# NTSB investigations: Allison 250 SER 250HP: 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 DFW08IA002](https://openairdocs.org/ntsb/DFW08IA002.md): Bell Helicopter Textron 206L-1 · Galveston, TX · Incident · No injuries · Incident investigation · Final report · Oct 6, 2007 · N3899C · Minor damage > The loss of tail rotor control during initial takeoff climb due to the fracture of a tail rotor blade as result of impact with a foreign object. - [NTSB SEA07LA021](https://openairdocs.org/ntsb/SEA07LA021.md): Hughes 369E · Jensen, UT · Accident · 1 fatal · Limited investigation · Final report · Nov 21, 2006 · N500FU · Substantial damage > The pilot's failure to maintain clearance with the transmission wires due to an inadquate visual lookout while maneuvering during a search and rescue flight. - [NTSB CHI06FA173](https://openairdocs.org/ntsb/CHI06FA173.md): Bell 206B · Walford, IA · Accident · 1 fatal · Field investigation · Final report · Jun 30, 2006 · N2877F · Destroyed > The pilot's failure to maintain clearance from powerlines. The powerlines were a factor. - [NTSB SEA05CA173](https://openairdocs.org/ntsb/SEA05CA173.md): Hughes 369E · Donnelly, ID · Accident · No injuries · Data collection · Final report · Aug 16, 2005 · N500FU · Substantial damage > The pilot's failure to maintain clearance of a tree during a landing attempt due to loss of visibility from a self induced brown-out condition. Contributing factors were the pilot's failure to identify a hazardous landing site, and the tree. - [NTSB DFW05LA180](https://openairdocs.org/ntsb/DFW05LA180.md): Bell 430 · Gulf of Mexico · Accident · No injuries · Limited investigation · Final report · Jul 11, 2005 · N430CV · Substantial damage > The helicopter's tail rotor blade's contact with an unknown object during landing. - [NTSB SEA04LA102](https://openairdocs.org/ntsb/SEA04LA102.md): Bell 206B · Prosser, WA · Accident · No injuries · Limited investigation · Final report · Jun 9, 2004 · N213SD · Substantial damage > The pilot's failure to maintain clearance with the power lines while maneuvering. - [NTSB SEA04LA005](https://openairdocs.org/ntsb/SEA04LA005.md): Bell 206B · Swisshome, OR · Accident · 2 fatal · Limited investigation · Final report · Oct 14, 2003 · N86W · Substantial damage > The pilot's failure to maintain clearance from power lines while maneuvering. The power line, mountainous terrain with high obstructions (thick trees and underbrush) and the operators failure to maintain a "hazard map" as indicated in their procedures manual… - [NTSB FTW02LA176](https://openairdocs.org/ntsb/FTW02LA176.md): Bell 206L-3 · Dover, AR · Accident · No injuries · Limited investigation · Final report · Jun 9, 2002 · N103AE · Substantial damage > The pilot's failure to maintain clearance with trees during the approach. A contributing factor was dark night light conditions. - [NTSB ATL02FA003](https://openairdocs.org/ntsb/ATL02FA003.md): Bell 206B · N. Wilkesboro, NC · Accident · 2 fatal · Field investigation · Final report · Oct 22, 2001 · N8104J · Destroyed > The pilot's failure to maintain visual lookout and clearance above obstacles, which resulted in a collision with power lines and subsequent loss of control and collision with terrain. - [NTSB ANC01LA030](https://openairdocs.org/ntsb/ANC01LA030.md): Bell 206L-1 · Tyonek, AK · Accident · No injuries · Limited investigation · Final report · Jan 18, 2001 · N80KA · Substantial damage > The pilot's failure to maintain adequate tail rotor clearance while maneuvering to land. - [NTSB MIA97FA070](https://openairdocs.org/ntsb/MIA97FA070.md): Bell 206-B3 · Fort Lauderdale, FL · Accident · 4 fatal · Field investigation · Final report · Jan 23, 1997 · N2047R · Destroyed > The pilot's incapacitation by carbon monoxide from undetermined sources which led to his diminished ability to see and avoid a radio tower. - [NTSB SEA96LA070](https://openairdocs.org/ntsb/SEA96LA070.md): Bell 206B · La Grande, OR · Accident · Minor injuries · Limited investigation · Final report · Mar 18, 1996 · N57362 · Substantial damage > the pilot's failure to maintain clearance with trees after pulling up from an aerial application spray run. - [NTSB SEA95LA023](https://openairdocs.org/ntsb/SEA95LA023.md): Fairchild Hiller FH-1100 · Yamhill, OR · Accident · Serious injuries · Limited investigation · Final report · Nov 19, 1994 · N4258V · Substantial damage > Failure of the pilot to maintain adequate altitude/clearance, while maneuvering to a hover, which allowed the external load cable/hook to become snagged and to rebound into the path of the main rotor blades. - [NTSB SEA91LA023](https://openairdocs.org/ntsb/SEA91LA023.md): Hughes 369D · Mulina, OR · Accident · No injuries · Limited investigation · Final report · Nov 26, 1990 · N1106Z · Substantial damage > In-flight collision with a rebounding long-line, which caused main-rotor RPM decay and tail-boom separation, compromising the pilot's ability to successfully accomplish an attempted autorotation. - [NTSB SEA89LA170](https://openairdocs.org/ntsb/SEA89LA170.md): Hughes 369D · Petersburg, AK · Accident · No injuries · Limited investigation · Final report · Sep 9, 1989 · N1088N · Substantial damage > The pilot failed to obtain clearance over trees. Contributing to the accident was: the aircraft being above its maximum certificated gross weight limitation and the trees. - [NTSB MKC89LA188](https://openairdocs.org/ntsb/MKC89LA188.md): Bell 206B · Park Rapids, MN · Accident · No injuries · Limited investigation · Final report · Aug 26, 1989 · N2168S · Substantial damage > The pilot misjudged the clearance between the helicopter and the power line. The power line (transmission wire) was considered to be a contributing factor. - [NTSB LAX88LA304](https://openairdocs.org/ntsb/LAX88LA304.md): Bell 206L-1 · Barrett Junct., CA · Accident · Serious injuries · Limited investigation · Final report · Aug 31, 1988 · N74WH · Substantial damage > While descending into a canyon, the aircraft struck powerlines, went into an uncontrolled descent and collided with the terrain. The pilot stated that he could not see the powerlines and that his visibility was restricted by the sun. All four passengers… - [NTSB MIA88FA257](https://openairdocs.org/ntsb/MIA88FA257.md): Hughes 500 · Riviera Beach, FL · Accident · Serious injuries · Field investigation · Final report · Aug 19, 1988 · N3766Z · Substantial damage > The traffic watch helicopter was cruising northbound along the interstate at 450 ft AGL & 85 KTS airspeed. A grinding noise was heard & the tail rotor separated from the acft. The acft began an uncommanded right turn which was arrested in about 1/4 turn. The… - [NTSB FTW87LA194](https://openairdocs.org/ntsb/FTW87LA194.md): Bell 206L-1 · Eugene Island · Accident · Minor injuries · Limited investigation · Final report · Aug 10, 1987 · N5000Y · Destroyed > The acft experienced a main rotor blade strike during takeoff from an offshore platform. The rotor blade struck the underside of a cable raceway on a drilling rig that was situated adjacent to the platform helideck. The raceway was 9 feet laterally and 22… - [NTSB SEA87LA025](https://openairdocs.org/ntsb/SEA87LA025.md): Hughes 369D · Winlock, WA · Accident · No injuries · Limited investigation · Final report · Nov 14, 1986 · N1089D · Substantial damage > The plt was loading xmas trees from a farm to a truck. He had just released a load and was en route back to the pickup area when the empty long-line sling contacted treetops. The sling rebounded into the tail rotor & damaged the gear box which resulted in… - [NTSB LAX86FJA06](https://openairdocs.org/ntsb/LAX86FJA06.md): Bell 206B · Maui, HI · Accident · 2 fatal · Final report · May 18, 1986 · N244WC · Destroyed > The acft collided with powerlines while carrying pass'g on a sightseeing flt through a canyon. The wires across the canyon were EST to be 1700 long with height AGL unknown. The wires were unmarked and were 1/2 in dia aluminum. One of the passengers was… - [NTSB FTW85FA287](https://openairdocs.org/ntsb/FTW85FA287.md): Bell 206L-1 · Saginaw, TX · Accident · Serious injuries · Field investigation · Final report · Jul 15, 1985 · N32GT · Destroyed > The helicopter had landed in the road to pick up an injured auto accident patient. The plt made an aerial check prior to landing to the west in a calm wind condition. The patient was loaded in a secure stretcher and all was ready for liftoff. The plt stated… - [NTSB LAX85FA315](https://openairdocs.org/ntsb/LAX85FA315.md): Bell 206-B · Page, AZ · Accident · 2 fatal · Field investigation · Final report · Jul 12, 1985 · N38942 · Destroyed > On July 12, 1984, a Bell 206B helicopter collided with a steel bridge 10 miles so of Page, AZ. The helicopter was being filmed in flt during the making of a movie. VMC existed at the time. The helicopter was destroyed and the plt and pax, an italian actor,… - [NTSB DEN85FA027](https://openairdocs.org/ntsb/DEN85FA027.md): Bell 206B-11 · Bingham Canyon, UT · Accident · 4 fatal · Field investigation · Final report · Nov 15, 1984 · N1077T · Destroyed > Pilot was taking passeengers on a sightseeng flight over the kennecott copper mine, largest open pit copper mine in the world. Helicopter collided with unmarked power lines approx 185 ft AGL. Power lines are supported by two unmarked towers on opposing hills… - [NTSB SEA84LA219](https://openairdocs.org/ntsb/SEA84LA219.md): Bell 206 · Boulder City, NV · Accident · No injuries · Limited investigation · Final report · Sep 4, 1984 · N13ML · Substantial damage > The plt was landing at a helipad that was surrounded by a wire fence. He reported that as he was about to land, he misjudged his apch & the tail rotor struck the fence. Subsequently, the helicopter hit the ground while turning right & the gear collapsed. ## 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 ('03002', '03003') 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=03002&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.