I thought it was the hydraulic fluid being pumped through the aircraft. -----Original Message----- From: Alireza Alivandivafa [mailto:DEmocrat2n@xxxxxxx]=20 Sent: Tuesday, July 15, 2003 8:40 PM To: AIRLINE@xxxxxxxxxxxxxxxxx Subject: Re: Airbus question In a message dated 7/15/2003 5:36:29 PM Pacific Daylight Time, damiross2@xxxxxxxxxxx writes: << Being a boring airplane to look at, it needs something to attract attention so, just before engine start, a chainsaw is thrown into the engine. >> Funny. They are not so boring to look at. They are the chubby kids of the air, especially 319s and 318s. So, what is the sound really. I have never heard it on a 737, and they mostly carry the same engines