I'm thinking bleed air starter noise, like on the DC8-70 series where interaction with the compressor cascade often set up 'sawtooth' waves, but you could be right about the chainsaw pitched into the inlet... - RWM David MR wrote: > > 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. > David R > http://home.attbi.com/~damiross > http://home.attbi.com/~damiross/books.html > > ----- Original Message ----- > From: "Alireza Alivandivafa" <DEmocrat2n@xxxxxxx> > To: <AIRLINE@xxxxxxxxxxxxxxxxx> > Sent: Tuesday, July 15, 2003 16:49 > Subject: [AIRLINE] Airbus question > > > Everytime I have flown on an A320 series plane, I have heard an awful > > sounding noise on engine start up. Sounds like a high pitched chainsaw > start up. > > Any thoughts?