# NTSB investigations: Hughes 269C, WA

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 WPR23LA105](https://openairdocs.org/ntsb/WPR23LA105.md): Hughes 269C · Yakima, WA · Accident · No injuries · Class 4 · Limited · Final report · Feb 6, 2023 · N7452F · Substantial damage
  > The pilot's failure to see and avoid a powerline while flying at low altitude over a river.
- [NTSB WPR15FA204](https://openairdocs.org/ntsb/WPR15FA204.md): Hughes 269C · Asotin, WA · Accident · 2 fatal · Field investigation · Final report · Jul 1, 2015 · N9490F · Destroyed
  > The pilot's failure to maintain adequate clearance from power lines while maneuvering in a canyon.
- [NTSB WPR14LA340](https://openairdocs.org/ntsb/WPR14LA340.md): Hughes 269C · Darrington, WA · Accident · No injuries · Limited investigation · Final report · Aug 11, 2014 · N7432F · Substantial damage
  > Maintenance personnel’s failure to secure the throttle mount bracket during a recent engine installation, which resulted in the loss of throttle movement and an inability to control engine power.
- [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 SEA03LA156](https://openairdocs.org/ntsb/SEA03LA156.md): Hughes 269C · Marblemount, WA · Accident · No injuries · Limited investigation · Final report · Jul 25, 2003 · N500HS · Substantial damage
  > The partial failure of a magneto during hover taxi over water, leading to a forced landing in shallow water near the shoreline. Factors include the aircraft being over a lake at the time that the partial loss of power made it impossible to keep it airborne.
- [NTSB SEA96FA130](https://openairdocs.org/ntsb/SEA96FA130.md): Hughes 269C · Eldon, WA · Accident · 1 fatal · Field investigation · Final report · Jun 19, 1996 · N7400F · Destroyed
  > fatigue failure of the connecting rod cap, which resulted in loss of engine power and ditching at sea.
- [NTSB SEA95LA097](https://openairdocs.org/ntsb/SEA95LA097.md): Hughes 269C · Lamont, WA · Accident · Serious injuries · Limited investigation · Final report · May 10, 1995 · N7443F · Substantial damage
  > Undetermined loss of engine power and an inadequate autorotation.
- [NTSB SEA87LA109](https://openairdocs.org/ntsb/SEA87LA109.md): Hughes 269C · Vancouver, WA · Accident · Minor injuries · Limited investigation · Final report · Jun 3, 1987 · N9606F · Destroyed
  > During a practice run-on landing the aircraft started to vibrate violently and an almost simultaneous fire occurred. Both pilots and an eyewitness stated that the run on landing was very smooth. Both pilots stated that something mechanical let loose during…
- [NTSB SEA85LA079](https://openairdocs.org/ntsb/SEA85LA079.md): Hughes 269C · Elma, WA · Accident · No injuries · Limited investigation · Final report · Mar 20, 1985 · N9592F · Substantial damage
  > Just prior to lift-off a vibration accompanied by lateral rocking occurred. Although the plt brought the power to idle. The helicopter had already started to come apart. During engine examination it was found that the ground resonance occurred due to under to…
- [NTSB SEA84LA153](https://openairdocs.org/ntsb/SEA84LA153.md): Hughes 269C · Mt. St. Helens, WA · Accident · Minor injuries · Limited investigation · Final report · Jul 2, 1984 · N58397 · Destroyed
  > This accident occurred at the 5500 ft level on Mt. St. Helens. Density alt at the time was 7500 ft. at aprx 40-50 ft aglengine and rotor RPM began to decay rapidly. The acft landed hard on a rock ledge with one skid partially off the ledge. As rotor RPM…
- [NTSB SEA74DYE17](https://openairdocs.org/ntsb/SEA74DYE17.md): Hughes 269C · Eagle Lake, WA · Accident · No injuries · Closed · Sep 16, 1973 · N8955F · Substantial damage
- [NTSB SEA72DYG05](https://openairdocs.org/ntsb/SEA72DYG05.md): Hughes 269C · Pullman, WA · Accident · No injuries · Closed · Jul 30, 1971 · N9641F · Destroyed

## 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."eventStateOrRegion" = 'WA' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('4470504'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=4470504&state=WA

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