In glass cockpits and even in those where the pilots suffer through the tragedy of flying behind steam gauges, a back-up gryo is a good idea. Increasingly, these are solid-state gyros with their own self-contained ADAHRS and batteries. At AEA in Nashville, AVweb shot this brief product tour of the Sandia Aerospace SAI gyro. Retail price is $3,595.
This is a companion discussion topic for the original entry at https://www.avweb.com/ownership/video-sandias-new-standby-attitude-gyro