In a message dated 12/27/01 8:47:30 AM Central Standard Time, blainethompson@hotmail.com writes: > After a long run from Gate D24 to Gate C27, we boarded. > Questions... > > Becky observed planes with such designations as "4YS", "4XP", etc. What's > that mean? > Blaine, wow dude, you did run! I walk that route for exercise when I have long breaks! (In fact, I walk all the way down to the east end of the East Terminal too.) The "4YS," etc., codes are Americans fleet identifications. Most of the airplanes (all??) still carry the TWA ID also (four digit number, your 717 was 2412). I don't know what the rhyme or reason is for them but somebody here might know. The CID-PIT-GSO should have been a Trans States ERJ-145, so it was somewhere between N801HK and N812HK. Congrats on missing the TSA flights between STL & CID & STL. Proud to be an American, Jim Hann Waterski J-41 Captain STL