# NTSB investigations: Hughes Helicopters HUGHES 369D, 1997

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 SEA97LA118](https://openairdocs.org/ntsb/SEA97LA118.md): Hughes 369D · Moclips, WA · Accident · No injuries · Limited investigation · Final report · May 21, 1997 · N8306F · Substantial damage
  > Inadequate installation of the fuel control by company maintenance personnel and a loose nut on a line. A disconnected Pc line was a factor.
- [NTSB LAX97LA176](https://openairdocs.org/ntsb/LAX97LA176.md): Hughes 369D · Puako, HI · Accident · 2 fatal · Limited investigation · Final report · May 11, 1997 · N5105N · Destroyed
  > erosion of second stage stator vanes, inadequate maintenance inspection for the erosion, and subsequent fatigue failure of a stator vane, which resulted in loss of engine power and a forced landing on mountainous/hilly terrain. Also causal was: the pilot's…
- [NTSB LAX97FA107](https://openairdocs.org/ntsb/LAX97FA107.md): Hughes 369D · Milolii, HI · Accident · Serious injuries · Field investigation · Final report · Feb 21, 1997 · N505RM · Substantial damage
  > failure of the tail rotor for undetermined reason(s), resulting in tail rotor imbalance, separation of the tail rotor, and an autorotative landing on rough terrain with high vegetation. The lack of suitable terrain for a forced landing was a related factor.
- [NTSB LAX97GA105](https://openairdocs.org/ntsb/LAX97GA105.md): McDonnell Douglas 369D · Santee, CA · Accident · 1 fatal · Final report · Feb 17, 1997 · N5200Y · Substantial damage
  > Spatial disorientation and temporary visual impairment that led to a loss of aircraft control as result of difficulty to light adaptivity. Contributing was the crew coordination and inadequate night flight recurrency training.

## 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 year(c."eventDate") = 1997
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('4470706'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=4470706&year=1997

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