My wife flew from SEA-LHR and back on Pan Am in December 1988. She was over there when the Lockerbie terrorist attack occurred. She earned something like 11,000 miles total in Pan Am Worldpass.

I saw on Flyertalk about two years ago, that most of the Pan Am FF accounts got merged into Delta's FF program. I called up Delta and said is there anything I can do with these old Pan Am miles. They said to fax in the old statement and they would transfer her miles to her Delta account. Two weeks later, she had 19,000 more points in her Delta account. There must have been some kind of bonus transfer added. Sometimes it pays to ask.