# NTSB investigations: Mcdonnell Douglas Helicopter 600N, CA

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 WPR20LA228](https://openairdocs.org/ntsb/WPR20LA228.md): Md Helicopter 600 · San Andreas, CA · Accident · No injuries · Class 3 · Limited · Final report · Jul 20, 2020 · N745BW · Destroyed
  > The failure of the output shaft of the overrunning clutch inner race due to frictional overheating of the shaft, which resulted from the failure of the output bearing’s stainless-steel grease seal.
- [NTSB WPR14LA173](https://openairdocs.org/ntsb/WPR14LA173.md): Mcdonnell Douglas Helicopter 600N · Adelanto, CA · Accident · Serious injuries · Limited investigation · Final report · Apr 27, 2014 · N606BP · Substantial damage
  > The commercial pilot’s improper control inputs, which resulted in a loss of helicopter control during takeoff.
- [NTSB WPR09GA119](https://openairdocs.org/ntsb/WPR09GA119.md): Mcdonnell Douglas Helicopter 600 · San Clemente, CA · Accident · Serious injuries · Final report · Feb 20, 2009 · N608BP · Substantial damage
  > Failure of the engine’s number two bearing during cruise flight, which resulted in a loss of engine power.
- [NTSB LAX03GA001](https://openairdocs.org/ntsb/LAX03GA001.md): McDonnell Douglas 600N · Rialto, CA · Accident · Serious injuries · Final report · Oct 4, 2002 · N625SB · Substantial damage
  > an engine deceleration event due to a loose HMU fuel line fitting, which was a result of inadequate maintenance procedures in the 100/300-hour inspection. Also causal was the flying pilot's and pilot-in-command's delayed recognition of the power loss, as well…
- [NTSB LAX02IA013](https://openairdocs.org/ntsb/LAX02IA013.md): McDonnell Douglas 600N · Long Beach, CA · Incident · No injuries · Incident investigation · Final report · Oct 23, 2001 · N959SD · No damage
  > The fatigue failure of a 5/16-inch boom attach bolt was most probably caused by the angular misalignment between the tail boom bolt hole and the fuselage mounted nutplate.
- [NTSB LAX01TA092](https://openairdocs.org/ntsb/LAX01TA092.md): McDonnell Douglas 600N · San Diego, CA · Accident · No injuries · Final report · Feb 21, 2001 · N606BP · Substantial damage
  > The student pilot's improper use of the rotorcraft flight controls, and the instructor pilot's inadequate supervision of the maneuver.
- [NTSB LAX99TA115](https://openairdocs.org/ntsb/LAX99TA115.md): McDonnell Douglas 600N · Rialto, CA · Accident · Minor injuries · Final report · Mar 10, 1999 · N626SB · Substantial damage
  > The pilot's improper in-flight decision to maneuver in the area while observed inclement weather approached, which led to a loss of control. Contributing factors were the low ceilings, mountainous terrain and spatial disorientation.
- [NTSB LAX96LA207](https://openairdocs.org/ntsb/LAX96LA207.md): McDonnell Douglas MD-600 · Thermal, CA · Accident · No injuries · Limited investigation · Final report · May 28, 1996 · N600RN · Destroyed
  > inadequate design of the stress limits for cyclic control of the helicopter.

## 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" = 'CA' 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 ('3027377'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=3027377&state=CA

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