NTSB CAROL · Event
Event FTW02LA186
Aircraft involved
Probable cause & findings
the pilot's inability to control the helicopter in a hover due to the restricted movement of the cyclic for undetermined reasons.
Factual narrative
On June 23, 2002, at 1130 central daylight time, a Bell 47G4 helicopter, N62446, was destroyed when it impacted terrain following a loss of control while hovering near Grand Lake, Louisiana. The helicopter was registered to and operated by Deep South Helicopters, Inc., Jennings, Louisiana. The commercial pilot and one passenger received minor injuries, and one passenger was not injured. Visual meteorological conditions prevailed for the 14 Code of Federal Regulations Part 91 observation flight, which was originating from an open field at the time of the accident, and no flight plan was filed. According to the Pilot/Operator Aircraft Accident Report (NTSB Form 6120.1/2), and in a telephone interview with the NTSB investigator-in-charge, the pilot reported that he had just finished spray operations. The pilot then repositioned the helicopter to an open field prior to picking up two passengers he would take to survey the area he had just sprayed for them. The pilot occupied the left seat, one passenger occupied the center seat, and the remaining passenger occupied the right seat. As the helicopter was equipped with dual controls, the pilot cautioned both passengers "not to touch anything." The pilot reported that as he brought the helicopter to a hover, approximately 6 to 12 inches off the ground, the helicopter tilted forward "due to the forward center of gravity condition." The pilot added aft cyclic to counter the forward center of gravity condition; however, the helicopter continued to tilt forward. The pilot stated that "as I tried to add more aft cyclic, I felt the cyclic bind up and couldn't move it aft any further." He then lowered collective in an attempt to land, but the helicopter "tilted to the right." The right skid "dug" into the ground, and the helicopter experienced a dynamic rollover, coming to rest on its right side where it caught fire and was destroyed. An FAA inspector, who traveled to the accident site, reported that control continuity could not be established due to the helicopter being destroyed by thermal and impact damage. The pilot had just finished spray operations prior to taking two passengers to look over a marsh area he had just sprayed for them. As the helicopter was equipped with dual controls, the pilot cautioned the passengers not to touch anything. When the pilot brought the helicopter to a hover, approximately 6 to 12 inches off the ground, the helicopter tilted forward. The pilot added aft cyclic, but the helicopter continued to tilt forward. He attempted to add more aft cyclic, but felt the cyclic bind up and could not move it aft any further. The pilot lowered the collective in an attempt to land, but the helicopter tilted to the right. The right skid dug into the ground, and the helicopter experienced a dynamic rollover, coming to rest on its right side where it caught fire and was destroyed. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_2002_FTW02LA186.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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Related research
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Academic papers and agency reports matching this event's aircraft type or causal vocabulary (loss of control). 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 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.
- 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.
- NASA NTRS 2021 · Conference Paper
Use of Design of Experiments in Determining Neural Network Architectures for Loss of Control Detection
We describe empirical methods for selecting a neural network architecture to implement belief state inference on generic commercial transport aircraft.
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