# NTSB investigations: Hughes Helicopters HUGHES 369D: Miscellaneous/other

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 CEN25FA307](https://openairdocs.org/ntsb/CEN25FA307.md): Hughes 369D · West Alton, MO · Accident · 2 fatal · Class 3 · Field · Final report · Aug 7, 2025 · N173AL · Destroyed
  > The pilot’s failure to maintain helicopter clearance from the powerline during the powerline maintenance operation for reasons that could not be determined.
- [NTSB ERA24LA148](https://openairdocs.org/ntsb/ERA24LA148.md): Hughes 369D · Belleville, WV · Accident · Serious injuries · Class 3 · Limited · Final report · Mar 18, 2024 · N102SU · Substantial damage
  > The ingestion of foreign object debris into the engine, which resulted in a sudden loss of engine power and a subsequent collision with trees and terrain during the forced landing.
- [NTSB CEN20CA334](https://openairdocs.org/ntsb/CEN20CA334.md): Hughes 369 · Delia, KS · Accident · No injuries · Class 4 · Data collection · Final report · Aug 5, 2020 · N104SU · Substantial damage
  > Foreign object damage sustained to the main rotor blades due to aerial tree trimming.
- [NTSB CEN18LA121](https://openairdocs.org/ntsb/CEN18LA121.md): Hughes 369D · Blair, WI · Accident · Serious injuries · Limited investigation · Final report · Mar 7, 2018 · N499SL · No damage
  > The pilot’s failure to recognize and compensate for hazards during the external load operation, which led to a collision between a lineman (external load) and a powerline.
- [NTSB GAA16CA480](https://openairdocs.org/ntsb/GAA16CA480.md): Hughes 369 · Peach Orchard, MO · Accident · No injuries · Data collection · Final report · Sep 9, 2016 · N500TN · Substantial damage
  > The helicopter pilot’s failure to maintain sufficient separation between the main rotor blade and a power line during line guard installation, which resulted in an electrical arc to the main rotor.
- [NTSB WPR14CA363](https://openairdocs.org/ntsb/WPR14CA363.md): Hughes 369D · Willows, CA · Accident · Serious injuries · Data collection · Final report · Sep 2, 2014 · N516PJ · Substantial damage
  > The pilot's failure to adequately secure cargo (a jacket), which resulted in the jacket exiting the cabin compartment and colliding with the tail rotor during cruise flight.
- [NTSB WPR13CA406](https://openairdocs.org/ntsb/WPR13CA406.md): Hughes 369D · Kalalau, HI · Accident · Minor injuries · Data collection · Final report · Sep 12, 2013 · N519PA · Substantial damage
  > The entanglement of a tarp in the helicopter's main rotor from a nearby trash bundle.
- [NTSB WPR12LA022](https://openairdocs.org/ntsb/WPR12LA022.md): Mcdonnell Douglas 500D · Colusa, CA · Accident · Minor injuries · Limited investigation · Final report · Oct 27, 2011 · N61PJ · Substantial damage
  > A total loss of engine power while maneuvering at low altitude for reasons that could not be determined because postaccident examinations did not reveal any anomalies that would have precluded normal operation. Contributing to the accident severity was the…
- [NTSB LAX08FA233](https://openairdocs.org/ntsb/LAX08FA233.md): Hughes 369D · Price, UT · Accident · 3 fatal · Field investigation · Final report · Jul 19, 2008 · N400BE · Destroyed
  > The pilot's inadequate preflight performance planning for the takeoff and the loading that exceeded the lift performance capability of the helicopter.

## 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.aircraft_model_code IN ('4470706')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s.case_mkey = x.case_mkey AND s.aircrafts_position = x.position AND s."tier2Number" = '900' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE "isDefiningEvent")))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/900/sequence?model=4470706

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