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flyover · September 3rd, 2004, 09:18

[ QUOTE ]
[img]/ubbthreads/images/graemlins/blush.gif[/img]I guess since we are on the subject, why is it that the MD-80 makes a really loud "pop" sound when the engines start, I have noticed that no other airplanes do that/are that loud. Any body know why?

[/ QUOTE ]

I've got about 5,000 hours on the airplane (in the quiet end) and didn't know that. If it's happening consistently and you hear it in the back, I would have to guess it's one of the many valves that open and close during a start cycle.

September 3rd, 2004, 09:18	#11
flyover Old Skool Join Date: Mar 2004 Location: Georgia Posts: 3,389	Re: Boeing 717 / MD80 question [ QUOTE ] [img]/ubbthreads/images/graemlins/blush.gif[/img]I guess since we are on the subject, why is it that the MD-80 makes a really loud "pop" sound when the engines start, I have noticed that no other airplanes do that/are that loud. Any body know why? [/ QUOTE ] I've got about 5,000 hours on the airplane (in the quiet end) and didn't know that. If it's happening consistently and you hear it in the back, I would have to guess it's one of the many valves that open and close during a start cycle.