. . . and if you were 2/3 down the runway and still only doing 50% of Vs . . . ?
Do cables generally fail when you're on the runway and not moving the controls? My experience (of aeroplanes and cars) is that cables tend to fail when you move them. In the case of carb heat, if you're moving the carb heat lever it would almost certainly be a safe time for carb heat to be on, so I can see sense in Yorks' suggestion.
On a more general note about failures and noting them at pre-flight checks, I was doing a currency check (or was it a type conversion, I can't remember and it doesn't matter) with an ex-student of mine recently. We got to the holding point, checked the mags, and found no drop on the left mag. Taxied back in and took the aircraft directly to engineering.
Afterwards, someone said to my ex-student "you must be gutted, beautiful weather like this and you can't fly because the mag's broken."
"No," he replied. "Actually, I'm really pleased with myself. I always do those checks at the holding point, and nothing significant has ever happened. I'm really pleased that the first time something interesting happened, I noticed it!" Well done - exactly the right attitude.
FFF
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