Switch to Aspen 2000 Max. Do I keep the Altimeter, A.S.I. and A.H.I. "steam" gauges ?
Hi everyone. I'm getting ready to switch the panel in my 182Q to the Aspen 2000 Max system, which means (due to redundancy) I no longer am required to keep a separate Altimeter, A.S.I. and A.H.I. (artificial horizon indicator) in the panel. My installer asked me if I wanted to keep them or not. My first response was "No, why would I keep the old gauges when they are superfluous?" He pointed out that even in the new Cessna's they still have those units as back up. Which amazed me, especially the vacuum operated A.H.I. Why, on an $800K+ aircraft would they want to keep the "guaranteed to break every 500 hrs" vacuum system in place? At least they could go to a Garmin G5 unit (or an electric A.H.I.) to eliminate the vacuum system. Anyway, my question was why do they leave any of the three? Unless possibly the Glass panel they use (is it a G1000?) does not have redundancy? My question(s) are; 1.) Are the glass panels in new Cessna's redundant? 2.) What would you do? Thanks for the advice! Bill