All Engine Cruise

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

The cruise page is used to monitor and change cruise altitude and speed. Speed changes can be manually selected or automatically selected with the selection of other VNAV modes. Cruise climbs, cruise descents, and step climbs can be accomplished from the cruise page.

When using the economy mode, page data is based on operating at ECON SPD. Economy cruise speed is based on cost index. When the flight crew enters a selected speed, page data changes. When the FMC is in the engine out mode, the data changes to include the airplane capabilities with one engine inoperative. The long range cruise (LRC) mode calculates speeds to maximise airplane range.

Page Title - The page title displays active (ACT) or modified (MOD) cruise. Usually, the title contains ECON for economy cruise. Fixed speed, engine out, and long range cruise modify the title.

Page titles include:

  • CRZ CLB or CRZ DES - cruise climb or descent
  • ECON - speed based on cost index
  • ENG OUT - engine out mode selected
  • EO D/D - engine out drift down displayed when EO selected and the airplane altitude is above the maximum altitude for engine out performance
  • LIM SPD - based on an airplane configuration limiting speed
  • LRC - long range cruise selected
  • MCP SPD - speed intervention applied from the MCP
  • M.XXX - fixed Mach cruise speed
  • XXXKT - fixed CAS cruise speed

    • Fixed cruise speeds are for:

  • waypoint speed constraints
  • an altitude constraint associated with a speed constraint
  • a flight crew selected speed (SEL SPD).
    • CRZ ALT - Displays cruise altitude entered on PERF INIT page. Valid entries are: XXX, XXXX, XXXXX, OR FLXXX. Altitude displays in feet or flight level depending on the transition altitude. Changing the MCP altitude enters the new altitude in the scratchpad for entry. Entry creates a modification. When the modification is executed the page title changes to CRZ CLB or CRZ DES.
    ECON SPD - Displays target speed or Mach. Valid entries are CAS in knots entered as XXX or mach entered as .XX. MOD displays in the page title until the modification is erased or executed. A manually entered speed changes the line title to SEL SPD. ECON can be replaced with LRC or E/O by selecting the prompts.
    SAVINGS or PENALTY - With a flight plan modification pending (lateral and/or vertical), displays the calculated savings or penalty associated with the modification as compared to the current flight plan. Blank when the active cruise mode is displayed and no step altitude is displayed. When a step altitude is shown in 1R, displays the calculated penalty or savings realised by completing the step climb as displayed.
    FUEL AT Destination - Displays the calculated fuel at the destination airport. The calculation assumes that the indicated step climb will be made as planned and W/STEP is displayed after the fuel value. With a flight plan modification pending (lateral and/or vertical), displays the destination fuel calculated with the modification. W/MOD is displayed after the fuel value.
    ECON - Blank when ECON is the active speed mode. Displays the ECON prompt when any other speed mode is active. Push - when the ECON prompt is displayed, selects the ECON speed to the speed line and displays MOD in the page title. The modification can be executed or erased.
    WIND - Displays the current sensed wind. An estimated wind can be entered to improve step climb performance calculations. The line title changes to EST WIND when an estimate is entered. Deleting the estimated wind returns the display to ACTUAL WIND.
    ENG OUT - displays engine out cruise page.
    LRC -
  • displays long range cruise page
  • changes target speed to LRC speed

    • Pegasus | 11.42.23 | EO CRUISE>