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Accidents · NTSB ERA20CA291 · Final report

Amateur-built F1 Rocket accident near Finelyville, Pennsylvania, August 18, 2020

On August 18, 2020 at about 5:10 pm local time, a 2018 amateur-built F1 Rocket, registered N88XK, was substantially damaged in an accident during landing (landing roll) near Finelyville, Pennsylvania (Finleyville Airpark 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).

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The NTSB's probable cause their words, unchanged

The pilot's misjudgment of the airplane’s speed and altitude during the landing approach, and his failure to attain the proper touchdown point during landing, which resulted in a runway overrun. Contributing to the accident were his access to a limited set of flight controls, his obstructed vision due to his seating position, and the pilot’s decision to return to the relatively constrained runway following a perceived anomaly of the airplane’s flaps.

Source: NTSB aviation accident database, copy made October 4, 2026. Docket and reports at the NTSB.

What the record shows

Date
August 18, 2020 · about 5:10 pm local time
Place
Finelyville, Pennsylvania · Finleyville Airpark · map
Type
Accident
Injuries
No one was hurt; 2 people were on board or involved.
Weather
visual conditions (good weather)
Aircraft
Amateur-built F1 Rocket, built 2018
Registration
N88XK · registry record · serial 128
Damage
Substantial damage
Flight
Personal flight · general aviation rules (Part 91)

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

The owner of the airplane had recently purchased it, and a pilot had ferried the tailwheel-equipped, tandem seat airplane across the country and delivered it to him the day before the accident. The purpose of the accident flight was for the ferry pilot to familiarize the owner with the airplane’s avionics. For the accident flight, the owner was seated in the front seat, while the ferry pilot (who did not hold a flight instructor certificate) was seated the rear. The airplane’s rear seat was equipped with a limited set of flight controls that included a control stick, rudder pedals, and throttle. The rear seat was not equipped to control the airplane’s brakes. The pilots departed and flew to a nearby airport with a 4,000-ft-long runway, where the owner flew an approach to landing that terminated in a go-around. The ferry pilot then demonstrated a touch-and-go landing. On the third approach attempt the owner was unable to extend the airplane’s flaps, so they aborted the approach to troubleshoot the problem. The pilots were ultimately unable to extend the flaps and elected to return to the owner’s home airport and land on the 2,500-ft-long runway there. When the ferry pilot initially attempted to land the airplane, it bounced during both attempts and he aborted the landings. The owner described that during the final landing attempt, the ferry pilot approached the runway at a “slightly faster speed” and that the airplane “landed long.” The airplane continued down the runway with its tail in the air. The ferry pilot, being unable to see the runway due to his vision being obstructed by his position in the rear seat, did not realize that the airplane was approaching the end of the runway until the owner called out to him. The owner stated that he began applying the airplane’s brakes with about 400 feet of the runway remaining. The airplane subsequently overran the departure end of the runway. During the excursion both main landing gear collapsed, and the forward portion of the fuselage and engine mount area were substantially damaged. Following the accident, a Federal Aviation Administration (FAA) inspector responded to the accident site and during his examination of the wreckage he turned on the master switch and extended the airplane’s flaps. The flaps extended 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

What happened, in order

  1. Landing area overshoot during landing (landing roll) defining event
  2. Runway excursion during landing (landing roll)

The NTSB's findings

  • Aircraft › Aircraft oper/perf/capability › Performance/control parameters › Airspeed › Not attained/maintained
  • Aircraft › Aircraft oper/perf/capability › Performance/control parameters › Altitude › Not attained/maintained
  • Aircraft › Aircraft oper/perf/capability › Performance/control parameters › Landing flare › Not attained/maintained
  • Personnel issues › Action/decision › Info processing/decision › Decision making/judgment › Pilot
  • Personnel issues › Physical › Sensory ability/limitation › Visual function › Pilot
  • Aircraft › Aircraft systems › Flight control system › TE flap control system › Not used/operated
  • Aircraft › Aircraft systems › Landing gear system › Brake › Not installed/available

Pilot-Rated Passenger

  • Certificate: commercial pilot
  • Ratings: multi-engine land; instrument: airplane
  • Flight time: 639 hours in all; 9 in this make and model; 205 as pilot in command
  • Last flight review: October 15, 2019
  • Medical certificate: Class 3 (without waivers/limitations)
  • Seat: frt
  • Injury: no injuries

Pilot

  • Certificate: airline transport pilot, commercial pilot
  • Ratings: multi-engine land; single-engine land
  • Flight time: 3,420 hours in all; 11.5 in this make and model; 20.3 in the last 90 days
  • Last flight review: August 15, 2020
  • Medical certificate: Class 2 (with waivers/limitations)
  • Seat: rear
  • Injury: no injuries

The aircraft

  • Airframe total time: 60 hours
  • Last inspection: annual inspection, December 9, 2019
  • Maximum gross weight: 2,000 lb
  • Seats: 2
  • Landing gear: fixed
  • Engine: Lycoming D4A5 (piston); 60 hours total

The flight

  • Flight plan: none
  • Runway 32, 2,497 ft by 50 ft
  • A second pilot was aboard

Weather at the time

  • Light: daylight
  • Wind: from 300° at 5 knots
  • Visibility: 10 statute miles
  • Sky: broken clouds at 8,500 ft; scat at 6,000 ft
  • Temperature: 75°F (24°C), dew point 54°F (12°C)
  • Altimeter: 29.95 inHg
  • Observation at 5:10 pm from KAGC, 8 miles away

Injuries

FatalSeriousMinorNone
Flig2

About this page

Everything above comes from the NTSB's public accident database: the narrative, probable cause and findings are the NTSB's own words, and the coded tables behind its report (pilot, aircraft, flight, weather, injuries, sequence of events) are written out in plain English. Pilots' ages, home towns and medical details are left out on purpose. The docket at the NTSB holds the report as a PDF and the investigation's photographs and documents. This site never names pilots, passengers or anyone else involved. A preliminary report describes what is known soon after the event and can change; the final report, with the probable cause, usually follows one to two years later and this page is refreshed when it does. Case number ERA20CA291.