Personally I am disappointed with this TAIC report. The QRH clearly stated that if either of the gear indicating systems showed the gear to be down and locked then it was down and locked. Given that that is what the manufacturer had to say on the matter, in writing, in a critical operational document (the QRH) it should have been good enough to hang your hat on. I'm all for applying common sense when there is genuine ambiguity but I don't see it applying in this case.