Reply #3

.... failure to execute the mandatory checklist on loss of airspeed indication.

Also the the stall warning sounded unacknowledged some 70 times plus a lack of of handling experience, both in non-normal operations and manual flight. It states that the the senior copilot had last performed a manual landing over two months before the accident flight.

All they needed to do was manually maintain the pitch attitude and thrust setting in response to unreliable airspeed.