DALLAS – MARCH 5, 2017 – A year after installing its first engine filter, successful New York City tour operator Liberty Helicopters has found a better solution to engine protection: the Donaldson Inlet Barrier Filter (IBF), a proven system from Donaldson Aerospace & Defense, a division of Donaldson Company, Inc. (NYSE: DCI).
Liberty Helicopters had performed a thorough evaluation of engine protection options before electing to outfit its fleet of seven Airbus H125 helicopters with Donaldson IBFs. Six of seven Liberty H125 aircraft have been outfitted; the seventh helicopter is undergoing an engine overhaul. 
“Our experience with the Donaldson Inlet Barrier Filter – especially in terms of foreign object debris (FOD) prevention – has been great from the start,” said Brent Duca, director of Training at Liberty Helicopters. “The IBFs have already prevented a rock, a bird and other FOD from reaching and damaging critical components. Our performance experience with the Donaldson IBF has been thoroughly satisfying.”
Duca said the fleet’s H125 engines continue to perform well with the Donaldson IBF, which removes smog, other pollutants and engine exhaust from the intake air. “Other engine protection options did not address these needs,” he said.
Liberty Helicopters is one of New York City’s largest tour operators, flying more than 9,000 hours annually across the fleet while providing scenic views of the city since 1990. “Our passengers’ safety is always our primary concern, so having high passing rates on our engines during inspections and high power margins are of great comfort to everyone,” said Duca.
Donaldson dry and oiled media IBFs will be on display March 7-9 in Dallas, Texas, in exhibit 10537 at HAI HELI-EXPO 2017.
To learn more about the Donaldson Aerospace & Defense group, visit
About Donaldson Aerospace & Defense
Donaldson’s Aerospace & Defense business unit is a leading worldwide provider of filtration systems for the aerospace and defense industry. Its filtration solutions protect fixed-wing aircraft, rotorcraft, military ground vehicles, electronic equipment, space vehicles, missiles, military shipboard systems and amphibious vehicles. Donaldson, committed to advancing filtration technology and providing quality products and prompt customer service, serves customers from its many sales, engineering and manufacturing locations around the world. For more information, visit
About Donaldson Company
Founded in 1915, Donaldson (NYSE: DCI) is a global leader in the filtration industry with approximately 140 sales, manufacturing and distribution locations in 44 countries. Donaldson’s innovative filtration technologies improve people’s lives, enhance customers’ equipment performance and protect the environment. For more information, visit