ATPL: An aeroplane should be equipped with a Mach trimmer, if:
Domanda 384, Principles of Flight - ATPL - Airline Transport Pilot license
| Stick force stability is independent of the airspeed and -altitude. |
| At transonic Mach numbers the aeroplane demonstrates unconventional elevator stick force characteristics. |
| At high airspeed and low altitude the aeroplane demonstrates unconventional elevator stick force characteristics. |
| Stick force per g strongly decreases at low Mach numbers. |
