At the alternate aerodrome, the commander of a turbojet engine aeroplane should have a fuel quantity (final reserve) sufficient for flying during:
a. 30 minutes at holding flight speed at 1,500 ft
b. 45 minutes at holding flight speed at 1,500 ft
c. 30 minutes at cruising speed
d. 45 minutes at cruising speed
a. 30 minutes at holding flight speed at 1,500 ft
b. 45 minutes at holding flight speed at 1,500 ft
c. 30 minutes at cruising speed
d. 45 minutes at cruising speed