This is is about a material possession: a Cessna 172 with the registration number N1350Y. A pilot flying this aircraft would communicate with Air Traffic Control by referencing the last three digits of the N number using the NATO phonetic alphabet would be “Five Zero Yankee.”
Physical possessions are just things but there are certain physical possessions that are so intertwined with memory that having, using, or interacting with them is attached to certain feelings and memories. Art can have this impact such as viewing a painting that makes you think and feel something. Otherwise unimportant physical objects can also create this emotional reaction. The object itself is just a thing but it may be connected to an emotion or memory.
This is a deeply personal song that evokes all of these ideas. My father was in the aviation industry for his entire professional life and I inherited from him, and my son from me, an interest in aviation. The image of the aircraft flying into the sunset will forever be a memory I have of saying goodbye to him.