Technical Provisions for Mode S Services and Extended Squitter

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B-10 Technical Provisions for Mode S Services and Extended Squitter B.2.3.6 STATUS REGISTER FORMAT The status register shall be formatted as specified in §A.2.3.6. B.2.3.7 EVENT-DRIVEN PROTOCOL The event-driven protocol register shall be as specified in §A.2.3.7. B.2.3.8.1 EMERGENCY/PRIORITY STATUS B.2.3.8.1.1 Format B.2.3.8 AIRCRAFT STATUS The aircraft status squitter that conveys emergency/priority status information shall be formatted as specified in the definition of transponder register 6116, Table B-2-97a. B.2.3.8.1.2 Transmission rate This message shall be broadcast at random intervals that are uniformly distributed between 0.7 and 0.9 seconds for the duration of the emergency. B.2.3.8.1.3 Message delivery Message delivery shall be accomplished using the event-driven protocol (see §A.2.3.7). The broadcast of this message shall not take priority over the ACAS RA broadcast but shall take priority over all other event-driven message types, as specified in §B.2.5.5.3. B.2.3.8.2 ACAS RA BROADCAST B.2.3.8.2.1 Format DRAFT - Working Paper ASP TSGWP11-01 for review by the TSG during the meeting in June 2011 in Paris Draft The aircraft status squitter that conveys ACAS RA broadcast information shall be formatted as specified in the definition of transponder register 6116, Table B-2-97b. B.2.3.8.2.2 Transmission rate This message shall be broadcast at random intervals that are uniformly distributed between 0.7 and 0.9 seconds for the duration of the emergency. B.2.3.8.2.3 Message delivery Message delivery shall be accomplished using the event-driven protocol (see §A.2.3.7). The broadcast of this message shall take priority over the emergency/priority status broadcast and all other event-driven message types, as specified in §B.2.5.5.3. DRAFT - Working Paper ASP TSGWP11-01 for review by the TSG during the meeting in June 2011 in Paris
DRAFT - Working Paper ASP TSGWP11-01 for review by the TSG during the meeting in June 2011 in Paris Appendix B B-11 B.2.3.9 RESERVED FOR TARGET STATE AND STATUS INFORMATION The target state and status information squitter shall be formatted as specified in the definition of register 6216 and in the following paragraphs: B.2.3.9.1 TRANSMISSION RATE The Target State and Status Message shall be broadcast at random intervals uniformly distributed over the range of 1.2 to 1.3 seconds for the duration of the operation. B.2.3.9.2 MESSAGE DELIVERY Extended Squitter Message delivery shall be accomplished using the event-driven protocol (see §A.2.3.7). B.2.3.9.3 VERTICAL DATA AVAILABLE/SOURCE INDICATOR This 2-bit (ME bits 8 — 9, Message bits 40 — 41) subfield shall be used to identify if aircraft vertical state information is available and present as well as the data source for the vertical data when present in the subsequent subfields. Encoding shall be defined as specified in the following table. Any message parameter associated with vertical target state for which an update has not been received from an on-board data source with the past 5 seconds shall be considered invalid and so indicated in the Vertical Data Available/Source Indicator subfield. Coding (Binary) (Decimal) Meaning 00 0 No valid Vertical Target State data is available 01 1 Autopilot control panel selected value, such as Mode Control Panel (MCP) or Flight Control Unit (FCU) Draft 10 2 Holding altitude 11 3 FMS/RNAV system B.2.3.9.4 TARGET ALTITUDE TYPE This one bit (ME bit 10, Message bit 42) subfield shall be used to identify whether the altitude reported in the “Target Altitude” subfield is referenced to mean sea level (MSL) or to a flight level (FL). A value of ZERO (0) shall indicate target altitude referenced to pressure-altitude (flight level). A value of ONE (1) shall indicate a target altitude referenced to barometric corrected altitude (mean sea level). B.2.3.9.5 TARGET ALTITUDE CAPABILITY This 2-bit subfield (ME bits 12 — 13, Message bits 44 — 45) shall be used to describe the aircraft’s capabilities for providing the data reported in the target altitude subfield. The target altitude capability subfield shall be encoded as specified in the following table. DRAFT - Working Paper ASP TSGWP11-01 for review by the TSG during the meeting in June 2011 in Paris
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Appendix C C-11 C.2.3.2.2 Time Sync
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Appendix C C-25 Notes.— DRAFT - W
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Msg Bit # “ME” Bit # Appendix C
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Appendix C C-59 Register 0516 DRAFT
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Appendix CD CD-3 ACTIONS EVENTS DRA
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Appendix CD CD-7 too many broadcast
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Appendix CD CD-13 CD.2.4.4.1.2 Poss
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Appendix CD CD-23 CD.2.4.7.5 BINARY
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Technical Provisions for Mode S Services and Extended Squitter

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