Originally Posted by
hzz661225
HERE IS THE SCENERIO
DUAL FD fault between 100 and v1， it is no doublt to lift the airplane
but after t/o it is allowed to nav by nd display, and fly the sid ？？？ it is legal？
See FCOM PRO-SPO-51
If it’s a P-RNAV / RNAV 1 / RNP 1 departure, no:
REQUIRED RNAV 1(2) EQUIPMENT
The minimum navigation equipment required to enter RNAV1/RNAV2 airspace is:
‐ One FMGC
‐ One MCDU
‐ One GPS or one DME receiver to update the FM position
‐ Two IRS
‐
One FD in NAV mode
‐ Two NDs (the temporary display of ND information via the PFD/ND sw is permitted on PM side).
If it’s a conventional or RNAV overlay departure, yes:
REQUIRED RNAV 5 EQUIPMENT
The minimum navigation equipment required to enter RNAV 5 airspace is:
‐ One FMGC
‐ One MCDU
‐ One GPS or one DME receiver to update FM position
‐ Two NDs (the temporary display of ND information via the PFD/ND sw is permitted on PM side)
‐ One IRS.