Well I suppose you could say they are all unexpected, but this one particularly so.
I had found a failed plug on my last attempt to fly so had ordered a couple of spares and fitted one to the V5.
Took off about 5:20pm and was expecting to have an hour and a half flight, lovely conditions. Had just fitted a brand new spark plug.About half way around felt a couple of little mis-fires, then a couple more. Thought I would go to max revs to gain more height, I was at around 1000 feet.Lots of misfiring up to max revs then 1 second later silence (To put in aviation terms the donkey stopped). This sounds terminal I thought, gave it one pull on the starter but nothing. I was near the river Severn so middle of nowhere, looked around for a farm house with at least a car outside, spotted one and a suitable field opposite. Adjusted to slow trims for max glide distance but still had loads of time to descend, a little S turn to get into the field safely and I was down.Folded the wing up then went and spoke to the farm occupants. Initially they were up for giving me a lift but then decided with the late hour the animals had to be fed before dark. No hassle, friendly people so I called my mate Geoff and he came and rescued me.
I am guessing the new plug has failed, I will be investigating later.Now there is a tale for round the camp fire in the future.