Second time this has happened but after flight when handling the drone (still on) drone makes funny noise. Hard to explain but sounds like a horn that goes off three times. Sounds angry.

Cannot find reference to it in manual. What am I doing wrong? Drone is preforming flawlessly. More impressed everyday with this MA2

A video of your issue with the strange sounding might help to analyse.

Hi, PAYBACK. Sorry to read about your experience. To help you further, it is suggested to post a sample video of the issue and other details about it. Kindly keep us updated. Thanks!