Same on the Ansett 320s when Ansett was an airline. Also recall some very predominant hydraulic noises during push back or just before. Don't think it was the flaps deploying. Regards John YPAD On 15 Jul 2003 at 19:49, Alireza Alivandivafa wrote: > 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? >