Originally Posted by
Gjn290
There are starting cycle limitations for the PT-6 but as far as a waiting period after shutdown I've never heard of that.
As for the starting cycle limitations:
Airplane battery power is:
30 seconds ON - 60 seconds OFF
30 seconds ON - 60 seconds OFF
30 seconds ON - 30 minutes OFF
Repeat above
External power is:
20 seconds ON - 120 seconds OFF
20 seconds ON - 120 seconds OFF
20 seconds ON - 60 minutes OFF
Repeat above
Those are less restrictive than the ones in my AFM for a PT6A-60A on the BE-300s we fly.
30 seconds ON - 5 minutes OFF
30 seconds ON - 5 minutes OFF
30 seconds ON - 30 minutes OFF
satpak - what says your book?