B777 Undifferentiated or Other Model
Flight Crew Air Transport Pilot (ATP)
Situational Awareness
Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural FAR
Flight Crew Took Evasive Action
Company Policy; Human Factors
Dispatch and flight crew failed to notice that PMDY was possibly no longer a suitable ETOPs alternate based on the information provided.
A B777 crew flew an oceanic flight with PMDY as an ETOPS alternate; but it was not legal because of inadequate weather information.