Autopilot uncommanded disconnect - certification requirements.
Hope someone can help. I was flying my 737 NG in max rate mode (trying to meet an ATC restriction) ...was at least 6,000 feet below max cruise alt wings level and still above the amber band (start of min manoeuvre speed) when the autopilot disconnected and the aircraft pitched significantly nose down. What are the certification requirements of an autopilot in this regime....the engineers are just saying tested OK nothing wrong with it.