MD-11 Flight Crew Operations Manual
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Instrumentation and Navigation -
Description and Operation
Inst.10.18
Possible IRS source annunciations on the ND are as follows:
• IRS AUX (white) - on either F/O or Captain ND.
• IRS AUX (amber) - on both F/O and Captain NDs.
FMS Source Annunciation
When an alternate FMS source has been selected (Capt. on 2 or F/O on 1), and the
ND is in MAP or PLAN mode, the source is annunciated in amber in the top right
corner of the ND.
Possible FMS source annunciations on the ND are as follows:
• FMS1 on F/O ND.
• FMS2 on Capt. ND.
Weather Radar Failure
When both Receiver/Transmitters (R/T) are failed, WXR FAIL is shown in amber
(MAP, VOR, or APPR modes only). If an R/T is not failed, but the R/T range does
not agree with the pilot selected ECP map range, WXR RANGE DISAGREE is
shown in amber.
FMS Range Disagree
If the FMS map range disagrees with the pilot selected ECP map range, FMS
RANGE DISAGREE is shown in amber (MAP and PLAN modes only).
Map Full
If the crew selects a range for which there are a greater number of map symbols
to be displayed than can be displayed, DECLUTTER or REDUCE RANGE is
shown in amber (MAP and PLAN modes only).
Source Test Indications
Source test mode data is displayed as follows:
• If the aircraft is on the ground the associated symbology will be
displayed but flagged as not valid.
• If the aircraft is not on the ground, the data is considered not valid and the
symbology will be removed and flagged.
November 16, 2009
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