Does anyone know what 4F1R means in the stat column on your schedule, or in the rotation number column on your time card? I went back to my May sched/time card and found this. Apparently during the audit it was added and 5:15 was added to my pay and credit. The only possible explanation I can come up with is a correction from April. I flew a GS the last two days of April and was rerouted. But the reroute was not an extension just a change in destination/layover. Any insight would be greatly appreciated.