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JO 7110.65S 2/14/08 5-14-2 Automation- En Route 5-14-3. COMPUTER ENTRY OF ASSIGNED ALTITUDE The data block shall always reflect the current status of the aircraft unless otherwise specified in a facility directive. Whenever an aircraft is cleared to maintain an altitude different from that in the flight plan database, enter into the computer one of the following: NOTEA facility directive may be published deleting the interim altitude computer entry requirements of subpara b. The directive would apply to those conditions where heavy traffic or sector complexity preclude meeting these entry requirements. REFERENCEFAAO JO 7210.3, Para 8-2-7, Waiver to Interim Altitude Requirements. a. The new assigned altitude if the aircraft will (climb or descend to and) maintain the new altitude, or b. An interim altitude if the aircraft will (climb or descend to and) maintain the new altitude for a short period of time and subsequently be recleared to the altitude in the flight plan database or a new altitude or a new interim altitude. NOTEUse of the interim altitude function will ensure that the data block reflects the actual status of the aircraft and eliminate superfluous altitude updates. 5-14-4. ENTRY OF REPORTED ALTITUDE Whenever Mode C altitude information is either not available or is unreliable, enter reported altitudes into the computer as follows: NOTEAltitude updates are required to assure maximum accuracy in applying slant range correction formulas. a. When an aircraft reaches the assigned altitude. b. When an aircraft at an assigned altitude is issued a clearance to climb or descend. c. A minimum of each 10,000 feet during climb to or descent from FL 180 and above. 5-14-5. SELECTED ALTITUDE LIMITS The display of Mode C targets and limited data blocks is necessary for application of Merging Target Procedures. Sectors shall ensure the display of ModeC targets and data blocks by entering appropriate altitude limits and display filters to include, as a minimum, the altitude stratum of the sector plus: a. 1,200 feet above the highest and below the lowest altitude or flight level of the sector where 1,000 feet vertical separation is applicable; and b. 2,200 feet above the highest and below the lowest flight level of the sector where 2,000 feet vertical separation is applicable. NOTE- 1. The data block, for purposes of this paragraph, must contain the beacon code and Mode C altitude at a minimum. 2. Exception to these requirements may be authorized for specific altitudes in certain ARTCC sectors if defined in appropriate facility directives and approved by the EnRoute and Oceanic Operations Area Director. REFERENCEFAAO JO 7110.65, Para 5-1-2, Alignment Accuracy Check. 5-14-6. SECTOR ELIGIBILITY The use of the OK function is allowed to override sector eligibility only when one of the following conditions is met: a. Prior coordination is effected. b. The flight is within the control jurisdiction of the sector. 5-14-7. COAST TRACKS Do not use coast tracks in the application of either radar or nonradar separation criteria. 5-14-8. CONTROLLER INITIATED COAST TRACKS a. Initiate coast tracks only in Flight Plan Aided Tracking (FLAT) mode, except “free” coast tracking may be used as a reminder that aircraft without corresponding computer‐stored flight plan information are under your control. NOTE- 1. To ensure tracks are started in FLAT mode, perform a start track function at the aircraft's most current reported position, then immediately “force” the track into coast tracking by performing another start function with “CT” option in field 64. Making amendments to the stored route with trackball entry when the aircraft is rerouted, and repositioning the data block to coincide with the aircraft's 2/14/08 JO 7110.65S Automation- En Route 5-14-3 position reports are methods of maintaining a coast track in FLAT mode. 2. DARC does not have the capability to initiate coast tracks. b. Prior to initiating a coast track, ensure the following: 1. A departure message or progress report corresponding with the aircraft's current position is entered into the computer. 2. The track being started is within the Posted Time Update Interval (PTUI) of the aircraft's computer‐estimated position and the Flight Plan Track Position Difference (FTPD) distance of the aircraft's flight plan route. www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：Air Traffic Control空中交通管制2
