Uncontrolled tool? Cobblers! Look at any helo aircrew - do all the pens / pencils / chinagraphs etc also count as 'uncontrolled tools'? If they did then virtually every mil helo would be grounded as a result! Actually using a Gerber on an aircraft or taking a spanner on board - yes, uncontrolled tool. Aircrew torch? My issue (rubbish) one wasn't an uncontrolled tool, so neither is my own Petzl head torch which, incidentally, runs off 3 AAA batteries and is what I use now.
Louis