# NTSB investigations: Lycoming IO-720 series, 1997

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 FTW98LA027](https://openairdocs.org/ntsb/FTW98LA027.md): Helio H-800 · Ogden, UT · Accident · No injuries · Limited investigation · Final report · Oct 20, 1997 · N40013 · Substantial damage
  > failure of the tail wheel assembly, which rendered the aircraft uncontrollable during landing roll.
- [NTSB CHI97LA105](https://openairdocs.org/ntsb/CHI97LA105.md): Piper PA-24 · Elk Falls, KS · Accident · No injuries · Limited investigation · Final report · Apr 12, 1997 · N8739P · Substantial damage
  > fracture of the fuel selector assembly which resulted in fuel starvation.
- [NTSB FTW97LA105](https://openairdocs.org/ntsb/FTW97LA105.md): Piper PA-36-375 · Danevang, TX · Accident · No injuries · Limited investigation · Final report · Feb 18, 1997 · N7167E · Substantial damage
  > The utility's company failure to notify affected parties of the downed line, and the pilot's failure to maintain clearance with the downed wire. A factor was the downed wire.

## 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") = 1997
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41546'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41546&year=1997

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