Slightly off topic but a highly relevant celebration. It was a beautiful cool blue sky day with little wind everywhere in the UK. Four pilots including me decided we should celebrate 100 years of powered flight, so we each flew a Piper PA28 in a formation display in West Oxfordshire that morning. In the afternoon, two of us flew 2-ship formations with some passengers and then that night we two flew again, although rather obviously not in formation. A lot of pilots in the UK were airborne that day.
