On Sep 27, 2:57*pm, JJ Sinclair wrote:

Alas, yes they both require old fashioned dial altimiters. With todays
glass cockpits, I'm wondering if this requirement isn't outdated?
JJ

JJ - Can you, or anyone else, reference a regulation on altimeters
that includes the word DIAL.

91.205.b.2) requires for VFR flight an "altimeter"

91.205.d.5) requires for IFR flight "a sensitive altimeter adjustable
for barometric pressure".

Neither requires a dial and neither requires a mechanical instrument.

Andy