Originally Posted by
Jetjock330
How do you operate this when the airspace is closed and the aircraft are grounded and no one is allowed in that area???? This seems to be a long the same lines as having your aircraft towed to the runway to save money. Bit of a prank for free advertising.
One of the requirements which was placed on airlines operating in "marginal" VA concentrations was to have a "safety case" to allow such operation. Although at variance with the view that "airlines know best and everyone else should get out of their way" - odd that I've never heard that sentiment expressed on so many other topics here on PPrune, FTL to pick one random example springs to mind - the safety case could easily include a need to be aware of when the "marginal" VA is actually encountered - because there may be other actions required for say maintenance - and also to identify when the a/c has still inadvertnetly encountered a prohibited concentration, because further actions may be required as a result.
It could even be a reactive tool rather than a preventative one (much like a hard landing detector doesn't prevent hard landings, but does allow them to be properly addressed appropriately.