Diversion Planning
I have had some discussions regarding the selection of an alternate airport or runway and would appreciate some information.
I am aware that it is OK sometimes to use 27L as an alternative to 27R at LL subject to certain conditions. However, someone else has insisted that we should use an alternate which is at least 50 miles away from our original destination on the grounds that it should be in a different weather system and is unlikely to be experiencing the same weather which would make us divert from our original destination. This obviously has a major impact on fuel load vs payload.
I have been unable to find a reference to this. Can anyone point me in the direction of a document which specifies this or is it an old wives tale?
I should mention we are talking about Public Transport in Light category piston aircraft.