Donaldson receives STC for AW139 filter system

July 06, 2011
July 6, 2011, St. Louis, Mo. - Donaldson Aerospace & Defense has received a Supplemental Type Certificate (STC) from Transport Canada (TC) for an Inlet Barrier Filter (IBF) system for the AgustaWestland AW139 helicopter.

The IBF prevents engine damage in adverse and ramp environments alike, and is also compatible with the AW139 Full Ice Protection System (FIPS).
 
With this IBF solution, Canadian AW139 operators will experience reduced operating costs by eliminating engine damage and, at the same time, maintain operating performance equivalent to basic inlet charts.
 
The new AW139 IBF system features low profile conformal fore and aft fairings with dual filter assemblies mounted on the existing engine doors, creating a sealed intake plenum. As with all certified Donaldson IBFs, the AW139 system includes an alternate inlet air bypass system. This emergency bypass capability is an important IBF feature and is not included in most traditional sand filters and particle separators. A simple compact cockpit switch allows indication and activation of the bypass system. An integral Filter Maintenance Aid also allows for on-condition inspections, pre- and post-flight, to assist in mission planning and visual inspection of filter condition.

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