On Oct 31, 12:44*pm, Darryl Ramm wrote:

It *has* to record (cockpit ambient) pressure altitude to be an IGC
approved recorder, and it also has to record the GPS altitude as well
(if it has a GPS fix).

I thought new flight recorders were allowed, even required, to be
connected to a static port. This eliminates the differences between
the logger and the altimeter due to speed changes. Not sure when the
requirement changed but it has been discussed here before.

So the real question is will the blind PowerFLARM have a static
connection.

Andy