Phrog,
You make great points, I can't argue that we fly at 50'. At the end of the day though, these guys ran into a marked obstacle on a repo. Not an operational flight, not SAR exercise, not Coord-Ops with CG buddies, a REPO...I have a hard time arguing the necessity of flying down low "because we do all the time." That is part of an accepted risk as part of your operational envelope.
You need to fly low to do VERTREP, you gotta fly low to do SAR and CSAR, you gotta fly low to drag a dipper. You don't have to fly low to drop a bird off in Seattle. I believe your biggest threat as helo-bubbas is running into shit at low altitude (insert numbers from 20 minutes of internet and WESS search) and mechanical malfunctions, yes? So why poke the bear? I'm all for some VFR funtime, I love shooting the Lake Chelan Gorge and buzzing around mountains, but not on a Repo from KNUW to KNIP. And not without proper planning.
You can't argue "Too cool to CHUM" to me, I'm sorry, but those kinds of attitudes get people killed, including 1 of my best buddies in a helo wreck in CA. These guys poked the bear, the bear ate 3 of them. None of this shit really matters to this guy because at the end of the day, HE has to sleep with the fact that he contributed to 3 guys getting killed. Glad he is out of jail, don't know if he has a future, but he is lucky to have the option to bitch about a shitty FITREP.
Pickle
What you might not get since all you know is P-3s (which isn't bad, it just is), is that VFR is often times the only option for helos. I don't know what the specific nav suite is of the H-60T, but if it's anything like the Navy 60s then it isn't exactly an airways machine. For instance, the 60S has a decent nav suite, but is still limited to using TACAN/VOR for IFR flight with the option of a ILS at the end. However, the 60S has limited fuel, so the weather is bad and you don't have a good alternate that's close, then there's no point in going. The 60R is even more navaid limited, having only a TACAN. Neither aircraft has a legal way to file as GPS capable right now (/G?). In helos if the weather is only kind of crappy, say between 500-1 and 1000-3, then you might as well just go SVFR. If it's really crappy then you'd better have a good reason to go where you're getting. Also, due to the helo's low speed and the nature of the enroute structure, most of the time it's just more efficient to go VFR direct.
"Standard" overland altitude for me (and everyone I've ever flown with) has always been 500' Why 500'? 500' is a good compromise between your worst cases: your transmission seizes (no longer flying, only falling), in which case being lower is better; engine failure, which will give you plenty of altitude to respond to the EP before the ground comes after you, or tail rotor drive failure, which will give you plenty of altitude to get on profile to execute the auto. In addition to these risk mitigators, 500' puts you above most obstacles and will give you decent enough vis to spot larger obstacles. With a max speed of ~150, you have a lot more time to respond to obstacles, and even more time if you slow down (a la SVFR).
The fleet standard for low levels is 200' overland. Anything below 200' and now you're on a low level flight that requires proper planning or luck. That said, there are ways to get lower if you need to by checking the LZ for hazards.
Aerodynamically, flight at much past sea level is not ideal for helos. Helos like thick air. There's a noticable performance drop off at 5k and 10k is a good round number for a service ceiling. Start flying high and you start having to contend with higher headwinds (when you go 120, a 40kt headwind is a big deal) and lower ground speeds, thus increasing your time to get anywhere. If you do end up having to fly higher, say in a mountainous environment, then helos actually like to be flown closer to the ground to stay within the boundary layer of the mountain, this usually equates to about 50-100' AGL.
So what this means is that you can't necessarily equate flying a large patrol aircraft to flying a helo. Different beasts.