Honeywell HTS900. Photo courtesy of Honeywell
Honeywell is discussing with the U.S. Forest Service approval of higher contract rates covering firefighting work with the HTS900-powered Eagle Copters 407HP, the engine maker told R&WI.
Calgary, Alberta-based Eagle Copters upgraded its Bell Helicopter 407 by replacing its Rolls-Royce M250-C47 with the 1,025-shp's HTS900 to boost the aircraft's performance at high altitudes and in hot conditions. In addition to its 22% power, Honeywell said, the upgrade (which is backed by Bell) gives the 407 19% greater payload, lower engine direct maintenance costs, lower fuel burn and the benefits of a dual-channel, full-authority digital engine control (FADEC) system.
Photo courtesy of Eagle Copters
Eagle Copters last June received an FAA supplement type certificate for installation on the 407HP of an inlet barrier filter, which is required for firefighting work.
“We’re engaged with the U.S. Forest Service now, trying to get a rate in place for the 407HP that reflects its added lift performance,” Honeywell Helicopter Engines Product Line Director Doug Kult told us.
Separately, he said the on-condition-maintenance HTS900’s total time in service is approaching 3,000 hours. While none of the engines yet has hit the 2,400-hour mark for a hot-section inspection, Kult said, one underwent a 600-hour inspection in November. “We did a borescope on the whole thing. It looked untouched.”