Quiet Technology Aerospace (QTA, Booth 2521) has developed a permanent solution to the ongoing problem of thrust reverser corrosion on super-midsize jets powered by the Honeywell HTF7000. That includes the Bombardier Challenger 300/350; Gulfstream G280; Embraer Legacy 450/500 and Praetor 500/600; and Cessna Citation Longitude.

“There is a significant and recurring corrosion problem with thrust reverser (TR) doors and aft body assemblies on these engines,” QTA executive vice-president of engineering and customer support Martin Gardner told AIN. QTA’s new corrosion solution “is the market’s only permanent way to eliminate the ongoing problem,” he said. “It is not a repair.” 

At NBAA-BACE this week, QTA is displaying a prototype of its HTF7000 thrust reverser corrosion solution nearly identical to the forthcoming, certified version, expected in the first quarter of 2022. Company representatives are on hand to discuss program details and costs.

QTA remanufactures the original doors—one-piece forgings made with 7075 aluminum—replacing the aluminum in the corroded areas with titanium. Aft body side beams, also prone to corrosion, are protected by a new titanium cap. All work is performed in-house at QTA’s Hollywood, Florida facility, and the solution comes with a lifetime warranty.

Currently, operators’ only remedy for ongoing corrosion that has progressed beyond economic repair is to replace the thust reverser door and aft body assembly with factory new sets, at “a tremendous cost,” according to QTA.

Concluded CEO Barry Fine, “QTA has been engineering as hard and as smart as ever to bring this TR corrosion solution to market. It’s just fantastic to be back at NBAA after this long hiatus.”

QTA is also displaying in Las Vegas its carbon-fiber engine inlet barrels, which “eliminates a significant problem of engine inlet corrosion,” Gardner said. The inlet barrels, with almost 300 in service, are approved for the Bombardier Challenger 300/350 and Learjet 60/60XR; Dassault Falcon 2000EX/LX; Gulfstream G200, G280, and G450; and Embraer Legacy 450/500 and Praetor 500/600.