CS ACNS.D.EHS.001 Applicability

ED Decision 2013/031/R

(See AMC1 ACNS.D.EHS.001)

(a) This section provides standards for airborne Mode S EHS installations which provide on request (through Mode S replies elicited by Mode S interrogations) airborne parameters in addition to parameters provided by ELS installations compliant with Section 2.

Note: The criteria that are applicable to airborne installations providing spontaneously (through ADS-B Extended Squitters) airborne parameters are specified in Section 4.

(b) This certification specification is applied together with Mode S Elementary Surveillance certification specification defined in Section 2.

AMC1 ACNS.D.EHS.001 Applicability

ED Decision 2022/008/R

Background information on Mode S EHS systems is provided in Appendix C – Background information on Mode S EHS.

Provided that the differences listed in Appendix E – Differences between CS ACNS.D.EHS and EASA AMC 20-13 have also been addressed, then previous declarations of compliance with EASA AMC 20‑13 (Certification of Mode S Transponder Systems for Enhanced Surveillance), supplemented with the additional assessments, are also acceptable means of compliance.

Note: In accordance with Regulation (EU) No 1207/2011, fixed-wing aircraft having a maximum take‑off mass greater than 5 700 kg or a maximum cruising true airspeed greater than 128.6  m/s (250 knots) and operating flights as general air traffic in accordance with instrument flight rules in the airspace within the ICAO EUR and AFI regions where EU Member States are responsible for the provision of air traffic services (ATS) are to be compliant with CS-ACNS, Subpart D, Section 3.

[Issue: CS-ACNS/4]