B737 NG FMC. Ref to barometric setting for FPA V/B and V/S on DES page.
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B737 NG FMC. Ref to barometric setting for FPA V/B and V/S on DES page.
Scenario: setting a WPT and ALT on LSK 3R on DES page, you get the FPA V/B and V/S presented on LSK 4R.
Where does the FMC get the barometric pressure data from when calculating FPA, V/B and V/S as depicted on the DES page.
Is it from the forecast page, or the actual QNH setting on the PFD (or could it be referenced from STD?
Any reference to a Boeing manual would be highly appreciated.
Where does the FMC get the barometric pressure data from when calculating FPA, V/B and V/S as depicted on the DES page.
Is it from the forecast page, or the actual QNH setting on the PFD (or could it be referenced from STD?
Any reference to a Boeing manual would be highly appreciated.
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Got the answer with a little help from a friend.
The FMC reads the baro setting from the PFD of the pilot with FD set to master. As far as I can see there is no reference to this in the FCOM.
Thanks.
The FMC reads the baro setting from the PFD of the pilot with FD set to master. As far as I can see there is no reference to this in the FCOM.
Thanks.