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Accidents · NTSB CEN10LA043 · Final report

Amateur-built SKYBOLT/BM accident near Altus, Oklahoma, November 8, 2009

On November 8, 2009 at about 5:22 pm local time, a amateur-built SKYBOLT/BM, registered N6644, was destroyed in an accident during maneuvering (low-alt flying) near Altus, Oklahoma (Altus/Quartz Mountain Regional airport). It was a personal flight under general aviation rules (Part 91). 2 people were killed. The weather was visual conditions (good weather).

The NTSB's probable cause their words, unchanged

The pilot's poor judgment by performing intentional low-level maneuvers that resulted in an inadvertent stall/spin at an altitude to low to affect a safe recovery.

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

What the record shows

Date
November 8, 2009 · about 5:22 pm local time
Place
Altus, Oklahoma · Altus/Quartz Mountain Regional · map
Type
Accident
Injuries
2 people were killed.
Weather
visual conditions (good weather)
Aircraft
Amateur-built SKYBOLT/BM
Registration
N6644 · no longer on the register · serial S-BM-001
Damage
Destroyed
Flight
Personal flight · general aviation rules (Part 91)

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

At the invitation of the pilot, the 17-year-old passenger and his father went to the airport for an airplane ride. They saw the airplane fly over head and the pilot performed “a wing-over maneuver” and landed. After his son boarded the airplane, the airplane took off. About 50 feet off the ground, the pilot made an aggressive climb at a 45 degree angle, banked hard to the right, and headed west, still climbing. The father said that at one point, it looked like the airplane was in a vertical climb. The pilot then performed a wing over-maneuver and went into a nose dive and "it may have even spiraled." One witness estimated the airplane was at 25 feet off the ground when it appeared to do left and right turns. Shortly after that, he made a right turn, "not a radical turn, and the nose of the plane went down. There appeared to be a wobble or possibly some spin or flutter in the tail.” A third witness said the airplane "lifted off, did a steep turn at midfield, climbed and departed to the west." He then saw the airplane return and make "a wing-over type maneuver to the right (East) in [a] descending turn." The airport's line chief, who did not witness the accident, said he saw the pilot take off earlier and perform a high speed low pass (about half a wing length off the ground), waving his wings to the people at his hangar. He then executed a vertical climb out and steep bank of at least 60 degrees or more and departed to the north. On each flight, the pilot would do "his same routine." A pilot based at the airport, who also did not witness the accident, said, he noticed the accident airplane take off on runway 17 at midfield and at an altitude of approximately 100 feet, make a right turn and depart the airport to the west at about the same altitude. The turn was made with a bank angle "well in excess of 60 degrees." He said he had observed the pilot "doing maneuvers in the pattern that were not standard maneuvers." On one occasion, he saw the pilot depart and do "a steep turn at midfield at a very low altitude. He would also fly down the runway at low altitude and pull up into a steep climb and bank around into downwind." The pilot's logbook showed he had logged a total of 419.7 hours, of which 23.0 hours were documented Skybolt time: 12.7 hours were dual instruction, and 10.3 hours were pilot-in-command. Only two aerobatic entries were made.

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

What happened, in order

  1. Aerodynamic stall/spin during maneuvering (low-alt flying) defining event
  2. Low altitude operation/event during maneuvering (low-alt flying)

The NTSB's findings

  • cause Personnel issues › Miscellaneous › Intentional act › (general) › Pilot
  • cause Personnel issues › Action/decision › Info processing/decision › Decision making/judgment › Pilot
  • Personnel issues › Psychological › Personality/attitude › Self confidence › Pilot

Pilot

  • Certificate: private
  • Ratings: single-engine land
  • Flight time: 420 hours in all; 73 in this make and model; 7 in the last 90 days; 3 in the last 30 days; 287 as pilot in command
  • Last flight review: June 5, 2009
  • Medical certificate: Class 3 (without waivers/limitations)
  • Seat: rear
  • Injury: fatal

The aircraft

  • Airframe total time: 178 hours
  • Last inspection: condition inspection, August 1, 2009
  • Maximum gross weight: 2,250 lb
  • Seats: 2
  • Landing gear: fixed
  • Engine: Lycoming IO-540-C4B5 (piston); 0 hours total

The flight

  • Departed from: AXS Altus OK at 5:15 pm
  • Destination: AXS Altus OK
  • Flight plan: none

Weather at the time

  • Light: daylight
  • Wind: from 190° at 8 knots
  • Visibility: 10 statute miles
  • Sky: overcast at 2,200 ft
  • Temperature: 66°F (19°C), dew point 57°F (14°C)
  • Altimeter: 30.06 inHg
  • Observation at 5:10 pm from AXS, 1 miles away

Injuries

FatalSeriousMinorNone
Flight 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.