Wait....and balance!
Wich type of B412?
AB412 standards & AB412SP's had a different CAT A certification compared to AB412EP's; the first ones had two kinds of T/O profiles (cat A vertical & cat A normal), slightly different from cat A helipad, elevated helipad and runway T/Offs from EP's manuals.
Anyways AB412EP are certified in CAT A, fulfilling JAR/EASA performance class 1,2 (3 of course).
In some cases it is certified in PC2 with exposure time at MTOW higher than standard PC2.
cheers