# NTSB investigations: Lycoming 0-540 series, 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 LAX94LA074](https://openairdocs.org/ntsb/LAX94LA074.md): Piper PA-23-250 · Showlow, AZ · Accident · Minor injuries · Limited investigation · Final report · Dec 17, 1993 · N8769B · Substantial damage
  > the pilot's poorly planned approach, improper emergency procedures, and his failure to feather the propeller. The inoperative fuel selector valve was a factor in this accident.
- [NTSB LAX94FA058](https://openairdocs.org/ntsb/LAX94FA058.md): Siai-Marchetti F-260 · Santa Monica, CA · Accident · 3 fatal · Field investigation · Final report · Nov 26, 1993 · N126MJ · Destroyed
  > the dual student pilot's failure to maintain minimum air speed in flight which resulted in an inadvertent stall/spin. Contributing to the accident was the improper weight and balance, inadequate altitude, and inadequate supervision.
- [NTSB MIA94LA026](https://openairdocs.org/ntsb/MIA94LA026.md): Piper PA-24-250 · Labelle, FL · Accident · No injuries · Limited investigation · Final report · Nov 21, 1993 · N5755P · Substantial damage
  > The pilot-in-command exceeding the structural limits of the airplane's design limits by in-flight over-stress that resulted in damage to the gear extension system, fuselage and control surfaces.
- [NTSB FTW94FA031](https://openairdocs.org/ntsb/FTW94FA031.md): Piper PA-24-250 · Longview, TX · Accident · 1 fatal · Field investigation · Final report · Nov 10, 1993 · N6651P · Destroyed
  > Poor judgment of the pilot due to impairment from consumption of alcohol and use of a drug (marijuana), and his failure to correct a descent, while maneuvering at low altitude. A factor related to the accident was: the pilot's psychological condition.
- [NTSB SEA94LA013](https://openairdocs.org/ntsb/SEA94LA013.md): Cessna 172N · Renton, WA · Accident · No injuries · Limited investigation · Final report · Oct 9, 1993 · N7367E · Substantial damage
  > The student pilot's failure to maintain directional control during landing. The crosswind was a factor.
- [NTSB SEA93LA212](https://openairdocs.org/ntsb/SEA93LA212.md): Cessna 182RG · Vancouver, WA · Accident · No injuries · Limited investigation · Final report · Sep 23, 1993 · N736ZV · Substantial damage
  > The pilot's inadvertent landing gear retraction.
- [NTSB LAX93LA342](https://openairdocs.org/ntsb/LAX93LA342.md): Piper PA-24-250 · Hesperia, CA · Accident · No injuries · Limited investigation · Final report · Sep 4, 1993 · N5523P · Substantial damage
  > The aircraft's encounter with a low level windshear and the pilot's inadequate compensation for the existing wind conditions.
- [NTSB ANC93LA159](https://openairdocs.org/ntsb/ANC93LA159.md): Morgan Steen Skybolt MI-2 · Nome, AK · Accident · 1 fatal · Limited investigation · Final report · Aug 29, 1993 · N23JM · Substantial damage
  > The pilot delayed in recovering from the aerobatic maneuver.
- [NTSB NYC93LA168](https://openairdocs.org/ntsb/NYC93LA168.md): Piper PA-25-225 · Chesapeake, VA · Accident · No injuries · Limited investigation · Final report · Aug 26, 1993 · N9556P · Substantial damage
  > The loosening of the crankshaft geardrive as a resulted of a sheared bolt and guide pin which resulted in the loss of engine power. A factor was a forced landing on a crop field.
- [NTSB CHI93DTG03](https://openairdocs.org/ntsb/CHI93DTG03.md): Piper PA-25-235 · Washburn, ND · Accident · No injuries · Final report · Aug 20, 1993 · N4693Y · Substantial damage
  > the loss of engine power due to a magneto failure.
- [NTSB LAX93FA311](https://openairdocs.org/ntsb/LAX93FA311.md): Robinson R44 · El Monte, CA · Accident · 3 fatal · Field investigation · Final report · Jul 31, 1993 · N445RH · Destroyed
  > Fatigue failure of the cyclic control (stick) assembly, which resulted in loss of cyclic (pitch & roll) control.
- [NTSB CHI93LA251](https://openairdocs.org/ntsb/CHI93LA251.md): Piper PA-25-235 · Clarence, MO · Accident · Minor injuries · Limited investigation · Final report · Jul 12, 1993 · N8906L · Substantial damage
  > Is the pilot in command's failure to maintain proper clearance. A factor to the accident were the trees at the end of the field to be sprayed.
- [NTSB ATL93LA126](https://openairdocs.org/ntsb/ATL93LA126.md): Piper PA-25-260 · Bainbridge, GA · Accident · No injuries · Limited investigation · Final report · Jul 7, 1993 · N4874Y · Substantial damage
  > The failure of the landing gear axle.
- [NTSB ATL93LA121](https://openairdocs.org/ntsb/ATL93LA121.md): Piper PA-25-235 · Bainbridge, GA · Accident · 1 fatal · Limited investigation · Final report · Jul 2, 1993 · N8659L · Substantial damage
  > The pilot's failure to maintain adequate clearance from the ground.
- [NTSB NYC93LA131](https://openairdocs.org/ntsb/NYC93LA131.md): Piper PA-32 · Spencer, MA · Accident · Minor injuries · Limited investigation · Final report · Jun 28, 1993 · N3490W · Substantial damage
  > The pilot's inadequate preflight planning for the high density altitude departure and the delay in aborting the takeoff roll, with insufficient runway remaining, resulting in a collision with trees
- [NTSB NYC93LA129](https://openairdocs.org/ntsb/NYC93LA129.md): Piper PA-28-236 · West Milford, NJ · Accident · Serious injuries · Limited investigation · Final report · Jun 27, 1993 · N8220J · Substantial damage
  > A manufacturer's defect which resulted in fatigue failure of the magneto impluse coupling spring and the loss of engine power. A factor was unsuitable terrain.
- [NTSB CHI93LA175](https://openairdocs.org/ntsb/CHI93LA175.md): Piper PA-25-235 · Mexico, MO · Accident · Serious injuries · Limited investigation · Final report · May 19, 1993 · N8787L · Substantial damage
  > a loss of engine power for undetermined reasons. A factor in the accident was the soft field landing site.
- [NTSB BFO93LA091](https://openairdocs.org/ntsb/BFO93LA091.md): Cessna 172N · Petersburg, OH · Accident · No injuries · Limited investigation · Final report · May 18, 1993 · N7355E · Substantial damage
  > The pilot's failure to attain the proper touchdown point while attempting to land on a wet grass strip, and his failure to perform a go around. The wet grass runway was a factor.
- [NTSB LAX93LA196](https://openairdocs.org/ntsb/LAX93LA196.md): Dornier DO-28 · Paradise, CA · Accident · No injuries · Limited investigation · Final report · May 2, 1993 · N12828 · Destroyed
  > The poor in flight fuel consumption calculations by the pilot and the pilot's in flight decision not to switch fuel tanks which caused the total failure of both of the airplane's engines. Factors relating to this accident were fuel starvation and the high…
- [NTSB SEA93LA101](https://openairdocs.org/ntsb/SEA93LA101.md): Piper PA-25-235 · Forest Grove, OR · Accident · Serious injuries · Limited investigation · Final report · Apr 24, 1993 · N9637P · Substantial damage
  > The pilot in command's inadequate preflight planning. Factors contributing to the accident were the wet terrain, tailwind, trees, and wires.
- [NTSB FTW93FA132](https://openairdocs.org/ntsb/FTW93FA132.md): Piper PA-23-250 · Henryetta, OK · Accident · 1 fatal · Field investigation · Final report · Apr 18, 1993 · N4689P · Destroyed
  > The pilot's decision to fly into known adverse weather conditions and the ensuing spatial disorientation. Factors were the weather, and the pilot's decision to fly into IMC with inadequate flight and navigational equipment installed in the aircraft.
- [NTSB MIA93WA098](https://openairdocs.org/ntsb/MIA93WA098.md): Piper PA-32-260 · N. Eleuthera I., Bahamas · Accident · No injuries · Foreign investigation · Apr 11, 1993 · N3910W · Substantial damage
- [NTSB MIA93IA083](https://openairdocs.org/ntsb/MIA93IA083.md): Aero Commander 500 · Everglades City, FL · Incident · No injuries · Incident investigation · Final report · Mar 7, 1993 · N3836C · Minor damage
  > The preexisting fatigue cracking of the propeller hub arm in the bearing retention radius due to polishing and wear of the radius from contact with the split rings, resulting in a propeller blade separating from the propeller hub on the takeoff ground run,…
- [NTSB MIA93LA063](https://openairdocs.org/ntsb/MIA93LA063.md): Bates Barracuda I · Bay St. Louis, MS · Accident · No injuries · Limited investigation · Final report · Feb 6, 1993 · N852DH · Destroyed
  > Undetermined due to the destruction of the airplane after the gear collapsed on landing.
- [NTSB CHI93LA088](https://openairdocs.org/ntsb/CHI93LA088.md): Piper PA-28-235 · Lafayette, IN · Accident · No injuries · Limited investigation · Final report · Feb 6, 1993 · N8784W · Substantial damage
  > The pilot-in-command's decision to initiate flight into known icing conditions which resulted in an accummulation of airframe ice. The icing conditions and the pilot's disregard of the weather advisory were factors.
- [NTSB CHI93LA087](https://openairdocs.org/ntsb/CHI93LA087.md): Piper PA-32 · Austin, MN · Accident · Minor injuries · Limited investigation · Final report · Feb 4, 1993 · N3658W · Substantial damage
  > The pilot's failure to maintain altitude. The pilot's continued flight into IMC, diverted attention and the environmental conditions were factors.

## 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 ('41532'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41532&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.