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Accidents · NTSB FTW92LA196 · Final report

Cessna 150F accident near Granbury, Texas, July 31, 1992

On July 31, 1992 at about 1:20 am local time, a Cessna 150F, registered N6650F, was substantially damaged in an accident near Granbury, Texas. It was a personal flight under general aviation rules (Part 91). 2 people had minor injuries. The weather was visual conditions (good weather).

The NTSB's probable cause their words, unchanged

THE PILOT'S INADVERTENT USE OF CARBURETOR HEAT DURING TAKEOFF. THE LACK OF SUITABLE TERRAIN FOR A FORCED LANDING WAS A FACTOR.

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

What the record shows

Date
July 31, 1992 · about 1:20 am local time
Place
Granbury, Texas · map
Type
Accident
Injuries
2 people had minor injuries.
Weather
visual conditions (good weather)
Aircraft
Cessna 150F · all 150Fs on the register
Registration
N6650F · no longer on the register · serial 15063202
Damage
Substantial damage
Flight
Personal flight · general aviation rules (Part 91)

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

THE STUDENT PILOT AND HIS PASSENGER WERE DEPARTING FROM THE PRIVATE AIRSTRIP WHEN THE PILOT NOTED A 200 RPM DROP ON THE ENGINE TACHOMETER. THE PILOT ESTIMATED HIS ALTITUDE TO BE 120 FEET ABOVE GROUND LEVEL. THE PILOT STATED THAT HOUSES WERE BELOW THE AIRPLANE SO HE ELECTED TO CONTINUE TOWARD THE LAKE. AFTER CLEARING THE RESIDENTIAL AREA, THE AIRPLANE DESCENDED OVER THE LAKE AND THE PILOT DITCHED INTO THE WATER AT 40 MPH. BEFORE THE AIRPLANE SANK, THE PILOT AND PASSENGER EXITED AND WERE PICKED UP BY A NEAR BY BOATER. THE FAA INSPECTOR EXAMINED THE AIRPLANE AND NOTED THE CARBURETOR HEAT CONTROL IN THE FULL 'ON' POSITION. NO AIRCRAFT MECHANICAL ANOMALIES WERE NOTED.

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: student
  • Flight time: 165 hours in all; 15 in this make and model
  • Medical certificate: Class 3 (valid medical--w/ waivers/lim.)
  • Seat: left

The aircraft

  • Last inspection: inspection type not recorded, January 2, 1900
  • Maximum gross weight: 1,600 lb
  • Seats: 2
  • Landing gear: fixed
  • Engine: Continental O-200-A (piston); 0 hours total

The flight

  • Departed from: NONE Nassau Bay TX at 1:15 am
  • Flight plan: none
  • Runway 0

Weather at the time

  • Light: daylight
  • Wind: from 180° at 5 knots
  • Visibility: 20 statute miles
  • Sky: clear
  • Temperature: 90°F (32°C), dew point 0°F (-18°C)
  • Altimeter: 29.00 inHg

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.