Navigate / EASA
AMC2 NCC.IDE.A.125(a)(3) Operations under IFR – flight and navigational instruments and associated equipment

ED Decision 2013/021/R

ALTIMETERS — IFR OR NIGHT OPERATIONS

Except for unpressurised aeroplanes operating below 10 000 ft, the altimeters of aeroplanes operating under IFR or at night should have counter drum-pointer or equivalent presentation.