Sandel Avionics and S-TEC Announce Successful Pairing of Flight Displays and Autopilots

Sandel_SA4550_and_SN4500 Sandel Avionics and S-TEC have announced the successful testing of Sandel’s SA4550 Primary Attitude Display with S-TEC’s System 55, 55X, 60-2 and 65 autopilots. S-TEC will list the SA4550 as an approved flight director for use with these autopilots.

“This opens the door for numerous aircraft owners, especially in the turboprop market, who would like an affordable upgrade for their flight directors and autopilots ,” said Jerry Henry, Sandel’s Director of Sales. “Our Product Support team worked with S-TEC to verify that our products are compatible and we are pleased that a combined solution is now available for our mutual customers.”

“The Sandel high-definition attitude and navigation displays are fantastic replacements for worn-out mechanical flight instruments. Because they are modular replacements, they deliver an amazing array of digital display capabilities without needing to totally replace an entire panel,” explained S-TEC’s Director of Sales and Marketing, Greg Plantz. “The ability to now do a simple Field Approval and be able to offer owner/operators the option of replacing their old-generation autopilot with a high-performance S-TEC autopilot/flight director computer system just makes the whole package that much more appealing.”

“We have worked closely with the team at Sandel to develop this approval and the interface units” Plantz added. “The interfaces enable pilots to have flight director capabilities with any of our coupled autopilots at a fraction of the cost of a fully-integrated upgrade solution.”

The SA4550 Primary Attitude Display is a 4-ATI sized display which uses Sandel’s patented rear-projection display technology with LED-backlighting for maximum sunlight readability, 180-degree viewing angle, bright color rendition and an MTBF of over 10,000 hours. Both single- and dual-cue flight director command bars are supported and can be toggled by the pilot. In many cases the installation of the SA4550 will be covered under Sandel’s Supplemental Type Certificate (STC) Approved Model List (AML). Otherwise the installation can be approved through the Field Approval process of the FAA. The SA4550 can also be combined with the SN4500 Primary Navigation Display which functions as an Electronic-HSI with a full-color moving map that has the capability to show flight plans, bearing pointers, StormscopeTM and optional traffic and weather overlays. The SN4500 is also compatible with S-TEC autopilots. List price of the SA4550 and SN4500 is $20,950 for each display.

S-TEC’s System 55, 55X, 60-2 and 65 are very popular full function autopilots that have received STCs for installation in numerous aircraft, including turboprop models such as King Airs and Twin Commanders.

Sandel Avionics, located in Vista, California, is a privately held company that designs and manufactures high-performance 3- and 4-ATI Primary Attitude and Navigation Displays, completely self contained Class A and B TAWS solutions and solid-state sensors for new installation and numerous retrofits in general aviation, business aviation, air transport, government and military aircraft. Sandel’s products have been installed in thousands of aircraft throughout the world since its first shipment in 1998. Additional information can be found at Images may be downloaded from

S-TEC Corporation, based in Mineral Wells, Texas and part of the Cobham Avionics and Surveillance Division, is a leading manufacturer of innovative avionics system solutions for the business and general aviation market. Considered the industry leader in autopilot and digital flight control design and innovation, S-TEC has delivered over 35,000 systems around the world. For more information, visit:

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