For fast IRS alignment: During fast alignment, IRS reset the ground speed and some internal filters to zero, but IRS does not estimate the position of the aircraft. The flight crew sets the IR mode selector to OFF and then returns to NAV mode within ().
For fast IRS alignment: During fast alignment, IRS reset the ground speed and some internal filters to zero, but IRS does not estimate the position of the aircraft. The flight crew sets the IR mode selector to OFF and then returns to NAV mode within ().
