What does the letter "R" in ARROW refer to?

The letter "R" in ARROW refers to the Registration Certificate. This acronym is commonly used to help pilots remember the essential documents that must be aboard an aircraft. The Registration Certificate is a vital part of aircraft documentation, serving as proof that the aircraft has been registered with the appropriate aviation authority. It includes important details such as the aircraft's manufacturer, model, and serial number, along with the owner's information.

Having the Registration Certificate on board is legally required for a pilot to operate the aircraft. It demonstrates that the aircraft meets all regulatory requirements and is accountable to the jurisdiction that governs its use. Understanding the significance of the Registration Certificate helps pilots ensure compliance with aviation laws and maintain safety standards.