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Thread: 737 with pulse engine? YR-BAG

  1. #1
    Passenger
    Join Date
    Jun 2018
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    1

    737 with pulse engine? YR-BAG

    Today I noted the right engine of B737-500 YR-BAG leaving an unusual "pulse" contrail as it crossed Holland.
    I have never seen this type of behaviour before and can only guess that it is some sort of governing fault with that particular engine.
    Anyone else seen this?
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  2. #2
    First officer
    Join Date
    Apr 2013
    Location
    SE Qld, Australia
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    473
    Quote Originally Posted by BigAl View Post
    Today I noted the right engine of B737-500 YR-BAG leaving an unusual "pulse" contrail as it crossed Holland.
    I have never seen this type of behaviour before and can only guess that it is some sort of governing fault with that particular engine.
    Anyone else seen this?
    I've seen it a couple of times but I have no theory as to what causes it.

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