Sunday...wx lovely. Booked to fly at Welshpool, to get back in practice on these funny things with wings. The C152 is no longer there, the C172 was booked, and I've never flown a C150, and haven't flown f/w for two months. Decide to be old not bold, and say I want to go up with someone first. Fly with another PPL, three circuits, one go-around, a bit of assing around while they change runways as the sun's in everyone's eyes. I feel a bit out of practice and overloaded, but landings all OK, conditions ideal, say OK - even though I've had an odd feeling all morning that something's going to go wrong. Lovely day; I'll go look at my house and maybe Lake Vyrnwy. Wait ages on ground for other traffic, engine starts to sound funny. Carb ice on the ground, when it's this dry? Never happened before. I pull throttle to idle and engine stops dead. I stare at prop, think about lack of practice, funny feelings all morning, new aircraft for me - decide that's it, I'm not flying. Later get told it probably was carb ice; engine configuration of C150 different from 152, and very prone to it; get a lesson on Cessna engines and so on; very useful, and I think under the circumstances I made the right decision.
But it would have been a lovely day to go flying in the Welsh hills.