Is Slop Mandatory?
Would appreciate it if anyone can clarify whether Strategic Lateral Offset Procedures (SLOP) on the North Atlantic are mandatory. The Atlantic chart instructions regarding SLOP imply that SLOP is required for aircraft capable of the offset, without actually stating it as fact. Also, what about route offsets for other oceanic regions? How about Africa and South America? Are offsets mandatory, encouraged, or optional? Or somewhere in between? Many thanks for any inputs.