What I was told . . .
An "official" recommendation given to me by my FAA examiner for the CFI initial (as well as my 8000+ hour instructor) is to clear 180 degrees of the horizon. That may consist of two 90 degree turns or one 180 degree turn. (three 60 degree turns would fit the recommendation but not very practical)
An "official" recommendation given to me by my FAA examiner for the CFI initial (as well as my 8000+ hour instructor) is to clear 180 degrees of the horizon. That may consist of two 90 degree turns or one 180 degree turn. (three 60 degree turns would fit the recommendation but not very practical)