What DOES NOT belong to the ARROW acronym for aircraft documents?

The ARROW acronym is used to help pilots remember the essential documents that must be on board an aircraft when it is in operation. Each letter in the acronym corresponds to a specific type of document required for legal flight operations.

The 'A' represents the Airworthiness Certificate, which confirms that the aircraft meets safety standards. The 'R' stands for Registration, which shows that the aircraft is registered with the appropriate aviation authority. The 'R' also indicates the responsibility of keeping the aircraft’s details up to date in the registry. The 'O' is for the Operating Handbook (often referred to as the POH - Pilot Operating Handbook), which provides critical operational information for safely navigating and managing the aircraft. The 'W' signifies the Weight and Balance documentation, which is crucial for ensuring the aircraft is loaded within its safe operating limits.

The Pilot Logbook, while important for tracking flight time and pilot qualifications, is not required to be carried on the aircraft. It is primarily a record of a pilot’s flying experience and qualifications rather than a mandatory document for aircraft operation. Because of this distinction, it does not fit within the ARROW acronym, making it the correct answer for what does not belong.