Document ID: chunk:federal_register_of_legislation:F2025C00187:reg:3:p3
Version: federal_register_of_legislation:F2025C00187
Segment Type: reg
Provision Reference: reg 3 (pt 3/7)
Character Range: 394750–397530

1090 Megahertz (MHz) Extended Squitter ADS-B; and
(b) the AFM or flight manual supplement attests to the certification; and
(c) the GNSS system meets the relevant performance requirements mentioned in section 26.71.

      26.72A Approved Mode S transponder with Class B TABS position source device equipment configuration — requirements
       (1) A Mode S transponder must be of a type that is:
(a) authorised in accordance with (E)TSO-C166B; or
(b) approved under Part 21 of CASR as having a level of performance equivalent to that of a type compliant with paragraph (a).
       (2) When required to be operated, the Mode S transponder must transmit NACp, NIC, SIL and SDA values in accordance with the authorised capability of the GNSS position source.
       (3) The geographical position transmitted by the Mode S transponder must be determined by:
(a) a Class B TABS position source device that is authorised in accordance with (E)TSO-C199; or
(b) another source approved under Part 21 of CASR as having a level of performance equivalent to that of a device compliant with paragraph (a).
       (4) If a Mode S transponder with Class B TABS position source device transmits a SIL value of less than 2, the aircraft must not enter any controlled airspace in which the aircraft must be fitted with, or carry, equipment that is of an approved ADS-B OUT equipment configuration.

      26.72B Approved integrated TABS device — requirements
       (1) An approved integrated TABS device (the device) must only be operated in transmitting mode if the flight is conducted:
(a) under the VFR; and
(b) below FL290; and
(c) in Class D, E or G airspace.
       (2) The device must meet the technical specifications in (E)TSO-C199 that are for a device with integrated Class A TABS and Class B TABS functionality.
       (3) The device must transmit a SIL value of 1.
       (4) The device must be authorised by the relevant NAA of the equipment manufacturer as meeting the standards mentioned in subsections (2) and (3).
Note   Section 26.66 provides for an exception to the relevant NAA authorisation requirement for certain kinds of light sport, experimental and other aircraft.

      26.72C Approved EC device — requirements
       (1) An approved EC device (an EC device) must only be operated in transmitting mode if the flight is conducted:
(a) under the VFR; and
(b) below FL290.
       (2) The EC device must not be operated in transmitting mode concurrently with a Mode S transponder that is also transmitting ADS-B.
Note   An EC device may be operated concurrently with a Mode A/C, or a Mode S transponder (other than one that is transmitting ADS-B) but it is not a substitute for mandatory carriage of a transponder in relevant airspace.
       (3) The EC device must meet