NTSB investigations: Allison 250 SER 250HP
267 cases on aircraft whose registry engine model is Allison 250 SER 250HP. Aircraft are matched to the registry by N-number and event date, checked against the reported serial number, make and model, so older matches can be wrong.
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Query with SQL
duckdb -csv -c "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'))
ORDER BY c.\"eventDate\" DESC, c.\"ntsbNumber\" DESC"Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.
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'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESCRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
NTSB LAX87LA199Accident · 2 fatalLimited investigationFinal reportHughes 369D · TamuningsA Hughes 369D, operated off of a fishing vessel, went out of control and crashed in the pacific ocean, nr guam. The accident was witnessed by the ship's captain. His statement indicated one of the main rotor blades separated in flt while the helo was orbiting…NTSB MIA87LA133Accident · Minor injuriesLimited investigationFinal reportBell 206L · Miami, FLUnlicensed pilot lost control of helicopter while in hover while attempting to steal the helicopter. The aircraft crashed to earth and rolled over. The pilot was on probation for attempting to steal a helicopter on a previous occasion. The plt received minor…NTSB MIA87LA106Accident · Minor injuriesLimited investigationFinal reportHughes 364HS · Opa Locka, FLThe pilot of the helicopter was executing a normal approach to the ground when as he neared the ground the ventral fin struck the ground. The tail rotor driveshaft re-centered and the pilot thought the accompanying shudder was a tail rotor failure, and landed…NTSB LAX87LA140Accident · No injuriesLimited investigationFinal reportHughes 269D · Palmdale, CADuring an external load operation, the engine lost power. The aircraft collided with the terrain and rolled over. Inspection of the engine revealed an overtemperature to the first and second stage turbine wheel airfoils.NTSB LAX87LA099Accident · No injuriesLimited investigationFinal reportHughes 369D · Lemon Cove, CAThe plt rprtd that while at 100 to 150 ft AGL on an apch to land, the eng lost pwr as though it had flamed out. He entered an autorotation, but was unable to reach the helipad. Subsequently, the helicopter landed in trees & was badly dmgd. Drg the…NTSB ATL87MA035Accident · 4 fatalMajor investigationFinal reportBell 206L-1 · Jamestown, TNThe helicopter was being used in an emerg med svc/med-evac (EMS) opn. At 0230, the plt obtained a partial wx briefing. He was advised of flt prctns for IFR wx thru-out the area with low ceilings, fog, precip & mtns obscd. The flt departed nashville at 0245 &…NTSB SEA87LA025Accident · No injuriesLimited investigationFinal reportHughes 369D · Winlock, WAThe 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 LAX86LA226Accident · Minor injuriesLimited investigationFinal reportBell 206B · Los Angeles, CADuring a x-wind takeoff the downwind skid contacted the landing pad and the helicopter rolled over to the right. One person on the ground was injured by flying debris.NTSB LAX86FJA06Accident · 2 fatalFinal reportBell 206B · Maui, HIThe 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 FTW86LA032Accident · 3 fatalLimited investigationFinal reportSikorsky S-76A · Grand Isle Bl73The acft rolled over in a high x-wind after landing while deplaning passengers. The acft had landed on a moving barge. A landing into the wind was blocked by a crane so the plt sideslipped from a flt path that paralleled the ships movement. The wind was…NTSB DEN86LA007Accident · Serious injuriesLimited investigationFinal reportBell BH 206BII · Kremmling, COWhile maneuvering to observe wildlife, the pilot attempted to hover out of gnd effect in steep mtns terrain at 9800 ft MSL at 2550 lbs gw with a 7-10KT tailwind. According to acft hoge charts in the POH, the acft was not capable of hoge in the conditions of…NTSB MKC85LA207Accident · No injuriesLimited investigationFinal reportFairchild Hiller FH-1100 · Ashland, KSThe helicopter lost power and made a hard forced landing in a backyard. There were no leaks in the fuel system but the fuel tank was found to be empty. The owner states that even though the fuel tank was found to be empty after the accident, the fuel quantity…NTSB FTW85FA287Accident · Serious injuriesField investigationFinal reportBell 206L-1 · Saginaw, TXThe 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 LAX85FA315Accident · 2 fatalField investigationFinal reportBell 206-B · Page, AZOn 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 FTW85LA089Accident · No injuriesLimited investigationFinal reportBell 206L-1 · Houma, LAThe plt departed into known bad wx with low ceilings and poor visibility. Very shortly after takeoff the plt elected to return to the arpt. During a descending right turn the plt broke out of IMC at a very low altitude. He pulledcollective but still landed…NTSB DEN85FA027Accident · 4 fatalField investigationFinal reportBell 206B-11 · Bingham Canyon, UTPilot 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 SEA85LA017Accident · Minor injuriesLimited investigationFinal reportHughes 369D · Humptulips, WAWhen the hoisting cable on the helicopter failed, the hook end rebounded into the rotor system. The rotor system failed from the structural damage imposed and the acft went into an uncontroled descent impacting the ground on the left skid.NTSB CHI85LA018Accident · No injuriesLimited investigationFinal reportHughes 500 · Grosse Ile, MIPlt attempted to start helicopter with main rotor blades tied down.NTSB FTW84LA414Accident · No injuriesLimited investigationFinal reportBell 206L-1 · West Delta 105While in cruise flt, total pwr loss was experienced. Plt setup autorotative water landing, deployed emergency floats. Right float was not fully inflated by water touchdown, acft rolled right to inverted position. Eng teardown revealed carbon buildup between…NTSB SEA84LA219Accident · No injuriesLimited investigationFinal reportBell 206 · Boulder City, NVThe 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.NTSB DEN84FA142Accident · Serious injuriesField investigationFinal reportHughes 369D · Meeker, CODuring slow (35-40 KTS) cruise flt at about 50 ft AGL in mountainous terrain for wildlife survey, pwr loss occurred. Auto systems briefly restored pwr, followed by a ttl loss. Plt executed emergency autorotation into trees on sloping terrain. Investigation…NTSB SEA84LA083Accident · Minor injuriesLimited investigationFinal reportHughes 369D · Kent, WAThe plt requested clearance to transit the seattle tca for a landing at Boeing field. He was advised of a DC-10 departing the seattle-tacoma intl arpt & was cautioned about possible wake turbulence. The DC-10 passed the helicopter with about 1 1/2 mi lateral…NTSB DEN84LA110Accident · No injuriesLimited investigationFinal reportHiller FH 1100 · Provo, UTThe acft was landed in soggy terrain and the right skid sank into the surface. One of the occupants of the helicopter deplaned to'lighten the load'and the plt overcorrected in an attempt to takeoff. The acrt rolled over onto its left side.NTSB DEN84LA075Accident · No injuriesLimited investigationFinal reportHughes 369HS · Buffalo, WYThe helicopter lost power a few minutes after takeoff and made a forced landing. The acft had been refueled from a fuel truck shortly before takeoff. Samples of fuel from the acft and the fuel truck were examined and found to contain water.NTSB DEN84FA038Accident · Serious injuriesField investigationFinal reportBell 206B · Ft. Morgan, COThe helicopter was owned & operated by a tv station & was being used for transportation to a news event. While en route, clouds & reduced visibility due to fog were encountered. The plt elected to land in a field covered with powdered snow. During the…NTSB FTW84LA081Accident · Minor injuriesLimited investigationFinal reportBell 206L-1 · Ardmore, OKThe plt stated that before he took off from Oklahoma city, OK, he called the Oklahoma city fss & obtained a wx briefing. The briefing called for light rain showers, minimum ceiling of 1800 ft, visibility of 3 to 5 miles & no chance of fog, except in low lying…NTSB NYC84FA009Accident · 1 fatalField investigationFinal reportBell 206B III · Hudson, NHThe plt was on a flt to pick up film for a tv station. While en route, he made a mayday call to the manchester control tower. According to witnesses, the acft was proceeding in a northerly direction at about 700 to 1000 ft AGL when they heard a 'muffled pop.'…NTSB SEA83LA205Accident · Minor injuriesLimited investigationFinal reportHughes 369B · Cougar, WAThe aircraft collided with trees and terrain during a forced landing attempt following an in-flight power loss. Subsequent engine teardown revealed failure of several components.NTSB DEN83LA200Accident · Serious injuriesLimited investigationFinal reportBell 206L-1 · Tucker, UTThe helicopter was being used on a seismic data acquistion operation. While landing by a road in mountainous terrain at an elevation of aprx 8400 ft, the helicopter was observed to approach to a hover over the roadway. A considerable amount of dust was blown…NTSB ANC83LA138Accident · No injuriesLimited investigationFinal reportHughes 369D · Mcgrath, AKThe plt stated that he was flying straight & level at aprx 700 ft AGL, when the eng-out light illuminated. He began an autorotation to a ridgeline. During the landing, the main rotor blades contacted the tail boom & severed it from the main fuselage. An…NTSB FTW83LA132Accident · Serious injuriesLimited investigationFinal reportBell 206L-1 · Shipshoal 295Reportedly, the winds were variable a 2 to 4 KTS as the plt began his approach to an off-shore oil rig. He stated that he chose to terminate the landing from a 4 ft hover. At aprx 15 ft above & 5 ft short of the helipad, the helicopter began to drop at an…NTSB ANC83FA032Accident · 1 fatalField investigationFinal reportBell 206B · Cordova, AKThe helicopter was on a rescue/recovery flt for the Alaska state troopers with the plt & a state trooper on board. They departed in variable wx conditions to rescue the plt of another acft. Reportedly, snow was falling in the search area & the winds were…NTSB SEA83FA040Accident · No injuriesField investigationFinal reportBell 206B · Newport, ORThe helicopter was lifting off when the left skid stuck in the dirt. The acft did a dynamic rollover when the left skid remained stuck as the pilot attempted to takeoff. The pilot had just on-loaded two passengers both on the left side. Weather was not a…NTSB FTW83FA066Accident · 3 fatalField investigationFinal reportBell 206B · San Antonio, TXThe acft departed brackettville at 0715 & at 0740 contacted uvalde UNICOM for their wx. When informed that uvalde was "zero-zero" the flt continued east. The acft was later observed & heard flying above the low indefinite ceiling shortly before impacting the…NTSB DEN83LA022Accident · No injuriesLimited investigationFinal reportBell 206B · Near Kalispell, MTAcft departed hospital at missoula in good wx to assist highway accident victim 5 mi east of clinton. Victim was placed aboard helicopter on stretcher for emergency flight to hospital. About 5-6 mi east of missoula plt noticed light snow falling & observed a…NTSB FTW82FRJ17Accident · Serious injuriesFinal reportBell 206B · Jamestown, LAThe pilot was conducting aerial burning operations over a wooded area when he heard a loud bang from the engine area of the helicopter. At that time, the helicopter was approximately 20 ft above the tallest tree in the area with the aerial torch burning. The…NTSB SEA82DA137Accident · No injuriesFinal reportHughes 369D · Shelton, WADuring a sight seeing flight the pilot smelled a burning odor and prepared to make a precautionary off-airport landing. Shortly thereafter, engine RPM decayed and an autorotative landing was effected on a dirt road. On touchdown, the main rotor blades flexed…NTSB ATL82DLQ08Accident · Serious injuriesFinal reportBell 206B · 2nm Sw Of Lynch, KYThe pilot was on a flight to spray powerline right-of-ways with defoliant. During climb, near a 3500 foot ridgeline, the aircraft began to spin to the right. The pilot took corrective action but was not able to stop the spin. The pilot did not have sufficient…NTSB FTW82FA204Accident · 2 fatalField investigationFinal reportBell 206B · Fairfield, TXWitnesses observed the helicopter flying northbound while traveling parallel and just east of a north-south highway. Reportedly, it enter an autorotative landing approach, crossed over the highway and impacted in an open field on a westerly heading after…NTSB SEA82FYM16Accident · Minor injuriesFinal reportHughes 369D · Birkenfeld, ORThe pilot stated that the fuel gauge indicated 150 lbs of fuel remaining when he began the flight. Since the drop point was within 2 to 3 minutes of the departure point, he elected to proceed without refueling. While hovering and being guided into the drop…NTSB SEA82FA070Accident · Minor injuriesField investigationFinal reportHughes 369D · 6nm Sse Wrangel, AKThe pilot reported that the aircraft was on a reconnaissance flight to survey a proposed powerline project. He reported that during the flight, the engine flamed out and an autorotation was initiated. He maneuvered the helicopter to land in a clearance, but…NTSB ATL82DA027Accident · No injuriesFinal reportBell 206L-1 · Chamblee, GAWhile returning to refuel from an air ambulance flight the helicopter yawed left and N2 dropped to about 92% approximately one mile from the airport. At 30-50 feet with airspeed at about 20 knots the aircraft yawed violently to the left with corresponding…NTSB FTW82DRD07Accident · Serious injuriesClosedBell 206L-1 · Gulf Of Mexico (Gulf of Mexico)NTSB MIA82FLD09Accident · No injuriesClosedBell 206B · Orlando, FLNTSB LAX82FA014Accident · 1 fatalClosedBell 206B · Napa, CANTSB FTW82DA013Accident · Minor injuriesClosedBell 206L-1 · Sabine, TXNTSB ATL81FA118Accident · Serious injuriesClosedHughes 369A · Atlanta, GANTSB LAX81FA131Accident · No injuriesClosedBell 206L-1 · Waialae Falls, HINTSB DEN81FTC26Accident · Minor injuriesClosedHughes 369D · Cokeville, WYNTSB SEA81DYP37Accident · No injuriesClosedHughes 369D · Leavenworth, WA