# NTSB investigations, OK: Abrupt maneuver

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 FTW01FA129](https://openairdocs.org/ntsb/FTW01FA129.md): Cessna 150 · Pryor, OK · Accident · 1 fatal · Field investigation · Final report · May 26, 2001 · N5617E · 2 aircraft · Destroyed
  > the failure of the glider pilot to maintain aircraft control and his delay in releasing the towrope. A contributing factor was the glider's worn elevator trim friction, which resulted in its disengagement.
- [NTSB FTW99FA211](https://openairdocs.org/ntsb/FTW99FA211.md): Cessna 177 · Wagoner, OK · Accident · 2 fatal · Field investigation · Final report · Aug 7, 1999 · N29571 · Destroyed
  > The pilot's inadvertent stall while performing an abrupt maneuver at low altitude.
- [NTSB FTW95LA244](https://openairdocs.org/ntsb/FTW95LA244.md): Walter W. Bell Lazer Edge · El Reno, OK · Accident · 1 fatal · Limited investigation · Final report · Jun 14, 1995 · N33PE · Destroyed
  > The pilot's failure to maintain control resulting in an inadvertent stall/spin. Factors were the pilot's performance of aerobatic maneuvers at the low altitude.
- [NTSB FTW94LA283](https://openairdocs.org/ntsb/FTW94LA283.md): Walton Skybolt · Collinsville, OK · Accident · 2 fatal · Limited investigation · Final report · Aug 27, 1994 · N113BW · Destroyed
  > The pilot's failure to maintain airspeed resulting in an inadvertent stall.
- [NTSB FTW94FA158](https://openairdocs.org/ntsb/FTW94FA158.md): Bell 47G-2 · Tulsa, OK · Accident · 1 fatal · Field investigation · Final report · May 16, 1994 · N47GY · Destroyed
  > In flight loss of control due to the pilot's improper use of the cyclic and collective controls when he maneuvered abruptly to avoid colliding with a flock of birds. Factors were the birds and the inflight separation of the left synchronized elevator.
- [NTSB FTW92DPJ01](https://openairdocs.org/ntsb/FTW92DPJ01.md): Ayres S2R-T15 · Cordell, OK · Accident · 1 fatal · Final report · Oct 5, 1991 · N4008S · Destroyed
  > Inadvertent stall. A factor was that the aircraft weight and balance limitations were exceeded.
- [NTSB FTW89DPJ01](https://openairdocs.org/ntsb/FTW89DPJ01.md): Autra Scorpion/133 · Mcalester, OK · Accident · 1 fatal · Final report · Oct 10, 1988 · N137A · Destroyed
  > The homebuilt helicopter was departing on a local flight, when, on initial climbout, the low time, inexperienced student pilot made an abrupt maneuver which sent the helicopter into an uncontrolled descent. It impacted trees and a post crash fire occurred.
- [NTSB FTW86FA142](https://openairdocs.org/ntsb/FTW86FA142.md): Bell 206B · Watson, OK · Accident · Serious injuries · Field investigation · Final report · Aug 4, 1986 · N33W · Substantial damage
  > Pilot of Bell 206B conducting forestry operations experienced problem with fire dispensing apparatus being slung beneath aircraft while returning to helipad for fuel. Pilot landed, released external load, and got out of aircraft to release electrical…
- [NTSB FTW85FA335](https://openairdocs.org/ntsb/FTW85FA335.md): North American British Harvard Mkii · Ada, OK · Accident · 2 fatal · Field investigation · Final report · Aug 28, 1985 · N711XX · Destroyed
  > Two fully qualified single engine plts were in the acft at the time of the accidnet. The acft was observed making low passes near the airport after takeoff. One plt's mother lived near the accident site. The acft was in a steep banked right turn when the…

## 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" = 'OK' AND c."eventCountry" = 'USA'
  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" = 100)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?occurrence=100&state=OK

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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.