# NTSB investigations: Jacobs R755B series, 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 LAX06CA195](https://openairdocs.org/ntsb/LAX06CA195.md): Waco Classic YMF 5C · Holbrook, AZ · Accident · No injuries · Data collection · Final report · May 30, 2006 · N515TT · Substantial damage
  > the pilot's inadequate compensation for the crosswind condition and failure to maintain directional control of the airplane during landing, which resulted in a ground loop.
- [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 LAX98LA069](https://openairdocs.org/ntsb/LAX98LA069.md): Cessna 195A · Tucson, AZ · Accident · No injuries · Limited investigation · Final report · Jan 12, 1998 · N1073D · Substantial damage
  > The student's inadequate compensation for the wind conditions and his failure to maintain directional control. Factors in this accident were the inadequate supervision of the flight by the flight instructor, and the student's failure to relinquish the…
- [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.engine_model_code IN ('35007'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=35007&state=AZ

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OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.