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Forum: Tech Log

2nd Dec 2016, 22:05

Replies: 13

Are the MD-90's pylon flaps EVER cycled?

Views: 8,397

Posted By WhiskeyNovember

Sweet mother of god....you just blew my mind. ...

Sweet mother of god....you just blew my mind.

I swear I must have stared at dozens of MD-90 control checks over the years trying to see those damn things move. Thanks so much for finding the...

Forum: Tech Log

2nd Dec 2016, 14:29

Replies: 13

Are the MD-90's pylon flaps EVER cycled?

Views: 8,397

Posted By WhiskeyNovember

Thanks so much for finding this. It doesn't seem...

Thanks so much for finding this. It doesn't seem to specify whether the pylon flaps actually deploy during a control check on the ground. It's possible they only ever deploy while in flight.

In...

Forum: Tech Log

1st Dec 2016, 22:53

Replies: 13

Are the MD-90's pylon flaps EVER cycled?

Views: 8,397

Posted By WhiskeyNovember

I thought so too. But in speaking with multiple...

I thought so too. But in speaking with multiple maintenance technicians, none of them have ever seen the pylon flaps cycled even during heavy checks.

Forum: Tech Log

1st Dec 2016, 17:00

Replies: 13

Are the MD-90's pylon flaps EVER cycled?

Views: 8,397

Posted By WhiskeyNovember

Are the MD-90's pylon flaps EVER cycled?

So, as you may know, the MD-90 has movable control surfaces on the engine pylons called pylon flaps:

http://i.imgur.com/mBxe13M.jpg

http://i.imgur.com/l5vS5MI.jpg

When the MD-90 was...

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