Same thing in a C150 many years ago... the first time i'd flown a 150. Flew out for lunch, but on the trip home, the thing left the runway all right, but just wouldnt climb. The 500 foot hill a mile off the end of the runway got awfully close real fast, until I realised I had taken off with full flap on.
Bled that up slowly, while turning to dodge the hill, and eventually got the poor little cessna to climb..
A different day, this time in a 172.
After landing, discovered that it was almost impossible to steer accurately, and had a terrible time trying to taxi off the runway. My astute copilot was the one to notice I had the parking brake on.
Somehow, I'd managed to TAKE OFF with the parking brake on, and hadnt noticed that.... but ever since that day, a check of the brake handle has been part of my line-up checks!
