### Instruction:

Extract the cause and effect entities from the following sentence:
When operationally advantageous and mutually agreed upon, flight deck separation is authorized by ATC

### Assistant:

KEYWORD: When
CAUSE_1: operationally advantageous
CAUSE_2: mutually agreed upon
AND: and
VARIABLE: flight deck separation
CONDITION: mutually agreed upon
EFFECT_1: flight deck separation is authorized by ATC

