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-   -   B777 engine static ports (https://www.pprune.org/tech-log/623083-b777-engine-static-ports.html)

aslan1982 1st Jul 2019 12:21
B777 engine static ports
 
Hi guys
Can anyone explain what the static ports either side of the engine cowling are used for
thanks

tdracer 1st Jul 2019 18:11
Originally Posted by aslan1982 (Post 10506920)
Hi guys
Can anyone explain what the static ports either side of the engine cowling are used for
thanks
Ambient pressure indications to the FADEC. Pamb from the engine is compared to Pamb from the aircraft - if they agree within a tolerance the FADEC will use the aircraft (so that when everything is working normally, all the systems are using the same Pamb). However is the engine Pamb indication is significantly different relative to the aircraft values, the FADEC will use the engine sensed value to protect engine to engine isolation.

aslan1982 1st Jul 2019 18:35
Originally Posted by tdracer (Post 10507145)
Ambient pressure indications to the FADEC. Pamb from the engine is compared to Pamb from the aircraft - if they agree within a tolerance the FADEC will use the aircraft (so that when everything is working normally, all the systems are using the same Pamb). However is the engine Pamb indication is significantly different relative to the aircraft values, the FADEC will use the engine sensed value to protect engine to engine isolation.
thank you very much

wiggy 2nd Jul 2019 06:45
Likewise, thanks for the details...


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