Engines
Tackling Thrust-reverser Corrosion—Once and For All
QTA has developed corrosion-resistant thrust-reverser doors for the HTF7000
QTA titanium-based thrust-reverser doors
QTA’s titanium-based thrust-reverser doors are a precise-fit replacement for the aluminum originals, but have a lifetime corrosion-resistance guarantee. (Photo: Quiet Technology Aerospace)

Quiet Technology Aerospace (QTA) has designed an upgrade of the thrust-reverser (TR) doors for the Honeywell HTF7000 engine, which powers a number of popular business jet types. The doors answer a recurrent issue with corrosion, which can be costly to put right, and follows on from a successful program to develop a carbon graphite inner inlet barrel, of which over 400 have now been delivered.

The company received an FAA supplemental type certificate (STC) for the doors in May and received approval from Europe’s EASA in September. DGAC (France), ANAC (Brazil), and Transport Canada clearance is expected soon, along with other nations that acknowledge FAA/EASA approval. The approved model list (AML) covers the Bombardier Challenger 300/350/3500, Embraer Legacy 450/500 and Praetor 500/600, and Gulfstream G280. The Cessna Longitude is due to be added early next year.