# NTSB investigations: Lycoming TVO-435-GIA, 1987

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 DEN87LA235](https://openairdocs.org/ntsb/DEN87LA235.md): Bell 47-G3B2 · Oakley, UT · Accident · No injuries · Limited investigation · Final report · Sep 10, 1987 · N1038X · Substantial damage
  > The plt had just taken off from a confined area surrounded on two sides with electrical power lines. As he attempted to climb, he said his RPM began to bleed off. He stated that he made a right pedal turn to avoid the wires but was unable to prevent a hard…
- [NTSB SEA87LA118](https://openairdocs.org/ntsb/SEA87LA118.md): Bell 47G-3B-2 · Milton-Freewatr, OR · Accident · Minor injuries · Limited investigation · Final report · Jun 12, 1987 · N2219W · Destroyed
  > The pilot was hovering up rising terrain at a slow airspeed, at 15 feet above the ground while on an agricultural spraying flight and encountered settling with power. The aircraft entered an uncontrolled descent and impacted the ground.
- [NTSB DEN87LA120](https://openairdocs.org/ntsb/DEN87LA120.md): Bell 47G3B2A · Brigham City, UT · Accident · No injuries · Limited investigation · Final report · May 8, 1987 · N58131 · Substantial damage
  > An ag plt was ferrying a helicopter to another job in his local area. The plt, an ATP, had estimated that the helicopter had enough fuel for the flt. The helicopter's engine quit and an autorotation was performed, resulting in a hard landing. Less than one…
- [NTSB FTW87GA083](https://openairdocs.org/ntsb/FTW87GA083.md): Bell 47G-3B-1 · Odessa, TX · Accident · No injuries · Final report · Mar 21, 1987 · N62462 · Substantial damage
  > Investigation reveals the helicopter touched down on the heel of its skids, left skid first, and at a slightly low rotor RPM. The tail boom then moved upward while the main rotor blades flexed downward. The main rotor blades contacted and severed the tail…

## 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") = 1987
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41526'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41526&year=1987

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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.