My torque wrench let go on a 737 flap track fitting last Thursday

I was torquing down a nut on a flap track fitting on a 737 out at Oakland and the wrench just clicked way too early. Felt wrong so I checked it against the calibration stand in the shop and it was reading 40 foot pounds when I had it set for 80. That could have been a real bad day if I hadnt caught it. Now I check all my torque wrenches against that stand first thing every Monday morning before I use them. Has anyone else ever had a torque wrench drift on them like that without dropping it or anything?

2 comments

2 Comments

theaw6525d ago

Could be a temperature thing. Those calibration stands are usually in a climate controlled shop but your wrench was sitting in an unheated hangar all night before you used it that morning at Oakland.

the_jade25d ago

Blame my cold wrench for that one @theaw65, guess I should've warmed it up with my coffee.