Well said.... I agree that we should use all resources possible... Just curious.. If your company has a captain thats stupid enough to fly into known severe turbulence and you as a dispatcher cannot allow a flight to continue into unsafe conditions how are you going to stop him?
I'll try and answer that in just a minute, but first, let me tell you about something that happened at work today.
I work for a fractional, and thus I am not really a dispatcher here. I'm a flight follower, and I'm powerless to say or do anything to prevent something stupid from occuring. For instance:
One of my airplanes lost the weather radar enroute to BCT. There were thunderstorms everywhere, and apparently they had a pretty bad ride - though they didn't bother calling me to ask for a reroute.
So they call me on the ground and tell me they're broke. Long story short, Mx says "Could not duplicate, ops check good." So the crew says they're going to depart for PBI, 70nm away...
But there's thunderstorms all over the place, and a Convective SIGMET for most of Florida. So I tell the crew about the severe weather, and voice my concern about operating into known hazardous weather with an unreliable weather radar. The crew doesn't seem to mind.
All of my experience in 121 says "NO GO". But here, I get laughed at. Care to guess what the D.O. told me? "They're not
in the thunderstorms, they're
under it."
Nice knowing that we're willing to fly through a microburst on short final that was generated by a thunderstorm we could have seen
if we had an operable radar.
So, to answer your question:
If the crew was unresponsive to "negotiations", the situation was genuinely unsafe and I truly felt the need to intervene, I'd call the appropriate ATC facility, identify myself, and advise them that I am excercising my emergency authority to prevent the continuation of flight into unsafe conditions.
I'd request that ATC issue an amended clearance to avoid the hazard. If they were unable to accomodate the request, I'd ask them to divert the aircraft to the nearest suitable airport.
That way, if the captain insists on continuing into the unsafe condition, he'll have to declare an emergency to do it.
The Kack