Had a similar situation occur to me last year under the prior contract.....however, verbiage is still the same in our new one
David, (senior alpa contract guru), maintains that it is a long standing accepted practice---from before our first contract----and that all FedEx pilots should know that they wouldn't get the 18 CH for a long sub window if they were still on a trip during their IAP......because, if they were on a trip the company's position is that since you never sat any portion of your IAP an IAP didn't exist. (and they use 25.3.f to justify this position----similar to the 30 min rule for reserve folks)
thus, if your trip blocks in 31 minutes prior to the end of your IAP.....you sat a part of it and get 18CH towards sub gurantee. block in one minute later, and you get nothing.
At least that's how it was in the old contract, now that we are using common language, the next guy it happens to should challenge it......because, when you read the words in the contract. the IAP period is a definition. no where in the contract does it say the IAP doesn't happen if you aren't available for any portion of it
