Engine Out Cruise

Engine Out Cruise Performance Initialisation Route Climbs Cruise Descent Direct Intercept Legs Departures and Arrivals Hold Progress Fix

Engine out VNAV cruise guidance is displayed on the engine out cruise page. Engine out data is also available with both engines operating.

The initial page data includes engine out performance limitations. Manual entries are allowed. When above the maximum engine out cruise altitude, VNAV calculates engine out guidance for drift down (D/D). The engine out drift down page changes to the engine out cruise page when reaching the engine out cruise attitude. Subsequent engine out cruise climb or descent is accomplished the same as two engine cruise climb or descent.

As the airplane gross weight decreases, maximum altitude increases. A step climb may be possible under these conditions.

The example is based on a cruise altitude above the maximum engine out altitude.

Page Title

  • Displays ACT ENG OUT CRZ D/D (for this example, airplane is above MAX altitude)
  • Displays ACT ENG OUT CRZ when in level cruise flight at or below the MAX altitude
  • Displays ACT ENG OUT CRZ CLB or ACT ENG OUT CRZ DES during engine out cruise climbs or descents and the airplane is below the engine out maximum altitude
    • CRZ ALT - Displays altitude from D/DOWN ALT line when current CRZ ALT above MAX ALT. Manual entry of an altitude above maximum engine out altitude results in the scratchpad message, MAX ALT FLXXX. Valid entries are the same as all engine cruise page. When below the MAX ALT, entry of a different altitude results in the display of the ENG OUT CRZ CLB or ENG OUT CRZ DES page.
    E/O SPD - Displays the engine out speed. The displayed speed can not be changed.During the drift down the E/O SPD is the minimum drag speed. After level off the E/O SPD speed changes to the single engine long range cruise speed.
    FUEL AT - Displays the calculated fuel at the destination airport based on single engine performance.
    TO Cruise Altitude - Display the time and distance to the cruise altitude based on the displayed CRZ ALT, E/O SPD and maximum continuous thrust.
    D/DOWN ALT - Displays the cruise altitude that will be maintainable after the drift down rounded to the next lower 100 foot increment.
    MAX ALT - displays the maximum cruise altitude based on current gross weight, and engine out LRC speed.
    ALL ENG - displays the modified all engine cruise page.

    Pegasus | 11.42.28 | Long Range Cruise>