A method for providing a display to a flight crew of an aircraft comprising the steps of: receiving a required time of arrival control instruction for arriving at a particular waypoint at a particular time; in a negotiation phase, calculating an initial required aircraft speed at which the aircraft is required to fly in order to arrive at the particular waypoint at the particular time; providing a flight display comprising a speed tape, wherein the speed tape comprises an initial RTA target speed that is graphically displayed using a first symbology, wherein the initial RTA target speed correlates with the initial required aircraft speed, and wherein providing the flight display is not accompanied with a concurrent aircraft speed change to match the initial target speed, wherein the speed tape further comprises a graphical indicator (321, 323) of an upper RTA control speed range limit and a lower RTA control speed range limit, wherein the RTA control speed range is based upon each of: aircraft altitude, aircraft wind margins, and aircraft cost index; receiving an input accepting the RTA control instruction; in an execution phase, calculating an updated required aircraft speed, at which the aircraft is required to fly in order to arrive at the particular waypoint at the particular time, wherein, if a change in flight conditions has occurred between the steps of calculating the initial required aircraft speed and calculating the updated required aircraft speed, the updated required aircraft speed is either faster or slower than the initial required aircraft speed; updating the flight display comprising displaying the updated RTA target speed on the speed tape using a second symbology that is different from the first symbology and discontinuing the display of the first symbology; and providing an instruction to the autothrottle of the aircraft to fly the aircraft at the updated RTA target speed. receiving a required time of arrival control instruction for arriving at a particular waypoint at a particular time; in a negotiation phase, calculating an initial required aircraft speed at which the aircraft is required to fly in order to arrive at the particular waypoint at the particular time; providing a flight display comprising a speed tape, wherein the speed tape comprises an initial RTA target speed that is graphically displayed using a first symbology, wherein the initial RTA target speed correlates with the initial required aircraft speed, and wherein providing the flight display is not accompanied with a concurrent aircraft speed change to match the initial target speed, wherein the speed tape further comprises a graphical indicator (321, 323) of an upper RTA control speed range limit and a lower RTA control speed range limit, wherein the RTA control speed range is based upon each of: aircraft altitude, aircraft wind margins, and aircraft cost index; receiving an input accepting the RTA control instruction; in an execution phase, calculating an updated required aircraft speed, at which the aircraft is required to fly in order to arrive at the particular waypoint at the particular time, wherein, if a change in flight conditions has occurred between the steps of calculating the initial required aircraft speed and calculating the updated required aircraft speed, the updated required aircraft speed is either faster or slower than the initial required aircraft speed; updating the flight display comprising displaying the updated RTA target speed on the speed tape using a second symbology that is different from the first symbology and discontinuing the display of the first symbology; and providing an instruction to the autothrottle of the aircraft to fly the aircraft at the updated RTA target speed.