burning alternate fuel
Greetings all!!
I'm flying over in China domestically and they require alternate fuel for all flights even if the destination is CAVU. My question is, can you start burning your alternate fuel if ATC gives you a few delaying turns or keeps you lower than flight plan? It seems crazy to divert to an alternate when the destination is CAVU. My Chinse copilots say you must divert as soon as you get down to only alternate plus reserve (45 mins). Any thoughts or even better, a regulation pertaining to this? Thanks