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Accidents · NTSB LAX89LA209 · Final report

Aeronca 50F accident near Ontario, California, May 30, 1989

On May 30, 1989 at about 11:42 pm local time, a Aeronca 50F, registered N23954, was substantially damaged in an accident near Ontario, California (Ontario airport). It was a personal flight under general aviation rules (Part 91). No one was hurt; 2 people were on board or involved. The weather was visual conditions (good weather).

The NTSB's probable cause their words, unchanged

THE PILOT'S INABILITY TO COMPENSATE FOR EXISTING WIND CONDITIONS, RESULTING IN THE INABILITY TO MAINTAIN A CLIMB.

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

What the record shows

Date
May 30, 1989 · about 11:42 pm local time
Place
Ontario, California · Ontario · map
Type
Accident
Injuries
No one was hurt; 2 people were on board or involved.
Weather
visual conditions (good weather)
Aircraft
Aeronca 50F · all 50Fs on the register
Registration
N23954 · registry record · serial F6189
Damage
Substantial damage
Flight
Personal flight · general aviation rules (Part 91)

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

THE PRIVATE PILOT REPORTED THAT THE AIRPLANE ENCOUNTERED EITHER A STRONG DOWN DRAFT OR WIND SHEAR DURING CLIMBOUT AT APPROXIMATELY 150 FT AGL. HE SAID THAT HE WAS UNABLE TO STOP THE DESCENT AND THE AIRPLANE SETTLED TO THE GROUND.

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
  • Flight time: 330 hours in all
  • Medical certificate: Class 2
  • Seat: unk

The aircraft

  • Last inspection: annual inspection
  • Maximum gross weight: 1,130 lb
  • Seats: 2
  • Landing gear: fixed
  • Engine: Unknown UNKNOWN (piston); 0 hours total

The flight

  • Flight plan: none
  • Runway 0

Weather at the time

  • Light: daylight
  • Wind: from 270° at 16 knots
  • Visibility: 10 statute miles
  • Sky: clear
  • Temperature: 77°F (25°C), dew point 50°F (10°C)
  • Observation at 11:46 pm from ONT, 5 miles away

Injuries

FatalSeriousMinorNone
Crew1
Passengers1

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.