B A R R Y wrote:
Gig 601XL Builder wrote:

Which brings up a very interesting question. I'm building a plane
that will be licensed as an Experimental. Once inspected I'll have
to test fly for 40 hours for phase one. If I use a Hobbs as the
official time and hook it to the MS I would probably end up reducing
the phase one time considerably.

That is interesting. Does the FAA specify tach vs. oil pressure
Hobbs, vs. electric Hobbs?

Think of how many pilot logbooks are based on electric Hobbs time.

I can't think of a single second in my log book that isn't based on Hobbs
time. Some were oil pressure activated but the vast majority were MS
activated.