# NTSB investigations: Allison 250 SER 400HP: In flight collision with object 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 NYC05FA099](https://openairdocs.org/ntsb/NYC05FA099.md): Bell 206L · New York, NY · Accident · Serious injuries · Field investigation · Final report · Jun 14, 2005 · N78TD · Substantial damage > The pilot's inadequate preflight planning, which resulted in an attempted takeoff with an overweight helicopter, and subsequent impact with a pier and water. Factors were a high ambient temperature and unfavorable winds. - [NTSB ANC03LA015](https://openairdocs.org/ntsb/ANC03LA015.md): Bell 206B · Kingman, AZ · Accident · 1 fatal · Limited investigation · Final report · Nov 15, 2002 · N16962 · Substantial damage > The pilot's failure to maintain altitude/clearance from obstacles during cruise flight, which resulted in the helicopter striking a transmission line, and subsequently the ground. - [NTSB ANC98LA003](https://openairdocs.org/ntsb/ANC98LA003.md): Bell 206-B2 · Sutton, AK · Accident · No injuries · Limited investigation · Final report · Oct 15, 1997 · N86TA · Substantial damage > The pilot's failure to maintain clearance between the tail rotor and the external long line cable, and the subsequent entanglement of the tail rotor with the long line. - [NTSB ANC96LA097](https://openairdocs.org/ntsb/ANC96LA097.md): Bell 206B · Juneau, AK · Accident · No injuries · Limited investigation · Final report · Jul 8, 1996 · N2761F · Substantial damage > The pilot's failure to maintain proper alignment while lifting the helicopter to a hover and inducing a dynamic roll to avoid striking a passenger. - [NTSB ANC95LA112](https://openairdocs.org/ntsb/ANC95LA112.md): Bell 206B-3 · Bettles, AK · Accident · No injuries · Limited investigation · Final report · Jul 21, 1995 · N58129 · Substantial damage > Failure of the pilot to ensuring the sling cable was free of the skid before lifting off into a hover, which allowed the cable to become wrapped (entangled) around the skid. - [NTSB CHI94LA161](https://openairdocs.org/ntsb/CHI94LA161.md): Bell 206B · Winnebago, IL · Accident · No injuries · Limited investigation · Final report · May 12, 1994 · N49585 · Substantial damage > a wire strike due to failure to maintain proper altitude, and improper visual lookout by the pilot-in-command. - [NTSB BFO91LA036](https://openairdocs.org/ntsb/BFO91LA036.md): Hughes 369HS · Columbia, MD · Accident · No injuries · Limited investigation · Final report · Mar 27, 1991 · N5FC · Substantial damage > The pilot's inadequate visual lookout, which resulted in his failure to see-and-avoid the obstruction (fence post). - [NTSB NYC90LA189](https://openairdocs.org/ntsb/NYC90LA189.md): Bell 206 · Athens, OH · Accident · Serious injuries · Limited investigation · Final report · Aug 7, 1990 · N49651 · Substantial damage > The pilot's failure to visually acquire and maintain clearance from the powerline(s). Contributing to the accident was the adverse weather conditions. - [NTSB SEA90LA081](https://openairdocs.org/ntsb/SEA90LA081.md): Hughes 369D · Kelso, WA · Accident · 1 fatal · Limited investigation · Final report · May 21, 1990 · N8306F · No damage > Failure of the pilot to keep the external load clear of obstacles (trees). Factors related to the accident were: failure of the pilot and ground crewman to follow safety procedures, and the proximity of the trees. - [NTSB LAX90LA162](https://openairdocs.org/ntsb/LAX90LA162.md): Hughes 369C · Kahului, HI · Accident · No injuries · Limited investigation · Final report · May 4, 1990 · N9219F · Substantial damage > The pilots failure to ensure that adequate room existed to position the helicopter on the landing platform. Contributing to the accident was the failure of ground personnel to ensure that hazards to the landing helicopter were clear of the landing area. - [NTSB NYC89LA171](https://openairdocs.org/ntsb/NYC89LA171.md): Hughes 369HS · Niagara Falls, NY · Accident · No injuries · Limited investigation · Final report · May 30, 1989 · N9238F · Substantial damage > Failure of the pilot to see and avoid the cables. - [NTSB DEN86LA151](https://openairdocs.org/ntsb/DEN86LA151.md): Bell 206B · Portal, ND · Accident · Minor injuries · Limited investigation · Final report · Jun 4, 1986 · N59495 · Substantial damage > The plt reported that the acft hit wires at the end of a swath run. The pitch change link broke when the main rotor contacted the wires and the plt attempted to land. After touchdown, the helicopter rolled onto its side. - [NTSB CHI85LA303](https://openairdocs.org/ntsb/CHI85LA303.md): Bell 206BII · Farmington, MN · Accident · No injuries · Limited investigation · Final report · Jul 20, 1985 · N49737 · Substantial damage > During maneuvering to ld in an uncultivated fld the tail rotor struck a fence post,from a dismantled fence,that was concealed by high weeds. One tail rotor blade was separated,the pilot lost control,and on touchdown the helicopter rolled over. - [NTSB ATL85FA170](https://openairdocs.org/ntsb/ATL85FA170.md): Bell 206L · Duluth, GA · Accident · 2 fatal · Field investigation · Final report · May 20, 1985 · N403DC · Destroyed > After loading a seriously burned patient in the helicopter, the plt started the eng & lifted off from the hospital parking lot. Immediately after lift-off, he started forward translational flt. About 65 ft from the lift-off point, an advancing main rotor… - [NTSB LAX84LA488](https://openairdocs.org/ntsb/LAX84LA488.md): Bell 206B · Paso Robles, CA · Accident · Serious injuries · Limited investigation · Final report · Sep 20, 1984 · N2246W · Destroyed > Plt stated that after receiving a special VFR clearence he took off to spray a nearby field. He continued to state that he 'made a couple of circuits over the field, observed the telephone wires and began spraying. After performing 2 or 3 passes I hit some… - [NTSB ANC84LA012](https://openairdocs.org/ntsb/ANC84LA012.md): Bell 206-B · Kodiak, AK · Accident · Serious injuries · Limited investigation · Final report · Oct 30, 1983 · N90188 · Destroyed > While inspecting a transmission wire tower, the left skid became entangled with the power line guide. This pulled the helicopter out of CG. While the plt was trying to correct the problem, the m/r blade contacted the tower & struck the tail boom separating… - [NTSB ATL82DA257](https://openairdocs.org/ntsb/ATL82DA257.md): Bell 206L · Greenville, SC · Accident · No injuries · Final report · Aug 30, 1982 · N403DC · Substantial damage > The pilot reported that he was making an approach to a new helipad that was still under construction when he felt a severe vibration. After landing and shutdown, he discovered that the tail rotor had struck the glass cover of a heliport perimeter light. - [NTSB LAX82DA140](https://openairdocs.org/ntsb/LAX82DA140.md): Hughes 369HS · 8 S. Of Page, AZ · Accident · 3 fatal · Final report · Apr 18, 1982 · N4EE · Destroyed > The aircraft was number two in a trail of three helicopters flying up the Colorado river at marble canyon to page, AZ when it struck an aerial cableway stretching across the river, 22 ft above the water. Witnesses stated that after the collision the… ## 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."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('03013', '03012') AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 220)) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb?engine=03013&occurrence=220 --- 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.