Picked this up on FlyerTalk via Twitter, and has just been cross-posted to the Aust. Frequent Flyer Forums and to my twitter followers which should get it out further into the aviation community.

To help locate him, can you fill in the following blanks.

• How old his he?
• What is his name, and what nicknames he might respond to?
• Do you have a description of his shirt or pants he was last known to be wearing?
• Does he have any identifiable features or distinct items, such as scars, a distinctive carry-on bag, anything else which might help someone spot him in a crowd more easily?

The more information available, the better chances of finding your grandfather safe and sound. Good luck.