# NTSB investigations, TX: 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 DFW07LA197](https://openairdocs.org/ntsb/DFW07LA197.md): Robinson Helicopter R22 Beta · Fort Stockton, TX · Accident · Serious injuries · Limited investigation · Final report · Sep 12, 2007 · N993KC · Substantial damage
  > The failure of the v-belt drive system to the main rotor for undetermined reasons. Contributing to the accident was insufficient altitude to perform a successful autorotation.
- [NTSB DFW06LA093](https://openairdocs.org/ntsb/DFW06LA093.md): Sikorsky S-76A · Houston, TX · Accident · No injuries · Limited investigation · Final report · Apr 19, 2006 · N8063R · Substantial damage
  > The failure by maintenance personnel to secure the tail rotor driveshaft cowling after performing maintenance which resulted in a loss of tail rotor control. A contributing factor was the pilot's improper preflight inspection of the tail rotor driveshaft area.
- [NTSB DFW06CA055](https://openairdocs.org/ntsb/DFW06CA055.md): Bell 47-B3 · Dennison, TX · Accident · No injuries · Data collection · Final report · Jan 13, 2006 · N1575 · Substantial damage
  > The in-flight separation of the stabilizer bar tube.
- [NTSB DFW05CA163](https://openairdocs.org/ntsb/DFW05CA163.md): CarterCopter CarterCopter · Olney, TX · Accident · No injuries · Data collection · Final report · Jun 17, 2005 · N121CC · Substantial damage
  > The pilot's inability to maintain control of the gyrocraft during a forced landing as a result of a loss of cyclic and collective control. Contributing factors were the sheared propeller drive pulley bolts, broken wire on the co-pilots cyclic boost control…
- [NTSB FTW04TA012](https://openairdocs.org/ntsb/FTW04TA012.md): Hughes OH-6A · Eagle Pass, TX · Accident · Minor injuries · Final report · Oct 7, 2003 · N8524Z · Substantial damage
  > The failure of the aft segment of the tail rotor drive shaft for undertermined reasons. A contibuting factor was the lack of suitable terrain for the foced landing.
- [NTSB FTW03LA104](https://openairdocs.org/ntsb/FTW03LA104.md): Bell 206L-3 · Kingsland, TX · Accident · No injuries · Limited investigation · Final report · Mar 6, 2003 · N793CA · Substantial damage
  > The loss of tail rotor drive as a result of a blanket coming in contract with the tailrotor blades, after the aft cargo door was left unsecured. Contributing factors were the lack of suitable terrain for the forced landing, and the failure of the medical…
- [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 FTW00LA105](https://openairdocs.org/ntsb/FTW00LA105.md): Schweizer 300C · New Ulm, TX · Accident · No injuries · Limited investigation · Final report · Mar 26, 2000 · N698SM · Substantial damage
  > The pilot's inadequate in-flight evaluation of the landing area, which resulted in the separation of the main rotor system as a result of foreign object damage.
- [NTSB FTW99FA192](https://openairdocs.org/ntsb/FTW99FA192.md): MBB BK-117-B2 · Fresno, TX · Accident · 3 fatal · Field investigation · Final report · Jul 17, 1999 · N110HH · Destroyed
  > the loss of control during approach due to the corrosion of the T-T strap which resulted in fatigue cracking and subsequent separation of the strap and main rotor blade from 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" = 'TX' AND c."eventCountry" = 'USA'
  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&state=TX

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