CAT.IDE.A.140 Altitude alerting system

(a)The following aeroplanes shall be equipped with an altitude alerting system:

(1)turbine propeller powered aeroplanes with an MCTOM of more than 5 700 kg or having an MOPSC of more than nine; and

(2)aeroplanes powered by turbo-jet engines.

(b)The altitude alerting system shall be capable of:

(1)alerting the flight crew when approaching a preselected altitude; and

(2)alerting the flight crew by at least an aural signal, when deviating from a preselected altitude.

(c)Notwithstanding (a), aeroplanes with an MCTOM of 5 700 kg or less, having an MOPSC of more than nine, first issued with an individual CofA before 1 April 1972 and already registered in a Member State on 1 April 1995 are exempted from being equipped with an altitude alerting system.