# NTSB investigations, 2001: Rotor failure/malfunction

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 NYC02TA026](https://openairdocs.org/ntsb/NYC02TA026.md): Bell 407 · Whitley City, KY · Accident · Serious injuries · Final report · Nov 12, 2001 · N11HX · Substantial damage
  > The pilots decision to operate the helicopter at an airspeed in excess of the maximum demonstrated stable airspeed for the water bucket. A factor in the accident was the pilot did not follow the published emergency procedure.
- [NTSB NYC01LA168](https://openairdocs.org/ntsb/NYC01LA168.md): Bell 206B · Secaucus, NJ · Accident · No injuries · Limited investigation · Final report · Jul 10, 2001 · N3298G · Substantial damage
  > Under torque of a Thomas coupling self-locking nut for undetermined reasons, which resulted in the loss of the corresponding retaining bolt, and subsequent separation of tail rotor drive shaft segments. A factor was the unsuitable terrain beneath the pilot…
- [NTSB CHI01LA162](https://openairdocs.org/ntsb/CHI01LA162.md): Giackino Exec 162F · Manistique, MI · Accident · No injuries · Limited investigation · Final report · Jun 12, 2001 · N556DG · Substantial damage
  > The contamination of the main rotor drive belts causing them to slip. Factors were the low altitude, unsuitable terrain for the forced landing, and the water.
- [NTSB FTW01LA124](https://openairdocs.org/ntsb/FTW01LA124.md): Robinson R22 · Raymondville, TX · Accident · No injuries · Limited investigation · Final report · May 18, 2001 · N7087X · Substantial damage
  > the failure of the main rotor drive belts while maneuvering which resulted in a loss of main rotor drive. A contributing factor was the lack of suitable terrain for the forced landing.
- [NTSB CHI01LA141](https://openairdocs.org/ntsb/CHI01LA141.md): Parker Rotorway 162F · Minneapolis, MN · Accident · No injuries · Limited investigation · Final report · May 16, 2001 · N311RM · Substantial damage
  > The tail rotor drive belt coming off in cruise flight and it not being possible for the student pilot to maintain aircraft control during the emergency landing attempt. Factors relating to the accident were the loose bearing in the secondary drive unit to the…
- [NTSB FTW01LA087](https://openairdocs.org/ntsb/FTW01LA087.md): Bell 47G2 · Ardmore, OK · Accident · No injuries · Limited investigation · Final report · Mar 22, 2001 · N1575 · Substantial damage
  > the loss of tail rotor control during maneuvering resultant from the failure of the tail rotor drive shaft coupling due to a stripped thread which allowed the grease lubricating the shaft to leak out. A factor was the lack of suitable terrain for the forced…
- [NTSB DEN01LA067](https://openairdocs.org/ntsb/DEN01LA067.md): Robinson R22 Beta · Buffalo, WY · Accident · No injuries · Limited investigation · Final report · Mar 11, 2001 · N144MB · Substantial damage
  > failure of the rotor drive system clutch assembly which rendered the aircraft uncontrollable.

## 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 year(c."eventDate") = 2001
  AND c."mKey" IN (SELECT o.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o."occurrenceNumber" = 1 AND o."occurrenceCode" = 132)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?occurrence=132&year=2001

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