(c)
Entire routings may be selected from the navigation data base by entry of a company route number into the scratch pad, then pressing line select key 2L. 1) When the company route number has been entered into the RTE
PAGE, an ACTIVATE prompt will appear on the display. Pressing line select key 6R then the EXEC key activates the displayed route.
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(d) Press the LEGS key on the CDU to display the RTE LEGS page. The RTE LEGS display provides more detailed information for each segment connecting the waypoints. A complete list of waypoints is displayed with leg direction (course or heading) between the waypoints. 1) A DATA page select prompt is provided to enter and review
additional leg data.
2) The RTE DATA page acts as an extension of the RTE LEGS function. It provides continuously updated information on the predicted arrival time at any waypoint in the flight plan route. In addition, this page provides a place to enter forcast winds at various waypoints. A LEGS page select prompt is provided for return to the RTE LEGS page.
(e) Manual Route Entry
1) The operator can use knowledge of the intended route to directly enter origin and destination airports. The origin and destination airports can be entered by the keyboard or the DEP/ARR function can be utilized, to select and automatically transfer this information into the route.
2) Once the operator has entered an airport for the origin and destination, the remainder of the lateral plan can be entered. When the route waypoints are entered, the FMC searches its navigation data base, to confirm the waypoints existence. The FMCS will accept any route information, providing it is also available from the FMC navigation data base.
(5) Performance Initialization
(a)
The performance pages can be accessed from the active route (ACT RTE) pages, or accessed by pressing the INIT/REF key and line selecting 3L PERF.
(b)
The PERF INIT page provides the means to enter airplane and atmospheric parameters. The FMCS requires these parameters to compute its vertical profile targets.
(c)
The required entries for this page are: GROSS WT/ZFW, ISA DEV/T/C OAT and CRZ ALT.
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(d)
Only one entry of either GROSS WT or ZFW is accepted at any time. Entry of one causes the system to calculate the other. The same is true of ISA DEV and T/C OAT. However, an entry of CRZ ALT is required.
(e)
Once the required data has been entered, the operator may exit
the page or continue to enter additional or revised data.Takeoff Reference Initialization
(a)
The TAKEOFF REF page can be accessed from the PERF INIT page or from the INDEX page.
(b)
On airplanes with update 4 software and on, there are 2 TAKEOFF REF pages.
(c)
The TAKEOFF REF page provides a set of references for takeoff condition data.
(d)
If the airplane does not have an aspirated temperature probe, outside air temperature (OAT) must be manually entered.
(e)
The FMCS provides takeoff thrust targets for full-rated takeoffs, and reduced thrust takeoffs. For reduced thrust takeoffs, an assumed temperature higher than the current OAT must be entered into the CDU. The assumed temperature is entered into the SEL TEMP data line on the TAKEOFF REF page.
NOTE:____Do not change the TAKEOFF REF page. If you made changes, remove the changes. Make sure there are no fixed derates selected. Make sure the SEL TEMP field on pages 1/2 and 2/2 is empty. Changes to the TAKEOFF REF pages can cause a lower thrust at takeoff than the flight crew is planning for.
(f)
The calculated takeoff speeds for V1, VR and V2 may be entered for ready reference.
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