NTSB CAROL · Event
Event LAX98LA042
Registry · N45SG
FAA Aircraft Registry record.
Make / Model
VAN'S AIRCRAFT RV-8
Year of manufacture
2013
Engine
MATTITUCK TMX IO-390 (210 hp)
Seats / Engines
2 seats · 1 engine
Last airworthiness date
20130409
ADS-B equipped
Yes — Mode-S A5715A
Registrant of record
GERMAIN SCOTT E
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
the flight instructor's failure to thoroughly brief his student on the performance standards of the proposed autorotation and the method to be used for a positive transfer of controls. The student's failure to verify the performance standards of the autorotation, to recognize an excessive rate of descent, and to relinquish control of the throttle to the instructor were factors in this accident.
Factual narrative
On November 22, 1997, at 0936 hours Pacific standard time, a Robinson R22 Beta, N45SG, rolled over during a practice autorotation at Daugherty Field, Long Beach, California. The aircraft was being operated by Watson Helicopters, Inc., as an instructional flight at the time of the accident. The helicopter sustained substantial damage; however, neither the flight instructor nor his private pilot rated student was injured. The flight originated from Whiteman Airport in Los Angeles, California, at 0830 on the morning of the accident. Visual meteorological conditions prevailed at the time and no flight plan was filed. The student reported that he was practicing autorotations to pad 1. On the previous maneuvers, he had been instructed to execute a "nice easy flare." During this maneuver, however, he was instructed to complete a "nice hefty flare." As a result of this direction from the flight instructor, he thought that they were going to execute a full touchdown autorotation but did not attempt to confirm his assumption. As he leveled the aircraft, the instructor reached for the controls that further strengthened the student's belief that they were now performing a full touchdown autorotation. He held the throttle at idle and pulled pitch to cushion the touchdown but the aircraft drifted left and fell through to the ground. The instructor reported that the student was in the process of completing his fourth straight-in autorotation to pad 1. This autorotation was to terminate with a power recovery in the same manner as the previous three maneuvers. During the flare, however, the student allowed the aircraft to descend lower than he had previously. At this point, the instructor orally reminded him of the importance of a more aggressive flare. The student accentuated his flare, also reducing his air and ground speed. As he leveled the aircraft, an excessive sink rate rapidly developed. The instructor attempted to reapply the throttle but his efforts were delayed by the student's tight grip on the controls. The aircraft was drifting left when the left skid contacted the ground. The aircraft bounced and then rolled onto its left side, coming to rest in the grass abeam of pad 1. Both occupants exited the aircraft without difficulty. During the autorotation, the student allowed the aircraft to descend lower than he had previously and was instructed to increase his flare. The student said he believed this now meant that they would be executing a full touchdown autorotation; however, he did not confirm this with the instructor. As he leveled the aircraft a sink rate developed. The instructor reached for the controls to reapply throttle but did not announce his intention. The student held the throttle at idle and pulled pitch delaying the instructor's efforts with his tight grip on the controls. The aircraft fell though, landing hard on the left skid. The aircraft bounced and rolled onto its left side. The instructor had not briefed the student on the performance standards before executing the maneuver, nor had he announced the method to be used for a positive transfer of controls. The student did not verify the instructor's performance standards, recognize the excessive rate of descent, or relinquish control of the throttle. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1997_LAX98LA042.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 (icing). 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 · Contractor Report (CR)
Icing Physics Studies Using the 3D SIDRM Test Article: 2023 Icing Tests Analysis
In-flight icing is an important safety issue and is a factor that affects aircraft design and performance. Newer regulations are driving a need for improvements in airframe and engine icing simulation…
- arXiv 2025 · arXiv preprint
Multi-Agent Deep Reinforcement Learning for UAV-Assisted 5G Network Slicing: A Comparative Study of MAPPO, MADDPG, and MADQN
The growing demand for robust, scalable wireless networks in the 5G-and-beyond era has led to the deployment of Unmanned Aerial Vehicles (UAVs) as mobile base stations to enhance coverage in dense urb…
- Embry-Riddle Scholarly Commons 2025 · Journal article (JAAER)
A Mathematical Model on the Temporal Dynamics of Aviation Competitive Pricing
This study investigates the competitive dynamics of airport pricing using U.S. airport data to validate the findings. It employs linear and nonlinear ordinary differential equation models to analyze t…
- NASA NTRS 2025 · Presentation
NASA Icing Update – March 2025
This NASA Icing Update was prepared for presentation to the SAE International AC-9C Inflight Icing Technology Committee. This update includes the following topics: planned Rotational Icing Scaling tes…
- arXiv 2024 · arXiv preprint
An energy-stable phase-field model for droplet icing simulations
A phase-field model for three-phase flows is established by combining the Navier-Stokes (NS) and the energy equations, with the Allen-Cahn (AC) and Cahn-Hilliard (CH) equations and is demonstrated ana…
- NASA NTRS 2024 · Presentation
NASA Icing Update – Oct 2024
This presentation provides a status update on select NASA icing research activities for the SAE AC-9C Icing Technical Committee Meeting on Oct 21, 2024.
Browse the full corpus — academia portal ↗