They're not trying to return all their spare engines. They're just trying to decrease the amount of spares they have in their inventory. MAG is trying to return several CF343A1 and CF342B19 engines (CRJ-200), and the RR AE3007 (ERJ) spare engines. I know for sure they're going to try and dump all the CR2s back on to the leassors, so they really won't need any of those spares. They're also asking the court to dump the ERJ's whenever they want in future, incase they loose or take a settlement in the DCI ERJ litigation. They plan for sure on keeping all the CR7 and CR9's, because none of the CF342C10 or CF342D24's are on the abandon request.