA271](https://openairdocs.org/ntsb/LAX91LA271.md): Classic YMF · Bullhead City, AZ · Accident · No injuries · Limited investigation · Final report · Jun 22, 1991 · N7P · Substantial damage
  > Excessive brake application by the pilot in command. A contributing factor in the accident was the wind gusts.

## 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."eventStateOrRegion" = 'AZ' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('2240101'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=2240101&state=AZ

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