# NTSB investigations: Allison 250 SER 250HP

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.

Page 2 of 6 · 267 cases

## Cases, newest first

- [NTSB DCA08WA059](https://openairdocs.org/ntsb/DCA08WA059.md): Bell 206 L-1 · Muanda, Congo - Kinshasa · Accident · 1 fatal · Foreign investigation · May 9, 2008 · N5014V · Destroyed
- [NTSB SEA08CA091](https://openairdocs.org/ntsb/SEA08CA091.md): Bell 206B · Oxnard, CA · Accident · No injuries · Data collection · Final report · Mar 11, 2008 · N7028J · Substantial damage
  > The pilot's failure to maintain clearance with terrain during an aerial application.
- [NTSB ANC08LA040](https://openairdocs.org/ntsb/ANC08LA040.md): Bell 206L · Nikolai, AK · Accident · Minor injuries · Limited investigation · Final report · Mar 4, 2008 · N404EH · Substantial damage
  > The pilot's inadequate compensation for wind conditions, and an inadvertent loss of tail rotor effectiveness while maneuvering. A factor contributing to the accident was wind gusts.
- [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 DFW07LA171](https://openairdocs.org/ntsb/DFW07LA171.md): Bell 206L-1 · Marks, MS · Accident · Serious injuries · Limited investigation · Final report · Jul 28, 2007 · N90AE · Destroyed
  > The loss of control and hard landing as result of the loss of tail rotor effectiveness. A contributing factor was the prevailing dark night conditions.
- [NTSB DFW07LA111](https://openairdocs.org/ntsb/DFW07LA111.md): Bell 206B · Horseshoe Bay, TX · Accident · Minor injuries · Limited investigation · Final report · May 13, 2007 · N905WP · Substantial damage
  > The pilot's loss of control as result of dynamic rollover while attempting to takeoff. Facrots were the landing skid becoming snagged and the soft terrain.
- [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 MIA06LA123](https://openairdocs.org/ntsb/MIA06LA123.md): Bell 206B · Pompano Beach, FL · Accident · Minor injuries · Limited investigation · Final report · Jul 17, 2006 · N515AA · Substantial damage
  > The pilot's improper landing flare during a precautionary landing. A factor in the accident was the unusual noise as a result of an improper repaired air conditioner compressor system.
- [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 LAX06LA220](https://openairdocs.org/ntsb/LAX06LA220.md): Bell 206B · Chino Hills, CA · Accident · Minor injuries · Limited investigation · Final report · Jun 28, 2006 · N205LA · Substantial damage
  > A loss of aircraft control for undetermined reasons.
- [NTSB SEA06LA124](https://openairdocs.org/ntsb/SEA06LA124.md): Hughes 369D · Salt Lake City, UT · Accident · No injuries · Limited investigation · Final report · Jun 20, 2006 · N88SE · Substantial damage
  > A loss of rotor rpm for undetermined reasons, resulting in a hard landing on top of the commercial building over which the helicopter was working.
- [NTSB DFW06CA142](https://openairdocs.org/ntsb/DFW06CA142.md): Bell 47G-4A · Sheridan, AR · Accident · Serious injuries · Data collection · Final report · May 30, 2006 · N4086C · Substantial damage
  > The pilot's inadequate fuel management, which resulted in fuel exhaustion and a subsequent loss of engine power. A contributing factor was the lack of suitable terrain for the forced landing.
- [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 LAX05CA263](https://openairdocs.org/ntsb/LAX05CA263.md): Hughes 369D · North Las Vegas, NV · Accident · No injuries · Data collection · Final report · Aug 8, 2005 · N58431 · Substantial damage
  > the pilot's improper use of the cyclic flight control and the flight instructor's inadequate supervision of the flight.
- [NTSB CHI05LA218](https://openairdocs.org/ntsb/CHI05LA218.md): Enstrom 480 · Goshen, IN · Accident · Serious injuries · Limited investigation · Final report · Aug 5, 2005 · N480FX · Substantial damage
  > Ground resonance experienced by the pilots.
- [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 DFW05CA044](https://openairdocs.org/ntsb/DFW05CA044.md): Bell B206L-1 · Patterson, LA · Accident · No injuries · Data collection · Final report · Dec 9, 2004 · N5007F · Substantial damage
  > The loss of engine power due to fuel starvation resulting from the pilot's failure to activate the fuel boost pumps prior to takeoff. A contributing factor was that the helicopter was at an airspeed and altiutude combination (below height/velocity curve)…
- [NTSB DFW05LA017](https://openairdocs.org/ntsb/DFW05LA017.md): Bell 206B · S.Timbelier 187 · Accident · Serious injuries · Limited investigation · Final report · Nov 5, 2004 · N496RL · Destroyed
  > The loss of engine power for undetermined reasons.
- [NTSB FTW04FA186](https://openairdocs.org/ntsb/FTW04FA186.md): Bell 206 L-1 · Cameron, LA · Accident · 1 fatal · Field investigation · Final report · Jul 17, 2004 · N1078C · Destroyed
  > The helicopter's in-flight collision with water for undetermined reasons.
- [NTSB ATL04TA137](https://openairdocs.org/ntsb/ATL04TA137.md): Bell 206B · Graysville, AL · Accident · No injuries · Final report · Jun 22, 2004 · N3902W · Destroyed
  > The pilot's inadequate compensation for a tailwind and his failure to maintain directional control resulting in a loss of tail rotor effectiveness. A factor was the pilot's improper in-flight decision to hover with a tailwind.
- [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 FTW04FA029](https://openairdocs.org/ntsb/FTW04FA029.md): Bell 407 · High Island 573 · Accident · 1 fatal · Field investigation · Final report · Dec 1, 2003 · N457PH · Destroyed
  > The loss of engine power due to the failure of the 3rd stage turbine wheel and subsequent catastrophic failure of the turbine assembly.
- [NTSB FTW04CA030](https://openairdocs.org/ntsb/FTW04CA030.md): Bell 206L1 · Paris, AR · Accident · Minor injuries · Data collection · Final report · Nov 29, 2003 · N103AE · Substantial damage
  > The pilot's failure to remove the main rotor tiedown prior to engine startup. Contributing factors were the pressure induced by conditions/events, improper preflight of the aircraft, and dark night conditions,
- [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 CHI03FA259](https://openairdocs.org/ntsb/CHI03FA259.md): Bell 206L-3 · E.I. 276, LA · Accident · 3 fatal · Field investigation · Final report · Aug 13, 2003 · N41128 · Substantial damage
  > The inadequate compensation for crosswind conditions and the directional control not obtained/maintained by the pilot during takeoff. Contributing factors were the crosswind and the planned approach to position the helicopter with a crosswind in order to…
- [NTSB ANC03LA082](https://openairdocs.org/ntsb/ANC03LA082.md): Hughes 369D · Ketchikan, AK · Accident · Minor injuries · Limited investigation · Final report · Jul 21, 2003 · N1091S · Substantial damage
  > The improper installation of a bolt in the gas generator governor linkage by company maintenance personnel, which resulted in a loss of the bolt, a loss of engine power while maneuvering, and subsequent forced landing and collision with trees. Factors…
- [NTSB CHI03LA196](https://openairdocs.org/ntsb/CHI03LA196.md): Bell 206B3 · Lansing, IL · Accident · No injuries · Limited investigation · Final report · Jul 2, 2003 · N52L · Substantial damage
  > The dynamic rollover encountered by the pilot. Factors were the inadequate remedial action by the pilot due to his failure to prevent the rollover, and the inadequate facility with regard to the design of the landing platform.
- [NTSB IAD03LA015](https://openairdocs.org/ntsb/IAD03LA015.md): Bell 206L1 · Albany, KY · Accident · No injuries · Limited investigation · Final report · Nov 8, 2002 · N108AE · Substantial damage
  > The pilot's inadequate in-flight planning, which resulted in an angle of approach in relative wind conditions conducive to a loss of helicopter tail rotor effectiveness. A factor was the obstacles surrounding the landing field.
- [NTSB SEA02LA135](https://openairdocs.org/ntsb/SEA02LA135.md): McDonnell Douglas 369D · Medford, OR · Accident · Serious injuries · Limited investigation · Final report · Jul 22, 2002 · N58295 · Substantial damage
  > Power loss during cruise flight for undetermined reasons. Factors include mountainous terrain and trees.
- [NTSB NYC02TA123](https://openairdocs.org/ntsb/NYC02TA123.md): Hughes 369D · Jeffersontown, KY · Accident · No injuries · Final report · Jun 26, 2002 · N40AP · Substantial damage
  > The flight instructor's loss of lateral control when his foot slipped off the rudder pedal during a power-off, running landing.
- [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 LAX02LA178](https://openairdocs.org/ntsb/LAX02LA178.md): Bell 206L-1 · Meadview, AZ · Accident · Minor injuries · Limited investigation · Final report · May 28, 2002 · N1075S · Destroyed
  > the pilot's failure to maintain distance and altitude during landing approach, resulting in the helicopter striking the ground during approach.
- [NTSB ATL02FA062](https://openairdocs.org/ntsb/ATL02FA062.md): Eurocopter France AS355 F1 · Savannah, GA · Accident · 2 fatal · Field investigation · Final report · Mar 9, 2002 · N355D · Substantial damage
  > The pilot's failure to follow operating procedures and, experienced spatial disorientation while attempting a night landing to an offshore platform. A factor was a dark night.
- [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 LAX02LA007](https://openairdocs.org/ntsb/LAX02LA007.md): Hughes 369D · Kahoolawe Isle, HI · Accident · Serious injuries · Limited investigation · Final report · Oct 10, 2001 · N622WA · No damage
  > Inadequate visual surveillance by the pilot before takeoff resulting in liftoff with a deplaning passenger still partially aboard the helicopter. A factor in the accident was the operator's inadequate procedures.
- [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 FTW01FAMS1](https://openairdocs.org/ntsb/FTW01FAMS1.md): Bell 206B · High Island 116 · Accident · 1 fatal · Missing aircraft · Final report · Dec 27, 2000 · N83137 · Destroyed
  > undetermined, missing aircraft.
- [NTSB LAX01LA013](https://openairdocs.org/ntsb/LAX01LA013.md): Bell 206L-1 · Grand Canyon, AZ · Accident · Minor injuries · Limited investigation · Final report · Oct 14, 2000 · N2233F · Substantial damage
  > The pilot's in-flight loss of control during liftoff due to his improper planning and decisions. Related factors were the high density altitude and helicopter weight condition, and the lack of a suitable takeoff area.
- [NTSB CHI00FA266](https://openairdocs.org/ntsb/CHI00FA266.md): Fairchild Hiller FH-1100 · Valparaiso, IN · Accident · 1 fatal · Field investigation · Final report · Aug 19, 2000 · N250AD · Destroyed
  > The in-flight fracture of the main rotor mast and the separation of the main rotor. Factors to the accident were the corroded main rotor mast that resulted in fatigue.
- [NTSB MIA00WA142](https://openairdocs.org/ntsb/MIA00WA142.md): Bell 206A · Chascomus, Argentina · Accident · Minor injuries · Foreign investigation · Apr 29, 2000 · N156P · Substantial damage
- [NTSB IAD00LA002](https://openairdocs.org/ntsb/IAD00LA002.md): Loral GZ-22 · Mogadore, OH · Accident · Minor injuries · Limited investigation · Final report · Oct 28, 1999 · N4A · Substantial damage
  > The failure of the flight control system manufacturer to meet design (hardness) specifications that resulted in stripped splines.
- [NTSB MIA00FA003](https://openairdocs.org/ntsb/MIA00FA003.md): Bell 206B · Centreville, AL · Accident · 2 fatal · Field investigation · Final report · Oct 5, 1999 · N1285S · Destroyed
  > The pilot's inadequate preflight inspection of the helicopter's fuel system resulting in an in-flight loss of engine power due to fuel exhaustion as a result of overboard porting of fuel when the airframe fuel filter was left in the 'drain and locked'…
- [NTSB CHI99LA298](https://openairdocs.org/ntsb/CHI99LA298.md): Bell 206L · Cape Girardeau, MO · Accident · No injuries · Limited investigation · Final report · Aug 10, 1999 · N810F · Substantial damage
  > The inadequate preflight planning/preparation by the pilot, in that the auxiliary power unit cord was not removed. The brick wall was a contributing factor.
- [NTSB SEA99LA092](https://openairdocs.org/ntsb/SEA99LA092.md): Hughes 369D · Shelton, WA · Accident · No injuries · Limited investigation · Final report · Jun 22, 1999 · N1089Y · Substantial damage
  > The pilot's failure to maintain rotor RPM during an autorotation.
- [NTSB NYC99FA140](https://openairdocs.org/ntsb/NYC99FA140.md): Sikorsky S-76A · Jackson, KY · Accident · 4 fatal · Field investigation · Final report · Jun 15, 1999 · N2743E · Destroyed
  > the failure of the PIC to adequately supervise the SIC, and maintain a positive climb. Factors were the fog and dark night.
- [NTSB MIA99LA107](https://openairdocs.org/ntsb/MIA99LA107.md): Fairchild Hiller FH-1100 · Opp, AL · Accident · No injuries · Limited investigation · Final report · Mar 16, 1999 · N547FH · Substantial damage
  > a loss of engine power due to the failure of the engine to transmission drive shaft flex coupling, resulting in an in-flight collision with a vehicle.
- [NTSB ANC99TA029](https://openairdocs.org/ntsb/ANC99TA029.md): Bell 206L-1 · Barrow, AK · Accident · Minor injuries · Final report · Feb 24, 1999 · N785SR · Substantial damage
  > The pilot's misjudged flare while landing. Factors associated with the accident were whiteout conditions, and the snow-covered terrain.
- [NTSB LAX99TA088](https://openairdocs.org/ntsb/LAX99TA088.md): McDonnell Douglas 369D · Las Vegas, NV · Accident · No injuries · Final report · Jan 31, 1999 · N58431 · Substantial damage
  > The pilot's failure to properly judge the landing flare maneuver during a practice autorotative landing resulting in a hard landing.
- [NTSB SEA99FA018](https://openairdocs.org/ntsb/SEA99FA018.md): Hughes 369D · Taholah, WA · Accident · Minor injuries · Field investigation · Final report · Dec 8, 1998 · N1096L · Substantial damage
  > Turbine wheel failure as the result of a low-cycle fatigue crack that initiated in a beyond-limits grinding gouge. Factors include improper maintenance by unknown parties and tree stumps that prohibited a successful emergency landing.
- [NTSB FTW99LA026](https://openairdocs.org/ntsb/FTW99LA026.md): Bell 206B · Matagorda 713 · Accident · No injuries · Limited investigation · Final report · Nov 15, 1998 · N21466 · Substantial damage
  > The pilot's loss of control due to his failure to untie ground straps. A factor was his inadequate preflight inspection.

Next page: https://openairdocs.org/ntsb.md?engine=03002&page=3

## 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'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=03002&page=2

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