What is the altitude callout requirement for the PM during climbs and descents?

The correct altitude callout requirement during climbs and descents is set at 1,000 feet. This means that as the aircraft approaches a change in altitude, the pilot monitoring (PM) is responsible for announcing this change at the 1,000-foot marker.

This callout is essential for maintaining situational awareness and ensuring that both pilots are aligned on the aircraft's altitude during critical phases of flight. By having the PM call out the altitude at 1,000 feet, it serves as a reminder to the flying pilot (PF) to prepare for any necessary adjustments or checks, such as leveling off, preparing for approach, or managing the aircraft's performance as dictated by the flight plan.

Such precision reinforces standard operating procedures, which are crucial in aviation for ensuring a high level of safety and minimizing risks during climactic phases of flight. Therefore, this callout requirement not only emphasizes effective communication between the flight crew but also minimizes the potential for altitude deviations.