# NTSB investigations: Lycoming HIO-360 series: In flight collision with terrain/water

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 SEA07CA220](https://openairdocs.org/ntsb/SEA07CA220.md): Hughes 269C · Three Forks, MT · Accident · No injuries · Data collection · Final report · Jul 30, 2007 · N428MS · Substantial damage
  > The student pilot's failure to maintain control of the aircraft during autorotation. The flight instructor's inadequate supervision was a factor.
- [NTSB CHI06CA168](https://openairdocs.org/ntsb/CHI06CA168.md): Schweizer 269C · Grand Forks, ND · Accident · No injuries · Data collection · Final report · Jun 17, 2006 · N1675U · Substantial damage
  > The dual student's failure to maintain rotor speed during the recovery from the intentional autorotation and the flight instructor's delayed remedial action. Contributing factors were the flight crew's intentional autorotation and dual student's misjudged…
- [NTSB DEN05LA068](https://openairdocs.org/ntsb/DEN05LA068.md): Enstrom F-28C · Morrison, CO · Accident · No injuries · Limited investigation · Final report · Apr 13, 2005 · N5690K · Substantial damage
  > the pilot's failure to maintain rotor RPM during the approach which resulted in a landing short of the helipad.
- [NTSB CHI04LA030](https://openairdocs.org/ntsb/CHI04LA030.md): Hughes 269B · Louisville, KY · Accident · Minor injuries · Limited investigation · Final report · Nov 10, 2003 · N1093D · Substantial damage
  > The pilot's improper in-flight decision to allow the passenger to manipulate the aircraft flight controls, his failure to maintain altitude/clearance from the river, and his inadequate remedial action. A related factor was the low altitude.
- [NTSB CHI04LA015](https://openairdocs.org/ntsb/CHI04LA015.md): Schweizer 269C · Fenton, MI · Accident · 1 fatal · Limited investigation · Final report · Oct 18, 2003 · N456JP · Substantial damage
  > The intentional low altitude flight maneuvering and the ostentatious display by the pilot. The water was a factor to the accident.
- [NTSB LAX03CA264](https://openairdocs.org/ntsb/LAX03CA264.md): Hughes 269C · Columbia, CA · Accident · No injuries · Data collection · Final report · Aug 25, 2003 · N58363 · Substantial damage
  > the student pilot's improper execution of the autorotation. Also causal, was the CFI's delayed remedial action and supervision of the flight.
- [NTSB SEA03LA151](https://openairdocs.org/ntsb/SEA03LA151.md): Hughes 269C · Snohomish, WA · Accident · No injuries · Limited investigation · Final report · Jul 24, 2003 · N53KF · Substantial damage
  > The dual students failure to maintain clearance from the terrain during the go-around from a simulated autorotational flare, and the instructor pilot's failure to take adequate remedial action to keep the dual student from allowing the aircraft to impact the…
- [NTSB LAX03FA134](https://openairdocs.org/ntsb/LAX03FA134.md): Hughes 269B · Auburn, CA · Accident · 2 fatal · Field investigation · Final report · Apr 11, 2003 · N16133 · Destroyed
  > the misjudged flare maneuver by an unknown crewmember during a likely practice autorotation that resulted in an in-flight collision with terrain.
- [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 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 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 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 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 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 MIA93LA177](https://openairdocs.org/ntsb/MIA93LA177.md): Schweizer 269C · Punta Gorda, FL · Accident · No injuries · Limited investigation · Final report · Aug 18, 1993 · N95AF · Substantial damage
  > The pilot-in-command's improper use of the flight controls (cyclic and collective pitch) during a simulated autorotation with turn, resulting in an in flight collision with terrain with the tail skid and tailrotor blades.
- [NTSB LAX93FA260](https://openairdocs.org/ntsb/LAX93FA260.md): Hughes 269A · Henderson, NV · Accident · 1 fatal · Field investigation · Final report · Jun 19, 1993 · N9048R · Destroyed
  > the pilot's improper use of the collective control and his failure to maintain adequate RPM during an autorotative descent during a practice power off landing. A factor which contributed to the accident related to the pilot's lack of recent experience…
- [NTSB LAX93LA227](https://openairdocs.org/ntsb/LAX93LA227.md): Hughes 269C · Van Nuys, CA · Accident · No injuries · Limited investigation · Final report · May 26, 1993 · N58407 · Substantial damage
  > the student pilot's failure to maintain the altitude while maneuvering toward the parking area. The student pilot's lack of total experience was a factor in this accident.
- [NTSB CHI89DEV06](https://openairdocs.org/ntsb/CHI89DEV06.md): Hughes 269C · Millersville, IL · Accident · No injuries · Final report · Jun 6, 1989 · N7439F · Destroyed
  > Loss of rotor RPM for an undetermined reason during a turn to reverse direction while applying agricultural chemicals.
- [NTSB FTW89DRG06](https://openairdocs.org/ntsb/FTW89DRG06.md): Hughes 269C · Rocksprings, TX · Accident · 1 fatal · Final report · May 18, 1989 · N58228 · Destroyed
  > The pilot diverted his attention from operation of the helicopter, failed to maintian proper rotor RPM, and failed to maintain altitude (clearance) above the ground, while maneuvering at low altitude. A contributing factor was his impairment from use of a…
- [NTSB MIA89LA018](https://openairdocs.org/ntsb/MIA89LA018.md): Schweizer 269C · Arcadia, FL · Accident · No injuries · Limited investigation · Final report · Oct 28, 1988 · N75068 · Substantial damage
  > After making an apch to 'the numbers' on rwy 5, the plt decelerated the helicopter & began to air taxi to the refueling area. Subsquently, while decelerating and/or while taxiing, the tail rotor collided with terrain.
- [NTSB SEA88LA022](https://openairdocs.org/ntsb/SEA88LA022.md): Hughes 269B · Las Vegas, NV · Accident · Minor injuries · Limited investigation · Final report · Nov 24, 1987 · N22730 · Destroyed
  > During practice autorotation the pilot flared excessively high and the tail boom struck the ground. The pilot then lost control of the aircraft. The density alt was 2616 feet. A rt quartering tailwind was present.
- [NTSB MIA83LA087](https://openairdocs.org/ntsb/MIA83LA087.md): Hughes 269A · St. Petersburg, FL · Accident · No injuries · Limited investigation · Final report · Mar 18, 1983 · N9020M · Substantial damage
  > The helicopter contacted the ground with a skid during a hover and ended up in a dynamic roll over. This was a dual instructional flt and the student was at the controls in a hover at the runways end awaiting twr instructions when the right skid became stuck…
- [NTSB SEA82DA019](https://openairdocs.org/ntsb/SEA82DA019.md): Hughes 269C · S.E. Of Malta, ID · Accident · No injuries · Final report · Jan 15, 1982 · N58203 · Substantial damage
  > The purpose of the flight was for predator (coyote) control. The pilot was following a coyote at a low-altitude, moderate-speed air taxi over snow and sagebrush covered terrain. One of the aircraft's snowboards caught several sagebrush limbs and the pilot…

## 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')
    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" = 230))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41524&occurrence=230

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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.