Delta flight1651 of 01/02/2015, Minneapolis to LA. The Captain was locked out of the cockpit and the F/O landed the plane. Less than two months later we have another lock out, but with disasterous results. Did the incident of Flight 1651 not prompt the need to consider emergency access to cockpit.
Therefore in view of the pre-existing USA "always minimum two crew per cockpit" rule, in the above case was it actually the FO
plus an accompanying CC who became locked in the cockpit during flight?