# NTSB investigations: Hughes Helicopters HUGHES 369D: Low altitude operation/event

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 ERA23LA326](https://openairdocs.org/ntsb/ERA23LA326.md): Hughes 369 · Elberon, VA · Accident · Serious injuries · Class 4 · Limited · Final report · Aug 5, 2023 · N353AH · Substantial damage
  > The pilot’s failure to maintain clearance from a power line structure arm, which resulted in main rotor blade contact.
- [NTSB CEN23LA308](https://openairdocs.org/ntsb/CEN23LA308.md): Hughes 369D · Atchison, KS · Accident · No injuries · Class 4 · Limited · Final report · Jul 13, 2023 · N533DR · Substantial damage
  > The pilot’s failure to adequately survey a field for obstructions prior to a low-level aerial application pass, which resulted in an impact with a powerline.
- [NTSB CEN21LA165](https://openairdocs.org/ntsb/CEN21LA165.md): Hughes 369D · Lake City, KS · Accident · No injuries · Class 4 · Limited · Final report · Mar 25, 2021 · N41AJ · Substantial damage
  > The pilot’s failure to maintain clearance from power lines during power line maintenance.
- [NTSB CEN21LA139](https://openairdocs.org/ntsb/CEN21LA139.md): Hughes 369 · Kaufman, TX · Accident · No injuries · Class 4 · Limited · Final report · Feb 26, 2021 · N58431 · Substantial damage
  > The pilot’s failure to maintain clearance from a power line during low-level maneuvering.
- [NTSB CEN19FA020](https://openairdocs.org/ntsb/CEN19FA020.md): Hughes 369 · McDougal, AR · Accident · 1 fatal · Class 2 · Field · Final report · Nov 2, 2018 · N5187S · Destroyed
  > The pilot's failure to maintain the helicopter's clearance from the powerline structure while hovering in gusty wind conditions, which resulted in an inadvertent collision with the structure and an uncontrolled descent into terrain.
- [NTSB GAA18CA506](https://openairdocs.org/ntsb/GAA18CA506.md): Hughes 369 · Ridgeway, PA · Accident · No injuries · Data collection · Final report · Aug 22, 2018 · N89ZC · Substantial damage
  > The pilot's failure to maintain clearance from power lines during an aerial observation flight.
- [NTSB WPR18FA074](https://openairdocs.org/ntsb/WPR18FA074.md): Hughes 369D · Pomeroy, WA · Accident · 1 fatal · Field investigation · Final report · Jan 27, 2018 · N369TH · Substantial damage
  > A loss of control following the gunner's failure to ensure that the net maintained clearance from the tail rotor.
- [NTSB CEN17LA314](https://openairdocs.org/ntsb/CEN17LA314.md): Hughes 369D · Villa Grove, CO · Accident · Serious injuries · Limited investigation · Final report · Aug 10, 2017 · N58424 · Substantial damage
  > The pilot’s failure to maintain main rotor clearance from a power line tower during low-level maneuvering.
- [NTSB ERA13LA057](https://openairdocs.org/ntsb/ERA13LA057.md): Hughes 369D · Corning, NY · Accident · 2 fatal · Limited investigation · Final report · Nov 15, 2012 · N369AW · Substantial damage
  > The pilot’s failure to maintain adequate altitude while conducting a power line aerial observation flight, which resulted in an in-flight collision with wires. Contributing to the accident was the pilot’s lack of total experience in the type of operation.
- [NTSB ERA09LA194](https://openairdocs.org/ntsb/ERA09LA194.md): Hughes 369D · Lee, MA · Accident · Serious injuries · Limited investigation · Final report · Mar 10, 2009 · N369RT · Substantial damage
  > The pilot's failure to maintain clearance from the overhead wire.

## 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" = '220' 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/220/sequence?model=4470706

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