HMS President, previously known as HMS Saxifrage, a WW1 Q Ship, is under threat. I know she's a ship, not an aircraft, but we held our London meetings on her for many years - and we're attached to the old girl! The charity that owns her didn't receive any lottery funding in the last round of awards - and unless something is done before the end of 2016 she may well end her days in the scrapyard. This would be beyond sad.

Update, March 2022: she is currently at Chatham; there are plans to restore her and return her to the Thames.