I had mine certified IFR a few months ago. I have an AFS EFIS, a G5, and a conventional gauge. They checked all three. The EFiS and G5 did fine, the round gauge didn’t make the cut and got placarded “VFR ONLY”
I've asked myself the same questions. But looking at the FARs, I can't find a loophole. Technicians doing the check have told me the same thing.What if the man has 4 watches?
What if one of the altimeters is strictly backup and intentionally not connected to the static system in order to serve as a backup for frozen static altimeter failure?
What if it isn't on the minimum equipment list?
What if it's plackarded vfr only or inop?
It is possible that I have done that. Nevertheless I don't see it as an allowed loophole in the regs. Maybe someone else knows otherwise.Why can’t you just placard the non-IFR altimeter? That’s what the local avionics shop did for me with my altimeter that didn’t meet IFR accuracy as they certified the results of the airplane for IFR.
It is possible that I have done that. Nevertheless I don't see it as an allowed loophole in the regs. Maybe someone else knows otherwise.