I did not know that the bus updates the temp and hence N1. We don't have that feature on the 737, so we would end up with wrong N1 setting if we touch nothing and temp goes up. Of course if you chg the OAT in the box we can accept up to our assumed temp. But we have to do that manually and thereby delete our TO perf.
Originally Posted by
Goldenrivett
@ president
I think you are confused.
Our FADECs sense the actual OAT and adjust the target N1 accordingly. There is no need to change the assumed temperature.
If your FADECs require you to enter the actual OAT in order to match the reduced thrust you'd get at the assumed temperature - then do it.
The OAT may change, but your calculated assumed temperature limit won't.