This seems useful and helpful so where does it break for "actually planning a real world flight"? Not being sarcastic, actually seeking to understand.
It doesn't my quote was "once you leave the realm of actually planning a real world flight." It's fine for real world planning, not for sim planning (which is what I use it for today).
He has already addressed the inability to use an airport as a waypoint.
That's good, that was one of the main reasons I was leaving skyvector. I'll give it a few days to settle before I make a final decision.
The briefing IS logged with Lockheed Martin so it does (according to David) count as an official briefing.
Hmm ok, I'll have to take his word on that. The rules on weather briefings change pretty regularly (the AC I was about to pull out to say he can't do that was recently cancelled). The help portion of his webpage talks about how it integrates with FSS and it all makes sense to me, but without a definitive FAA statement the best I will go with is "maybe".
The closest thing to an FAA statement on the topic comes from AC00-45G which states the following:
Prior to every flight, pilots should gather all information vital to the nature of the flight. This
includes a weather briefing obtained by the pilot from an approved weather source via the
Internet (see paragraph 1.3.2) and/or from a FSS specialist.
Paragraph 1.3.2 lists DUATS, DUAT, FSS, and ADDS as internet sources of weather. David is saying his weather comes from the FSS so you can read that either way (the paragraph does list a specific FSS URL however and it's not the one David refers to in his help).
Me personally I always go to DUATS after I self brief to log an official briefing, this new tool won't change that process for me.
However, for those following along 91.103 doesn't require an "official" briefing, but in the event of an accident/violation/reason for the FAA to look at you a logged briefing with FSS (or DUAT/DUATS) "proves" to the FAA that you've met the 91.103 requirement. Otherwise you may have to "prove" you met the requirement on your own. According to David skyvector does this now, honestly he's most likely correct (as he had to talk to them to get the access he now has), I can't give a 100% answer however.
There hasn't been any sort of NTSB case law on this (that I have access to, I don't purchase any databases for legal decisions so I may have missed something, I'm also not a lawyer) so it's really a gray area in my mind. And realistically the odds of this being an "issue" to the FAA are low at best.
So my final answer is yes skyvector most likely has properly integrated with FSS to process "official" briefings. The briefings look identical to a DUATS briefing and I have no reason to believe he would lie to us about something that critical. For me personally however, I'm super paranoid and as a result will still go to DUATS to get my "official" weather briefings.
I'll edit out my post that says that they weren't.