True Cat A Helicopters

[Grasshopper]

Can't help but wonder what a pair of tandem C30's might have done there (other than jack the price up substantially, of course).

 

It appears that BC Hydro, after all their agonizing and studying following the Cranbrook tragedy, have come up with an interesting policy requiring the use of twins for specific tasks, but not demanding Cat A. Rather, depending on the task, they limit the payloads to amounts that will allow them to fly away OEI. While this may be incredibly limiting in the twins that have OEI charts, it does provide them with some degree of confidence, not to mention a good image with the less than enlightened public.

[Freefall]

I think the md902 has the best light twin oei performance but I could be wrong.

[twitch]

76B will give you 100 or so feet per min at 30min power 20c and 4000' at

its max gross weight of 11700lbs. Not too shabby.

[vortex]

It appears that BC Hydro, after all their agonizing and studying following the Cranbrook tragedy, have come up with an interesting policy requiring the use of twins for specific tasks, but not demanding Cat A. Rather, depending on the task, they limit the payloads to amounts that will allow them to fly away OEI. While this may be incredibly limiting in the twins that have OEI charts, it does provide them with some degree of confidence, not to mention a good image with the less than enlightened public.

To quote one of the BC Hydro guys that was on board VIH's EC135 when they did a demo..."ya, its got the performance on one engine for us but we don't want to pay $4000.00/hr."

So safety DOES have a price limit for them.

Unfortunately for several operators who went out and bucked up for twins to help appease Hydros quest for safety, there was several other qualifiers to help them decide who can safely fly for them such as FN content within the company

[tail rotor]

The NP has dual fadec over the N. I believe it also has 14 more HP per engine over the N, very similar.

[sirlandsalot]

I wonder if there will issues with fadec and live line work, could the machine shut itself down coming into contact the high voltage? Don't want to pay $4000.00 an hr, Hydro is all over the map. Only a handfull of companies are now cleared through Hydro's audit to fly. I believe it is only 9 operators, some operators got twins and didn't pass the audit!!

[Rotorhead139]

Does anybody know of a list of twin engine helicopters that can truly fly on one engine. Ie twin ranger with twin c20's, bo 105 with twin c28's and the bk 117's. A 212 isn't much good on one engine with any load, nor is a twin star. This seems to be a grey area. For example, an operator says they have a twin...twin star, could you pull a stove on it and still fly?

 

 

Pretty sure the AW139 will do it! Loads of power with the PT6C-67Cs......