NTSB CAROL · Event
Event NYC99LA134
Registry · N555L
FAA Aircraft Registry record.
Make / Model
PIPER PA-34-200T
Engine
CONT MOTOR TSIO-360 SER (225 hp)
Seats / Engines
7 seats · 2 engines
Last airworthiness date
19790919
ADS-B equipped
Yes — Mode-S A712F8
Registrant of record
FRANKLAND ROBERT
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The separation of the airplane canopy for undetermined reasons, the diminished controllability of the airplane, and the pilot's failure to maintain airspeed resulting in a stall/mush into trees short of the runway.
Factual narrative
On June 2, 1999, at 0937 Eastern Daylight Time, a homebuilt Long EZ, N555L, was destroyed during an emergency approach to Potomac Airfield (VKX), Friendly, Maryland. The certificated private pilot was fatally injured. Visual meteorological conditions prevailed at the time of the accident. No flight plan was filed for the flight, between Washington Executive/Hyde Field (W32), Clinton, Maryland, and Middle Georgia Regional Airport (MCN), Macon, Georgia. The personal flight was conducted under 14 CFR Part 91. According to witnesses, the airplane departed Clinton about 0830, and was later seen north of Potomac Airfield, flying low. Another pilot in the traffic pattern at Potomac saw the accident airplane, and requested the pilot's intentions. There was no response, but the accident airplane appeared to enter a right base for Runway 24. The airplane overshot the runway, then turned back, and entered a left base for the same runway. It overshot the final approach course, but corrected with a steep turn, and "continued making 'S' turns down final approach. [It] started getting very close to the trees; I could see [the] shadow almost touch the plane." The airplane then "pitched up...and mushed down into trees about 200 yards short of 24. It appeared the prop was windmilling a few seconds before [the airplane] hit the trees." According to a Federal Aviation Administration (FAA) Inspector, cut trees were found leading to the wreckage, one blade of the wooden propeller was fractured while the other had split a small tree trunk, and fuel was found onboard the airplane. The airplane's canopy was found about 2 miles away, in the Potomac River. The inspector further stated: "There were no visible marks or concerns pertinent to the canopy or latching mechanism.... The latching mechanism operated normally - the safety latch appeared functional. The screw holes on [the] canopy hinges were enlarged due to screws that were pulled through holes when canopy separated from aircraft." Another Long EZ owner informed the Inspector that the latching mechanism consisted of three latches with a safety lock. He also noted that a Long EZ would be difficult to control without a canopy. Maintenance information about the airplane was not recovered. Winds, reported at an airport 6 nautical miles to the northeast, 14 minutes after the accident, were from 200 degrees magnetic, at 11 knots. Another pilot in the airport traffic pattern saw the accident airplane, and requested the accident pilot's intentions. There was no response, but the accident airplane appeared to enter a right base for the active runway. The airplane overshot the runway, then turned back, and entered a left base for the same runway. It overshot the final approach course, but corrected with a steep turn, and continued making 'S' turns during the final approach. The airplane then pitched up and mushed into trees about 200 yards short of the runway. The airplane's canopy was found about 2 miles from the accident scene, and the latching mechanism exhibited no sign of overstress, or of being latched. Another owner of a Long EZ stated that the airplane would have been difficult to control without a canopy. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1999_NYC99LA134.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, maintenance). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
- Embry-Riddle Scholarly Commons 2023 · Conference paper
The Value of Strong Partnerships to Build a Successful Aviation Maintenance Career Pathway Program for Transitioning Military Service Members
The aerospace industry is competing with other industries for a qualified workforce, and many of those competing industries are investing heavily in creating workforce development pipelines.
- Embry-Riddle Scholarly Commons 2026 · Journal article (IJAAA)
From Reactive to Predictive: A hybrid Trust-Mediated Adoption Framework for Data-Driven Maintenance in Distributed-Authority Aviation Environments
Modern aviation maintenance operates within increasingly data-intensive technological environments, yet the operational integration of predictive maintenance into routine decision-making remains incon…
- 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 …
- Semantic Scholar 2025 · Article (Applied Sciences)
Decision-Making Framework for Aviation Safety in Predictive Maintenance Strategies
The implementation of predictive maintenance (PM) in aviation presents unique challenges due to strict safety requirements, complex operational environments, and regulatory constraints.
- Embry-Riddle Scholarly Commons 2024 · Journal article (JAAER)
Low-Resource Automatic Speech Recognition Domain Adaptation – A Case-Study in Aviation Maintenance
With timeliness and efficiency being critical in the aviation maintenance industry, the need has been growing for smart technological solutions that optimize and streamline the different underlying ta…
- Embry-Riddle Scholarly Commons 2024 · Journal article (JAAER)
A New Trajectory in UAV Safety: Leveraging Reinforcement Learning for Distance Maintenance Under Wind Variations
In the field of aviation, safety is a critical cornerstone, and the operation of Unmanned Aerial Vehicle (UAV) systems is deeply connected with this principle.
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