# NTSB investigations, 1998, 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 FTW99FA044](https://openairdocs.org/ntsb/FTW99FA044.md): Beech 58 · Newcastle, OK · Accident · 1 fatal · Field investigation · Final report · Dec 6, 1998 · N1826S · Destroyed
  > the pilot's loss of control due to his inadvertent encounter with severe turbulence and wind shear during an instrument approach. Factors contributing to the accident were the severe turbulence and the wind shear.
- [NTSB FTW99LA023](https://openairdocs.org/ntsb/FTW99LA023.md): Beech 35-C33 · Tulsa, OK · Accident · Serious injuries · Limited investigation · Final report · Nov 10, 1998 · N24TH · Substantial damage
  > The loss of engine power due to detonation for undetermined reasons. A factor was the lack of suitable terrain for the forced landing.
- [NTSB FTW99FA020](https://openairdocs.org/ntsb/FTW99FA020.md): Beech B19 · Hobart, OK · Accident · 2 fatal · Field investigation · Final report · Nov 8, 1998 · N9740L · Destroyed
  > The pilot's continued VFR flight into instrument meteorological conditions and his failure to maintain terrain clearance. Factors were the low ceiling, fog, dark night conditions, and the pilot's failure to obtain a weather briefing prior to the flight.
- [NTSB FTW99LA010](https://openairdocs.org/ntsb/FTW99LA010.md): Mooney M20A · Oklahoma City, OK · Accident · No injuries · Limited investigation · Final report · Oct 18, 1998 · N6534B · Substantial damage
  > The loss of engine power due to fuel starvation as result of the pilot's improper placement of the fuel tank selector switch. A factor was the lack of suitable terrain for the pilot to execute the forced landing.
- [NTSB FTW99FA006](https://openairdocs.org/ntsb/FTW99FA006.md): Cessna 172M · Oklahoma City, OK · Accident · 1 fatal · Field investigation · Final report · Oct 11, 1998 · N172JF · Destroyed
  > Suicide.
- [NTSB FTW99LA005](https://openairdocs.org/ntsb/FTW99LA005.md): Air Tractor AT-502B · Ringling, OK · Accident · No injuries · Limited investigation · Final report · Oct 8, 1998 · N502S · Substantial damage
  > The pilot's failure to maintain obstacle clearance. A factor was the sun glare which impaired the pilot's vision.
- [NTSB FTW99LA003](https://openairdocs.org/ntsb/FTW99LA003.md): Beech M35 · Carter, OK · Accident · No injuries · Limited investigation · Final report · Oct 2, 1998 · N9838R · Substantial damage
  > Fuel starvation. Factors were; the pilot's self induced pressure to fly the aircraft when maintenance had not been completed, poor judgement by the pilot to commence and continue flight with known deficiencies in the aircraft, and the lack of suitable terrain…
- [NTSB FTW98LA409](https://openairdocs.org/ntsb/FTW98LA409.md): Champion 7EC · Catoosa, OK · Accident · Serious injuries · Limited investigation · Final report · Sep 26, 1998 · N9098B · Substantial damage
  > The pilot's failure to maintain control of the airplane resulting in an inadvertent stall.
- [NTSB FTW98LA403](https://openairdocs.org/ntsb/FTW98LA403.md): Cessna 150M · Yukon, OK · Accident · No injuries · Limited investigation · Final report · Sep 20, 1998 · N6107K · Substantial damage
  > The pilot's improper landing flare which resulted in a hard landing and her improper recovery procedures for a bounced landing.
- [NTSB FTW98LA400](https://openairdocs.org/ntsb/FTW98LA400.md): Bell 47-G-2 · Ardmore, OK · Accident · No injuries · Limited investigation · Final report · Sep 17, 1998 · N1575 · Substantial damage
  > The pilots failure to maintain clearance with terrain and the ensuing loss of control.
- [NTSB FTW98LA397](https://openairdocs.org/ntsb/FTW98LA397.md): Stinson 108-1 · Tahlequah, OK · Accident · No injuries · Limited investigation · Final report · Sep 12, 1998 · N8548K · Substantial damage
  > The pilot's failure to maintain directional control of the aircraft during takeoff. A factor was the gusty wind conditions at the time of the accident.
- [NTSB FTW98LA345](https://openairdocs.org/ntsb/FTW98LA345.md): Fennell VP2 · Collinsville, OK · Accident · Minor injuries · Limited investigation · Final report · Aug 6, 1998 · N2099J · Destroyed
  > The loose throttle control cable resulting in the loss of engine power. A factor was the pilot's decision to intentionally stall the airplane close to the ground during the forced landing to an open field.
- [NTSB FTW98LA346](https://openairdocs.org/ntsb/FTW98LA346.md): Cessna 152 · Norman, OK · Accident · No injuries · Limited investigation · Final report · Aug 3, 1998 · N93116 · Substantial damage
  > The student pilot's delayed landing flare resulting in a hard landing and his improper recovery procedures for a bounced landing.
- [NTSB FTW98LA322](https://openairdocs.org/ntsb/FTW98LA322.md): Piper PA-28-181 · Fairview, OK · Accident · Minor injuries · Limited investigation · Final report · Jul 20, 1998 · N626BP · Substantial damage
  > Loss of engine power due to fuel exhaustion as a result of the pilot's failure to refuel. A factor was the lack of suitable terrain for the forced landing.
- [NTSB FTW98FA306](https://openairdocs.org/ntsb/FTW98FA306.md): Bell 47G · Jones, OK · Accident · 2 fatal · Field investigation · Final report · Jul 10, 1998 · N12085 · Destroyed
  > The pilot's failure to maintain adequate clearance from the trees during a low altitude flight/maneuver.
- [NTSB FTW98LA294](https://openairdocs.org/ntsb/FTW98LA294.md): Piper PA-28-140 · Tulsa, OK · Accident · Serious injuries · Limited investigation · Final report · Jul 3, 1998 · N1656J · Substantial damage
  > The airplane's impeded climb performance for undetermined reasons. A factor was the rising terrain.
- [NTSB FTW98LA271](https://openairdocs.org/ntsb/FTW98LA271.md): Cessna 150C · Collinsville, OK · Accident · No injuries · Limited investigation · Final report · Jun 16, 1998 · N7914Z · Substantial damage
  > The pilot's failure to maintain directional control during landing roll. A factor was the pilot's diverted attention.
- [NTSB FTW98LA263](https://openairdocs.org/ntsb/FTW98LA263.md): Moore B-8MJ · Pauls Valley, OK · Accident · 1 fatal · Limited investigation · Final report · Jun 15, 1998 · N4874X · Substantial damage
  > The non-certificated pilot's failure to maintain clearance from the hangar. A factor was the pilot's maneuvering at a low altitude.
- [NTSB FTW98LA250](https://openairdocs.org/ntsb/FTW98LA250.md): Piper PA-22 · Balko, OK · Accident · Minor injuries · Limited investigation · Final report · May 31, 1998 · N200HA · Substantial damage
  > The pilot's inadequate preflight planning which failed to assure adequate climb performance to clear an obstacle (fence) during takeoff climb.
- [NTSB FTW98LA247](https://openairdocs.org/ntsb/FTW98LA247.md): Cessna 150G · Claremore, OK · Accident · Minor injuries · Limited investigation · Final report · May 28, 1998 · N6256S · Substantial damage
  > The pilot's failure to maintain obstacle clearance.
- [NTSB FTW98FA238](https://openairdocs.org/ntsb/FTW98FA238.md): Bell 47G · Bixby, OK · Accident · 1 fatal · Field investigation · Final report · May 24, 1998 · N9954F · Substantial damage
  > The pilot's failure to maintain clearance from the power lines.
- [NTSB FTW98LA234](https://openairdocs.org/ntsb/FTW98LA234.md): Harding Revolution MINI-500B · Grove, OK · Accident · Minor injuries · Limited investigation · Final report · May 20, 1998 · N6144S · Destroyed
  > The improper alignment of the main drive belt by the owner/pilot/mechanic, which resulted in the failure of the main drive belt. A factor was the lack of suitable terrain for the forced landing.
- [NTSB FTW98FA229](https://openairdocs.org/ntsb/FTW98FA229.md): Piper PA-23-160 · Guthrie, OK · Accident · 2 fatal · Field investigation · Final report · May 18, 1998 · N4410P · Destroyed
  > The designated pilot examiner's decision to execute a single engine go-around which exceeded the airplane's engine out climb capability in the gear down configuration. Factors were the arcing of an electrical wire that grounded the engine starter and the high…
- [NTSB FTW98LA210](https://openairdocs.org/ntsb/FTW98LA210.md): Cessna 152 · Stillwater, OK · Accident · Minor injuries · Limited investigation · Final report · May 10, 1998 · N67326 · Substantial damage
  > The loss of engine power due to water contamination of the fuel. A factor was the lack of suitable terrain available for the forced landing.
- [NTSB FTW98FA203](https://openairdocs.org/ntsb/FTW98FA203.md): Ercoupe 415-C · Olustee, OK · Accident · 1 fatal · Field investigation · Final report · May 6, 1998 · N87125 · Substantial damage
  > The student pilot's improper decision to attempt an 180 degree turn to return to the takeoff runway.
- [NTSB FTW98FA189](https://openairdocs.org/ntsb/FTW98FA189.md): Cessna 150F · Muskogee, OK · Accident · 2 fatal · Field investigation · Final report · Apr 21, 1998 · N8720G · Destroyed
  > The inadvertent stall as result of the pilot's failure to retract the flaps from the fully extended position prior to takeoff. Factors were the gusting winds and the pilot's failure to follow the before takeoff checklist.
- [NTSB FTW98LA182](https://openairdocs.org/ntsb/FTW98LA182.md): Froberg Rotorway Executive · Sand Springs, OK · Accident · No injuries · Limited investigation · Final report · Apr 13, 1998 · N71RF · Destroyed
  > The failure of the owner/pilot to complete maintenance on the helicopter.
- [NTSB FTW98TA174](https://openairdocs.org/ntsb/FTW98TA174.md): Bellanca 7GCBC · Mcalester, OK · Accident · No injuries · Final report · Apr 5, 1998 · N53739 · Substantial damage
  > the pilot's inadequate compensation for the gusty crosswinds, during recovery from a bounced landing; and his failure to maintain directional control during a go-around. Related factors were: the wind conditions, and a subsequent encounter with of a fence and…
- [NTSB FTW98LA172](https://openairdocs.org/ntsb/FTW98LA172.md): Piper PA-28-161 · Marietta, OK · Accident · No injuries · Limited investigation · Final report · Apr 5, 1998 · N8124H · Substantial damage
  > The pilot's failure to maintain directional control during landing. A factor was the pilot's lack of total experience in the make and model of aircraft.
- [NTSB FTW98LA171](https://openairdocs.org/ntsb/FTW98LA171.md): Aero Commander S2R · Cushing, OK · Accident · No injuries · Limited investigation · Final report · Apr 4, 1998 · N8984Q · Substantial damage
  > The total loss of engine power resulting from a sheared accessory drive due to an undetermined reason. A factor was the lack of suitable terrain for the forced landing.
- [NTSB FTW98LA162](https://openairdocs.org/ntsb/FTW98LA162.md): Carter LONG-EZ · Lebanon, OK · Accident · Minor injuries · Limited investigation · Final report · Mar 28, 1998 · N83LE · Substantial damage
  > The pilot's inadequate compensation for the tailwind and his ensuing failure to attain the proper touchdown point. Factors were the tailwind and the pilot's failure to adequately preflight the airplane which resulted in a partial loss of engine power due to…
- [NTSB FTW98LA159](https://openairdocs.org/ntsb/FTW98LA159.md): Cessna 140 · Norman, OK · Accident · Minor injuries · Limited investigation · Final report · Mar 25, 1998 · N2044N · Substantial damage
  > The pilot's improper compensation for wind conditions, which resulted in a loss of directional control and collision with a ditch. A contributing factor was the high crosswind.
- [NTSB FTW98LA154](https://openairdocs.org/ntsb/FTW98LA154.md): Grumman American AA-1B · Tulsa, OK · Accident · Minor injuries · Limited investigation · Final report · Mar 22, 1998 · N9940L · Substantial damage
  > The complete loss of engine power for an undetermined reason. A factor was the lack of suitable terrain for the forced landing.
- [NTSB FTW98LA137](https://openairdocs.org/ntsb/FTW98LA137.md): Cessna 172K · Marietta, OK · Accident · Serious injuries · Limited investigation · Final report · Mar 1, 1998 · N84561 · Substantial damage
  > The pilot's improper compensation for the wind conditions. A factor was the crosswind.
- [NTSB FTW98IA130](https://openairdocs.org/ntsb/FTW98IA130.md): Saab-Scania 340B · Lawton, OK · Incident · No injuries · Incident investigation · Final report · Feb 22, 1998 · N396AE · Minor damage
  > the collapse of the left main landing gear during landing roll as result of a shorted weight-on-wheels relay. Contributing factors were the insufficient information available to the flight crew in the company's quick reference handbook (QRH), and the…
- [NTSB FTW98LA132](https://openairdocs.org/ntsb/FTW98LA132.md): Cessna 152 · Norman, OK · Accident · No injuries · Limited investigation · Final report · Feb 20, 1998 · N5128Q · Substantial damage
  > Fuel exhaustion due to the student pilot's failure to refuel. A factor was the lack of suitable terrain for the forced landing.
- [NTSB FTW98LA124](https://openairdocs.org/ntsb/FTW98LA124.md): Piper PA-22-108 · Frederick, OK · Accident · No injuries · Limited investigation · Final report · Feb 3, 1998 · N4654Z · Substantial damage
  > The loss of wheel brakes due to the failure of the brake actuating cable. A factor was the tailwind.
- [NTSB FTW98LA112](https://openairdocs.org/ntsb/FTW98LA112.md): Piper PA-28R-201T · Lone Grove, OK · Accident · Serious injuries · Limited investigation · Final report · Jan 29, 1998 · N43763 · Substantial damage
  > The total loss of engine power for an undetermined reason. Factors were the total loss of electrical power resulting from a separated alternator cable due to improper maintenance by unknown maintenance personnel, the lack of suitable terrain for the forced…
- [NTSB FTW98LA108](https://openairdocs.org/ntsb/FTW98LA108.md): Cessna 340 · Wagoner, OK · Accident · No injuries · Limited investigation · Final report · Jan 28, 1998 · N340CK · Substantial damage
  > the entrance of deer onto the runway, which resulted in an unavoidable impact. Darkness was a related factor.
- [NTSB FTW98LA103](https://openairdocs.org/ntsb/FTW98LA103.md): Cessna 340A · Bethany, OK · Accident · No injuries · Limited investigation · Final report · Jan 8, 1998 · N26956 · Substantial damage
  > The pilot's flight into known adverse weather conditions which resulted in an inadvertent stall due to airframe ice. A factor was the icing conditions.
- [NTSB FTW98LA085](https://openairdocs.org/ntsb/FTW98LA085.md): Mooney M20J · Westport, OK · Accident · No injuries · Limited investigation · Final report · Jan 2, 1998 · N201LG · Substantial damage
  > The pilot's inadequate compensation for the existing wind conditions. A factor was gusty winds.

## 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") = 1998
  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=1998

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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.