Sorry to go on a tangent, but I figure there's many of us interested in this, too: one of those last 2 flying Lancasters is based in Hamilton, Ontario, just an hour or so east of London. As the historic tour in the UK this past summer went on, it developed some engine troubles that made it to the news media. What didn't get so widely reported was that the mechanics were able to find spares in the UK and the Lanc made it back to Canada safely.