# NTSB investigations, 2015, OK

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 CEN16LA082](https://openairdocs.org/ntsb/CEN16LA082.md): Beech V35B · Tahlequah, OK · Accident · No injuries · Limited investigation · Final report · Dec 23, 2015 · N4523A · Substantial damage
  > A partial loss of engine power shortly after takeoff due to an inadequately tightened fuel line. Also causal was the pilot's failure to extend the landing gear once the airplane was in a position to safely land on the runway.
- [NTSB CEN15LA437](https://openairdocs.org/ntsb/CEN15LA437.md): Capella Aircraft Corporation ( FW2TDXLS · Bartlesville, OK · Accident · Minor injuries · Limited investigation · Final report · Sep 30, 2015 · N903AB · Substantial damage
  > The pilot’s failure to maintain airplane control after takeoff.
- [NTSB CEN15LA432](https://openairdocs.org/ntsb/CEN15LA432.md): Rans S18 · Shattuck, OK · Accident · 1 fatal · Limited investigation · Final report · Sep 29, 2015 · UNREG · Substantial damage
  > The noncertificated pilot’s failure to maintain control of the unregistered airplane during initial climb and his subsequent exceedance of the airplane’s critical angle-of-attack, which resulted in a stall/spin.
- [NTSB CEN15LA379](https://openairdocs.org/ntsb/CEN15LA379.md): Robinson Helicopter R44 II · Ketchum, OK · Accident · Minor injuries · Limited investigation · Final report · Aug 25, 2015 · N444KD · Substantial damage
  > The separation of the tail rotor gearbox from the tailboom aft bulkhead due to overstress loads imposed by a blade imbalance from an in-flight impact with an undetermined object.
- [NTSB CEN15FA316](https://openairdocs.org/ntsb/CEN15FA316.md): Beech V35B · Colbert, OK · Accident · 2 fatal · Field investigation · Final report · Jul 26, 2015 · N252G · Substantial damage
  > The pilot's failure to properly position the fuel selector, which resulted in a total loss of engine power due to fuel starvation. Contributing to the severity of the accident was the pilot's failure to select an appropriate location for a forced landing,…
- [NTSB CEN15LA313](https://openairdocs.org/ntsb/CEN15LA313.md): Luscombe 8E · Perry, OK · Accident · Serious injuries · Limited investigation · Final report · Jul 22, 2015 · N2789K · Substantial damage
  > The pilot's incapacitation and subsequent loss of airplane control due to heat exhaustion.
- [NTSB GAA15CA165](https://openairdocs.org/ntsb/GAA15CA165.md): Aviat A-1C-180 · Comanche, OK · Accident · No injuries · Data collection · Final report · Jul 4, 2015 · N317MA · Substantial damage
  > The pilot's failure to maintain proper pitch control during touchdown, which resulted in a nose over and impact with terrain.
- [NTSB CEN15LA258](https://openairdocs.org/ntsb/CEN15LA258.md): Flight Design Ctsw · Haskell, OK · Accident · Minor injuries · Limited investigation · Final report · Jun 6, 2015 · N535CT · Substantial damage
  > The loss of engine power for reasons that could not be determined because a postaccident engine examination and test run did not reveal any evidence of preimpact malfunctions or failures that would have precluded normal operation.
- [NTSB CEN15LA238](https://openairdocs.org/ntsb/CEN15LA238.md): Piper PA-25-235 · Omega, OK · Accident · No injuries · Limited investigation · Final report · May 11, 2015 · N7279Z · Substantial damage
  > Improper base metal preparation or contamination of the No. 5 cylinder wall before it was coated, which resulted in the coating peeling off of the cylinder wall and contaminating the engine oil and the subsequent partial loss of engine power.
- [NTSB CEN15LA205](https://openairdocs.org/ntsb/CEN15LA205.md): Pitts Model 12 · Burneyville, OK · Accident · Minor injuries · Limited investigation · Final report · Apr 18, 2015 · N12DR · Substantial damage
  > The partial loss of engine power due to contamination of the fuel system.
- [NTSB CEN15LA204](https://openairdocs.org/ntsb/CEN15LA204.md): Grumman G 164A · Maysville, OK · Accident · Minor injuries · Limited investigation · Final report · Apr 15, 2015 · N7951 · Substantial damage
  > The loss of engine power for reasons that could not be determined because a postaccident examination of the airframe and engine did not reveal any anomalies that would have precluded normal operation.
- [NTSB CEN15LA180](https://openairdocs.org/ntsb/CEN15LA180.md): Cessna 208B · Verdigris, OK · Accident · Minor injuries · Limited investigation · Final report · Mar 24, 2015 · N106BZ · Substantial damage
  > The fuel pump gear manufacturer’s allowance of set-up gears made from a nonconforming material to be put in the production inventory system, the installation of a nonconforming gear in the accident airplane’s production fuel pump, and the gear’s failure,…
- [NTSB CEN15FA171](https://openairdocs.org/ntsb/CEN15FA171.md): Eurocopter AS 350 B2 · Eufaula, OK · Accident · 1 fatal · Field investigation · Final report · Mar 13, 2015 · N919EM · Destroyed
  > The flight's inadvertent encounter with night instrument meteorological conditions, which resulted in the pilot turning the helicopter and subsequently descending into trees and terrain due to spatial disorientation.
- [NTSB CEN15CA168](https://openairdocs.org/ntsb/CEN15CA168.md): Jones Ronald C Bearhawk · Walters, OK · Accident · No injuries · Data collection · Final report · Mar 8, 2015 · N299BH · Substantial damage
  > The pilot did not maintain control of the airplane during the landing roll at night on an unlit grass strip.
- [NTSB CEN15CA166](https://openairdocs.org/ntsb/CEN15CA166.md): Funk B85C · Leonard, OK · Accident · No injuries · Data collection · Final report · Mar 6, 2015 · N81194 · Substantial damage
  > The improper installation of the UP elevator cable turnbuckle which became disconnected during the flight.
- [NTSB CEN15FA127](https://openairdocs.org/ntsb/CEN15FA127.md): Eagleston John H Vans RV9A · Kingston, OK · Accident · 1 fatal · Field investigation · Final report · Jan 28, 2015 · N708JE · Substantial damage
  > The pilot’s continuation of a banked turn following the loss of engine power, which resulted in his failure to maintain adequate airspeed and the airplane exceeding its critical angle of attack and entering an accelerated stall at low altitude. Contributing…
- [NTSB CEN15CA121](https://openairdocs.org/ntsb/CEN15CA121.md): Cessna 152 · Tulsa, OK · Accident · No injuries · Data collection · Final report · Jan 22, 2015 · N6300Q · Substantial damage
  > The pilot's improper landing technique which resulted in a hard landing and subsequent nose landing gear collapse.

## 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") = 2015
  AND c."eventStateOrRegion" = 'OK' AND c."eventCountry" = 'USA'
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?state=OK&year=2015

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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.