NYC00LA026
1999-11-06 · POTTSTOWN, Pennsylvania, United States · Minor · 1 aircraft · Status: Completed
Airport PTW
Aircraft involved
Probable cause & findings
The student pilot's loss of control of the helicopter, his lack of recent experience, his lack of total experience, and his overconfidence in his personal ability. A factor in the accident was the student pilot's disregard of regulations.
Factual narrative
On November 6, 1999, at 1140 Eastern Standard Time, a homebuilt Exec 162F, N14JJ, was substantially damaged while attempting to hover at Pottstown Limerick Airport (PTW), Pottstown, Pennsylvania. The student pilot and his passenger received minor injuries. Visual meteorological conditions prevailed at the time of the accident. No flight plan was filed for the personal flight, which was conducted under 14 CFR Part 91. According to a Federal Aviation Administration (FAA) Inspector, the student pilot stated that he was conducting an air taxi, with his son onboard. He taxied about 1/4 mile, then turned the helicopter around to return to the point of departure. The helicopter hovered briefly in position, then was hit with a gust of wind. The helicopter "oscillated," and one of the rotor blades struck the ground. A witness stated that he saw the helicopter as it began rocking, "like a boat in rough water." Then, it "suddenly crashed, throwing debris into the air." The helicopter did not have an airworthiness certificate, and the student pilot had not obtained operating limitations for it. The student pilot did not respond to requests for information, as required to be provided to the Safety Board by 49 CFR Part 830. At the time of the accident, it was estimated that the student pilot had about 11 hours of total flight time. The student pilot's last known flight was on February 19, 1999. On that date, he received an instructor's endorsement for solo flight, which was valid for 90 days. The endorsement stated, in part, that the student pilot was competent for solo hover in winds not greater than 5 mph. Weather, recorded at the airport 14 minutes after the accident, included winds from 270 degrees true, at 12, gusting to 17 knots. According to 14 CFR Part 61, paragraph 61.89(a): "A student pilot may not act as pilot in command of an aircraft...that is carrying a passenger." The student pilot was conducting an air taxi in his homebuilt helicopter, with his son onboard. He taxied about 1/4 mile, then turned the helicopter around to return to the point of departure. The helicopter hovered briefly in position, then 'oscillated,' and one of the rotor blades struck the ground. The helicopter did not have an airworthiness certificate, and the student pilot had not obtained operating limitations for it. At the time of the accident, the student pilot had about 11 hours of total flight time. The student pilot's last known flight had been over 8 months before the accident, and upon its completion, he received an instructor's endorsement to solo, valid for 90 days. The endorsement stated, in part, that the student pilot was competent for solo hover in winds no greater than 5 mph. Weather, recorded at the accident site 14 minutes after the accident, included winds at 12, gusting to 17 knots. According to 14 CFR Part 61, paragraph 61.89(a): 'A student pilot may not act as pilot in command of an aircraft...that is carrying a passenger.' Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1999_NYC00LA026.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
Search this event elsewhere
External sources are reported, not agency: signal that something happened, not fact about what happened.
- TallyAero Live Wire Aviation press
- NTSB CAROL Agency ↗
- NTSB Docket Agency ↗
- Aviation Safety Network Aviation press ↗
- Kathryn's Report Aviation press ↗
- Aviation Herald Aviation press ↗
- AVweb Aviation press ↗
- Pilots of America Community ↗
- Reddit /r/flying Community ↗
- FlightAware Aviation press ↗
- AOPA accident database Aviation press ↗
- Google News News ↗
- DuckDuckGo News ↗
Related research
Matched on aircraft type or causal vocabulary (loss of control). All research papers
- Embry-Riddle Scholarly Commons 2025 · Journal article (JAAER) A Scoping Review of Aviation Loss of Control Inflight Research
Loss of control – inflight (LOC-I) contributes to aircraft accidents at unacceptably high rates. Significant industry efforts and research have aimed to improve LOC-I prevention, detection, and recove…
- SKYbrary (Eurocontrol) 2024 · SKYbrary article Loss of Control In-Flight (LOC-I) — SKYbrary Knowledge Base
SKYbrary comprehensive knowledge-base entry on Loss of Control In-Flight — definitions, contributing factors, accident case studies (Air France 447, Colgan 3407), and prevention strategies.
- Semantic Scholar 2024 · Article (International Conference on Networking and Services) Risk Assessment of Loss of Control In-Flight Trajectories for Urban Air Mobility Safety
In Urban Air Mobility (UAM), maintaining a minimum separation between aircraft is a safety requirement, which becomes challenging amidst congested air traffic and off-nominal conditions, such as Loss …
- NTSB Aircraft Accident Reports 2022 · Accident report Loss of Control on Takeoff in Icing Conditions — Citation 560XL
Cessna Citation 560XL fatal takeoff icing accident, March 2018. Investigation of a Citation 560XL loss-of-control takeoff accident in icing conditions.
- Semantic Scholar 2021 · Article (Aviation) ANALYSIS OF GENERAL AVIATION FIXED-WING AIRCRAFT ACCIDENTS INVOLVING INFLIGHT LOSS OF CONTROL USING A STATE-BASED APPROACH
Inflight loss of control (LOC-I) is a significant cause of General Aviation (GA) fixed-wing aircraft accidents. The United States National Transportation Safety Board’s database provides a rich source…
- NASA NTRS 2021 · Presentation Use of Design of Experiments in Determining Neural Network Architectures for Loss of Control Detection
Abstract—We describe empirical methods for selecting a neural network architecture to implement belief state inference on generic commercial transport aircraft.