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maximus610
6th Jan 2018, 12:59
What are the differences between these cockpit calls?

RAT 5
6th Jan 2018, 15:24
"Set" e.g. PF to PNF "set HDG 250." PM will dial in 250 degrees. It might not do anything.

"Select" e.g. PF to PNF, "select HDG SEL." Now the AFDS navigation/lateral mode is controlled by the HDG bug.

"Engage." e.g. PF to PNF, "engage autopilot A or 1."

Just one interpretation. Some SOP's might use the terminology slightly differently.