Appendix D â Differences between CS ACNS.D.ELS and JAA TGL 13 Rev1
ED Decision 2022/008/R
To demonstrate compliance with the CS-ACNS elementary surveillance requirements, the following additional points need to be addressed for aircraft previously compliant with Joint Aviation Authorities (JAA) Temporary Guidance Leaflet (TGL) 13 Revision 1:
(a)    verification that the aircraft identifications sent in âextended squitterâ messages and in the Mode S replies are identical (see CS ACNS.D.ELS.015(b)(2));
(b)    verification that the pressure altitudes provided in âextended squitterâ messages and in Mode S replies are identical if the installation sends âextended squitterâ messages (see CS ACNS.D.ELS.015(b)(2)); and
(c)Â Â Â Â Â other parameters provided by the airborne surveillance system are verified as correct and are correctly indicated, as available (see CSÂ ACNS.D.ELS.015(b)(1)).
Note. The tests of the
other parameters transmitted by the system allow certification of aircraft not
subject to full EHS mandate but capable of transmitting some of the parameters
which can be used by the operational systems.
[Issue: CS-ACNS/4]
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