# NTSB investigations: Lycoming VO-435 series, 1989

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 LAX90LA042](https://openairdocs.org/ntsb/LAX90LA042.md): Bell 47G-II · Rialto, CA · Accident · Minor injuries · Limited investigation · Final report · Dec 2, 1989 · N2899B · Destroyed
  > The pilot's loss of directional control and subsequent overcontrol while hovering. Contributing to the accident were the gusty wind conditions and the pilot's inexperience.
- [NTSB LAX90DVM01](https://openairdocs.org/ntsb/LAX90DVM01.md): Bell 47G-5 · Guadalupe, CA · Accident · No injuries · Final report · Nov 1, 1989 · N4798R · Substantial damage
  > The pilot's failure to maintain sufficient clearance allowing the aircraft to collide with a wooden power pole. Contributing to the accident was the sunglare which inhibited the pilot's vision.
- [NTSB ATL90DKJ02](https://openairdocs.org/ntsb/ATL90DKJ02.md): Bell 47G2 · Wettumpka, AL · Accident · No injuries · Final report · Oct 27, 1989 · N9025 · Destroyed
  > The pilot's failure to avoid obstacles during aerial application maneuvering.
- [NTSB MIA89LA240](https://openairdocs.org/ntsb/MIA89LA240.md): Bell 47G-2 · Cayey, PR · Accident · No injuries · Limited investigation · Final report · Sep 3, 1989 · N37870 · Substantial damage
  > Loss of engine power for an unknown reason. A factor related to the accident was: the presence of trees in the emergency landing area.
- [NTSB MIA89LA221](https://openairdocs.org/ntsb/MIA89LA221.md): Continental Copters Tomcat MK6C · Quitman, MS · Accident · Serious injuries · Limited investigation · Final report · Aug 14, 1989 · N9085T · Destroyed
  > Failure of the tail boom attachment.
- [NTSB MIA89LA213](https://openairdocs.org/ntsb/MIA89LA213.md): Bell 47G-2 · Sarasota, FL · Accident · No injuries · Limited investigation · Final report · Aug 5, 1989 · N3550 · Substantial damage
  > The student pilot's inadequate preflight planning/preparation, which resulted in fuel exhaustion due to an inadequate supply of fuel. Factors related to the accident were: the student pilot's lack of total experience & tree(s) in the emergency landing area.
- [NTSB ATL89FA193](https://openairdocs.org/ntsb/ATL89FA193.md): Texas Helicopter OH-13/M74 · Norman Park, GA · Accident · 1 fatal · Field investigation · Final report · Aug 2, 1989 · N51850 · Destroyed
  > Improper planning/decision by the pilot, which resulted in his physical impairment from exposure to lannate, and his failure to maintain altitude/clearance above the ground. A factor related to the accident was: failure of the pilot to use a respirator while…
- [NTSB LAX89DVA07](https://openairdocs.org/ntsb/LAX89DVA07.md): Texas Helicopter OH-13E/M74 · Hilmar, CA · Accident · No injuries · Final report · Jul 16, 1989 · N38117 · Destroyed
  > The pilot's loss of directional control during an attempted takeoff from a loading platform.
- [NTSB CHI89DEX05](https://openairdocs.org/ntsb/CHI89DEX05.md): Texas Helicopter OH-13H/M74A · New Richmond, IN · Accident · No injuries · Final report · Jul 13, 1989 · N10002 · Substantial damage
  > The pilot's misjudgement of the fuel supply which resulted in fuel exhaustion.
- [NTSB BFO89LA049](https://openairdocs.org/ntsb/BFO89LA049.md): Bell 47J · Fruitland, MD · Accident · No injuries · Limited investigation · Final report · Jul 2, 1989 · N6760D · Substantial damage
  > Poor judgement of the pilot by flying, while physically impaired by alcohol, and his misjudgement of clearance between the helicopter and the structure. The dark night and object (structure) were considered to be contributing factors.
- [NTSB SEA89LA098](https://openairdocs.org/ntsb/SEA89LA098.md): Bell 47G-2 · Buena, WA · Accident · Serious injuries · Limited investigation · Final report · Jun 2, 1989 · N41721 · Destroyed
  > The pilot's failure to maintain an adequate visual lookout and clearance to avoid the power lines.

## 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") = 1989
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41525'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41525&year=1989

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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.