# NTSB investigations: Continental I0-470 series, 1991

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 FTW92LA032](https://openairdocs.org/ntsb/FTW92LA032.md): Cessna 310D · Hamilton, TX · Accident · Serious injuries · Limited investigation · Final report · Dec 2, 1991 · N6890T · Substantial damage
  > The inadvertend encounter with icing conditions. Factors were the unavailability of an airport weather observation facility and the deteriorated aircraft performance.
- [NTSB LAX92LA009](https://openairdocs.org/ntsb/LAX92LA009.md): Cessna 210 · Riverside, CA · Accident · No injuries · Limited investigation · Final report · Oct 6, 1991 · N9517T · Substantial damage
  > The failure of a hydraulic gear return line, which caused the aircraft's main landing gear to collapse during landing touchdown.
- [NTSB FTW92LA004](https://openairdocs.org/ntsb/FTW92LA004.md): Cessna 210C · Leander, TX · Accident · No injuries · Limited investigation · Final report · Oct 5, 1991 · N3655Y · Substantial damage
  > The pilot's disregard for the hazardous weather advisories received. A factor was the weather.
- [NTSB SEA91LA245](https://openairdocs.org/ntsb/SEA91LA245.md): Cessna 210 · Arlington, WA · Accident · No injuries · Limited investigation · Final report · Sep 7, 1991 · N9551T · Substantial damage
  > The pilot's failure to extend the landing gear. A factor contributing to the accident was the pilot's failure to utilize the landing checklist.
- [NTSB ATL91LA170](https://openairdocs.org/ntsb/ATL91LA170.md): Beech B-33 · Asheville, NC · Accident · No injuries · Limited investigation · Final report · Sep 3, 1991 · N1782G · Substantial damage
  > The pilot's selection of unsuitable terrain for takeoff. Factors were tall wet grass, and the failure of airport personnel to maintain the runway surface.
- [NTSB LAX91LA358](https://openairdocs.org/ntsb/LAX91LA358.md): Beech J35 · San Jose, CA · Accident · No injuries · Limited investigation · Final report · Aug 14, 1991 · N3028C · Substantial damage
  > The failure of the crankshaft counterweight retaining clip due to improper maintenance installation of the part.
- [NTSB FTW91FA147](https://openairdocs.org/ntsb/FTW91FA147.md): Beech 35-C33 · Dalhart, TX · Accident · 3 fatal · Field investigation · Final report · Aug 13, 1991 · N887R · Destroyed
  > The pilot's flight into known adverse weather. Factors were the pilot's lack of instrument experience and existing weather conditions.
- [NTSB FTW91LA140](https://openairdocs.org/ntsb/FTW91LA140.md): Beech K35 · Laredo, TX · Accident · Minor injuries · Limited investigation · Final report · Aug 3, 1991 · N8111R · Substantial damage
  > The improper installation of the oil filter adaptor 'o' ring (seal) by other maintenance personnel who distorted it. A factor was the rough, uneven terrain.
- [NTSB DEN91LA107](https://openairdocs.org/ntsb/DEN91LA107.md): Beech J35 · Tulsa, OK · Accident · Minor injuries · Limited investigation · Final report · Aug 3, 1991 · N643T · Destroyed
  > The engine ailure for undetermined reasons. Factors were the light condition and the lack of suitable terrain.
- [NTSB ANC91LA098](https://openairdocs.org/ntsb/ANC91LA098.md): Cessna 185A · Wood River, AK · Accident · No injuries · Limited investigation · Final report · Jul 13, 1991 · N1689Z · Substantial damage
  > The pilot's improper in-flight planning/decision, which resulted in fuel exhaustion due to an inadequate supply of fuel. Soft sand in the emergency landing area was a related factor.
- [NTSB MIA91LA179](https://openairdocs.org/ntsb/MIA91LA179.md): Cessna 182C · Keystone Hghts, FL · Accident · No injuries · Limited investigation · Final report · Jul 5, 1991 · N8875T · Substantial damage
  > Total loss of engine power due to fuel exhaustion due to fuel siphoning overboard, and failure of the pilot to perform an adequate preflight inspection to insure the fuel caps were secured. Contributing to the accident was incorrect fuel tank quantity gauges…
- [NTSB ATL91FA116](https://openairdocs.org/ntsb/ATL91FA116.md): Beech 95-B55 · Irmo, SC · Accident · 1 fatal · Field investigation · Final report · Jun 21, 1991 · N36743 · Destroyed
  > The loss of control of the aircraft for undetermined reason(s).
- [NTSB CHI91LA182](https://openairdocs.org/ntsb/CHI91LA182.md): Cessna 310L · Fort Wayne, IN · Accident · No injuries · Limited investigation · Final report · Jun 6, 1991 · N3337X · Substantial damage
  > The improper installation of a bearing by maintenance personnel.
- [NTSB LAX91LA235](https://openairdocs.org/ntsb/LAX91LA235.md): Beech B95-B55 · Glendale, AZ · Accident · No injuries · Limited investigation · Final report · Jun 1, 1991 · N14SC · Substantial damage
  > The pilot's failure to secure the fuel cap during his preflight inspection. As a result, fuel leaked out of the wing tank onto the wing and ignited during the engine start procedures.
- [NTSB CHI91DEE04](https://openairdocs.org/ntsb/CHI91DEE04.md): Beech 35-A33 · Vernon Hills, IL · Accident · No injuries · Final report · Apr 18, 1991 · N123JB · Substantial damage
  > Water contamination of the fuel, and the pilot's inadequate preflight inspection.
- [NTSB CHI91LA107](https://openairdocs.org/ntsb/CHI91LA107.md): Beech 55 · Forest Lake, MN · Accident · No injuries · Limited investigation · Final report · Mar 5, 1991 · N29SF · Substantial damage
  > An aborted landing not performed by the pilot. Factors related to the accident were a runway that was wet and ice covered.
- [NTSB DEN91LA041](https://openairdocs.org/ntsb/DEN91LA041.md): Beech P-35 · Durango, CO · Accident · Minor injuries · Limited investigation · Final report · Feb 10, 1991 · N9653Y · Substantial damage
  > Engine failure due to oil starvation caused by turbocharger oil feed line failure and subsequent loss of lubricating oil to the engine.

## 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") = 1991
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('17027'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=17027&year=1991

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OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.