# NTSB investigations: Lycoming VO-435 series, IL: Loss of engine power(total) - nonmechanical

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 CHI87DEV02](https://openairdocs.org/ntsb/CHI87DEV02.md): Bell 47G2 · Peoria Heights, IL · Accident · No injuries · Final report · Jun 22, 1987 · N15395 · Substantial damage
  > Returning from a powerline patrol flight, the engine surged twice and quit. The pilot executed an autorotation to the only available landing site, a high school football field. On touchdown the blades flexed and severed the tailboom. Investigation revealed…
- [NTSB CHI82DA171](https://openairdocs.org/ntsb/CHI82DA171.md): Bell 47G-5 · Sublette, IL · Accident · Minor injuries · Final report · May 17, 1982 · N7841S · Substantial damage
  > Prior to this flight, the helicopter had been flown about 1 hr from roselle to Sublette, IL, then it was flown another 1/2 hr to survey the area to be sprayed. About 10 minutes after departing to spray, the engine lost power. The pilot started an autorotative…

## 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 c."eventStateOrRegion" = 'IL' AND c."eventCountry" = 'USA'
  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')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 353))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41525&occurrence=353&state=IL

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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.