MD-11 Flight Crew Operations Manual
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FMS -
Controls and Displays
FMS.30.114
If the NAV RAD* prompt is displayed, MCDU STANDBY operation is available
at any time. Pushing 1R activates MCDU STANDBY operation and causes the
display to change to the STANDBY NAV/RAD page. During normal flight, the
MCDU is continually updating the STANDBY NAV/RAD page to reflect the
onside FMC radio tuning. Thus, on entering the STANDBY mode, the MCDU is
already initialized with the current tuning data. If STANDBY NAV/RAD is
selected after the onside FMC has completed an automatic reset, then the pilot
must retune the radios. MCDU3 will display F-PLN* in lieu of NAV/RAD* and
will display the STANDBY F-PLN page upon selection. If the MENU page is
accessed during STANDBY operation, the NAV/RAD* prompt is replaced by an
ACTIVE prompt in 1R. The pilot may return to the active subsystem by pushing
the LSK adjacent to the active subsystem, or by pushing 6R. When returning to
the FMC1 or FMC2, the MCDU display last shown before going to the MENU
page reappears. If both FMCs are inoperative and FMC1 and FMC2 become
operable, the A/C STATUS page is accessed when returning to normal FMS
operation. MCDU3 will provide an EXIT* prompt in line 2R which can be used
to deactivate the STANDBY mode on MCDU3. TIMEOUT-RESELECT appears
when the MCDU cannot talk with the FMC and is cleared only by the CLR key
(or MCDU begins talking with the FMC). If an FMC long term software reset
(TIMEOUT) occurs, the onside ND MAP/PLAN modes show MAP FAIL/NO
PLAN MODE. The onside MCDU shows the MENU page,
TIMEOUT-RESELECT in the SP, and no FMC prompt. The FMCs will try to
resynch and the good FMC will display PLEASE WAIT in the SP. Resynch
should take no more than 40 seconds. To access VOR, ILS, or ADF, during this
time, the pilot must select the STANDBY/NAV RAD* prompt in the MENU page
(disables thrust limits and GW data).
October 02, 2006
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