<P> The tower positions are typically split into many different positions such as Flight Data / Clearance Delivery, Ground Control, and Local Control (known as Tower by the pilots); at busier facilities, a limited radar approach control position may be needed . </P> <P> The roles of the positions are; </P> <Ul> <Li> Flight Data / Clearance Delivery: Issues IFR flight plan clearances, obtains squawk codes for VFR aircraft, helps with coordination for GC / LC, and cuts the ATIS (weather). FD / CD is commonly known in the profession as the secretary of the tower . </Li> <Li> Ground: Issues taxi instructions and authorizes aircraft / vehicle movements on the airport except the active runway (s); controllers are not responsible for aircraft movement on ramps or other designated non-movement areas . </Li> <Li> Local (Tower): Issues takeoff and landing instructions / clearances and authorizes aircraft / vehicle movements on or across runways . </Li> <Li> Approach: Issues instructions to aircraft who are intending to land at the airport . This involves vectoring aircraft in a safe, orderly, and expeditious manner and, if needed, stacking the aircraft at different holding altitudes . </Li> </Ul> <Li> Flight Data / Clearance Delivery: Issues IFR flight plan clearances, obtains squawk codes for VFR aircraft, helps with coordination for GC / LC, and cuts the ATIS (weather). FD / CD is commonly known in the profession as the secretary of the tower . </Li>

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