Originally Posted by
plzdontfireme
Again it's not required. The AIM isn't regulatory and can't require anything. Beat that into your head please. The FOM and FARs are regulatory.
The AIM reference that I think you provided earlier in this thread doesn't even say "must" and only says "should"
It's not a "requirement" as in, you can't be violated if you don't use it. But aligning your FOM with what's in AIM is a common practice. Pretty sure most airlines have it in their FOM. I know the 3 operators I've flown for did, even though in reality hardly anyone says it.