Document ID: chunk:federal_register_of_legislation:F2024C01173:reg:3:p1
Version: federal_register_of_legislation:F2024C01173
Segment Type: reg
Provision Reference: reg 3 (pt 1/4)
Character Range: 313674–316601

3                                                     In flight emergency (unless otherwise instructed by air traffic control)  7700

 (6B) Despite subsection (6A), a pilot of an aircraft for a flight does not have to set a Mode A code mentioned in column 2 of table 11.67(6A) if the pilot reasonably believes that maintaining an existing Mode A code would result in a safer outcome.
 (7) If an approved transponder capable of reporting pressure altitude is fitted to an aeroplane for a flight, it must be operated with altitude reporting enabled.
 (8) Pressure altitude information reported by an approved transponder or an approved ADS-B OUT equipment configuration must be determined by:
 (a) a barometric encoder of a type authorised by CASA or the NAA of a recognised country, in accordance with (E)TSO-C88a; or
 (b) another system approved under Part 21 of CASR as having a level of performance equivalent to a system mentioned in paragraph (a).

11.68  Mode S transponders and ADS-B OUT—specific requirements
 (1) An approved ADS-B OUT equipment configuration fitted to an aeroplane for a flight must be configured in accordance with the following:
 (a) the assigned aircraft address must be entered into the equipment;
 (b) with one of the following forms of aircraft flight identification entered into the equipment:
 (i) if a flight notification is filed with air traffic control for the flight—the aircraft identification mentioned on the flight notification;
 (ii) if no flight notification is filed with air traffic control for the flight—the aircraft registration mark.
 (2) An approved Mode S transponder must transmit each of the following when interrogated on the manoeuvring area of an aerodrome or in flight:
 (a) the assigned aircraft address;
 (b) the Mode A code;
 (c) the Mode C code;
 (d) subject to subsection (3)—the aircraft flight identification.
 (3) Transmission of the aircraft flight identification by an approved Mode S transponder is optional for an aeroplane that was first certificated in its country of manufacture before 9 February 2012 (an older aeroplane). However, an older aeroplane that is equipped to transmit, may transmit its aircraft flight identification.
        (4) If an approved Mode S transponder transmits any Mode S EHS DAPs, the transmitted DAPs must comply with the standards set out in paragraph 3.1.2.10.5.2.3 and Table 3-10 of Volume IV, Surveillance and Collision Avoidance Systems, of ICAO Annex 10.
Note 1: Paragraph 3.1.2.10.5.2.3 includes paragraphs 3.1.2.10.5.2.3.1, 3.1.2.10.5.2.3.2 and 3.1.2.10.5.2.3.3.
Note 2: Australian Mode S SSR supports EHS DAPs. Transmission of Mode S EHS DAPs that are not in accordance with the ICAO standards may provide misleading information to air traffic control. Operators need to ensure that EHS DAPs are being transmitted.
 (5) If an approved Mode S transponder is fitted to an aeroplane first certificated in its country of