Final answer:
A flight crew member on call must report for duty within a company-specific time frame, often expected to show up on time and be prepared for their shifts, adhering to airline policies and communication protocols.
Step-by-step explanation:
The specific time a flight crew member on call must report for duty can vary by airline and is typically specified in the employee handbook or company policies. Generally, it's important for a crew member to show up on time and adhere to the schedule, being ready to show up to work every day for designated shifts unless there is a valid reason for absence. While the exact on-call reporting time isn't provided here, industry standards often require crew members to report within a reasonable time frame, potentially two hours, to ensure flight operations can proceed smoothly and safely. As with any job, following the protocol for reporting time off and understanding company-specific policies is essential.