Hi,
Originally Posted by HazelNuts39
At 14000 ft, 530 kt CAS, the Mach number is 1. Therefore the condition 'CAS higher than 530 kt without the Mach value exceeding 1' can only be true below 14000 ft (fundamental physics). I do not understand the addition of 'above 4000 ft.'
Maybe this system has a security under 4,000 ft for not dispalying an error and not stressing the crew at low altitude or something like that?
S~
Olivier