Cabin altitude for Legacy 450 and 500

Embraer SA

AT THE 2017 Dubai Air Show in November, Embraer announced enhancements to its mid-size Legacy 450 and 500 business jets, including a revised cabin attitude of 5,800ft (1,768m). The Brazilian aircraft manufacturer says that the new lower cabin altitude will make them the best in their respective classes in this regard.

Embraer says the current maximum cabin altitude for the two aircraft is 6,000ft (1,828m) at an aircraft cruising altitude of 45,000ft (13,716m), representing a cabin differential pressure of 9.3psi (0.64 bars). This differential pressure will be increased to 9.73psi (0.67 bars), which the company says will reduce the cabin altitude to 5,800ft. It says the Legacy 450 and 500 environmental control systems will maintain a cabin altitude equivalent to sea level when the aircraft are flying below 27,050ft (8,245m).

Deliveries of new aircraft with the increased cabin differential pressure will begin in the first quarter on 2018 and an upgrade will also be available for existing aircraft in the global fleet. Nigel Pittaway