Letters: November 2014
I have a single-screen Aspen Avionics EFD1000Pro installed in my Piper Arrow since July of 2012 and it is amazing. Unfortunately, I learned that if the system loses pitot input (if it’s clogged, for example), you completely lose most all critical data, even non-pitot-sourced data. This results in a black screen with two red Xs covering the upper and lower halves. This means no attitude, airspeed, altitude, heading, HSI or GPS overlay from an external navigator, like a Garmin GNS530 or 430.