'Out of the window' positional awareness is improved through the application of visual enhancement technologies thereby reducing the difficulties of transition from instrument to visual flight operations. The direct operational consequence is that the applied landing operation minima can then be of Type B (100 ft DH ¿ RVR 300m) instead of Type A (300 ft DA/DH ¿ RVR 800m), preventing as much as possible traffic disruption in Low Visibility Conditions. This operational improvement is intended for flight crews, and corresponds to the use of Enhanced Flight Vision System (EFVS) technologies displayed in HUD to provide operational credit in approach as permitted per EASA EU 965/2012 to face Low visibility conditions.
From a global ATM network standpoint, the EFVS operations allow to retain traffic at most of secondary aerodromes by providing operational credit at most of runway ends with precision or non-precision landing minima (LPV, LNAV/ VNAV, ILS CAT1¿). The operational credit provided by EFVS is particularly important regarding secondary aerodromes because they usually have CAT1 or higher than CAT 1 RVR ¿ DA/DH minima and are therefore potentially more frequently impacted by adverse weather conditions.
|A/C-22||Enhanced Flight Vision System (EFVS)||Analysis|
|AUO-0404||Synthetic Vision for the Pilot in Low Visibility Conditions|
|#117||Reducing Landing Minima in Low Visibility Conditions using Enhanced Flight Vision Systems (EFVS)||SESAR1||Analysis|