In our research done for 5500ft, 35 degrees, 2 hrs endurance and 3 crew at 80kg's each with the ALS kit installed and then of course dependant on how long you fly to get to the patient(might be 15 min so you have to include it) an extra 80kgs, the EC145 and A109 Grand barely made Cat A without reaching the 2 hours endurance requirement(135 and a few others way to fuel limited). The Grand did the best with 1.5 hrs max and the 145 1.3 hrs max.
If you want to complicate it further. Neither machine made it in IFR configuration!!!!!
no matter the fuel onboard.
350B3, EC130, 407 and 119 although it's oGE graph makes it dodgy(but no more than the 145/109) made the criteria without compromise. The 130 has the most to spare due to the extra 180kg MAUW over the 350 and we operate her there for the last 2 years and she does it with a smile(no limits recorded). The 130 is fitted with TCAD, EGPWS, Stormscope, EX500, ALS system and even a cd/I-pod player.
4 accidents in 10 days again recently- 3 twins? Does the stats support the CAA's worrldwide obsession with twins?