Currently on QF131 that was supposed to go MEL->AKL today. Unfortunately the auxiliary APU failed just after take off and we spent a while undertaking circular turns to burn off fuel and then headed to Sydney for a check with the engineers (along with a few more looping turns and despite some highly polite requests no barrel roles).
Currently sitting at the gate whilst the engineers prod the plane and see if it jumps. Will be interesting to see how this goes.
(Also, nil bubbles in J - just sparkling!). Interestingly enough this is my second APU failure today. :/