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Accidents · NTSB BFO91DIA01 · Final report

Amateur-built PITTS S accident near Warrenton, Virginia, June 8, 1991

On June 8, 1991 at about 7:00 pm local time, a amateur-built PITTS S, registered N711B, was destroyed in an accident near Warrenton, Virginia (Horse Feathers airport). 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

THE PILOT MISJUDED ALTITUDE AND CLEARANCE ABOVE THE TERRAIN. CONTRIBUTING TO THE ACCIDENT WAS AEROBATIC MANEUVER PERFORMED AT LOW ALTITUDE.

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

What the record shows

Date
June 8, 1991 · about 7:00 pm local time
Place
Warrenton, Virginia · Horse Feathers
Type
Accident
Injuries
1 person was seriously injured.
Weather
visual conditions (good weather)
Aircraft
Amateur-built PITTS S
Registration
N711B · registry record · serial 7275
Damage
Destroyed
Flight
Personal flight · general aviation rules (Part 91)

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

AFTER DOING SEVERAL AEROBATIC MANEUVERS, THE PLT TRIED TO DO A LOOP AT LOW ALTITUDE OVER THE AIRPORT. THE ACFT STRUCK TREES AT THE BOTTOM OF THE LOOP. THE INVESTIGATION DID NOT DISCLOSE EVIDENCE OF MECHANICAL MALFUNCTION.

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: commercial pilot
  • Ratings: multi-engine land; single-engine land
  • Flight time: 3,000 hours in all
  • Medical certificate: Class 2 (valid medical--w/ waivers/lim.)
  • Seat: ctr

The aircraft

  • Last inspection: annual inspection, January 2, 2000
  • Maximum gross weight: 1,250 lb
  • Seats: 1
  • Landing gear: fixed
  • Engine: Lycoming O-320 (piston); 0 hours total

The flight

  • Destination: EZF Fredricksburg VA
  • Flight plan: none
  • Runway 36, 2,600 ft by 60 ft

Weather at the time

  • Light: daylight
  • Sky: clear
  • Temperature: 0°F (-18°C), dew point 0°F (-18°C)
  • Altimeter: 29.00 inHg

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.