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What Is That Noise On The 727-200  
User currently offlineNasmal From United States of America, joined Jun 2000, 227 posts, RR: 0
Posted (15 years 11 months 2 weeks 6 days ago) and read 4931 times:

what is that noise on the 727-200 you hear like ever 10 mins when your on the ground. It kinda sounds like water transfering from on place to another. does anyone know what it is

1 replies: All unread, jump to last
User currently offlineAirgypsy From United States of America, joined Nov 1999, 130 posts, RR: 2
Reply 1, posted (15 years 11 months 2 weeks 5 days 21 hours ago) and read 4754 times:

How about air. Pneumatics runs the airconditioning and starts the engines. They have to switch off the air to the airconditioning to start engines and then switch back.

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