NTSB investigations: Allison 250 SER 250HP
25 cases on aircraft whose registry engine model is Allison 250 SER 250HP, where the first occurrence was “In flight collision with object”. 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.
Cases per year
| 1984 | 2 |
|---|---|
| 1985 | 2 |
| 1986 | 2 |
| 1987 | 1 |
| 1988 | 2 |
| 1989 | 2 |
| 1990 | 1 |
| 1994 | 1 |
| 1996 | 1 |
| 1997 | 1 |
| 2001 | 2 |
| 2002 | 1 |
| 2003 | 1 |
| 2004 | 1 |
| 2005 | 2 |
| 2006 | 2 |
| 2007 | 1 |
Where
Open the mapLatest cases
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')
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"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')
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" 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 DFW08IA002Incident · No injuriesIncident investigationFinal reportBell Helicopter Textron 206L-1 · Galveston, TXThe 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 SEA07LA021Accident · 1 fatalLimited investigationFinal reportHughes 369E · Jensen, UTThe 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 CHI06FA173Accident · 1 fatalField investigationFinal reportBell 206B · Walford, IAThe pilot's failure to maintain clearance from powerlines. The powerlines were a factor.NTSB SEA05CA173Accident · No injuriesData collectionFinal reportHughes 369E · Donnelly, IDThe 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 DFW05LA180Accident · No injuriesLimited investigationFinal reportBell 430 · Gulf of MexicoThe helicopter's tail rotor blade's contact with an unknown object during landing.NTSB SEA04LA102Accident · No injuriesLimited investigationFinal reportBell 206B · Prosser, WAThe pilot's failure to maintain clearance with the power lines while maneuvering.NTSB SEA04LA005Accident · 2 fatalLimited investigationFinal reportBell 206B · Swisshome, ORThe 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 FTW02LA176Accident · No injuriesLimited investigationFinal reportBell 206L-3 · Dover, ARThe pilot's failure to maintain clearance with trees during the approach. A contributing factor was dark night light conditions.NTSB ATL02FA003Accident · 2 fatalField investigationFinal reportBell 206B · N. Wilkesboro, NCThe 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 ANC01LA030Accident · No injuriesLimited investigationFinal reportBell 206L-1 · Tyonek, AKThe pilot's failure to maintain adequate tail rotor clearance while maneuvering to land.NTSB MIA97FA070Accident · 4 fatalField investigationFinal reportBell 206-B3 · Fort Lauderdale, FLThe pilot's incapacitation by carbon monoxide from undetermined sources which led to his diminished ability to see and avoid a radio tower.NTSB SEA96LA070Accident · Minor injuriesLimited investigationFinal reportBell 206B · La Grande, ORthe pilot's failure to maintain clearance with trees after pulling up from an aerial application spray run.NTSB SEA95LA023Accident · Serious injuriesLimited investigationFinal reportFairchild Hiller FH-1100 · Yamhill, ORFailure 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 SEA91LA023Accident · No injuriesLimited investigationFinal reportHughes 369D · Mulina, ORIn-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 SEA89LA170Accident · No injuriesLimited investigationFinal reportHughes 369D · Petersburg, AKThe 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 MKC89LA188Accident · No injuriesLimited investigationFinal reportBell 206B · Park Rapids, MNThe pilot misjudged the clearance between the helicopter and the power line. The power line (transmission wire) was considered to be a contributing factor.NTSB LAX88LA304Accident · Serious injuriesLimited investigationFinal reportBell 206L-1 · Barrett Junct., CAWhile 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 MIA88FA257Accident · Serious injuriesField investigationFinal reportHughes 500 · Riviera Beach, FLThe 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 FTW87LA194Accident · Minor injuriesLimited investigationFinal reportBell 206L-1 · Eugene IslandThe 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 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 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 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 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 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.