# NTSB investigations: Amateur-built UNKNOWN ENG, 1993

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 FTW94LA004](https://openairdocs.org/ntsb/FTW94LA004.md): Raven Rally RX7 · Albuquerque, NM · Accident · Minor injuries · Limited investigation · Final report · Oct 4, 1993 · N27953 · Substantial damage
  > Pilot's failure to maintain aircraft control. A factor was the gusty winds.
- [NTSB LAX93LA370](https://openairdocs.org/ntsb/LAX93LA370.md): Beech A-36 · Firebaugh, CA · Accident · No injuries · Limited investigation · Final report · Sep 25, 1993 · N7246Z · Substantial damage
  > the CFI's inadequate supervision of the flight and his delay in taking remedial action; the dual student's premature liftoff and improper use of the flight controls. The high vegetation and soft terrain were factors in this accident.
- [NTSB FTW93LA263](https://openairdocs.org/ntsb/FTW93LA263.md): Wsk Pzl Mielec M-18A Dromader · Frogmore, LA · Accident · 1 fatal · Limited investigation · Final report · Sep 23, 1993 · N452TC · Destroyed
  > The pilot's failure to maintain clearance with the powerline. A factor was the dusk light condition.
- [NTSB MIA93LA196](https://openairdocs.org/ntsb/MIA93LA196.md): Sukhoi SU-26M · Natchez, MS · Accident · Minor injuries · Limited investigation · Final report · Sep 16, 1993 · N26CY · Substantial damage
  > The pilot-in-command's failure to accurately calculate fuel consumption resulting in total loss of engine power due to fuel exhaustion while approaching the destination airport.
- [NTSB ANC93IA176](https://openairdocs.org/ntsb/ANC93IA176.md): Sikorsky C54A · Anita Bay, AK · Incident · No injuries · Incident investigation · Final report · Sep 12, 1993 · N44094 · Minor damage
  > The separation of the turbine blade from the power turbine disc.
- [NTSB MIA93LA185](https://openairdocs.org/ntsb/MIA93LA185.md): Keuthan Buccaneer II · Cocoa, FL · Accident · Serious injuries · Limited investigation · Final report · Aug 27, 1993 · N693KA · Substantial damage
  > Failure of maintenance personnel to properly reinstall a bolt and nut in the elevator control linkage, which resulted in a disconnect of the linkage and loss of elevator control.
- [NTSB SEA93LA202](https://openairdocs.org/ntsb/SEA93LA202.md): Kope Zenith CH200 · Waterville, WA · Accident · Serious injuries · Limited investigation · Final report · Aug 21, 1993 · N456K · Substantial damage
  > A short in the electrical wiring to the fuel pump.
- [NTSB CHI93DEC01](https://openairdocs.org/ntsb/CHI93DEC01.md): Bradford Pietenpol Skyscout · Eaton Rapids, MI · Accident · Minor injuries · Final report · Aug 21, 1993 · N4301D · Substantial damage
  > the pilot's failure to maintain airspeed which resulted in an inadvertant stall. Factors related to the accident were the low altitude and the restricted movement of the carburetor needle.
- [NTSB FTW93LA241](https://openairdocs.org/ntsb/FTW93LA241.md): Cessna 140 · Bastrop, LA · Accident · No injuries · Limited investigation · Final report · Aug 16, 1993 · N2673N · Substantial damage
  > The pilot's failure to maintain directional control and his improper compensation for existing wind conditions. Factors were the crosswind and the pilot's lack of total experience in the type of aircraft.
- [NTSB SEA93LA174](https://openairdocs.org/ntsb/SEA93LA174.md): Brauch Glasair · Blanding, UT · Accident · 2 fatal · Limited investigation · Final report · Aug 7, 1993 · N365WB · Destroyed
  > The loss of engine power resulting from inadequate maintenance inspection by the pilot, a leak from loose fuel system line fittings, and fuel exhaustion. A factor relating to the accident was the rough/uneven terrain.
- [NTSB CHI93LA295](https://openairdocs.org/ntsb/CHI93LA295.md): Gardner SEA RAY · Oshkosh, WI · Accident · Minor injuries · Limited investigation · Final report · Jul 31, 1993 · N703SR · Substantial damage
  > The pilot in command's not maintaining proper climb rate. A factor was the abrupt control interference by the passenger.
- [NTSB DEN93LA086](https://openairdocs.org/ntsb/DEN93LA086.md): Balloon Works 7B-15 · Colorado Sprgs, CO · Accident · Serious injuries · Limited investigation · Final report · Jul 24, 1993 · N9067Y · No damage
  > The passenger's failure to assume the proper landing position as instructed by the pilot in command. A factor was: the high wind.
- [NTSB SEA93LA150](https://openairdocs.org/ntsb/SEA93LA150.md): Hoopes Hummelbird · Salt Lake City, UT · Accident · No injuries · Limited investigation · Final report · Jul 8, 1993 · N2227S · Substantial damage
  > A fractured crankshaft.
- [NTSB DEN93FA075](https://openairdocs.org/ntsb/DEN93FA075.md): Wiley Pitts S-1-E · Walters, OK · Accident · 1 fatal · Field investigation · Final report · Jul 8, 1993 · N70BW · Destroyed
  > Performance of an aerobatic maneuver at an altitude insufficient for adequate terrain clearance.
- [NTSB NYC93LA119](https://openairdocs.org/ntsb/NYC93LA119.md): Start & Flug H-101 Salto · Columbus, OH · Accident · No injuries · Limited investigation · Final report · Jun 18, 1993 · N101AZ · Substantial damage
  > The pilot's selection of unsuitable terrain for landing. A factor related to the accident was the interruption of the glider pilot's planned approach by a powered airplane.
- [NTSB FTW93LA188](https://openairdocs.org/ntsb/FTW93LA188.md): Reims Cessna FA 150K · Willis, TX · Accident · No injuries · Limited investigation · Final report · Jun 13, 1993 · N922SZ · Substantial damage
  > Loss of partial engine power due to stuck exhaust valve and exhaust and intake valve binding with carbon buildup. A factor was the lack of suitable terrain
- [NTSB MIA93LA142](https://openairdocs.org/ntsb/MIA93LA142.md): Sayer, Trevor A. Rans S-12 · New Smyrna Bch, FL · Accident · No injuries · Limited investigation · Final report · Jun 12, 1993 · N162JT · Substantial damage
  > Failure of the pilot to maintain adequate airspeed and inadvertent stall/spin. Contributing to the accident was total loss of engine power due to fuel starvation. This was due to improper placement of a component of the fuel system by the builder/pilot.
- [NTSB DEN93LA065](https://openairdocs.org/ntsb/DEN93LA065.md): Cessna 182A · Stratton, CO · Accident · No injuries · Limited investigation · Final report · Jun 3, 1993 · N2131G · Substantial damage
  > The selection of unsuitable terrain for a precautionary landing by the pilot in command. A factor was: misjudging the deteriorating weather.
- [NTSB CHI93LA186](https://openairdocs.org/ntsb/CHI93LA186.md): Ercoupe 415C · Derby, KS · Accident · Minor injuries · Limited investigation · Final report · May 31, 1993 · N37139 · Substantial damage
  > The pilot in command's misjudged approach to landing.
- [NTSB LAX93LA228](https://openairdocs.org/ntsb/LAX93LA228.md): WSK PZL KR-03A · Avenal, CA · Accident · No injuries · Limited investigation · Final report · May 26, 1993 · N6644A · Substantial damage
  > The glider's encounter with the downdraft. Contributing to this accidents were the turbulence and the powerlines.
- [NTSB SEA93LA116](https://openairdocs.org/ntsb/SEA93LA116.md): Rambow Monnett Moni · Ritzville, WA · Accident · Serious injuries · Limited investigation · Final report · May 21, 1993 · N106NR · Substantial damage
  > The improper landing flare.
- [NTSB FTW93LA146](https://openairdocs.org/ntsb/FTW93LA146.md): Pzl-Mielec PZL-M-18 · De Witt, AR · Accident · Minor injuries · Limited investigation · Final report · May 1, 1993 · N28587 · Destroyed
  > Compensation for wind improper by pilot. Factors were tailwind and downdraft
- [NTSB FTW93LA124](https://openairdocs.org/ntsb/FTW93LA124.md): Violet Dragonfly · Carlsbad, NM · Accident · No injuries · Limited investigation · Final report · Apr 11, 1993 · N48RV · Substantial damage
  > The improper installation of the control stick assembly and the subsequent separation of the flight control stick assembly from the mount
- [NTSB MIA93LA088](https://openairdocs.org/ntsb/MIA93LA088.md): Christen Industries Pitts S1-T · Naples, FL · Accident · Minor injuries · Limited investigation · Final report · Mar 21, 1993 · N218MC · Substantial damage
  > The installation of an improper designed intake tube and air filter by the nonmechanic rated pilot-in-command, which resulted in moisture build up and collapse of the air filter, which resulted in blockage of air flow to the engine and loss of engine power.…
- [NTSB LAX93LA148](https://openairdocs.org/ntsb/LAX93LA148.md): Langerud Varieze · Zenia, CA · Accident · 1 fatal · Limited investigation · Final report · Mar 2, 1993 · N91CL · Destroyed
  > The pilot's poor weather evaluation and continued flight into instrument meteorological conditions. The low ceiling was a factor.
- [NTSB LAX93LA135](https://openairdocs.org/ntsb/LAX93LA135.md): Downer Aircraft Industries KR-1 · Prescott, AZ · Accident · Serious injuries · Limited investigation · Final report · Feb 23, 1993 · N9HD · Destroyed
  > The total loss of engine power for undetermined reasons. A factor in the accident was the lack of a suitable landing area at the time of the power interruption.
- [NTSB LAX93LA124](https://openairdocs.org/ntsb/LAX93LA124.md): Bertone Challenger II · Boulder City, NV · Accident · 1 fatal · Limited investigation · Final report · Feb 18, 1993 · N4391V · Destroyed
  > The pilot's loss of airplane control due to physical impairment as a result of either drugs or other cardiovascular reasons, or both.

## 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") = 1993
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('99999'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=99999&year=1993

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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.