# NTSB investigations: Lycoming HIO-360 series: Loss of control in flight

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 ERA20CA104](https://openairdocs.org/ntsb/ERA20CA104.md): Schweizer 269C · Ormond Beach, FL · Accident · No injuries · Data collection · Final report · Feb 17, 2020 · N731TA · Substantial damage
  > The student pilot's improper pedal and cyclic input while maneuvering, which resulted in a loss of helicopter control.
- [NTSB ERA19TA005](https://openairdocs.org/ntsb/ERA19TA005.md): Enstrom F28 · Bridgeville, DE · Accident · No injuries · Final report · Oct 7, 2018 · N5691Y · Substantial damage
  > The pilot's mismanagement of collective pitch control during takeoff from an area with numerous obstacles, which resulted in the helicopter entering a low rotor rpm state and a forced hard landing.
- [NTSB GAA18CA159](https://openairdocs.org/ntsb/GAA18CA159.md): Hughes 269 · Jacksonville, FL · Accident · No injuries · Data collection · Final report · Mar 10, 2018 · N9020M · Substantial damage
  > The pilot’s failure to maintain rotor rpm during a practice autorotation, which resulted in ground contact and a dynamic rollover.
- [NTSB CEN16FA315](https://openairdocs.org/ntsb/CEN16FA315.md): Hughes 269C · Howe, TX · Accident · 1 fatal · Field investigation · Final report · Aug 10, 2016 · N9277R · Substantial damage
  > The improper execution of an autorotation following the loss of engine power, which resulted in an uncontrolled descent into terrain. Contributing to the accident was the flight instructor's lack of remedial action during the autorotation.
- [NTSB CEN16FA304](https://openairdocs.org/ntsb/CEN16FA304.md): Schweizer 269C 1 · Jeanerette, LA · Accident · 1 fatal · Field investigation · Final report · Aug 3, 2016 · N1549W · Substantial damage
  > The pilot's loss of helicopter control for reasons that could not be determined based on available evidence.
- [NTSB CEN15WA162](https://openairdocs.org/ntsb/CEN15WA162.md): Hughes 269A · Oresten, Sweden · Accident · No injuries · Foreign investigation · Feb 6, 2015 · N90584 · Substantial damage
- [NTSB WPR13CA160](https://openairdocs.org/ntsb/WPR13CA160.md): Hughes 269C · Rialto, CA · Accident · No injuries · Data collection · Final report · Mar 25, 2013 · N90570 · Substantial damage
  > The student pilot’s failure to maintain helicopter control while maneuvering in a hover.
- [NTSB ERA12CA357](https://openairdocs.org/ntsb/ERA12CA357.md): Hughes TH-55 · Pittsfield, PA · Accident · No injuries · Data collection · Final report · May 19, 2012 · N74914 · Substantial damage
  > The student pilot's failure to maintain helicopter control during an encounter with loss of tail rotor effectiveness.
- [NTSB WPR11LA325](https://openairdocs.org/ntsb/WPR11LA325.md): Hughes 269C · Wenatchee, WA · Accident · Minor injuries · Limited investigation · Final report · Jul 12, 2011 · N3623Z · Substantial damage
  > The pilot's failure to maintain control while hovering out of ground effect at low altitude, which resulted in the helicopter settling into trees.
- [NTSB CEN11CA442](https://openairdocs.org/ntsb/CEN11CA442.md): Schweizer 269C · Katy, TX · Accident · No injuries · Data collection · Final report · Jul 3, 2011 · N72DC · Substantial damage
  > The pilot's failure to maintain adequate rotor rpm during a low-altitude maneuvering flight.
- [NTSB CEN11LA397](https://openairdocs.org/ntsb/CEN11LA397.md): Schweizer 269C · Grand Forks, ND · Accident · No injuries · Limited investigation · Final report · Jun 15, 2011 · N2077E · Substantial damage
  > The student pilot's inadequate recovery from an autorotation and the CFI's delayed remedial action.
- [NTSB WPR11CA250](https://openairdocs.org/ntsb/WPR11CA250.md): Schweizer 269C · Las Vegas, NV · Accident · Serious injuries · Data collection · Final report · Jun 4, 2011 · N6128U · Substantial damage
  > The pilot's failure to maintain adequate clearance from terrain while attempting a transition from hovering flight to forward flight over a mesa in windy, downdraft conditions.
- [NTSB WPR10CA442](https://openairdocs.org/ntsb/WPR10CA442.md): Schweizer 269C · Caldwell, ID · Accident · No injuries · Data collection · Final report · Aug 31, 2010 · N1534C · Substantial damage
  > The failure of both pilots to maintain adequate main rotor RPM, the flight instructor's delayed remedial actions, and inadequate supervision of the flight.
- [NTSB CEN10CA390](https://openairdocs.org/ntsb/CEN10CA390.md): Schweizer 269C · Santa Rosa, NM · Accident · No injuries · Data collection · Final report · Jul 9, 2010 · N9421G · Substantial damage
  > The student pilot's failure to maintain control of the helicopter while landing in gusty surface winds conditions. Contributing to the accident was the flight instructor's inadequate monitoring of the flight.
- [NTSB ERA09CA349](https://openairdocs.org/ntsb/ERA09CA349.md): Schweizer 269C-1 · Titusville, FL · Accident · No injuries · Data collection · Final report · Jun 13, 2009 · N1565B · Substantial damage
  > The pilot's failure to maintain control of the helicopter during hover, resulting in a rollover.
- [NTSB CEN09LA202](https://openairdocs.org/ntsb/CEN09LA202.md): Hughes 269C · El Indio, TX · Accident · Serious injuries · Limited investigation · Final report · Mar 11, 2009 · N64731 · Substantial damage
  > The pilot's failure to maintain control of the helicopter while attempting to land on a transport trailer in heavy rain and gusting winds.
- [NTSB CHI08CA267](https://openairdocs.org/ntsb/CHI08CA267.md): Hughes 269A · Bremen, OH · Accident · No injuries · Data collection · Final report · Aug 23, 2008 · N2256W · Substantial damage
  > The pilot's failure to maintain sufficient main rotor speed during the quick-stop maneuver. Contributing to the accident was the drainage ditch.
- [NTSB DFW08CA114](https://openairdocs.org/ntsb/DFW08CA114.md): Hughes 269A · Killeen, TX · Accident · No injuries · Data collection · Final report · Apr 23, 2008 · N9064N · Substantial damage
  > The pilot's failure to maintain main rotor RPM and a safe rate of descent during the autorotation. A contributing factor was the gusty winds.
- [NTSB LAX08CA069](https://openairdocs.org/ntsb/LAX08CA069.md): Schweizer 269C · Las Vegas, NV · Accident · Minor injuries · Data collection · Final report · Feb 29, 2008 · N958CP · Substantial damage
  > The certificated flight instructor's delayed remedial action, and inadequate supervision while landing on a pinnacle. Factors contributing to the accident were the lack of suitable terrain for a forced landing, and the student's failure to maintain rotor rpm.

## 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_events.parquet' e WHERE e.case_mkey = x.case_mkey AND e.aircrafts_position = x.position AND e."isDefiningEvent" AND e."tier2Number" = '240'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/240/cases?engine=41524

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