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Accidents · NTSB DEN89LA134 · Final report

Ryan ST-3KR accident near La Salle, Colorado, June 6, 1989

On June 6, 1989 at about 3:45 pm local time, a Ryan ST-3KR, registered N48749, was substantially damaged in an accident near La Salle, Colorado. It was a personal flight under general aviation rules (Part 91). 1 person was seriously injured. The weather was visual conditions (good weather).

The NTSB's probable cause their words, unchanged

FOREIGN MATERIAL (INSECT NEST) BLOCKING THE FUEL SYSTEM VENT, WHICH RESULTED IN A RESTRICTION OF FUEL FLOW AND FUEL STARVATION. A RELATED FACTOR WAS THE ALFALFA CROP IN THE EMERGENCY LANDING AREA.

Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.

What the record shows

Date
June 6, 1989 · about 3:45 pm local time
Place
La Salle, Colorado · map
Type
Accident
Injuries
1 person was seriously injured.
Weather
visual conditions (good weather)
Aircraft
Ryan ST-3KR
Registration
N48749 · no longer on the register · serial 1402
Damage
Substantial damage
Flight
Personal flight · general aviation rules (Part 91)

The NTSB's narrative final · quoted from the NTSB record

THE PRIVATE PLT WAS FLYING HIS ANTIQUE AIRPLANE ON A LOCAL FLIGHT TO CHECK THE COMPASS. THIS PLANE HAD BEEN UNDER RESTORATION FOR AN EXTENDED TIME PRIOR TO THIS FLIGHT.DURING FLIGHT, THE ENGINE LOST POWER AND THE PLT MADE A FORCED LANDING IN AN ALFALFA FIELD. AFTER ROLLING 200 FT IN 18 INCH HIGH ALFALFA, THE PLANE NOSED OVER. A POST ACCIDENT INSPECTION REVEALED EVIDENCE THAT THE FUEL TANK VENT WAS CLOGGED BY AN INSECT NEST (DIRT), WHICH RESTRICTED THE FLOW OF FUEL. AFTER THE VENT WAS CLEANED, THE ENGINE RAN NORMALLY.

The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.

The factual record from the NTSB's investigation tables, in plain English

Pilot

  • Certificate: private
  • Ratings: single-engine land; single-engine sea
  • Flight time: 759 hours in all; 148 in this make and model; 25 in the last 90 days; 3 in the last 30 days; 713 as pilot in command
  • Medical certificate: Class 3 (valid medical--w/ waivers/lim.)
  • Seat: rear

The aircraft

  • Airframe total time: 3,514 hours
  • Last inspection: annual inspection, May 8, 1989; 2 hours since
  • Maximum gross weight: 1,860 lb
  • Seats: 2
  • Landing gear: fixed
  • Engine: Kinner R-56 (piston); 0 hours total

The flight

  • Departed from: GXY Greeley CO at 3:15 pm
  • Destination: GXY
  • Flight plan: none
  • Runway 0

Weather at the time

  • Light: daylight
  • Visibility: 15 statute miles
  • Sky: scat at 3,000 ft
  • Temperature: 61°F (16°C), dew point 0°F (-18°C)

Injuries

FatalSeriousMinorNone
Crew1

Documents from the investigation the NTSB's docket: the evidence folder behind the report

The docket, the folder of records gathered during an investigation (maintenance records, photographs, witness statements, examinations), has not been read from the NTSB for this case yet; the list appears here once it has. Open the docket at the NTSB.

Everything on this page comes from the NTSB's public records. The narrative, probable cause and findings are the NTSB's own words; the coded tables behind the report are written out in plain English, with pilots' ages, home towns and medical details left out. The documents and photographs are the NTSB's docket, shown as the NTSB released them. This site's own text never names anyone involved. A preliminary report can change; the final report usually follows one to two years later, and the page is refreshed when it does.