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Displays synchronized mode as
selected by the FMS.
If autothrottle is engaged SYNC
will appear under N1 and N2
whichever is controlling.
EPR Rating Readout
Displays the EPR numerical
target for the mode selected.
EPR Rating "V" Bug
Displays the target EPR
for the mode selected.
EPR Readout
Displays the current
EPR value.
EPR "T" Readout Bug
Displays the current
EPR command.
Engine Control Mode Box
Displayed when in EPR
control mode.
EPR Sweep Arm
Displays the current
EPR readout.
the indications will be cyan.
1.54
EPR
1.65
CRZ
SYNC
1.54
1.65
Reduced Thrust Takeoff
Mode ( )
POWER PLANT
REV 41, Jul 08, 2004 Flight Crew Operating Manual
CSP 700−6
Volume 2
18−10−17
ENGINE INDICATIONS (CONT'D)
EPR Rating Mode Selection
EPR rating mode is automatically or manually set through the FMS PERF pages on the FMS.
The following modes are available:
· TAKEOFF
(TO) Rating − This rating is always set whenever the airplane is on the ground
and the thrust is advanced towards takeoff.
Operation at TO rating is limited to a maximum
of 5 minutes. The TO rating will remain until all of the following conditions are met:
− The airplane is ³ 400 feet above the runway.
− The flaps/slats are retracted.
− The pilot retards the thrust lever (Throttle Lever Angle (TLA) < 37°). This condition does
not apply when autothrottle is engaged.
− If AFCS mode is goaround
or windshear, the rating is automatically set to TO
− If in descent and the flaps/slats or landing gear are extended, the rating will transition
from cruise (CRZ) to TO.
· Reduced Thrust Takeoff
(FLX) Rating − The FLX mode is permissible when airplane weight
and runway conditions are such that full TO rating is not required. FLX thrust is
implemented by the use of an assumed temperature higher than ambient day temperature
and is subject to the following:
− The use of FLX thrust is at the pilot’s discretion.
− When carrying out a FLEX takeoff,
the pilot can select TO if required.
− Flex thrust does not result in any loss of function, failure warnings or takeoff
configuration warnings.
− 75% of full rated thrust is used on all takeoffs.
· Climb (CLB) Rating − After transition from TO or FLX to climb, the engine rating will stay in
CLB until reaching the cruise altitude. After reaching initial cruise altitude, the rating will go
back to CLB if a new climb is performed (step climb).
· Cruise (CRZ) Rating − The rating will transition from CLB to CRZ after reaching within 200 ft
of the Top Of Climb (TOC) altitude and the throttles have been retarded to an angle
corresponding to maximum CRZ thrust. The rating will remain in CRZ as the airplane
descends, until flaps/slats or gear are selected down, at which point the rating will return to
TO.
· Maximum Continuous Thrust (MCT) − This rating is valid when an engine is failed, the rating
mode will transition out of TO and into MCT. The rating will remain at MCT in the engine out
condition, as long as the twin engine rating would have been CLB or CRZ.
· Manual Engine Rating (MAN) − Any rating but FLX can be selected on the FMS RATING
Select page. This freezes the rating type.
SYNC Mode Selection
The engine synchronization (SYNC) function is selected automatically by the autothrottle system
(if engaged), or manually via the FMS. SYNC system will compare engine speeds and compute a
trim value to match the two engine speeds. SYNC mode may be manually selected by the crew for
takeoff
below 400 feet, but is inhibited in the automatic mode below 400 feet. N1 shaft speed, N2
shaft speed or EPR mode can be synchronized.
POWER PLANT
Flight Crew Operating Manual REV 41, Jul 08, 2004
CSP 700−6
Volume 2
18−10−18
ENGINE INDICATIONS (CONT'D)
FMS Selection (EPR)
To select EPR ratings on the FMS proceed as follows:
GF1810_028
1 Select PERF function key a.nd go to page 2/2 of the PERF INDEX.
2 Select THRUST MGT line s.elect key.
3 Select applicable OR line select key on RATING line and set as required.
4 To select SYNC mode, select OR line select key on SYNC line and set as required.
FPL
KICT 998/02 + 47
ORIGIN DIST/ETE GS
MEM 01 + 06
104° 392NM
VUZ 00 + 29
115° 174NM
PATTERN FPL SEL
K I CT − K O R L
@ 359
PERF INDEX 2/2
　
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