Picture the scene:
65hrs PPL renting the flying school PA28 140 Cherokee (pretty clapped and underpowered) to take No. 1 daughter and school chum for local flight over said chum's house.
On climb out, sudden rushing wind noise, looked up to see roof latch on door was undone.
Nevermind says I to No 1 daughter undo the door and give it a good slam........
Interesting flight home.....
Only the names have been changed to prtect the innocent.
Still flying after all these years.