" Fan of standing behind MD 11 apu exhaust on chilly nights. " -- DM But oh, doesn't the noise absolutely kill your ears? Mike Burris Cambridge, Massachusetts Non a fan on A319 APU's after they come in because they seem super loud. That's funny, recently one of Avialeasing AN 24's started theirs close by ( I think behind no.2 engine) and I could not believe how loud that thing was. I though I was standing right behind a jet fighter, and I have lived very close to NAS Miramar in the mid 80's.!! DM