TORONTO - Aero Asset's Q3 2021 Heli Market Trends reports a decrease in supply of preowned twin-engine helicopters and stable retail transaction volume year over year.For the first time, Heli Market Trends publishes worldwide flight data, tracking helicopters equipped with ADS-B transponders. The report also publishes market data of twin-engine preowned helicopter models in products and variants with recent preowned sales activity, including all configurations (VIP, EMS, OGP, etc.)."Year to date retail sales were stable compared to the same period in 2020," said Aero Asset Vice President of Market Research Valerie Pereira. "In the last quarter, many aircraft for sale were removed from the market and returned to service, translating into a 24% reduction of supply for sale year over year, to 196 units at the end of Q3."So far in 2021, 98 preowned twin-engine helicopters were sold to retail buyers on and off market, totaling $263 million. This dollar sales volume was down 26% year over year, mainly because of a significant decrease in heavy retail sales activity over same period.VIP configured twin helicopter sales volume rose 8% and was the best performing market segment year to date. North America was the best performing region year to date, accounting for a third of all retail transactions.The best performing twin-engine helicopter market year to date is the Airbus EC/H145, followed by the Leonardo AW109S/SP and the Sikorsky S76C+/C++.The number of deals pending at various stages of transaction declined 24% Q3 versus Q2 2021. However, the number of deals pending Q3 remained 23% higher compared to the third quarter of 2020.Year to date light twin-engine retail sales volume increased 5% versus the same period in 2020, while medium twin retail sales were up 43%. Heavy retail sales declined substantially over the same period.The number of worldwide helicopter flights experienced a sharp rebound Q1 2021 and year to date. North America saw 256,126 helicopter flights Q3 2021, a 36% increase year over year. Europe saw 192,976 helicopter flights Q3, a 23% increase year over year. South America saw the biggest increase in helicopter flights Q3 2021 reaching 22,048 flights, a 155% increase year over year.