The Boeing 737 is termed as the best-selling aircraft in the world and it has a world-class fuel system. Do you think that you understand the fuel system and can detect if it has any problems or when it is as it should be? If you just said yes then take up the quiz below and get to be sure.
The reverser is commanded to stow, but the reverser has not yet stowed. It will extinguish after 10 seconds if everything is OK (if there is a fault on the reverser system, the light will stay on).
That the reverser has been used
That you have to deploy REVERSER
That you have to retract the Reverser
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With the EEC switch ON, the EEC has automatically switched into soft alternate mode.
With the EEC switch ON, the EEC has automatically switched into cutoff mode.
With the EEC switch ON, the HDMU has automatically switched into soft alternate mode
Alternate malfunction accours
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The Center tank
No 1 and no 2 tanks (main tanks)
Only no 1 main tank
Only no 2 main tank
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The digital readout box and pointer change colour to RED
The digital readout box and pointer turns bright.
The digital readout box and pointer change colour to AMBER
The digital readout box and pointer change colour to GREEN
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56% N2
52% N2
50% N1
56% N1
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Outboard of the no 2 engine
Inboard of the no 1 engine
By the wheel well
Outboard of the no 1 engine
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When an imbalance of 453 kgs occurs between the main tanks.
When the Centertank contains 726 kgs or more.
You are low on FUEL in main tanks
An imbalance of 726 kgs occurs between the main tanks
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They automatically sucks fuel from centertank
From the main tanks 1 and 2, via suction bypass valves.
By crossfeeding the pneumatic pumps
By suction only from main tank 1
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Dim blue
Bright blue
Amber
Red
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N1 and N2
N1
OVERHEAT in the APU, ENG 1 and ENG 2
Overspeed in the N1
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The N1 compressor
The N2 compressor
5th stage
9th stage
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When the No 1 tank is approx 50% empty, and its forward fuel pump is ON. It feeds the fuel into the No 1 main fuel tank.
By turning the switch to the on position in the OVERHEAD panel
Automatically when Fuel remains in Center tank
Automatically when main tank no 2 is reached 50 % or below
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A green “REV” indication above the N1 display and free movment of the reverse thrust lever.
The REV indication turns Amber
A green “REV” indication above the N1 display and free movment of the thrust levers
The REV indication light becomes bright
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Automatically when each tank is full
By turning on the switch in the OVERHEAD Panel
When the BATT in turned ON
It operates automatically when the fuel level reaches 90 %
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The main oil filter (scavenge filter).
Engine Oil
The Heat Exchanger
The main filter valve
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No Indication
OVERHEAT light will illuminate in the MASTER CAUTION system
“LOW PRESSURE” lights will illuminate, and “MASTER CAUTION”, and “FUEL” system annunciator light.
In the OVERHEAD Panel there will be a amber "LOW FUEL" Light
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FUEL is unable of reaching either engine no 1 or engine no 2
There is a FILTER malfunction
No Fuel remaining in the center tank
Impending filter bypass
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An AC driven pump
Engine and IDG lubrication OIL
Bleed air from the respective Engine
APU exhaust
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The no 2 tank
Both tank 1 and 2
The Center tank
The no 1 tank
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The EEC has detected an impending SLOW START
The EEC has detected an impending COLD START
The EEC has detected an impending HOT START
The EEC has detected a warm Engine
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The Center tank contains 726 kgs or more, and both center tank pump output are below limits.
Low Fuel
The Center tank contains 453 kgs or more, and both center tank pump output are below limits
It indicates "LOW FUEL" temperature
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2 high energy AC systems
1 in each
5 in total
2 high energy DC systems
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When flaps are in landing configuration or engine anti-ice is ON
When flaps are in landing configuration or engine anti-ice is OFF
When flaps are in T/O configuration or engine anti-ice is ON
When flaps are in landing configuration.
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Engine start levers and engine fire switches
By the EEC
Only By the Fire handle
By the cutoff valve
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Both igniters, when the engine start lever in flight mode
Both igniters, when the engine start lever is at MAX
Only one Ignitor
Both igniters, when the engine start lever is at IDLE.
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When a rapid decrease in the N2 is detected (i.e. flameout).
There will be no activation unless you turn start swithes to Flight or CONT
When a rapid decrease in the N1 is detected (i.e. flameout).
When a rapid decrease in the compressor is detected (i.e. flameout).
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