Hi everyone i have noticed this before, i am currently on a transoceanic flight to OMAA from CYYZ and im at FL348 cruising at MACH 0.83 now i wanted to slow down so as to arrive on schedule but when i input the new speed into the FMC, nothing happens, the autothrottle does not move. i am using fsx steam, i have been using pmdg for a while now and this is the first significant issue i have had, if anyone has a solution i would really appreciate it. 

 

Joe Remer

 

 

but when i input the new speed into the FMC, nothing happens, the autothrottle does not move.

 

Input the value on the CRZ page. Ensure you hit EXEC.

 

Alternatively, press the middle of the speed wheel on the MCP to enter SPD INTV. Override that way.