Item #: SCP-5666
Object Class: Safe
Laconic Containment Procedures: Build a roof over it and keep an open runway nearby.
Laconic Description: SCP-5666 is a crashed, inoperable plane that lets people fly it from within; the actual plane doesn't move, but the world seen outside the windows (SCP-5666-A) can be explored with the illusion that the plane is moving.
SCP-5666-A is (probably) a visual metaphor for the pilot's mind, with SCP-5666 itself being the mechanism of exploration. The problem is, SCP-5666 is broken. This leads to pilots forgetting things and having memory problems while inside SCP-5666.
Additional Context: A helper who is revealed to actually be the original Administrator, now elderly and suffering from dementia, remembers her identity and the true function of SCP-5666. She flies the plane away in an attempt to look into her own mind and figure out what's causing her dementia, not realizing both the plane and her mind are broken. What follows is a first person experience of her dementia-stricken mind, complete with fragments of memories, panic, confusion, and the appearance of angelic entities that appear to be consuming her memories. Whether these are actual anomalies or representations of the dementia process is never stated. In the end, she dies when "she isn't there anymore, as her mind flies into the sun, melting away."
SCP-5005 was an entry in the SCP-5000 Contest, where it won 6th place.