MMEL A321!Help me explain plz
29 HYDRAULIC POWER
30-03 ECAM HYD Page
Indications (Continued)
5) System Label C 3 0 (O) May be inoperative provided:
a) Associated system pressure is
verified before each departure,
and
b) Associated spoilers availability is
verified before each departure
Why we have to verify spoiler avail? (operate spoiler to confirm system pressure avail) , instead of other flight control surface.
Regards,