# NTSB investigations, 1997: Propeller failure/malfunction

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 LAX98LA033](https://openairdocs.org/ntsb/LAX98LA033.md): Waco YMF-5 · Sedona, AZ · Accident · Serious injuries · Limited investigation · Final report · Nov 8, 1997 · N369DP · Destroyed
  > The failure and separation of the propeller for undetermined reasons.
- [NTSB LAX97FA291](https://openairdocs.org/ntsb/LAX97FA291.md): Hefner Pitts S1S · Van Nuys, CA · Accident · 1 fatal · Field investigation · Final report · Aug 17, 1997 · N10HJ · Destroyed
  > the operation of the propeller beyond the design rpm limitations and the resultant gyroscopic loads from aerobatics. Contributing to the accident was the lack of a required instrument panel rpm restriction for the propeller mandated by an airworthiness…
- [NTSB LAX97LA245](https://openairdocs.org/ntsb/LAX97LA245.md): Classic Waco YMF-5 · Pahoa, HI · Accident · Minor injuries · Limited investigation · Final report · Jul 16, 1997 · N553T · Substantial damage
  > Loss of the propeller retaining nut and associated hardware for undetermined reasons. A factor in the accident was the lack of suitable terrain for a forced landing.
- [NTSB FTW97LA225](https://openairdocs.org/ntsb/FTW97LA225.md): Air Tractor AT-502A · Chesterville, TX · Accident · No injuries · Limited investigation · Final report · Jun 13, 1997 · N248LF · Substantial damage
  > an undetermined malfunction/failure of the propeller reversing system.
- [NTSB ANC97LA046](https://openairdocs.org/ntsb/ANC97LA046.md): Beech G18S · Nome, AK · Accident · No injuries · Limited investigation · Final report · Mar 21, 1997 · N555CG · Substantial damage
  > fracture of a propeller blade tip.
- [NTSB ANC97FA024](https://openairdocs.org/ntsb/ANC97FA024.md): de Havilland DHC-4A · Sparrevohn, AK · Accident · 1 fatal · Field investigation · Final report · Jan 30, 1997 · N702SC · Destroyed
  > loss of the right engine propeller control oil, which led to an overspeed of the right engine and propeller, and necessitated a shut-down of the right engine; and failure of the pilot to maintain adequate altitude/distance from terrain during visual approach…
- [NTSB LAX97LA084](https://openairdocs.org/ntsb/LAX97LA084.md): Beech N35 · Holbrook, AZ · Accident · No injuries · Limited investigation · Final report · Jan 9, 1997 · N7HB · Substantial damage
  > fatigue failure of the propeller hub, which resulted in separation of the propeller assembly and reduction of aircraft control. Also causal was: the resultant lack of compliance with Airworthiness Directive (AD) 89-26-08, due to ambiguous and unclear wording…

## 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 o.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o."occurrenceNumber" = 1 AND o."occurrenceCode" = 131)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?occurrence=131&year=1997

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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.