Originally Posted by
GutterGuard
Yes, you can. PWA 23 I. 9. Note two.
Also SRH page 81: "A pilot is allowed to drop or swap a carry-out rotation prior to the close of line bidding for the subsequent bid period if the number of reserves available in the current bid period is sufficient. It will be assumed that the number of reserves available in the subsequent bid period will be sufficient."
And for anyone who isn't aware, this won't work if the trip days in the future bid period touch an APD holiday. Generally this is only an issue in July due to July 4th and April in years where Easter falls very early in the month like this year. In that case any trip drops won't process until the future bid period schedule is published and reserve levels known.