Originally Posted by
Robert-Ryan
if there was to be a mishap and it's found it could have been avoided because an aircraft travelled further than needed because MME wasn't listed, the airline would be crucified
For info, on commercial aircraft, an en-route alternate needs to be within 1 hour flight time. On the A319, that is 380 miles. A destination alternate has no limit as long as you have enough fuel to get there, hold and make an approach.
PS. Airlines won't be crucified. It is a Captains decision. Currently I could only divert to MME in an emergency such as if I was on fire or about to run out of fuel.