Originally Posted by
First.officer
depending on the method of compliance, and device used in any Portable EFB set-up, it's damned near impossible to get AMMD (Airport Moving Map Display) approved with the likes of a portable EFB, say using AMC 20-25 as method of compliance, and then satisfying the ETSO-C165a....needs at least an external aerial I would suggest for the accuracy needed for a decent idea of position without any "furyness" or dilution of aircraft actual position. Installed EFB might be tad easier, although guessing that isn't an option fitted for the older 747-400's??.
Flew the 744 with retrofitted EFB with accurate moving map display.
Check other remarks about the conditions. Perhaps inside info. Still would be curious to know if BA has Airport Moving Map Display on all their aircraft.