Hey.....I got some the numbers right!
At least I recognized it as being a PHI aircraft....thought it might have been an RAF SAR Sea King for a few minutes till I remembered they don't fly yellow helicopters in the GOM.
I don't reckon Sikorsky put out Performance Charts for all the various types thus it being easy to "run out of power"?
Probably some of that ol' Boudreaux mindset of fill'er up, climb in, "We're outta here!" thinking common to the GOM.