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CS ACNS.D.ELS.015 Data transmission

Available versions for ERULES-1963177438-15894

ED Decision 2013/031/R found in: CS-ACNS Issue 4 - Airborne Communications, Navigation and Surveillance (Jun 2022)

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CS ACNS.D.ELS.015 Data transmission

ED Decision 2013/031/R

(See [AMC1 ACNS.D.ELS.015](#_DxCrossRefBm573002705))

(a) The surveillance system provides the following data in the Mode S replies:

(1) The Mode A Code in the range 0000 to 7777 (Octal);

(2) The pressure altitude corresponding to within plus or minus 38 m (125 ft), on a 95 per cent probability basis, with the pressure-altitude information (referenced to the standard pressure setting of 1013.25 hectopascals), used on board the aircraft to adhere to the assigned flight profile. The pressure altitude ranges from minus 300 m (1 000 ft) to the maximum certificated altitude of aircraft plus 1 500 m (5 000 ft);

(3) On-the-ground status information;

(4) The Aircraft Identification as specified in Item 7 of the ICAO flight plan or the aircraft registration;

(5) Special Position Indication (SPI);

(6) Emergency status (Emergency, Radio communication failure, Unlawful interference);

(7) The data link capability report;

(8) The common usage GICB capability report;

(9) The ICAO 24-bit aircraft address; and

(10) Aircraft that have ACAS II installed provide the ACAS active resolution advisory report.

(b) All other data transmitted is verified.

(1) If the system transmits one or more additional downlink airborne parameters in addition to those listed in paragraph (a), then the relevant sub specifications of [CS ACNS.D.EHS.015](#_DxCrossRefBm573002704) are also complied with.

(2) If the system transmits additional parameters on the extended squitter and if their full compliance with CS ACNS.D.ADSB has not been verified, as a minimum the aircraft identification, pressure altitude, ICAO 24-bit aircraft address is identical to those transmitted in the Mode S replies. Additionally the position and velocity quality indicators reports the lowest quality.

CS ACNS.D.ELS.015 Data transmission

ED Decision 2013/031/R

(See [AMC1 ACNS.D.ELS.015](#_DxCrossRefBm573002705))

(a) The surveillance system provides the following data in the Mode S replies:

(1) The Mode A Code in the range 0000 to 7777 (Octal);

(3) On-the-ground status information;

(4) The Aircraft Identification as specified in Item 7 of the ICAO flight plan or the aircraft registration;

(5) Special Position Indication (SPI);

(6) Emergency status (Emergency, Radio communication failure, Unlawful interference);

(7) The data link capability report;

(8) The common usage GICB capability report;

(9) The ICAO 24-bit aircraft address; and

(10) Aircraft that have ACAS II installed provide the ACAS active resolution advisory report.

(b) All other data transmitted is verified.