Story ID: 
Quiet Technology Delivers 500th Inlet Cowl Upgrade
By: Chad Trautvetter
Caption: Carbon-fiber barrels for HTF7000- and PW300-series engines eliminate corrosion issues
Word Count: 266
Quiet Technology Aerospace (QTA) this week delivered its 500th inlet cowl upgrade incorporating a carbon-fiber replacement inner barrel to a U.S.-based business jet fleet operator. The milestone inlet will be installed on a Honeywell HTF7350 engine on a Bombardier Challenger 350, QTA told AIN.
The company’s inlet upgrade replaces the aluminum-based inner barrel with a lighter-weight carbon-graphite composite barrel that will not corrode. Barrel corrosion and acoustic-screen degradation are known issues with the aluminum barrels on HTF7000-series engines that power various super-midsize business jets. QTA also has a similar STC’d upgrade for Pratt & Whitney Canada PW300-series engines on the Hawker 1000, Learjet 60/60XR, and Dassault Falcon 2000EX/LX, as well as Rolls-Royce Tay Mk 611-8C turbofans on the Gulfstream G450.
Meanwhile, the company also received an FAA approved model list STC for its CP 70 titanium skins for thrust reverser doors and aft body side beam assemblies for aircraft powered by HTF7000-series engines, namely the Challenger 300/350/3500, Gulfstream G280, Cessna Citation Longitude, and Embraer Legacy 450/500 and Praetor 500/600. The titanium skins cover the complete aft section of the inner surface where the jet exhaust impinges and corrosion can occur. QTA said it completed its 35th thrust reverser upgrade this month.
“The delivery of our 500th inlet upgrade, and the escalating requests of HTF7000 thrust reverser upgrades, is a testament to our innovative root cause approach to solving corrosion problems for operators,” said company CEO Barry Fine. “This means QTA now has the permanent and terminating corrosion fix for more than 3,000 aircraft around the world.”