In what type of operation, not regulated by 14 CFR part 119, may a commercial pilot act as pilot in command and receive compensation for services?

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A pilot in command (PIC) of a civil aircraft may not allow any object to be dropped from that aircraft in flight

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To act as pilot in command of an aircraft operated under 14 CFR part 91, a commercial pilot must have satisfactorily accomplished a flight review or completed a proficiency check within the preceding

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