Originally Posted by
Globemaster2827
SLOP is also found in the MNPS, but consists of flying route center line or offsetting 1 or 2 miles right. Never left. There isn't anything else you can get out of a question about SLOP that I can think of.
If you're on a SLOP you're required to return back to the original airway (rather that be a random track or a published NAT when they're active) prior to coasting in. Don't know if it's a test question but it is a requirement when discussing it.