What is the standard response for altimeter checks in relation to known elevation during cockpit checks?

The correct answer regarding the standard response for altimeter checks in relation to known elevation during cockpit checks is that the altimeter must be within ±75 feet. This standard is established to ensure safety and accuracy for flight operations.

The rationale behind this specific range stems from the need for pilots to have a reliable reference for altitude, which is critical for navigation and for maintaining safe separation from terrain and other aircraft. A tolerance of ±75 feet provides a balance between acceptable operational performance and accounting for variances that may occur due to atmospheric conditions or instrument calibration.

By adhering to this standard, pilots can confidently assess their altitude above ground level, which is vital for safe takeoffs, landings, and in-flight maneuvers. This level of precision helps minimize the risk of altitude-related incidents.