B777 Undifferentiated or Other Model
Flight Crew Air Transport Pilot (ATP)
Communication Breakdown; Workload
Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural FAR
General None Reported / Taken
Chart Or Publication; Procedure; Company Policy
Dispatch and flight crew failed to notice that ZZZZ was no longer a suitable ETOPS alternate based on the information provided.After flight during company audit. Multiple flights; multiple companies.
NOTAM indicated that the automated weather was unable to provide altimeter visibility and density. ZZZZ SVC AUTOMATED WEATHER BROADCAST SYSTEM VIS; ALT AND DENSITY ALT NOT AVBL.Nowhere does it say the automated weather was the only weather source on the island. I have personally been to Midway and know that there are airport personnel out there. I would like to believe that one of those people can actually read a barometer; anemometer and tell me what the visibility is; when I contact them on 126.2 per the Pacific 1/2 chart prior to the approach. 'The local altimeter is required per the commercial chart notes for all approaches into ZZZZ (Use local altimeter setting; if not received; procedure not authorized); thereby rendering the approaches useless. Without any useable approaches; ZZZZ could not be applied as an alternate per our Ops Specs.' If the approach is unauthorized; the NOTAM should state 'APPROACH UNAUTHORIZED' not some ambiguous comment about an automated device.
A B777 crew flew an oceanic flight with ZZZZ as an ETOPS alternate; but it was not legal because of inadequate weather information.