Ostensibly to check the crew’s ability to handle an emergency–the check pilot with the status of a passenger and not to touch the flight controls –pulled the circuit breaker on the commercial Delhi-Mumbai flight. Instantly the autopilot tripped and the flight director disappeared. The pilot landed the plane manually, albeit with a higher-than-normal descent rate. The EGPWS warning system was not engaged. An internal investigation is apparently underway, but one wonders why the name of the pilot in question has not been made public.
Putting all the passengers aboard a commercial liner in danger is not something that should be swept under a rug.