# NTSB investigations: Lycoming HIO-360 series

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 4 of 8 · 390 cases

## Cases, newest first

- [NTSB LAX02LA169](https://openairdocs.org/ntsb/LAX02LA169.md): Enstrom F-28C · Stockton, CA · Accident · Serious injuries · Limited investigation · Final report · May 20, 2002 · N51716 · Substantial damage
  > The pilot's failure to maintain an adequate clearance from the water tower during takeoff. Also causal was the pilot's selection of a confined area for the landing and subsequent takeoff.
- [NTSB LAX02LA161](https://openairdocs.org/ntsb/LAX02LA161.md): Schweizer 269C · Phoenix, AZ · Accident · Minor injuries · Limited investigation · Final report · May 13, 2002 · N577TA · Substantial damage
  > the CFI's failure to maintain an adequate airspeed resulted in a settling with power, and the CFI's failure to take remedial action. A factor in the accident was the high density altitude.
- [NTSB SEA02LA075](https://openairdocs.org/ntsb/SEA02LA075.md): Enstrom F-28C · Hot Springs, MT · Accident · No injuries · Limited investigation · Final report · Apr 20, 2002 · N51769 · Substantial damage
  > The pilot's failure to adequately compensate for unfavorable wind conditions. Factors include unfavorable/shifting winds, and a tailwind gust.
- [NTSB LAX02LA137](https://openairdocs.org/ntsb/LAX02LA137.md): Schweizer 269C · Scottsdale, AZ · Accident · No injuries · Limited investigation · Final report · Apr 14, 2002 · N324PH · Substantial damage
  > The flight instructor's inadequate remedial action following the onset of ground resonance.
- [NTSB FTW02LA104](https://openairdocs.org/ntsb/FTW02LA104.md): Hughes 269A-1 · Fort Collins, CO · Accident · No injuries · Limited investigation · Final report · Mar 27, 2002 · N8942F · Substantial damage
  > the flight instructor's failure to maintain control of the helicopter while hovering. Contributing factors were the tailwind and gusty wind conditions.
- [NTSB MIA02LA070](https://openairdocs.org/ntsb/MIA02LA070.md): Hughes 269C · Bessemer, AL · Accident · No injuries · Limited investigation · Final report · Mar 24, 2002 · N7490F · Substantial damage
  > The failure of the flight instructor to adequately monitor the student's rotorcraft control, resulting in an abrupt cyclic input causing a tail rotor strike of the terrain while entering a hover, and the resulting rollover during an uncontrolled descent.
- [NTSB NYC01LA206](https://openairdocs.org/ntsb/NYC01LA206.md): Schweizer 300C · Cicero, NY · Accident · Minor injuries · Limited investigation · Final report · Aug 8, 2001 · N1281R · Substantial damage
  > The pilot's failure to maintain directional control while hovering, and the CFI's delayed remedial action.
- [NTSB IAD01LA095](https://openairdocs.org/ntsb/IAD01LA095.md): Hughes 269C · Lewiston, NY · Accident · No injuries · Limited investigation · Final report · Aug 7, 2001 · N3626B · Substantial damage
  > The pilot's failure to maintain rotor rpm during the simulated forced landing. Also causal in the accident was the failure of both pilots to recognize the total loss of engine power and the CFI's inadequate remedial actions. A factor in the accident was the…
- [NTSB CHI01FA257](https://openairdocs.org/ntsb/CHI01FA257.md): Schweizer 269C · Waterloo, IN · Accident · 2 fatal · Field investigation · Final report · Aug 5, 2001 · N6129M · Substantial damage
  > Aircraft control not maintained for undetermined reasons.
- [NTSB CHI01LA215](https://openairdocs.org/ntsb/CHI01LA215.md): Schweizer 269C · Walker, MN · Accident · Minor injuries · Limited investigation · Final report · Jul 15, 2001 · N61434 · Substantial damage
  > the loss of engine power for undetermined reasons during takeoff. Factors were the vehicles, the unsuitable terrain the pilot encountered, and the low altitude of the helicopter at the time of the loss of engine power.
- [NTSB NYC01LA167](https://openairdocs.org/ntsb/NYC01LA167.md): Hughes 269A · Clay, NY · Accident · Minor injuries · Limited investigation · Final report · Jul 9, 2001 · N7028V · Substantial damage
  > Failure of the left aft cluster fitting due to a fatigue crack. Factors in the accident were the mechanic's failure to identify the crack at the last annual inspection, and the pilot's failure to identify the crack during the last daily inspection
- [NTSB MIA01LA153](https://openairdocs.org/ntsb/MIA01LA153.md): Enstrom F28A · Double Springs, AL · Accident · Minor injuries · Limited investigation · Final report · Jun 5, 2001 · N9565 · Substantial damage
  > The failure of the pilot to maintain clearance between the skid and trailer while attempting to lift from a trailer resulting in dynamic roll-over.
- [NTSB FTW01LA103](https://openairdocs.org/ntsb/FTW01LA103.md): Joe Underwood Lazer Z · Bossier City, LA · Accident · Serious injuries · Limited investigation · Final report · Apr 22, 2001 · N363WB · Substantial damage
  > the pilot's failure to maintain control during the low level maneuver. A contribiting factor was the windshear.
- [NTSB LAX01LA121](https://openairdocs.org/ntsb/LAX01LA121.md): Schweizer 269C · Ojai, CA · Accident · Minor injuries · Limited investigation · Final report · Mar 19, 2001 · N6123A · Substantial damage
  > A loss of engine power for undetermined reasons.
- [NTSB LAX01LA120](https://openairdocs.org/ntsb/LAX01LA120.md): Enstrom F-28C · Hollister, CA · Accident · Minor injuries · Limited investigation · Final report · Mar 18, 2001 · N637H · Destroyed
  > the pilot's inadequate use of the antitorque controls and subsequent failure to maintain directional control of the helicopter during the takeoff initial climb.
- [NTSB MIA01LA097](https://openairdocs.org/ntsb/MIA01LA097.md): Enstrom F-28C · Orlando, FL · Accident · No injuries · Limited investigation · Final report · Mar 11, 2001 · N5687H · Destroyed
  > a fire due to a broken and separated turbocharger exhaust which allowed hot exhaust to ignite the engine shroud.
- [NTSB LAX01LA053](https://openairdocs.org/ntsb/LAX01LA053.md): Hughes 269C · Carlsbad, CA · Accident · No injuries · Limited investigation · Final report · Dec 4, 2000 · N1097N · Substantial damage
  > The CFI's inadequate supervision and failure to maintain control of the helicopter during a practice autorotation. A contributing factor was the student's improper in-flight planning/decision.
- [NTSB SEA01LA003](https://openairdocs.org/ntsb/SEA01LA003.md): Enstrom F-28F · Twin Falls, ID · Accident · No injuries · Limited investigation · Final report · Oct 10, 2000 · N223RS · Substantial damage
  > The pilot's failure to maintain adequate rotor rpm. Unsuitable terrain was selected for the maintenance test flight operation.
- [NTSB LAX00TA355](https://openairdocs.org/ntsb/LAX00TA355.md): Hughes TH-55A · Phoenix, AZ · Accident · No injuries · Final report · Sep 29, 2000 · N331SD · Substantial damage
  > the flight instructor's misjudged flare during a simulated autorotation, which led to a hard landing.
- [NTSB LAX00LA276](https://openairdocs.org/ntsb/LAX00LA276.md): Schweizer 269C · Cave Creek, AZ · Accident · No injuries · Limited investigation · Final report · Jul 19, 2000 · N577TA · Substantial damage
  > The pilot's inadequate in-flight planning/decision to attempt a hover in atmospheric conditions and over terrain that would require maximum helicopter performance, and which would leave no viable alternate actions in the event of difficulties.
- [NTSB IAD00LA056](https://openairdocs.org/ntsb/IAD00LA056.md): Enstrom F28C · Ravenna, OH · Accident · Minor injuries · Limited investigation · Final report · Jul 1, 2000 · N20PZ · Substantial damage
  > the student pilot's loss of helicopter control after suffering a stroke in flight.
- [NTSB IAD00LA052](https://openairdocs.org/ntsb/IAD00LA052.md): Hughes 269A · Mansfield, NJ · Accident · Minor injuries · Limited investigation · Final report · Jun 16, 2000 · N9014N · Substantial damage
  > The pilot's failure to comply with published emergency procedures. A factor in the accident was the pilot's inadequate preflight planning which resulted in a take-off with the inadequate amount of fuel for the flight.
- [NTSB LAX00LA226](https://openairdocs.org/ntsb/LAX00LA226.md): Hughes 269C · Santa Clarita, CA · Accident · No injuries · Limited investigation · Final report · Jun 14, 2000 · N9692F · Substantial damage
  > Settling with power precipitated by a wind direction change during the approach to land sequence and the check pilot's delayed remedial action to correct the event. Factors in the accident were crew resource management coordination concerning flight control…
- [NTSB SEA00LA103](https://openairdocs.org/ntsb/SEA00LA103.md): Enstrom F-28C · Kennewick, WA · Accident · No injuries · Limited investigation · Final report · Jun 8, 2000 · N80193 · Substantial damage
  > The pilot's exceedance of the helicopter's hovering capabilities in a downwind hover. Factors included tailwind conditions, the pilot's lack of experience in the type of operation being conducted, and trees in the area where the helicopter settled.
- [NTSB DEN00LA083](https://openairdocs.org/ntsb/DEN00LA083.md): Hughes 269C · Loveland, CO · Accident · No injuries · Limited investigation · Final report · May 3, 2000 · N1098B · Substantial damage
  > The pilot misjudged the run on landing during a full autorotation. Factors were a total loss of power for unknown reasons and soft terrain.
- [NTSB LAX00LA181](https://openairdocs.org/ntsb/LAX00LA181.md): Hughes 269C · Rialto, CA · Accident · Minor injuries · Limited investigation · Final report · May 1, 2000 · N5395S · Substantial damage
  > The student's misjudged altitude and failure to maintain rotor rpm while practicing an autorotation, and, the instructor's delayed remedial corrective action and inadequate supervision of the flight.
- [NTSB MIA00GA121](https://openairdocs.org/ntsb/MIA00GA121.md): Hughes 269C · Del Rio, TX · Accident · 2 fatal · Final report · Mar 27, 2000 · N1110N · Destroyed
  > An in-flight loss of control while maneuvering for undetermined reasons resulting in an in-flight collision with terrain. A factor in the accident was the in-flight loss of engine power and rotor rpm.
- [NTSB FTW00LA105](https://openairdocs.org/ntsb/FTW00LA105.md): Schweizer 300C · New Ulm, TX · Accident · No injuries · Limited investigation · Final report · Mar 26, 2000 · N698SM · Substantial damage
  > The pilot's inadequate in-flight evaluation of the landing area, which resulted in the separation of the main rotor system as a result of foreign object damage.
- [NTSB MIA00GA057](https://openairdocs.org/ntsb/MIA00GA057.md): Hughes OH-6A · Fort Myers, FL · Accident · Serious injuries · Final report · Dec 20, 1999 · N72LC · Substantial damage
  > improper maintenance inspection of the helicopter by unknown maintenance personnel, resulting in a worn control rod bearing being continued in service, and subsequent separation, resulting in an in-flight loss of control and a crash.
- [NTSB SEA00FA014](https://openairdocs.org/ntsb/SEA00FA014.md): Enstrom F28C · Pendleton, OR · Accident · 1 fatal · Field investigation · Final report · Nov 2, 1999 · N635H · Destroyed
  > Failure to maintain clearance from the runway surface while maneuvering at low altitude, and inadequate remedial action after the tail rotor struck the surface.
- [NTSB NYC99LA217](https://openairdocs.org/ntsb/NYC99LA217.md): Hughes 269C · Utica, NY · Accident · No injuries · Limited investigation · Final report · Sep 1, 1999 · N58397 · Substantial damage
  > The pilot's failure to maintain control of the helicopter while maneuvering, which resulted in a hard landing. A factor in this accident was the pilot's lack of total experience in helicopters.
- [NTSB SEA99FA168](https://openairdocs.org/ntsb/SEA99FA168.md): Schweizer 269C · Westport, OR · Accident · 1 fatal · Field investigation · Final report · Aug 8, 1999 · N383T · Destroyed
  > The pilot's failure to maintain clearance from terrain. Factors include low clouds and visibility and near-night light conditions.
- [NTSB DEN99LA092](https://openairdocs.org/ntsb/DEN99LA092.md): Hughes 269A · Parkman, WY · Accident · Minor injuries · Limited investigation · Final report · Jun 1, 1999 · N7052L · Substantial damage
  > The pilot's inadequate in-flight planning by exceeding the helicopter's performance climb capability. Factors were the downdraft encountered during initial climb following takeoff, and the high density altitude.
- [NTSB SEA99LA048](https://openairdocs.org/ntsb/SEA99LA048.md): Enstrom F-28C · Pendleton, OR · Accident · No injuries · Limited investigation · Final report · Apr 7, 1999 · N51770 · Substantial damage
  > A loss of power due to water contamination of the fuel. Factors include the inability of the helicopter to perform a successful autorotation immediately after takeoff.
- [NTSB NYC99LA082](https://openairdocs.org/ntsb/NYC99LA082.md): Schweizer 269C · Westerville, OH · Accident · Serious injuries · Limited investigation · Final report · Mar 29, 1999 · N15SS · Substantial damage
  > The failure of the pilot to maintain control of the helicopter.
- [NTSB CHI99LA006](https://openairdocs.org/ntsb/CHI99LA006.md): Schweizer 269C · Oshkosh, NE · Accident · No injuries · Limited investigation · Final report · Oct 10, 1998 · N151KC · Substantial damage
  > the pilot's failure to maintain control of the helicopter. Factors associated with the accident were the high winds, low altitude at which the pilot was maneuvering and the uneven terrain which the helicopter contacted.
- [NTSB CHI98LA332](https://openairdocs.org/ntsb/CHI98LA332.md): Schweizer 269C · Decker, IN · Accident · No injuries · Limited investigation · Final report · Sep 4, 1998 · N75068 · Substantial damage
  > The pilot's failure to maintain obstacle clearance resulting in a collision with a fence.
- [NTSB FTW98LA362](https://openairdocs.org/ntsb/FTW98LA362.md): Hughes 269C · Houston, TX · Accident · Minor injuries · Limited investigation · Final report · Aug 17, 1998 · N1103R · Substantial damage
  > The pilot's failure to refuel the helicopter which resulted in the loss of engine power due to fuel exhaustion. A factor was the lack of suitable terrain for the forced landing.
- [NTSB MIA98LA221](https://openairdocs.org/ntsb/MIA98LA221.md): Enstrom F-28F · Marco Island, FL · Accident · No injuries · Limited investigation · Final report · Aug 12, 1998 · N19BZ · Substantial damage
  > The pilot's inadequate fuel management which led to fuel exhaustion. A related factor was the pilot's improper use of the flight controls during autorotation.
- [NTSB ANC98LA109](https://openairdocs.org/ntsb/ANC98LA109.md): Enstrom F-28F · Skwentna, AK · Accident · No injuries · Limited investigation · Final report · Jul 25, 1998 · N8622U · Substantial damage
  > A loss of engine power due to a fractured number three cylinder intake manifold flange, and the pilot's inability to maintain the proper rate of descent during the autorotation flare. A contributing factor associated with the accident was the downwind…
- [NTSB FTW98LA279](https://openairdocs.org/ntsb/FTW98LA279.md): Schweizer 269C · San Angelo, TX · Accident · No injuries · Limited investigation · Final report · May 20, 1998 · N41TH · Substantial damage
  > The improper touchdown executed by the flight instructor, which resulted in the tail rotor impacting the ground.
- [NTSB CHI98LA166](https://openairdocs.org/ntsb/CHI98LA166.md): Enstrom F28 · West Chicago, IL · Accident · No injuries · Limited investigation · Final report · May 14, 1998 · N86238 · Substantial damage
  > the student pilot attempting a tailwind landing and improper compensation for the wind resulting in too high of a sink rate and the hard landing.
- [NTSB ATL98LA065](https://openairdocs.org/ntsb/ATL98LA065.md): Schweizer 269C · San Juan, PR · Accident · No injuries · Limited investigation · Final report · Apr 27, 1998 · N61193 · Substantial damage
  > The pilot's failure to adequately secure the cargo strap which became entangled in the tail rotor, leading to a loss of the tail rotor control. This was followed by an improperly executed emergency procedure and an in-flight collision with the ground. A…
- [NTSB ANC98LA037](https://openairdocs.org/ntsb/ANC98LA037.md): Enstrom F-28F · Haines, AK · Accident · Minor injuries · Limited investigation · Final report · Apr 12, 1998 · N199LB · Substantial damage
  > The pilot flaring too low during an improper practice autorotation.
- [NTSB MIA98LA127](https://openairdocs.org/ntsb/MIA98LA127.md): Schweizer 269-C · Ormond Beach, FL · Accident · No injuries · Limited investigation · Final report · Apr 8, 1998 · N7509E · Substantial damage
  > The CFI's inadequate supervision and poor communication which led the rated student pilot to roll the throttle off, and the CFI's subsequent failure to apply forward cyclic to increase airspeed which resulted in the subsequent hard landing and roll over.
- [NTSB SEA98FA055](https://openairdocs.org/ntsb/SEA98FA055.md): Enstrom F28F · Baker, OR · Accident · No injuries · Field investigation · Final report · Mar 30, 1998 · N171HH · Substantial damage
  > Fatigue failure of the steel tubing pylon structure. Factors include inadequate inspection by maintenance personnel of damage after a previous accident.
- [NTSB FTW98LA129](https://openairdocs.org/ntsb/FTW98LA129.md): Enstrom F-28C-2 · Broomfield, CO · Accident · No injuries · Limited investigation · Final report · Feb 15, 1998 · N5693M · Substantial damage
  > water contamination in the fuel, which resulted in loss of engine power and a forced (autorotative) landing. Factors relating to the accident were: darkness; and a high obstruction in the emergency landing area.
- [NTSB FTW98TA104](https://openairdocs.org/ntsb/FTW98TA104.md): Hughes 269C · Brackettville, TX · Accident · Minor injuries · Final report · Jan 22, 1998 · N1093N · Substantial damage
  > failure of splines on the drive shaft coupling after separation of the forward bubber boot and loss of lubrication (grease), which resulted in a disconnect of the rotor drive system and an autorotation/forced landing. Lack of suitable terrain in the forced…
- [NTSB FTW98LA084](https://openairdocs.org/ntsb/FTW98LA084.md): Hughes 269C · Riviera, TX · Accident · No injuries · Limited investigation · Final report · Jan 2, 1998 · N1091Y · Substantial damage
  > The total loss of engine power due to a fatigue failure of the crankshaft for undetermined reason. A factor was the lack of suitable terrain for the forced landing.
- [NTSB ATL98LA021](https://openairdocs.org/ntsb/ATL98LA021.md): Hughes TH-55 · Bushnell, FL · Accident · No injuries · Limited investigation · Final report · Dec 9, 1997 · N74914 · Substantial damage
  > The pilot's failure to maintain clearance from the trees during a hover. A factor was the pilot's diverted attention.

Next page: https://openairdocs.org/ntsb.md?engine=41524&page=5

## 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 ('41524'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41524&page=4

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