ORIGINAL: BarracudaHockey
ORIGINAL: spaceworm
Or, if the servo fails at WOT, then you are flying until the fuel runs out with no throttle control.[

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Three words
Optical Kill Switch
I have to agree with Barracuda......it's the primary reason I put one on my plane!
Oh and I am using an HS645 on my 71" slick (mainly cause I had one) and after 20 or so flights so far, zero issues to report