Maintenance and Modifications
QTA Develops Repair for HTF7000 TR Door Corrosion
The QTA HTF7000 repair, which involves reinforcing the thrust reverser doors with graphite doublers, received both FAA and EASA approvals.

Quiet Technology Aerospace (QTA) has obtained FAA and EASA approvals for a lower-cost repair for recurring corrosion issues involving Honeywell HTF7000 engine thrust reverser (TR) doors. Applicable to the Bombardier Challenger 300/350, Gulfstream G280, Embraer Legacy 450/500 and Praetor 500/600, and Cessna Citation Longitude, the repair is approved for use even if the TR doors are deemed beyond economical repair, QTA said.