# NTSB investigations: Allison 250-C20 series, 1994

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 ANC95LA014](https://openairdocs.org/ntsb/ANC95LA014.md): Bell 206B · Kenai, AK · Accident · No injuries · Limited investigation · Final report · Dec 4, 1994 · N3179X · Substantial damage
  > The pilot's failure to follow the information in the flight manual concerning the use of the particle separator kit and deflector kit when operating in falling snow. Factors were the rough terrain in the forced landing area and no installation of the…
- [NTSB SEA95LA013](https://openairdocs.org/ntsb/SEA95LA013.md): Hiller UH-12E4 · Morton, WA · Accident · No injuries · Limited investigation · Final report · Oct 28, 1994 · N80NW · Substantial damage
  > A leak in the fuel filler cap and water in the fuel system. A factor to the accident was: inadequate preflight.
- [NTSB NYC95LA009](https://openairdocs.org/ntsb/NYC95LA009.md): Aerospatiale AS-355 · Jonesville, VA · Accident · 1 fatal · Limited investigation · Final report · Oct 15, 1994 · N5787A · Destroyed
  > The pilot's failure to maintain clearance from the power lines.
- [NTSB LAX94LA352](https://openairdocs.org/ntsb/LAX94LA352.md): Hughes 369E · Volcano, HI · Accident · Minor injuries · Limited investigation · Final report · Sep 4, 1994 · N279F · Substantial damage
  > the pilot's failure to maintain adequate main rotor rpm and the resultant inadvertent skid contact with the ground.
- [NTSB FTW94T#A01](https://openairdocs.org/ntsb/FTW94T%23A01.md): Bell 206A · Estes Park, CO · Accident · No injuries · Class 3 · Final report · Jun 26, 1994 · N7881S · Substantial damage
- [NTSB LAX94LA241](https://openairdocs.org/ntsb/LAX94LA241.md): Hughes 369D · Kaneohe, HI · Accident · No injuries · Limited investigation · Final report · Jun 7, 1994 · N4943T · Substantial damage
  > the operator's and pilot's failure to ensure that the cargo net containing empty paper bags was sufficiently ballasted to prevent it from flying up into the tail rotor.
- [NTSB MIA94LA144](https://openairdocs.org/ntsb/MIA94LA144.md): Bell 206B · St. Petersburg, FL · Accident · Minor injuries · Limited investigation · Final report · May 19, 1994 · N72Z · Substantial damage
  > The failure of the number five bearing, shaft, or thomas coupling for undetermined reasons. Contributing to the accident was the pilot-in-command's delayed response in conducting the emergency procedure by not reducing the throttle to idle position, and…
- [NTSB SEA94LA109](https://openairdocs.org/ntsb/SEA94LA109.md): Bell 206B · Summerville, OR · Accident · Minor injuries · Limited investigation · Final report · Apr 25, 1994 · N35BL · Destroyed
  > The pilot did not maintain clearance from the wires. The overcast sky condiiton was a factor.
- [NTSB MIA94LA116](https://openairdocs.org/ntsb/MIA94LA116.md): Bell 206B · Mayaguez, PR · Accident · Serious injuries · Limited investigation · Final report · Apr 10, 1994 · N39125 · Substantial damage
  > Loss of engine power for undetermined reasons which resulted in a descent and ditching.
- [NTSB SEA94LA094](https://openairdocs.org/ntsb/SEA94LA094.md): Hughes 369D · Rimrock, WA · Accident · Minor injuries · Limited investigation · Final report · Apr 1, 1994 · N5211R · Substantial damage
  > Fuel exhaustion, the pilot in command's failure to refuel the aircraft, and the inability to successfully execute an auto- rotation landing because of the low altitude.
- [NTSB FTW94LA110](https://openairdocs.org/ntsb/FTW94LA110.md): Bell 206B · Belen, NM · Accident · No injuries · Limited investigation · Final report · Mar 27, 1994 · N2779B · Substantial damage
  > The hard landing due to a delayed flare and improper touchdown. A factor was the loss of engine power.
- [NTSB MIA94WA094](https://openairdocs.org/ntsb/MIA94WA094.md): Bell 206BIII · Corozal, Honduras · Accident · Serious injuries · Foreign investigation · Mar 10, 1994 · N5239Y · Substantial damage
- [NTSB FTW94LA061](https://openairdocs.org/ntsb/FTW94LA061.md): Hughes 369HS · Mason, TX · Accident · Serious injuries · Limited investigation · Final report · Jan 1, 1994 · N7092Q · Destroyed
  > Loss of aircraft control for an undetermined reason.

## 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") = 1994
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('03020'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=03020&year=1994

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