JAA Administrative & Guidance Material
Section Four: Operations, Part Three: Temporary Guidance: Leaflets (JAR-OPS)
Section 4/Part 3 (JAR-OPS) 11-3 01.02.05
- Criteria: The flight crew member should demonstrate a knowledge and understanding of the ACAS limitations including:
(i) ACAS will neither track nor display non-transponder equipped aircraft, nor aircraft not responding to ACAS Mode C interrogations; and
(ii) ACAS will automatically fail if the input from the aircraft's barometric altimeter, radio altimeter or transponder is lost.
Note 1: In some installations, the loss of information from other on-board systems such as an inertial reference system (IRS) or attitude heading reference system (AHRS) may result in an ACAS failure. Individual operators should ensure their flight crews are aware of what types of failures will result in an ACAS failure.
Clause (ii) gives 3 causes of failure, plus the IRS in Note 1.