# NTSB investigations: Allison 250 SER 400HP, TX 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 CEN22LA219](https://openairdocs.org/ntsb/CEN22LA219.md): Bell 206B · Cameron, TX · Accident · Minor injuries · Class 4 · Limited · Final report · May 31, 2022 · N27574 · Substantial damage > The flight crew not maintaining lateral control of the helicopter during hovering operation which resulted in a dynamic rollover. - [NTSB CEN18LA290](https://openairdocs.org/ntsb/CEN18LA290.md): Bell 206 · Todd Mission, TX · Accident · Minor injuries · Limited investigation · Final report · Jul 20, 2018 · N352CT · Substantial damage > The passenger’s inadvertent interference with the tail rotor pedals, which resulted in a loss of helicopter control during takeoff and the subsequent impact with terrain. - [NTSB CEN11LA023](https://openairdocs.org/ntsb/CEN11LA023.md): Bell 206B · Newton, TX · Accident · Serious injuries · Limited investigation · Final report · Oct 13, 2010 · N499BH · Substantial damage > The pilot’s attempted takeoff with the fuel hose attached to the helicopter and the pilot and ground crew’s failure to accurately communicate. - [NTSB FTW97LA364](https://openairdocs.org/ntsb/FTW97LA364.md): Bell 206B2 · Anahuac, TX · Accident · Serious injuries · Limited investigation · Final report · Sep 25, 1997 · N59396 · Destroyed > the pilot's inability to maintain control of the helicopter after encountering a dynamic rollover due to entanglement of the external load cable with the left landing gear skid. - [NTSB FTW96LA054](https://openairdocs.org/ntsb/FTW96LA054.md): Hughes 369HS · Leakey, TX · Accident · Minor injuries · Limited investigation · Final report · Nov 27, 1995 · N8312F · Substantial damage > improper planning/decision by the pilot, by failing to ensure there was adequate fuel on board, which resulted in fuel exhaustion and a subsequent roll-over during a forced landing on hilly terrain. A factor relating to the accident was: downsloping terrain… - [NTSB FTW91LA121](https://openairdocs.org/ntsb/FTW91LA121.md): Bell 206B · Freeport, TX · Accident · No injuries · Limited investigation · Final report · Jul 14, 1991 · N16962 · Substantial damage > The pilot's failure to maintain sufficient rotor RPM during the autorotation. Factors were the fuel exhaustion induced power loss due to the pilot's improper pre-flight inspection. - [NTSB FTW90LA095](https://openairdocs.org/ntsb/FTW90LA095.md): Hughes 369HS · Junction, TX · Accident · No injuries · Limited investigation · Final report · Apr 15, 1990 · N9138F · Substantial damage > The pilot in command's inadequate execution of the autorotation following a engine failure which resulted from his failure to refuel the aircraft with the proper grade of fuel when he ran short during the flight. - [NTSB FTW88LA153](https://openairdocs.org/ntsb/FTW88LA153.md): Bell 206B · Pearland, TX · Accident · No injuries · Limited investigation · Final report · Aug 18, 1988 · N16962 · Substantial damage > The helicopter was at 300 feet AGL, making an approach after a maintenance test flight, when the engine overtemped and engine power was lost. During the autorotation landing, the helicopter touched down hard. The acft eng began to decelerate prior to… - [NTSB FTW87FA198](https://openairdocs.org/ntsb/FTW87FA198.md): Bell 206B · Pledger, TX · Accident · No injuries · Field investigation · Final report · Aug 12, 1987 · N33PW · Substantial damage > While cruising at 900' AGL, the plt noted a hvy shudder flwd by a grinding noise, loud 'bang' & a low rotor RPM signal. He made an autorotation to a road, but drg touchdown, the main rotor blades flexed dwn & severed the tail boom. An exam revealed the main… - [NTSB FTW87LA016](https://openairdocs.org/ntsb/FTW87LA016.md): Bell 206L · Galveston, TX · Accident · Minor injuries · Limited investigation · Final report · Nov 11, 1986 · N16772 · Substantial damage > The plt was attempting to hover in a tailwind of 35 KTS which exceeded the acft manufacturers performance limitiations for operations in allowable relative wind. The plt lost control of the acft on lift-off. The acft rolled over and came to rest on its right… - [NTSB FTW86LA130](https://openairdocs.org/ntsb/FTW86LA130.md): Bell 206B · Conroe, TX · Accident · Serious injuries · Limited investigation · Final report · Jul 15, 1986 · N352AT · Substantial damage > The pilot reported that he lost tail rotor control during the transition part of the takeoff. As the helicopter rotated to the right, the pilot reduced power and pulled in collective before impact. Examination of the tail rotor showed no evidence of any tail… - [NTSB FTW86LA041](https://openairdocs.org/ntsb/FTW86LA041.md): Hughes 369D · New Boston, TX · Accident · Minor injuries · Limited investigation · Final report · Mar 7, 1986 · N58420 · Substantial damage > The pilot experienced a tail rotor drive shaft flexible coupling failure when he pulled collective pitch to come to a hover before landing. The helicopter entered an uncontrollable right spin. During his haste to get the helicopter on the ground the pilot… - [NTSB FTW80FPA16](https://openairdocs.org/ntsb/FTW80FPA16.md): Bell 206B · Dallas, TX · Accident · No injuries · Closed · Jul 13, 1980 · N2771S · Substantial damage - [NTSB FTW78FPA21](https://openairdocs.org/ntsb/FTW78FPA21.md): Bell 206B · Mc Kinney, TX · Accident · No injuries · Closed · Apr 16, 1978 · N23JH · Substantial damage - [NTSB FTW78FA025](https://openairdocs.org/ntsb/FTW78FA025.md): Bell 206B · Palacids, TX · Accident · 1 fatal · Closed · Jan 25, 1978 · N90024 · Destroyed ## 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 x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('03013', '03012')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb?engine=03013&state=TX --- 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.