20ft from a mid air. My fault, student pilot, head down in the cockpit on XC leg. Looked up to see a 172 go over my head on a direct 90 degree path coming in from the channel. I learnt to look out after that.
Pulled lean cut rather than carb heat when switching from Warrior to Robin. Don't know who got a bigger shock - me or the instructor.
Inadvertant spiral dive, solo student. I learnt to do them deliberately after that.
