# NTSB investigations: Allison 250 SER 317HP 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 WPR20LA331](https://openairdocs.org/ntsb/WPR20LA331.md): Bell 206 · Randle, WA · Accident · Serious injuries · Class 4 · Limited · Final report · Sep 9, 2020 · N91TA · Destroyed > The pilot's failure to maintain clearance from a tree while conducting an external load operation. - [NTSB CEN14LA465](https://openairdocs.org/ntsb/CEN14LA465.md): Bell 206B · Spring, TX · Accident · No injuries · Limited investigation · Final report · Jul 30, 2014 · N866H · Substantial damage > The pilot's distraction by a cell phone call, which led to his failure to perform an exterior check of the helicopter and resulted in a tie-down strap remaining attached to the main rotor during the engine start. - [NTSB SEA07FA014](https://openairdocs.org/ntsb/SEA07FA014.md): Bell 407 · Kalispell, MT · Accident · No injuries · Field investigation · Final report · Nov 3, 2006 · N407KH · Substantial damage > On-speed failure of the second stage turbine wheel as the result of engine oil starvation. The lack of maintenance oversight was a contributing factor. - [NTSB DFW06LA197](https://openairdocs.org/ntsb/DFW06LA197.md): Bell 206L-1 · Ozona, TX · Accident · No injuries · Limited investigation · Final report · Aug 12, 2006 · N601GM · Substantial damage > The pilot's selection of an unsuitable terrain for landing. A contributing factor was the lack of suitable terrain. - [NTSB DFW05FA073](https://openairdocs.org/ntsb/DFW05FA073.md): Bell 206-L1 · Gentry, AR · Accident · 1 fatal · Field investigation · Final report · Feb 21, 2005 · N5734M · Substantial damage > The pilot’s improper decision to maneuver in an environment conducive to a loss of tail rotor effectiveness. - [NTSB ATL05CA003](https://openairdocs.org/ntsb/ATL05CA003.md): Bell 206 B · Eutaw, AL · Accident · Minor injuries · Data collection · Final report · Oct 14, 2004 · N300HT · Substantial damage > The pilots inadequate preflight planning of fuel required for the flight that resulted in fuel exhaustion and the subsequent loss of engine power. - [NTSB LAX02LA295](https://openairdocs.org/ntsb/LAX02LA295.md): Bell 206L-1 · North Las Vegas, NV · Accident · No injuries · Limited investigation · Final report · Sep 25, 2002 · N601GM · Substantial damage > the pilot's inadequate in-flight planning/decision, which resulted in fuel exhaustion and loss of engine power due to an inadequate fuel supply. - [NTSB SEA02TA110](https://openairdocs.org/ntsb/SEA02TA110.md): Bell 206B · Rainier, WA · Accident · No injuries · Final report · Jun 25, 2002 · N1087L · Substantial damage > The pilot's failure to maintain aircraft control while trying to land. Rough/uneven terrain, inaccurate performance data calculations, inadequate in-flight planning and lack of familiarity with the geographic area were factors. - [NTSB MIA02LA029](https://openairdocs.org/ntsb/MIA02LA029.md): Hughes OH-6A · Hernando, MS · Accident · No injuries · Limited investigation · Final report · Nov 25, 2001 · N129BC · Substantial damage > The flight instructor's improper supervision of the dual student during a practice autorotation landing by allowing an excessive aft pitch attitude and low main rotor rpm conditions to develop during the landing/flare touchdown, which resulted in the… - [NTSB LAX00GA286](https://openairdocs.org/ntsb/LAX00GA286.md): Bell 206L-1 · Montello, NV · Accident · 1 fatal · Final report · Aug 4, 2000 · N10864 · Substantial damage > The loss of control in hovering flight and impact with terrain for undetermined reasons. - [NTSB MIA95TA188](https://openairdocs.org/ntsb/MIA95TA188.md): McDonnell Douglas H369 · Panama City, FL · Accident · No injuries · Final report · Jul 21, 1995 · N129BC · Substantial damage > The pilot-in-command's improper aft application of cyclic control during a simulated touchdown autorotation on landing flare touchdown, resulting in the main rotor blades colliding with the tail boom assembly. Contributing to the accident was the improper… - [NTSB MIA95LA044](https://openairdocs.org/ntsb/MIA95LA044.md): Bell 206B · Miami, FL · Accident · No injuries · Limited investigation · Final report · Dec 20, 1994 · N163BH · Substantial damage > Inadequate supervision by the pilot-in-command (CFI) for failure to note reduction in clearance between the tail rotor and an embankment. - [NTSB LAX90LA283](https://openairdocs.org/ntsb/LAX90LA283.md): Bell 206B II · San Francisco, CA · Accident · Minor injuries · Limited investigation · Final report · Aug 14, 1990 · N2917W · Destroyed > The pilot's failure to maintain directional control of the helicopter. Contributing to the accident was the pilot's decision to operate the helicopter in a flight regime conducive to unanticipated right yaw. - [NTSB FTW90LA107](https://openairdocs.org/ntsb/FTW90LA107.md): Bell 206BIII · Kaplan, LA · Accident · No injuries · Limited investigation · Final report · May 8, 1990 · N2187P · Substantial damage > Restricted movement of the right skid assembly causing the lateral center of gravity to be exceeded during the attempted take off. - [NTSB ATL85LA183](https://openairdocs.org/ntsb/ATL85LA183.md): Hughes 369HS · Aiken, SC · Accident · No injuries · Limited investigation · Final report · Jun 7, 1985 · N9146F · Substantial damage > During a landing, the eng lost power & the helicopter touched down hard. The plt stated that prior to the 15 min flt, the fuel gage was indicating 125 lbs of fuel & at the accident site it indicated 90 lbs of fuel. A post crash inspection of the fuel system… - [NTSB LAX85LA045](https://openairdocs.org/ntsb/LAX85LA045.md): Bell 206B · Inverness, CA · Accident · No injuries · Limited investigation · Final report · Nov 10, 1984 · N2917W · Substantial damage > An autorotation was initiated at about 300 ft as eng and rotor RPM began to decrease. Touchdown occurred in soft sand with some forward motion. Full aft cyclic was applied causing the main rotor to contact the tailboom. Exam of the acft fuel system revealed… - [NTSB LAX84FA421](https://openairdocs.org/ntsb/LAX84FA421.md): Fairchild Hiller FH-1100 · Meadview, AZ · Accident · 3 fatal · Field investigation · Final report · Jul 29, 1984 · N711KH · Destroyed > Purpose of the flt was s sightseeing tour of lake mead, hoover dam and the western rim of the grand canyon. Before reaching the canyon the flt was to travel over a 5500 ft MSL ridge. The helicopter contacted a juniper tree at the bottom of a 3-sided canyon at… - [NTSB ANC84LA071](https://openairdocs.org/ntsb/ANC84LA071.md): Bell 206L-1 · Mt Mckinley Vil, AK · Accident · No injuries · Limited investigation · Final report · May 16, 1984 · N1078N · Substantial damage > The helicopter experienced an engine failure while cruising at about 600 ft AGL. The pilot made a forced landing during which the main rotor blades collided with trees. Examination of the aircraft fuel system revealed that the check valves located in the fuel… - [NTSB FTW83LA369](https://openairdocs.org/ntsb/FTW83LA369.md): Bell 206B · Grand Isle Blk · Accident · No injuries · Limited investigation · Final report · Aug 4, 1983 · N39114 · Substantial damage > While flaring to land on an off-shore platform, the plt noted a sudden vibration. He continued the landing; however, by the time the helicopter touched down, the vibration became severe & the acft turned to the right. An exam revealed that a midspan balance… - [NTSB LAX83FA287](https://openairdocs.org/ntsb/LAX83FA287.md): Bell 206B · Temecula, CA · Accident · Minor injuries · Field investigation · Final report · Jun 14, 1983 · N5754M · Substantial damage > The plt took off on a demonstration flt to familiarize the passengers with the helicopter. He reported that after takeoff, he proceeded northeast at about 100 to 150 ft AGL & 80 KTS in wind that was from the west at 25 gusting 30 KTS. After traveling about 3… - [NTSB NYC82DA128](https://openairdocs.org/ntsb/NYC82DA128.md): Bell 206B · Jamestown, RI · Accident · No injuries · Final report · Jun 20, 1982 · N20303 · Substantial damage > The helicopter was being used to photograph ships. According to the pilot, it began to spin while he was in a low level hover over the water. Subsequently, the helicopter struck the water, rolled over, then sank in about 104 ft of water and was not recovered. - [NTSB FTW81FRG25](https://openairdocs.org/ntsb/FTW81FRG25.md): Hiller Acft FH1100 · Bastrop, TX · Accident · Serious injuries · Closed · Mar 16, 1981 · N5065F · Substantial damage - [NTSB LAX79FUQ39](https://openairdocs.org/ntsb/LAX79FUQ39.md): Hiller Acft FH1100 · Oxnard, CA · Accident · No injuries · Closed · Jul 19, 1979 · N5064F · Destroyed - [NTSB DEN78DQA55](https://openairdocs.org/ntsb/DEN78DQA55.md): Hughes 500C · Cuba, NM · Accident · Serious injuries · Closed · Sep 10, 1978 · N9125F · Substantial damage - [NTSB MIA77FLA31](https://openairdocs.org/ntsb/MIA77FLA31.md): Hughes 369HS · Bunnell, FL · Accident · No injuries · Closed · Jun 6, 1977 · N9081F · Substantial damage - [NTSB MIA77FA031](https://openairdocs.org/ntsb/MIA77FA031.md): Bell 206-A · Jayuya, PR · Accident · 1 fatal · Closed · Feb 17, 1977 · N4046G · Destroyed - [NTSB FTW76FRD58](https://openairdocs.org/ntsb/FTW76FRD58.md): Hughes 369 · Intrcostl City, LA · Accident · Serious injuries · Closed · Aug 4, 1976 · N9125F · Destroyed - [NTSB DEN76FTM39](https://openairdocs.org/ntsb/DEN76FTM39.md): Bell 206B · Coalville, UT · Accident · Minor injuries · Closed · Jul 14, 1976 · N49570 · Substantial damage - [NTSB ANC76AA118](https://openairdocs.org/ntsb/ANC76AA118.md): Bell 206B · Eagle, AK · Accident · No injuries · Closed · Jun 28, 1976 · N2953W · Substantial damage - [NTSB LAX75O0020](https://openairdocs.org/ntsb/LAX75O0020.md): Bell 206B · Lake Anatico, Peru · Accident · Minor injuries · Closed · Feb 2, 1975 · N4081G · Substantial damage - [NTSB LAX7500036](https://openairdocs.org/ntsb/LAX7500036.md): Bell 206B · Lake Anatico, Peru · Accident · Minor injuries · Closed · Feb 2, 1975 · N4081G · Substantial damage - [NTSB SEA75DTI01](https://openairdocs.org/ntsb/SEA75DTI01.md): Hiller Acft FH1100 · Glacier Park, MT · Accident · No injuries · Closed · Jul 15, 1974 · N711KH · Substantial damage - [NTSB ANC73AA019](https://openairdocs.org/ntsb/ANC73AA019.md): Hughes 369S · Craig, AK · Accident · No injuries · Closed · Sep 13, 1972 · N9064F · Substantial damage - [NTSB SEA72DTA08](https://openairdocs.org/ntsb/SEA72DTA08.md): Hughes 369HS · Mosby, MT · Accident · No injuries · Closed · Aug 18, 1971 · N9059F · Substantial damage - [NTSB SEA70DWA06](https://openairdocs.org/ntsb/SEA70DWA06.md): Hiller Acft FH1100 · Beaverton, OR · Accident · No injuries · Closed · Mar 9, 1970 · N750FH · Substantial damage - [NTSB SEA69F0140](https://openairdocs.org/ntsb/SEA69F0140.md): Bell 206 · Seattle, WA · Accident · No injuries · Closed · Oct 20, 1968 · N4046G · Substantial damage ## 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 ('03011')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb?engine=03011 --- 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.