KLM MD-11 - POS REF Page

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MD-11 Flight Crew Operations Manual

FMS -

Controls and Displays

FMS.30.93

POS REF Page

This page is accessed from the F-PLN INIT or REF INDEX page. It provides IRS

average comparative position data, FMC position and the RNP and ANP values

and allows manual updating of the FMC position.

The current FMC-calculated position is displayed in line 1. Pushing LSK 1L with

the SP empty freezes the LAT/LONG display (but not the position filters);

pushing it again unfreezes the display. An entry may be made into 1L (with a

waypoint, navaid, PBD or lat/long entry) at any time. Upon entry the field will be

considered frozen and the UPDATE* prompt will be displayed in 1R. Pushing the

update prompt will re-initialize the position filters and cause the updated filter

values to be displayed (unfrozen). Clearing the UPDATE* prompt displays again

the current FMC-calculated position (unfrozen) in 1L.

The POS REF page is exited by use of a mode key or the return prompt in 6R. The

return prompt in 6R will return the page to either the F-PLN INIT page or the REF

INDEX page, whichever page the IRS STATUS page was accessed from.

CHECK POSITION will appear on the ND when either of the following MCDU

scratch pad messages appear.

LB1-3-0119

October 02, 2006