On my return flight to Manchester from Amsterdam I had just levelled off at FL110. Still on auto-pilot I went to map view as forgot the frequency for the 06R ILS, whilst making a note of it there was a ping or something similar. My immediate thought was that I had allowed the aircraft to descend below FL100 still at 280kts and had just been warned of a penalty as I had read from Dave somewhere that you get this type of warning when you do wrong. !!
On checking my altimeter I was still at the correct height, checked landing lights, they were off. Again about three minutes later I got another ping followed by another some time later.
That was it, I was already about to abort the flight but then decided to continue and checked and double checked everything I did but still a ping!! I was getting worried, very worried, no Captaincy for me after this!! :sad:
Then relief........I found out what was causing it................The bl**dy mobile phone telling me it was down on battery, it was sat next to the speaker!!!!

..........That's it........it now stays outa the cockpit!!
I used to be an optimist but with age I am now a grumpy old pessimist.