How do airliner passenger planes get forgotten in lost and found? Doesn't someone have to do reports on them? Their maintenance records for example?

with all the internet ability to research the owners or airliners... they have failed to figure out who owns these planes. Even though they know the registration numbers. That is stupid.

The operators of Kuala Lumpur International Airport (KLIA) have placed a bizarre advertisement in a Malaysian newspaper seeking the owners of three 747-200F aircraft apparently abandoned there.

"If you fail to collect the aircraft within 14 days of the date of this notice, we reserve the right to sell or otherwise dispose of the aircraft" under Malaysian regulations, said the ad which ran in Monday's edition of The Star.

http://www.msn.com/en-us/news/world/to-whom-it-may-concern-please-claim-your-boeing-747s/ar-AAga0gU
http://www.cnn.com/2015/12/08/aviation/malaysia-aviation-airport-abandoned-aircraft/index.html