What does the term "operational check" refer to in NATOPS procedures?

• A. Flying the aircraft in a test flight
• B. Verifying operational procedures in the cockpit
• C. The systematic verification of aircraft systems before flight
• D. Conducting maintenance checks on the runway

Answer: (C)

The term "operational check" in NATOPS procedures specifically refers to the systematic verification of aircraft systems before flight. This process is crucial for ensuring that all systems are functioning correctly and safely prior to taking the aircraft into operations. An operational check encompasses a variety of pre-flight inspections and functional tests to confirm that the aircraft is ready for safe operation, including checks on avionics, engines, fuel systems, and safety equipment. This thorough verification is vital to maintain operational readiness and pilot safety.

While options might mention activities related to the aircraft, such as conducting maintenance checks or verifying procedures, they do not encapsulate the comprehensive nature and intent of an operational check as well as systematic verification does. A well-defined operational check helps to prevent incidents during flight caused by undetected equipment malfunctions or systemic failures.