# NTSB investigations, 1989, 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 FTW90LA048](https://openairdocs.org/ntsb/FTW90LA048.md): Piper PA-32-260 · Clinton, OK · Accident · No injuries · Limited investigation · Final report · Dec 28, 1989 · N3809W · Substantial damage
  > Pilots failure to correctly maintain the proper glidepath, which caused him to impact short of the runway.
- [NTSB FTW90TL#01](https://openairdocs.org/ntsb/FTW90TL%2301.md): Hughes 369E · Stroud, OK · Accident · No injuries · Class 3 · Final report · Dec 14, 1989 · N600TP · Substantial damage
- [NTSB FTW90LA041](https://openairdocs.org/ntsb/FTW90LA041.md): Bell 47D1 · Ardmore, OK · Accident · Serious injuries · Limited investigation · Final report · Dec 4, 1989 · N2202C · Substantial damage
  > Pilot's inadequate compensation for existing wind conditions. Contributing to the accident were the gusty tail winds.
- [NTSB FTW90LA034](https://openairdocs.org/ntsb/FTW90LA034.md): Champion 7ECA · Shawnee, OK · Accident · No injuries · Limited investigation · Final report · Nov 25, 1989 · N2553F · Substantial damage
  > Failure of the pilot to maintain adequate airspeed during the turn after takeoff, which resulted in a stall. The obstructions (trees) were a factor.
- [NTSB FTW90DPJ02](https://openairdocs.org/ntsb/FTW90DPJ02.md): Logan, B.A. Windrose · Norman, OK · Accident · 1 fatal · Final report · Nov 25, 1989 · N7010L · Destroyed
  > The inadvertent stall and the pilot's improper emergency recovery procedures. A factor was the power loss for undetermined reasons.
- [NTSB FTW90LA027](https://openairdocs.org/ntsb/FTW90LA027.md): Cessna 150M · Norman, OK · Accident · No injuries · Limited investigation · Final report · Nov 15, 1989 · N9258U · Destroyed
  > The pilot inadvertently became lost and disoriented and delayed in obtaining help from the flight service station, which resulted in fuel exhaustion.
- [NTSB FTW90LA022](https://openairdocs.org/ntsb/FTW90LA022.md): Piper PA-28-151 · Marietta, OK · Accident · No injuries · Limited investigation · Final report · Nov 5, 1989 · N536SF · Substantial damage
  > The pilot's use of the wrong runway for takeoff. Factors related to the accident were: the tailwind and rising terrain beyond the departure end of the runway.
- [NTSB FTW90DPJ01](https://openairdocs.org/ntsb/FTW90DPJ01.md): Zimmerman Moni Motorglider · Oklahoma City, OK · Accident · Minor injuries · Final report · Oct 4, 1989 · N15JZ · Substantial damage
  > Power loss due to the deteriorated muffler baffle which was not discovered in the recent annual inspection. A factor was the pilot's failure to properly analyze and correct for the headwind.
- [NTSB FTW90LA006](https://openairdocs.org/ntsb/FTW90LA006.md): Piper PA-22-150 · Edmond, OK · Accident · Serious injuries · Limited investigation · Final report · Oct 3, 1989 · N1940P · No damage
  > Inadequate supervision by the pilot. Factors related to the accident were: darkness and the passenger's impairment from use of a prescription drug (medication).
- [NTSB FTW89IA168](https://openairdocs.org/ntsb/FTW89IA168.md): Cessna 152 · Bethany, OK · Incident · No injuries · Incident investigation · Final report · Sep 15, 1989 · N94808 · 2 aircraft · Minor damage
  > Failure of the Cessna 150 pilot to see-and-avoid the Cessna 152 (inadequate visual lookout), and failure of the tower controller to provide adequate service. Factors related to the accident were: high traffic density, which resulted in frequency congestion,…
- [NTSB FTW89LA163](https://openairdocs.org/ntsb/FTW89LA163.md): Cessna 152 · Ardmore, OK · Accident · Minor injuries · Limited investigation · Final report · Sep 9, 1989 · N5316U · Substantial damage
  > The pilot's loss of control during an attempted go around.
- [NTSB FTW89LA160](https://openairdocs.org/ntsb/FTW89LA160.md): Cessna 210P · Bethany, OK · Accident · No injuries · Limited investigation · Final report · Sep 7, 1989 · N732XW · Substantial damage
  > A loose fuel line connection, due to inadequate maintenance, which resulted in fuel starvation. Factors related to the accident were: darkness and the obstructions (hay bale & approach light pole) in the emergency landing area.
- [NTSB FTW89FA155](https://openairdocs.org/ntsb/FTW89FA155.md): Piper PA-28R-180 · Pauls Valley, OK · Accident · 1 fatal · Field investigation · Final report · Aug 29, 1989 · N7593J · Destroyed
  > Improper planning/decision by the pilot, his lack of understanding of the procedures for operating the aircraft, his improper use of the fuel selector in managing his fuel supply, fuel starvation, and the pilot's failure to know and follow the emergency…
- [NTSB FTW89LA149](https://openairdocs.org/ntsb/FTW89LA149.md): Mooney M20F · Davis, OK · Accident · No injuries · Limited investigation · Final report · Aug 15, 1989 · N6814V · Substantial damage
  > The pilot's failure to maintian directional control and properly flare the airplane during landing.
- [NTSB FTW89LA147](https://openairdocs.org/ntsb/FTW89LA147.md): Mooney M20K · Marietta, OK · Accident · No injuries · Limited investigation · Final report · Aug 12, 1989 · N252WW · Destroyed
  > The pilot's delay in aborting the landing (going around) and his improper raising of the flaps at an inadequate airspeed.
- [NTSB FTW89DRJ01](https://openairdocs.org/ntsb/FTW89DRJ01.md): Cessna 150 · Piedmont, OK · Accident · Serious injuries · Final report · Aug 7, 1989 · N3893J · Substantial damage
  > The pilot's failure to maintain adequate airspeed while buzzing, which resulted in an inadvertent stall.
- [NTSB FTW89LA138](https://openairdocs.org/ntsb/FTW89LA138.md): Piper PA-38-112 · Granite, OK · Accident · No injuries · Limited investigation · Final report · Jul 13, 1989 · N23414 · Substantial damage
  > The pilot did not maintain directional control.
- [NTSB FTW89LA135](https://openairdocs.org/ntsb/FTW89LA135.md): Cessna 421 · Okmulgee, OK · Accident · Serious injuries · Limited investigation · Final report · Jul 13, 1989 · N699PC · Substantial damage
  > Failure of the nose gear extension assembly and the pilot's improper precautionary landing procedures that included securing the engines prior to a point where a safe landing was assured.
- [NTSB FTW89DPJ08](https://openairdocs.org/ntsb/FTW89DPJ08.md): Grumman G-164 · Guymon, OK · Accident · Serious injuries · Final report · Jul 8, 1989 · N788Y · Substantial damage
  > Failure of the upper right engine mount (firewall attach bolt) due to fatigue, and failure of the lower right mounting bolt for an unknown reason, which allowed overload failure of the two remaining mounting bolts and separation of the engine.
- [NTSB FTW89DPJ07](https://openairdocs.org/ntsb/FTW89DPJ07.md): Beech T-34 · Haskell, OK · Accident · 2 fatal · Final report · Jun 24, 1989 · N34CJ · Destroyed
  > Failure of the pilot to maintain adequate airspeed, which resulted in an inadvertent stall. Factors related to the accident were: a leak in the pitot system, failure of the pilot to obtain adequate maintenance/inspection of the pitot system, and his lack of…
- [NTSB FTW89DPJ06](https://openairdocs.org/ntsb/FTW89DPJ06.md): Piper PA-18A · Eva, OK · Accident · No injuries · Final report · Jun 14, 1989 · N6873B · Substantial damage
  > The pilot's failure to maintain visual lookout. A factor was the pilot's limited visual perception due to the ground vehicle.
- [NTSB FTW89LA112](https://openairdocs.org/ntsb/FTW89LA112.md): Swift GC-1B · Luther, OK · Accident · Minor injuries · Limited investigation · Final report · Jun 11, 1989 · N80791 · Substantial damage
  > Failure of the pilot to maintain adequate airspeed, which resulted in an inadvertent stall. The proximity of the trees were a factor.
- [NTSB FTW89LA109](https://openairdocs.org/ntsb/FTW89LA109.md): Piper PA-30 · Bristow, OK · Accident · Minor injuries · Limited investigation · Final report · Jun 6, 1989 · N7959Y · Substantial damage
  > The pilot's improper fuel management and failure of the inflight restart attempt.
- [NTSB FTW89DPJ05](https://openairdocs.org/ntsb/FTW89DPJ05.md): Nord Stampe SV4C · Bartlesville, OK · Accident · No injuries · Final report · Jun 3, 1989 · N47SV · Substantial damage
  > Total failure of the engine connecting rod.
- [NTSB FTW89FA107](https://openairdocs.org/ntsb/FTW89FA107.md): Pitts S-1S · Henryetta, OK · Accident · Serious injuries · Field investigation · Final report · Jun 2, 1989 · N64652 · Destroyed
  > An engine power loss due to the separation and departure of an exhaust stack. The stack failed due to poor weld. Factor(s) was: the terrain conditions of the selected forced landing site.
- [NTSB FTW89LA104](https://openairdocs.org/ntsb/FTW89LA104.md): Bell 47D-1 · Ardmore, OK · Accident · No injuries · Limited investigation · Final report · May 26, 1989 · N2202C · Substantial damage
  > The flight instructor failed to recognize that the aircraft was developing a dangerous sink rate during the autorotation and take corrective action by executing a power recovery. Contributing to the accident were the gusty wind conditions.
- [NTSB FTW89LA098](https://openairdocs.org/ntsb/FTW89LA098.md): Piper PA-28R-200 · Edmond, OK · Accident · No injuries · Limited investigation · Final report · May 24, 1989 · N3940X · Substantial damage
  > Improper maintenance performed by the company mechanic who failed to tighten the oil sump plug, and also failed to safety it.
- [NTSB FTW89FA096](https://openairdocs.org/ntsb/FTW89FA096.md): Piper PA-28-180 · Boise City, OK · Accident · 2 fatal · Field investigation · Final report · May 22, 1989 · N2211T · Destroyed
  > An inadvertent stall resulting from the pilot's failure to maintain control of the aircraft and to maintain sufficient airspeed. The dark night and adverse wind conditions were contributing factors.
- [NTSB FTW89LA095](https://openairdocs.org/ntsb/FTW89LA095.md): Aeronca 65-TAC · Pryor, OK · Accident · Serious injuries · Limited investigation · Final report · May 21, 1989 · N39304 · Substantial damage
  > The failure of the pilot to maintain airspeed during a low pass over the airport after pulling up to clear wires which resulted in a stall.
- [NTSB FTW89LA094](https://openairdocs.org/ntsb/FTW89LA094.md): Cessna 177B · Harrah, OK · Accident · No injuries · Limited investigation · Final report · May 19, 1989 · N1275C · Substantial damage
  > Failure of the pilot to maintain directional control during the landing, which resulted in an inadvertent ground swerve; and his improper planning/decision (indecision) concerning an attempted go-around. The pilot's lack of experience in the type of aircraft…
- [NTSB FTW89DPJ04](https://openairdocs.org/ntsb/FTW89DPJ04.md): Fields Rotorway Exec · Oklahoma City, OK · Accident · Minor injuries · Final report · May 14, 1989 · N28276 · Substantial damage
  > The pilot's failure to maintain proper altitude during the hover taxi.
- [NTSB FTW89LA092](https://openairdocs.org/ntsb/FTW89LA092.md): Bell 47L · Tulsa, OK · Accident · No injuries · Limited investigation · Final report · May 6, 1989 · N6330D · Substantial damage
  > Inadequate supervision of the student by the instructor in that he allowed the student to overpower his control inputs after an unexpected gust of wind moved the tail of the helicopter.
- [NTSB MKC89FA102](https://openairdocs.org/ntsb/MKC89FA102.md): Cessna 150H · Carnegie, OK · Accident · 2 fatal · Field investigation · Final report · May 4, 1989 · N22875 · Destroyed
  > Continued VFR flight by the pilot into instrument meteorological conditions, which resulted in subsequent collision with rising/hilly terrain. Related factors were: inadequate preflight planning/preparation by the pilot, dark night, adverse weather…
- [NTSB FTW89LA088](https://openairdocs.org/ntsb/FTW89LA088.md): Cessna 182 · Owasso, OK · Accident · No injuries · Limited investigation · Final report · Apr 27, 1989 · N5160D · Substantial damage
  > Inadequate preflight by the pilot, which resulted in fuel exhaustion from lack of fuel. The presence of trees was was a contributing factor.
- [NTSB FTW89LA087](https://openairdocs.org/ntsb/FTW89LA087.md): Piper PA-32-300 · Eufaula, OK · Accident · No injuries · Limited investigation · Final report · Apr 26, 1989 · N8654N · Substantial damage
  > The pilot's improper positioning of the fuel selector, which resulted in a loss of power due to fuel starvation, and his failure to followed the emergency procedure. A factor related to the accident was: rough terrain in the emergency landing area.
- [NTSB FTW89DPJ03](https://openairdocs.org/ntsb/FTW89DPJ03.md): Air Tractor 301 · Jefferson, OK · Accident · No injuries · Final report · Apr 7, 1989 · N4369S · Substantial damage
  > Loss of engine power, due to a cracked number 4 cylinder. A factor related to the accident was: the terrace (dirt bank) in the emergency landing area.
- [NTSB FTW89LA069](https://openairdocs.org/ntsb/FTW89LA069.md): Aeronca 7AC · Catoosa, OK · Accident · Minor injuries · Limited investigation · Final report · Mar 23, 1989 · N1790E · Substantial damage
  > Carburetor ice and improper use of carburetor heat. Factors related to the occurrence were: carburetor icing conditions and rough/uneven terrain.
- [NTSB FTW89LA066](https://openairdocs.org/ntsb/FTW89LA066.md): Piper PA-22-160 · Henryetta, OK · Accident · No injuries · Limited investigation · Final report · Mar 15, 1989 · N9023D · Substantial damage
  > The loss of engine power from fuel starvation due to inadequate inflight planning/decision.
- [NTSB FTW89LA058](https://openairdocs.org/ntsb/FTW89LA058.md): Cessna 172 · Marietta, OK · Accident · No injuries · Limited investigation · Final report · Feb 26, 1989 · N734DR · Substantial damage
  > Failure of the pilot to select the proper runway, which resulted in a downwind landing and an overrun of the runway. The gusty tailwind, ditch, and railing (fence) were factors.
- [NTSB FTW89LA040](https://openairdocs.org/ntsb/FTW89LA040.md): Beech V35B · Pawhuska, OK · Accident · No injuries · Limited investigation · Final report · Jan 9, 1989 · N4521S · Substantial damage
  > Fuel tank selector valve being inadvertently switched off and the pilot's emergency procedures inadequate in discoveringand correcting the problem. This resulted in the fuel starvation related power loss. Contributing to the accident was the rough terrain on…

## 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") = 1989
  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=1989

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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.