Engine Out Climb
Engine out VNAV climb guidance is displayed on the engine out climb page. The engine out climb page must be selected and executed by the flight crew. Engine out data is available with all engines operating. Engine out climb changes to engine out cruise at the top of climb.
The modified page displays engine out performance limitations. Manual entries are allowed. After the modification is executed VNAV gives single engine guidance in the climb.
CRZ ALT - Displays cruise altitude if less than MAX ALT. Displays MAX ALT if less than cruise altitude. Manual entry is allowed.
SPD - Displays engine out best gradient climb speed (EO SPD) when page first selected. Any valid speed can be entered. Valid entry is XXX for CAS. Valid entry is 0.XXX for Mach. Trailing zeros can be omitted. A manual entry changes the line heading to SEL SPD and may cause MAX ALT to change.
EO SPD - Resets command speed to best gradient speed and may cause MAX ALT to change. Blank when EO SPD is displayed on the speed line.
AT XXXXX - Displays next airspeed and/or altitude constraint at waypoint XXXXX. FMC commands the slower of constraint speed or performance speed. Constraints are entered on RTE LEGS page or are inserted as part of a SID. Delete here or on RTE LEGS page. Blank if no constraint exists.
ERROR - Displays altitude discrepancy and distance past waypoint where altitude will be reached. Blank if no error exists.
TRANS ALT - Transition altitude for origin airport contained in navigation database. FMC uses 18,000 feet if transition altitude is not available. Manually change transition altitude here or on DESCENT FORECAST page. Valid entries are XXX, XXXX, XXXXX, or FLXXX. Altitude information displayed on the CDU changes from altitudes to flight levels above the transition altitude.
MAX ALT - Lower of maximum altitude at engine out climb speed or cruise speed. Entry not allowed.
ALL ENG - Modifies page to display all engine (ALL ENG) performance data.
CLB DIR - Deletes all waypoint altitude constraints between the airplane altitude and the MCP altitude. FMC cruise altitude is not affected. Blank if no constraints exist.
The FMC puts the EO SID into the route as a modification if:
The modification can be executed or erased.