A controlled flight is required to inform the concerned ATC unit when the average TAS at
cruising level deviates or is expected to deviate compared to that given TAS in the Flight Plan
by at least plus or minus:
a. 10%
b. 3%
c. 5%
d. 2%
cruising level deviates or is expected to deviate compared to that given TAS in the Flight Plan
by at least plus or minus:
a. 10%
b. 3%
c. 5%
d. 2%