# NTSB investigations, 2001, 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 FTW02LA052](https://openairdocs.org/ntsb/FTW02LA052.md): Piper PA-23-250 · Duncan, OK · Accident · Serious injuries · Limited investigation · Final report · Dec 13, 2001 · N127CA · Substantial damage
  > The pilot's descent below the minimum descent altitude, and his failure to maintain obstacle clearance. Contributing factors were the below approach/landing minimum weather, the dark night conditions, and the inoperative REIL's.
- [NTSB FTW02LA044](https://openairdocs.org/ntsb/FTW02LA044.md): Bell 47G · Ardmore, OK · Accident · No injuries · Limited investigation · Final report · Dec 1, 2001 · N5226 · Substantial damage
  > the flight instructor's selection of an unsuitable area for practicing a full touchdown autorotation, which resulted in a nose over. A contributing factor was the soft ground.
- [NTSB FTW02LA049](https://openairdocs.org/ntsb/FTW02LA049.md): Beech BE-50 · Altus, OK · Accident · No injuries · Limited investigation · Final report · Nov 16, 2001 · N432L · Substantial damage
  > The pilot's improper flare and his failure to maintain directional control. A contributing factor was the ditch.
- [NTSB FTW02LA021](https://openairdocs.org/ntsb/FTW02LA021.md): Cessna 152 · Bethany, OK · Accident · No injuries · Limited investigation · Final report · Oct 26, 2001 · N67797 · Substantial damage
  > the mechanic's failure to properly lock the exhaust valve's clearance adjusting screw locknut, which resulted in a loose nut, disabling of the exhaust valve pushrod, and a partial loss of engine power while in cruise flight. A contributing factor was the…
- [NTSB FTW02LA009](https://openairdocs.org/ntsb/FTW02LA009.md): Cessna 182A · Chickasha, OK · Accident · Minor injuries · Limited investigation · Final report · Oct 6, 2001 · N3862D · Substantial damage
  > The loss of engine power for undetermined reasons. A factor was the lack of suitable terrain for a forced landing.
- [NTSB FTW01LA198](https://openairdocs.org/ntsb/FTW01LA198.md): Cessna 150 · Miami, OK · Accident · Minor injuries · Limited investigation · Final report · Aug 26, 2001 · N10088 · Substantial damage
  > The pilot's failure to maintain adequate airspeed which resulted in a stall.
- [NTSB FTW01LA199](https://openairdocs.org/ntsb/FTW01LA199.md): John Greenlee X-Aircamper · Healdton, OK · Accident · No injuries · Limited investigation · Final report · Aug 25, 2001 · N899JG · Substantial damage
  > The loss of engine power due to carburetor ice as a result of the pilot's failure to apply carburetor heat during the approach to land. Contributing factors were weather conditions conducive to carburetor icing conditions and the lack of suitable terrain for…
- [NTSB FTW01LA197](https://openairdocs.org/ntsb/FTW01LA197.md): Piper PA-28-161 · Ardmore, OK · Accident · No injuries · Limited investigation · Final report · Aug 24, 2001 · N81833 · Substantial damage
  > the student pilot's failure to maintain directional control during takeoff roll.
- [NTSB FTW01LA175](https://openairdocs.org/ntsb/FTW01LA175.md): Piper PA-28 · Tulsa, OK · Accident · No injuries · Limited investigation · Final report · Jul 31, 2001 · N525Z · Substantial damage
  > the partial loss of engine power for an undetermined reason. A factor was the lack of suitable terrain for the forced landing.
- [NTSB FTW01LA161](https://openairdocs.org/ntsb/FTW01LA161.md): Cessna 172 · Kingston, OK · Accident · No injuries · Limited investigation · Final report · Jul 10, 2001 · N1581V · Substantial damage
  > the pilot's failure to maintain directional control during the takeoff roll, which required his evasive maneuver and resulted in a stall.
- [NTSB FTW01FA151](https://openairdocs.org/ntsb/FTW01FA151.md): Ercoupe 415-CD · McAlester, OK · Accident · 1 fatal · Field investigation · Final report · Jun 24, 2001 · N3962H · Destroyed
  > the inadvertent stall by the pilot-in-command.
- [NTSB FTW01LA143](https://openairdocs.org/ntsb/FTW01LA143.md): Commander 114-B · Okmulgee, OK · Accident · Minor injuries · Limited investigation · Final report · Jun 14, 2001 · N114BW · Substantial damage
  > the failure of the #6 cylinder's connecting rod, which resulted in a complete loss of engine power. A contributing factor to the accident was the lack of suitable terrain for the forced landing.
- [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 FTW01LA126](https://openairdocs.org/ntsb/FTW01LA126.md): Beech BE-76 · Tulsa, OK · Accident · No injuries · Limited investigation · Final report · May 21, 2001 · N6003Y · Substantial damage
  > the dual student pilot's failure to maintain clearance from the hangar while taxing.
- [NTSB FTW01LA120](https://openairdocs.org/ntsb/FTW01LA120.md): Kirchner Pietenpol Aircamper · Tulsa, OK · Accident · No injuries · Limited investigation · Final report · May 17, 2001 · N25157 · Substantial damage
  > the pilot's inadequate flare during the forced landing, which resulted in a hard landing. A contributing factor was the engine overheating due a stuck oil cooler thermostat valve, which resulted in a loss of power.
- [NTSB FTW01LA113](https://openairdocs.org/ntsb/FTW01LA113.md): Cessna 172RG · Washington, OK · Accident · Minor injuries · Limited investigation · Final report · May 3, 2001 · N9696B · Substantial damage
  > the in-flight fire for an undetermined reason, which resulted in a forced landing. A contributory factor was the lack of suitable terrain for the forced landing.
- [NTSB FTW01TA084](https://openairdocs.org/ntsb/FTW01TA084.md): Cessna 152 · Antlers, OK · Accident · No injuries · Final report · Mar 23, 2001 · N5308M · Substantial damage
  > fuel exhaustion in cruise flight due to the pilot's delay in refueling. A contributing factor was the lack of suitable terrain for the forced landing.
- [NTSB FTW01LA087](https://openairdocs.org/ntsb/FTW01LA087.md): Bell 47G2 · Ardmore, OK · Accident · No injuries · Limited investigation · Final report · Mar 22, 2001 · N1575 · Substantial damage
  > the loss of tail rotor control during maneuvering resultant from the failure of the tail rotor drive shaft coupling due to a stripped thread which allowed the grease lubricating the shaft to leak out. A factor was the lack of suitable terrain for the forced…
- [NTSB FTW01LA080](https://openairdocs.org/ntsb/FTW01LA080.md): Cessna 210D · Lawton, OK · Accident · No injuries · Limited investigation · Final report · Mar 15, 2001 · N210HS · Substantial damage
  > the pilot's failure to maintain aircraft control during the landing flare/touchdown. A contributing factor was the crosswind.
- [NTSB FTW01LA078](https://openairdocs.org/ntsb/FTW01LA078.md): Cessna 152 · Oklahoma City, OK · Accident · Minor injuries · Limited investigation · Final report · Mar 14, 2001 · N757GP · Destroyed
  > the loss of engine power during the initial takeoff climb for an undetermined reason, which resulted in a forced landing. A contributory factor to the accident was the lack of suitable terrain for the forced landing.
- [NTSB FTW01LA074](https://openairdocs.org/ntsb/FTW01LA074.md): Cessna 182P · Tuttle, OK · Accident · No injuries · Limited investigation · Final report · Mar 2, 2001 · N4721K · Substantial damage
  > fuel exhaustion due to a loose fuel cap as a result of the pilot's inadequate preflight. A contributory factor was the lack of suitable terrain for the forced landing.
- [NTSB FTW01LA066](https://openairdocs.org/ntsb/FTW01LA066.md): Piper PA-28-140 · Owasso, OK · Accident · Minor injuries · Limited investigation · Final report · Feb 12, 2001 · N2457Q · Substantial damage
  > the pilot's delay in switching the fuel selector, which resulted in fuel starvation in cruise flight.
- [NTSB FTW01FA058](https://openairdocs.org/ntsb/FTW01FA058.md): Cessna 152 · Platter, OK · Accident · 2 fatal · Field investigation · Final report · Feb 6, 2001 · N114SS · 2 aircraft · Destroyed
  > the failure of both pilots to maintain a visual lookout, which resulted in a mid-air collision over a lake. A contributing factor to the accident was the sun glare from the setting sun.
- [NTSB FTW01LA045](https://openairdocs.org/ntsb/FTW01LA045.md): Cessna 152 · Bristow, OK · Accident · No injuries · Limited investigation · Final report · Jan 4, 2001 · N68472 · Substantial damage
  > The pilot's inadequate compensation for the crosswind conditions, which resulted in the airplane striking a snow bank during the landing flare/touchdown. A factor was the crosswind weather condition.

## 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") = 2001
  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=2001

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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.