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GX_17_060
HPSOV
CLOSED
HPSOV
OPEN
FMU
HPSOV
CLOSED
HPSOV
OPEN
FMU
CH A
CH B
EEC
CH A
CH B
EEC
ENG
RUN
OFF OFF
R L
17-42 For Training Purposes Only
Sept 04
P I LOT T R A I N I N G GU I D E
POWER PLANT
ENGINE STARTING
AUTO START - GROUND
The normal start sequence is initiated automatically, with the ENGINE START switch
selected to AUTO, IGNITION switch selected to Normal (default), thrust levers IDLE
and the engine RUN switch to ON. The APU is the normal source of air during ground
start.
TOTAL FUEL (LBS) 292OO
146OO O 146OO
N2
FF (PPH)
OIL TEMP
OIL PRESS
1O.O
O
21
1O
START
ND
STAB
ITT
SYNC
DN DN DN
OUT
3O
GEAR
–TRIMS–
NL RUDDER NR
AIL
LWD RWD
7.2
NU
O.O
O
15
O
O
O.O
T/O
N1
SYNC
O.4
98.5 98.5
1.OO
1.55
TO
EPR
1.OO
1.55
15 15
L ENG SHUTDOWN
END
P P P
P
P P
P
P
FUEL
AUX
23°C
APU
23°C
TOTAL FUEL
292OOLBS
146OOLBS
AUX
OLBS
146OOLBS
FUEL USED
3OOLBS
LO PRESS
32°C 32°C
LO PRESS
P P P
P
P P
P
P P
P
FUEL
AUX
23°C
APU
23°C
TOTAL FUEL
292OOLBS
146OOLBS
AUX
OLBS
146OOLBS
FUEL USED
3OOLBS
LO PRESS
32°C
OLBS
32°C
LO PRESS
ENGINE
ENG START
IGNITION
ON
AUTO
L CRANK R CRANK
ENG
RUN
OFF OFF
L R
GX_17_061
Note:
The engine data quoted in this
example are approximate values.
BLEED / ANTI-ICE
APU
LP
AIR
COND
START
HP
L
OFF
LP
HP
R
OFF
43
PSI
43
PSI
No aft tank
on Global 5000
GLOBAL EXPRESS FUEL SYNOPTIC GLOBAL 5000 FUEL SYNOPTIC
For Training Purposes Only
Sept 04
17-43
P I LOT T R A I N I N G GU I D E
POWER PLANT
At approximately 15% N2, the ignition sequence occurs.
At approximately 15% N2 the igniters are turned on, at 20% fuel flow occurs and at
approximately 25% N2 light-off occurs.
NOTE
The engine data quoted in this example are approximate values.
TOTAL FUEL (LBS) 292OO
146OO O 146OO
N2
FF (PPH)
OIL TEMP
OIL PRESS
15.O
O
18
1O
START
ND
STAB
ITT
SYNC
DN DN DN
OUT
3O
GEAR
–TRIMS–
NL RUDDER NR
AIL
LWD RWD
7.2
NU
O.O
O
15
O
O
O.O
T/O
N1
SYNC
O.8
98.5 98.5
1.OO
1.55
TO
EPR
1.OO
1.55
15 15
L ENG SHUTDOWN
END
GX_17_062
IGN
Annunciation
I
G
N
TOTAL FUEL (LBS) 292OO
146OO O 146OO
N2
FF (PPH)
OIL TEMP
OIL PRESS
2O.2
O
28
18
START
ND
STAB
ITT
SYNC
DN DN DN
OUT
3O
GEAR
–TRIMS–
NL RUDDER NR
AIL
LWD RWD
7.2
NU
O.O
O
15
O
O
O.O
T/O
N1
SYNC
2.5
98.5 98.5
1.OO
1.65
TO
EPR
1.OO
1.65
15 26
L ENG SHUTDOWN
END
I
G
N
IGN
Annunciation
GX_17_063
17-44 For Training Purposes Only
Sept 04
P I LOT T R A I N I N G GU I D E
POWER PLANT
At approximately 42% N2, IGN off and at approximately 45% N2 START off (SAV
closed).
During an automatic start the EEC will perform all checks for starting anomalies. If a
fault is detected, (hot start, hung start, etc.) the EEC will abort the start. The crew can
stop the start sequence anytime by selecting the ENGINE RUN switch to OFF.
ROTOR BOW
If the BR710A-20 engine is to be started between 20 minutes and 5 hours after the
previous shutdown, there is a high potential for high core vibration during the next
start. This is known as “Rotor Bow”, which occurs due to differential cooling of the
high-pressure spool and subsequent distortions of the rotating assembly.
In all manual ground starts, the operator must carry out an Extended Dry Crank (EDC)
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