# Engines

**URL:** <https://discussions.flightaware.com/t/engines/18126>\
**Category:** General\
**Created:** [March 6, 2016, 8:54pm UTC](https://discussions.flightaware.com/t/engines/18126 "2016-03-06T20:54:48Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![pauco56](https://avatars.discourse-cdn.com/v4/letter/p/ed8c4c/32.png) [@pauco56](https://discussions.flightaware.com/u/pauco56)\
**Post date:** [March 6, 2016, 8:54pm UTC](https://discussions.flightaware.com/t/engines/18126/1 "2016-03-06T20:54:48Z")

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Do some large 4 engine aircraft like a 747 at times shut down an engine in mid flight? I saw what I believe was Qantas 7554 fly over and looked as though it only had three engines in use. Starboard side I could see two distinct contrails but on the port side I could only see one.

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**Author:** ![Champdriver](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/champdriver/32/93471_2.png) [@Champdriver](https://discussions.flightaware.com/u/Champdriver)\
**Post date:** [March 7, 2016, 12:57am UTC](https://discussions.flightaware.com/t/engines/18126/2 "2016-03-07T00:57:43Z")

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No, it only looked that way from your perspective.