True, but I think you can also ask scheduling for a 24-hour callout. I can't find any information about it in either the FOM or the ALPA contract. But, from what I understand, you can request a 24-hour callout if you have reserve days as a commuter, or if you live too far from the airport for a 90-minute callout to be practical. Here's my experience with it: My first month out of IOE, I had a build-up line with a few reserve days. I live in MEM, and commute to DTW (at least for two more weeks). When I called scheduling about another matter, I asked something about those reserve days. The person I talked to said I could request a 24-hour callout for any reserve days I had, meaning they had to give me a full days notice if they were going to use me on a reserve day. The person I spoke to said that most people who commute request a 24-hour callout period for just about any reserve period, unless they're going to be in domicile anyway. I have to qualify this by saying that I finished IOE and went straight into holding a line in the 900, and therefore know very little about all the rules about reserve and ready reserve. I've worked two days of reserve my entire time at Mesaba, and that was just to finish out the rest of the month after I finished OE. Maybe someone with a little more experience can elaborate on the 24-hour callout deal, but I know it exists. I'd like to know, when you request it, if scheduling has to give it to you, or if it's at their discretion.