During the preliminary cockpit preparation the pilot accidentally moves the IRS Mode Selector switch from OFF to ATT instead from OFF to NAV. How can normal IRS operation be regained?
A.A.Switch to OFF, wait for ALIGN lights to extinguish, then perform full alignment procedures
B.B.Switch directly to NAV from the ATT position
C.C.Switch to the ALIGN position then to NAV
D.D.Switch to the OFF position
正确答案是A