# Final NTSB investigations: Lycoming HIO-360-G1A

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 ERA25LA255](https://openairdocs.org/ntsb/ERA25LA255.md): Schweizer 269C · Madisonville, KY · Accident · Minor injuries · Class 4 · Limited · Final report · Jul 2, 2025 · N21385 · Substantial damage
  > The pilot’s failure to take the appropriate corrective action for ground resonance, which resulted in a loss of helicopter control.
- [NTSB CEN25LA107](https://openairdocs.org/ntsb/CEN25LA107.md): Schweizer 269C-1 · Alvord, TX · Accident · No injuries · Class 3 · Limited · Final report · Feb 28, 2025 · N2027T · Substantial damage
  > A total loss of engine power for a reason that could not be determined.
- [NTSB CEN23LA301](https://openairdocs.org/ntsb/CEN23LA301.md): Schweizer 269C-1 · Titusville, FL · Accident · Minor injuries · Class 4 · Limited · Final report · Jul 10, 2023 · N21409 · Substantial damage
  > The student pilot’s failure to maintain helicopter control while on the ground when his attention was diverted for post flight activities.
- [NTSB ERA19LA245](https://openairdocs.org/ntsb/ERA19LA245.md): Schweizer 269C · Allentown, PA · Accident · Serious injuries · Class 3 · Limited · Final report · Aug 11, 2019 · N1831A · Substantial damage
  > Inadequate maintenance of the helicopter’s magnetos, which resulted in a partial loss of engine power during the initial climb due to a failure of the left magneto and malfunction of the right magneto.
- [NTSB WPR18LA265](https://openairdocs.org/ntsb/WPR18LA265.md): Schweizer 300CBi 269C1 · Granada Hills, CA · Accident · No injuries · Class 3 · Limited · Final report · Sep 15, 2018 · N2128T · Substantial damage
  > A partial loss of engine power that was the result of a loss of compression in the No. 1 and 4 cylinders due to damage and material separation from the exhaust valve heads, which resulted in a subsequent forced, hard landing. Contributing to the accident was…
- [NTSB ERA18LA068](https://openairdocs.org/ntsb/ERA18LA068.md): Schweizer 269C · Fort Lauderdale, FL · Accident · No injuries · Limited investigation · Final report · Jan 24, 2018 · N3947C · Substantial damage
  > The partial loss of engine power during the initial climb due to a stuck intake valve on the No. 4 cylinder.
- [NTSB GAA16CA045](https://openairdocs.org/ntsb/GAA16CA045.md): Schweizer 269C 1 · Mount Pocono, PA · Accident · No injuries · Data collection · Final report · Nov 4, 2015 · N21496 · Substantial damage
  > The student pilot's failure to remove the tension applied to the cyclic before takeoff, which resulted in a loss of directional control and the tail rotor striking the ground.
- [NTSB ERA14CA348](https://openairdocs.org/ntsb/ERA14CA348.md): Schweizer 269C · Titusville, FL · Accident · Minor injuries · Data collection · Final report · Jul 21, 2014 · N1830D · Substantial damage
  > The student pilot's failure to initiate the decelerative flare during autorotation and the CFI's delayed remedial action, which resulted in a hard landing.
- [NTSB ERA14LA101](https://openairdocs.org/ntsb/ERA14LA101.md): Schweizer 269C 1 · Titusville, FL · Accident · No injuries · Limited investigation · Final report · Jan 21, 2014 · N2110J · Substantial damage
  > The flight instructor’s inadvertent side-loading of the left skid while demonstrating a running landing, which resulted in a bending overstress fracture of the left skid tube and a subsequent roll-over.
- [NTSB ERA13LA180](https://openairdocs.org/ntsb/ERA13LA180.md): Schweizer 269C · Titusville, FL · Accident · No injuries · Limited investigation · Final report · Mar 19, 2013 · N2099S · Substantial damage
  > An engine failure due to the separation of the engine crankcase, which resulted from the lateral movement of the center main bearing and the subsequent blocking of the oil feed hole that supplied oil to the No. 2 connecting rod, which then led to its failure…
- [NTSB ERA12CA375](https://openairdocs.org/ntsb/ERA12CA375.md): Schweizer 269C-1 · Titusville, FL · Accident · No injuries · Data collection · Final report · May 31, 2012 · N1803R · Substantial damage
  > The flight instructor’s inadequate supervision and delayed remedial action during a simulated engine-out procedure, which resulted in a hard landing.
- [NTSB ERA11CA474](https://openairdocs.org/ntsb/ERA11CA474.md): Schweizer 269C-1 · Titusville, FL · Accident · Minor injuries · Data collection · Final report · Aug 27, 2011 · N2093U · Substantial damage
  > The student pilot's landing at an unapproved location, which resulted in a ground fire from the engine exhaust.
- [NTSB ERA11CA201](https://openairdocs.org/ntsb/ERA11CA201.md): Schweizer 269C-1 · Mount Pocono, PA · Accident · No injuries · Data collection · Final report · Mar 20, 2011 · N153HT · Substantial damage
  > The flight instructor's selection of an unsuitable landing site to practice autorotations, which resulted in an inadvertent dynamic rollover during touchdown.
- [NTSB ERA11CA012](https://openairdocs.org/ntsb/ERA11CA012.md): Schweizer 269C-1 · Titusville, FL · Accident · No injuries · Data collection · Final report · Oct 6, 2010 · N2074B · Substantial damage
  > An inadvertent in-flight collision with a bird.
- [NTSB ERA10FA283](https://openairdocs.org/ntsb/ERA10FA283.md): Schweizer 269C-1 · Boxborough, MA · Accident · 1 fatal · Field investigation · Final report · May 26, 2010 · N73SJ · Substantial damage
  > The FAA inspector's rapid reduction of power which resulted in a loss of engine power and his decision to initiate a turn during the autorotation without sufficient altitude to clear obstacles. Contributing to the accident was the FAA’s lack of comprehensive…
- [NTSB ERA10CA010](https://openairdocs.org/ntsb/ERA10CA010.md): Schweizer 269C-1 · Lewiston, ME · Accident · No injuries · Data collection · Final report · Oct 8, 2009 · N1835E · Substantial damage
  > The loss of tail rotor effectiveness (LTE) resulting from hovering the helicopter in a tailwind.
- [NTSB MIA08CA202](https://openairdocs.org/ntsb/MIA08CA202.md): Schweizer 269C-1 · Titusville, FL · Accident · Minor injuries · Data collection · Final report · Sep 25, 2008 · N1901M · Substantial damage
  > The flight instructor's delayed remedial action during a simulated autorotation.
- [NTSB ANC06CA090](https://openairdocs.org/ntsb/ANC06CA090.md): Schweizer 300C · Titusville, FL · Accident · Minor injuries · Data collection · Final report · Jul 12, 2006 · N1831A · Substantial damage
  > The failure of the certificated flight instructor (CFI) to maintain control of the helicopter, which resulted in an in-flight collision with terrain. A factor associated with the accident was the dual student's improper use of the cyclic trim.

## 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."completionStatus" = 'Completed'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41898'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41898&status=final

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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.