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Accidents · NTSB ERA15FA348 · Final report

Aerofab INC. Lake LA-4-250 accident near Somerset, New Jersey, September 9, 2015

On September 9, 2015, a 1984 Aerofab INC. Lake LA-4-250, registered N1401P, was destroyed in an accident during initial climb near Somerset, New Jersey (Somerset Airport). It was a personal flight under general aviation rules (Part 91). 1 person was killed. The weather was visual conditions (good weather).

The NTSB's probable cause their words, unchanged

The pilot's attempted 180-degree return to the runway immediately after takeoff in dark night conditions, which resulted in collision with trees and terrain. Also causal was the pilot's inadequate preflight inspection, which resulted in a takeoff with little-to-no fuel on board the airplane.

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

What the record shows

Date
September 9, 2015
Place
Somerset, New Jersey · Somerset Airport · map
Type
Accident
Injuries
1 person was killed.
Weather
visual conditions (good weather)
Aircraft
Aerofab INC. Lake LA-4-250, built 1984
Registration
N1401P · no longer on the register · serial 12
Damage
Destroyed
Flight
Personal flight · general aviation rules (Part 91)

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

The pilot departed in dark night conditions without performing a preflight inspection and with an unknown quantity of fuel on board. Surveillance video captured the takeoff, and, about 30 seconds later, a bright light travelled the opposite direction, and descended approximately parallel to the runway into the wooded area of the accident site. There was no fuel, no odor of fuel, and no evidence of fuel spillage at the scene. Examination of the wreckage revealed no mechanical anomalies that would have prevented normal operation, and propeller signatures and angularly-cut wood at the accident site suggested the engine was producing power when it entered the trees. The engine was later placed in a test cell, where it started immediately, accelerated smoothly, and ran continuously without interruption at all power settings. The pilot's most recent logbook entry was for a round trip, 7.45-hour flight 3 weeks before the accident flight. Fuel receipts, performance data, and a partial radar track suggested a 3-hour flight away from his home base where he purchased 45 gallons of fuel to replace the fuel consumed. The return flight was about 4.4 hours in duration, but the pilot's route of flight and the number of takeoffs and landings performed en route could not be determined. Further, the fuel totals found programmed in the digital fuel flow indicator did not correlate to the actual usage of the airplane but rather to a partial fuel-load setting at an interim point of the flight, which could not be explained. The video evidence indicates that the pilot did not complete a preflight inspection before the accident flight. Thus, it is likely that he discovered the airplane's low fuel state at takeoff and performed a turn back to the airport immediately. It is likely that the airplane lost power on takeoff or in the turn, then engine power was restored when the wings were leveled; however, this scenario could not be definitively determined. Further, the pilot was not instrument-rated, and a rapid, steep turn at low altitude in dark night conditions with little or no visual reference greatly reduced the likelihood of a safe return to the runway.

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. Miscellaneous/other during prior to flight
  2. Abrupt maneuver during initial climb defining event

The NTSB's findings

  • cause Aircraft › Aircraft oper/perf/capability › Performance/control parameters › Descent rate › Attain/maintain not possible
  • cause Personnel issues › Task performance › Use of equip/info › Aircraft control › Pilot
  • cause Environmental issues › Conditions/weather/phenomena › Light condition › Dark › Effect on personnel
  • cause Personnel issues › Action/decision › Info processing/decision › Decision making/judgment › Pilot
  • cause Personnel issues › Task performance › Planning/preparation › Fuel planning › Pilot
  • cause Aircraft › Fluids/misc hardware › Fluids › Fuel › Fluid level
  • Environmental issues › Physical environment › Object/animal/substance › Tree(s) › Contributed to outcome

Pilot

  • Certificate: private
  • Ratings: single-engine land; single-engine sea
  • Flight time: 900 hours in all; 625 in this make and model
  • Last flight review: November 7, 2014
  • Medical certificate: Class 3 (waiver time limited special)
  • Seat: left
  • Injury: fatal

The aircraft

  • Airframe total time: 1,633 hours
  • Last inspection: annual inspection, April 27, 2015; 21 hours since
  • Maximum gross weight: 3,140 lb
  • Seats: 4
  • Landing gear: fixed
  • Engine: Lycoming IO-540-C4B5 (piston); 1,633 hours total

The flight

  • Departed from: SMQ Somerset NJ
  • Destination: SMQ Somerset NJ
  • Flight plan: none
  • Runway 30, 2,739 ft by 65 ft

Weather at the time

  • Light: night
  • Visibility: 10 statute miles
  • Sky: clear
  • Temperature: 73°F (23°C), dew point 64°F (18°C)
  • Altimeter: 29.95 inHg

Injuries

FatalSeriousMinorNone
Flight 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.

Other NTSB records under N1401P the same tail number, which may have belonged to a different aircraft at the time

1998-07-04ATL98LA100 · accident near Wise, NC · substantial damage · no injuries

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.