MD-11 Flight Crew Operations Manual
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FMS -
Controls and Displays
FMS.30.75
AUTO THRUST LIMITS Page
Alternate Takeoff Thrust Limit
When the derated Alternate Takeoff (ALT T/O) Thrust option is enabled, the pilot
may switch between the ALT T/O thrust limit and the T/O thrust limit at anytime
prior to takeoff by selecting LSK 3R. If ALT T/O is the ACTIVE thrust limit and
a windshear condition occurs, the “Maximum Takeoff (T/O)” thrust limit
automatically becomes ACTIVE.
Manual OverrideThrust Limit
A pilot can manually enter and activate a takeoff thrust limit prior to 70% thrust
being reached by entering an N1 into 4R (OVERRIDE). When an OVRD T/O
thrust limit is activated all other available takeoff thrust limits are no longer
displayed on the page. The OVRD T/O thrust limit can be deactivated by clearing
(CLR) the OVRD T/O thrust limit in 1L or selecting any non-takeoff thrust limit.
Additionally, the OVRD T/O thrust limit may be deactivated by inserting an
ACARS uplinked FLEX temperature. Deactivating the OVRD T/O entry causes
T/O to become activated and all other available takeoff thrust limits are displayed.
If the ACTIVE thrust limit is the OVRD T/O, an automatic deselection will not
occur due to detection of a windshear situation.
CRZ and MCT thrust limits are always ARMED during the preflight/takeoff
portions of flight. CRZ, the ARMED climb and MCT thrust limits are allowed to
be activated on the ground for engine runup purposes. Safeguards are provided to
prevent these thrust limits from remaining as ACTIVE during takeoff.
LB1-3-0146
1L
2L
3L
4L
5L
6L
1R
2R
3R
4R
6R
5R
September 03, 2007
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