Butler Avionics has received EASA supplemental type certificate (STC) approval for a Garmin Class A terrain awareness and warning system (TAWS) for the Learjet 35/35A and 36/36A. The upgrade is also FAA-approved and available from Butler Avionics or other qualified avionics dealers.
The Class A TAWS installed with Garmin’s GTN 750/750Xi navigator “features three principal alerting functions,” according to Butler Avionics. These include forward-looking terrain-avoidance (enabling reduced required terrain clearance and imminent terrain impact), premature descent alert function, and basic ground proximity warning system functions.
“The Garmin TAWS-A works seamlessly with the GTN navigators, and the TAWS-A upgrade is a cost-effective solution that is ideal for Learjets,” said Patrick Hupp, avionics manager for Butler Avionics. “We are receiving many inquiries about the TAWS-A, and we are extremely pleased to offer Learjet operators worldwide a quality alternative with both EASA and FAA STC approval. We are continuing to focus on global solutions to satisfy regulatory requirements.”