NTSB CAROL · Event
Event IAD99LA046
Registry · N2DF
FAA Aircraft Registry record.
Make / Model
GULFSTREAM AEROSPACE GIV-X
Engine
ROLLS-ROYC TAY 611-8C
Seats / Engines
22 seats · 2 engines
Last airworthiness date
20070831
ADS-B equipped
Yes — Mode-S A18DA2
Registrant of record
SUBURBAN PROPERTIES 3 LLC
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
Was the pilot's failure to maintain directional control.
Factual narrative
On May 30, 1999, about 0949 eastern daylight time, a homebuilt Revelation, N2DF, was destroyed after colliding with terrain during initial climb out from Westmoreland County airport (LBE), Latrobe, Pennsylvania. The certificated private pilot/owner/builder was fatally injured. Visual meteorological conditions and calm winds prevailed. No flight plan was filed for the personal flight conducted under 14 CFR Part 91. A witness, an Air Traffic Controller at LBE, observed the aircraft operating the day before the accident and was in the control tower the day of the accident. In a written statement, he said: "The aircraft requested to taxi to a runway for some high speed taxi runs. He was given permission and taxied up and down runway 3/21 for approximately 10 to 15 minutes. Then he requested take-off clearance on runway 21. He was cleared for take-off. I observed the aircraft from the start of take-off roll. This was supposed to be the first flight for this aircraft except for the day before (5/29/99), when he did the same maneuvers on runway 23. On 5/29/99, he barely got airborne and had to land right away. The pilot mentioned something to the tower about engine problems and taxied back to parking. On 5/30/99, after the aircraft became airborne and got about two thirds of the way down runway 21, it wobbled a few times and banked to the left and crashed into the hillside." Federal Aviation Administration (FAA) Inspectors examined the wreckage on May 30, 1999. The examination revealed that all components of the airplane were located at the impact site, a grass covered hill. An FAA Inspector reported that from ground scaring found at the site, the airplane appeared to impact the terrain on the left wing and nose section of the fuselage. The airplane, a pusher with the engine mounted behind the open cockpit, was resting in an inverted attitude, with all flight controls intact and the propeller tips bent. All switches were found in the "on" position, with the airspeed indicator indicating 86 MPH and the RPM indicator at 2,200 RPM. A two lane road paralleled the accident site. The airplane was equipped with a 2-cycle engine. According to a representative of the engine manufacturer, the pilot contacted him on May 26, 1999, asking for help in adjusting his engine. In a written statement, the representative explained his association with the pilot: "I had not heard from the pilot until May 26, 1999, when he called me to ask for help in adjusting the carburetors on the 2Si engine he purchased from the 2Si factory. He indicated that he got a good price on a factory overhauled engine. He indicated that he had not flown his aircraft yet, but was planning to do so soon. He asked if it was OK to bring his aircraft down to my private airstrip to make engine adjustments. I asked if he would trailer the aircraft down, and he indicated that he would fly it. I said that was not a good idea since he was having carburetor problems. The carburetor problems he described as running excessively rich, with fuel dripping from the air filters. I described a similar problem that I had with my 2Si engine and what actions I took to correct it. Next I heard that the pilot suffered a fatal accident in his amateur built aircraft at the Latrobe Airport on May 30, 1999." An FAA Inspector issued the pilot a Repairman Certificate for Experimental Aircraft Builder limited to the Revelation, along with a Special Airworthiness Certificate, on May 18, 1999. The pilot installed the engine on April 14, 1999. According to the pilot's logbook, he had accrued a total of 141 hours flight hours at the time of the accident, with no log entries for flights in the Revelation or any other experimental aircraft. Examination of the engine and related components revealed no pre-impact deficiencies. An autopsy and toxicology examination was performed by the Westmoreland County Coroner's Office, Pennsylvania, on May 31, 1999. A toxicology exam was also performed by the FAA's toxicology laboratory in Oklahoma City, Oklahoma. The pilot attempted to make his first flight in his homebuilt airplane. The airplane lifted off the runway, and immediately landed back on the runway. He reported engine problems to the tower and taxied back to parking. The next day, the pilot made his second attempt at his first flight. He lifted off the runway, the aircraft wobbled, banked left, and collided into a hillside. Examination of the airframe and engine revealed no pre-impact mechanical deficiencies. The pilot's logbook indicated a total of 141 flight hours, with no entries of flight in the experimental airplane. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1999_IAD99LA046.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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Related research
What the literature says.
Academic papers and agency reports matching this event's aircraft type or causal vocabulary (stall). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
- NASA NTRS 2026 · Conference Paper
Computational Analysis of Steady State Aerodynamics of Transonic Truss-Braced Wing Configuration in Deep Stall
This study presents a computational investigation of steady state aerodynamics of the Subsonic Ultra-Green Aircraft Research (SUGAR) Transonic Truss-Braced Wing (TTBW) configuration over a wide range …
- arXiv 2023 · arXiv preprint
Automating Bird Diverter Installation through Multi-Aerial Robots and Signal Temporal Logic Specifications
This paper tackles the task assignment and trajectory generation problem for bird diverter installation using a fleet of multi-rotors.
- arXiv 2023 · arXiv preprint
Variation of Critical Crystallization Pressure for the Formation of Square Ice in Graphene Nanocapillaries
Two-dimensional square ice in graphene nanocapillaries at room temperature is a fascinating phenomenon and has been confirmed experimentally.
- arXiv 2023 · arXiv preprint
Polycrystallinity enhances stress build-up around ice
Damage caused by freezing wet, porous materials is a widespread problem, but is hard to predict or control. Here, we show that polycrystallinity makes a great difference to the stress build-up process…
- arXiv 2022 · arXiv preprint
Enhanced Prediction of Three-dimensional Finite Iced Wing Separated Flow Near Stall
Icing on three-dimensional wings causes severe flow separation near stall. Standard improved delayed detached eddy simulation (IDDES) is unable to correctly predict the separating reattaching flow due…
- Embry-Riddle Scholarly Commons 2021 · Journal article (JAAER)
Analysis on the Negative Emotional, Physiological, and Cognitive Responses Elicited from of the Activation of a Stall Alarm
Failing to identify an aerodynamic stall can lead to the inability of an aircraft to sustain flight. To warn pilots of an impending or fully-developed stall, many aircraft have safety devices installe…
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