# NTSB investigations: Hughes 269C, 1990

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 BFO91LA014](https://openairdocs.org/ntsb/BFO91LA014.md): Hughes 269C · Louisville, KY · Accident · No injuries · Limited investigation · Final report · Nov 15, 1990 · N9280F · Substantial damage
  > Fatigue failure of the number 1 cylinder connecting rod.
- [NTSB BFO90FA079](https://openairdocs.org/ntsb/BFO90FA079.md): Hughes 269C · Jefferson, MD · Accident · 1 fatal · Field investigation · Final report · Sep 25, 1990 · N1094D · Destroyed
  > The failure of the tail rotor drive transmission system due to a worn tail rotor splined drive sleeve, and inadequate maintenance and/or inspection by the operator. Contributing to the loss of control was the student pilot's failure to maintain adequate rotor…
- [NTSB FTW90FA164](https://openairdocs.org/ntsb/FTW90FA164.md): Hughes 269C · Shreveport, LA · Accident · Serious injuries · Field investigation · Final report · Aug 24, 1990 · N223TV · Substantial damage
  > The pilot's failure to maintain clearance from the obstruction. Factors related to the accident were: the lack of visual ques due to the light conditions at dusk, the ground observer's lack of assistance and lack of experience in the type of operation, and…
- [NTSB LAX90LA234](https://openairdocs.org/ntsb/LAX90LA234.md): Hughes 269C · Carlsbad, CA · Accident · Minor injuries · Limited investigation · Final report · Jun 29, 1990 · N1102H · Substantial damage
  > Failure of the pilot to maintain directional control at a hover.
- [NTSB ATL90LA134](https://openairdocs.org/ntsb/ATL90LA134.md): Hughes 269C · Saluda, SC · Accident · No injuries · Limited investigation · Final report · Jun 22, 1990 · N7448F · Substantial damage
  > Pilot's failure to properly plan for high density altitude operations, which resulted in settling with power to the ground.
- [NTSB LAX90LA187](https://openairdocs.org/ntsb/LAX90LA187.md): Hughes 269C · Rialto, CA · Accident · No injuries · Limited investigation · Final report · May 23, 1990 · N7441F · Substantial damage
  > Improper maintenance procedure by maintenance personnel to troubleshoot a reported deficiency and the pilot's decision to demonstrate the vibration, exceeding the design limits of the helicopter and inducing ground resonance. Contributing to the accident was…
- [NTSB MIA90FA117](https://openairdocs.org/ntsb/MIA90FA117.md): Hughes 269C · Fort Pierce, FL · Accident · Minor injuries · Field investigation · Final report · May 9, 1990 · N58275 · Destroyed
  > Improper touchdown during the autorotation by the dual student (ATP), his failure to maintain runway alignment, inadequate supervision by the CFI, and inadequate crew coordination. A factor related to the accident was the obstruction (taxiway light).
- [NTSB MIA90LA076](https://openairdocs.org/ntsb/MIA90LA076.md): Hughes 300C · Vero Beach, FL · Accident · No injuries · Limited investigation · Final report · Mar 2, 1990 · N58275 · Substantial damage
  > The failure of the pilot in command/instructor pilot to maintain adequate rotor RPM after landing from a touchdown autorotation. A factor related to the accident was the gusty wind condition.
- [NTSB FTW90LA074](https://openairdocs.org/ntsb/FTW90LA074.md): Hughes 269C · Houma, LA · Accident · No injuries · Limited investigation · Final report · Feb 24, 1990 · N7504A · Substantial damage
  > Loss of engine power for an unknown reason.
- [NTSB FTW90LA065](https://openairdocs.org/ntsb/FTW90LA065.md): Hughes 269C · Encinal, TX · Accident · No injuries · Limited investigation · Final report · Feb 10, 1990 · N58204 · Substantial damage
  > The loss of directional control due to the failure of the tail rotor cable.
- [NTSB LAX90LA065](https://openairdocs.org/ntsb/LAX90LA065.md): Hughes 269C · Rialto, CA · Accident · No injuries · Limited investigation · Final report · Jan 6, 1990 · N7456F · Destroyed
  > The lack of adequate supervision by the instructor pilot during a critical phase of flight when he allowed a student to perform in an unsafe manner without taking immediate corrective action.

## 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") = 1990
  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&year=1990

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