Final Review Flashcards
What are the Aircraft’s dimensions?
Length (nose to tail) 119’ 7”
Height 36’ 3”
Width (wing tip to wing tip) 94’ 9”
What are the weight limitations of the aircraft?
Ramp/taxi weight 144 000 T/O weight 143 500 Landing weight 121 000 Zero Fuel weight 113 000 Empty weigth 77 100 Maximum Payload 35900
Main engine manufacturer?
CFM International CFM56-3
How many seats does the Aircraft have?
8 first class + 138 economy
What is the maximum operating latitude of the aircraft?
73 degrees North and 30 degrees South
How many members of the flight crew are required?
2 pilots
What is the maximum and minimum runway slope?
+/-2 degrees
Maximum tailwind component of the aircraft?
15 knots
What is the max differential pressure?
8.65 PSI
What is the max differential pressure for TO/LND?
.125 PSI
How much TO thrust do the engines have?
22000 lbs.
How many fuel tanks does the aircraft have?
- 2 main wing tanks and 1 center tank.
If the center tank is carrying more than 1000 lbs of fuel how much fuel must be in the 2 wing tanks?
The 2 wing tanks must be full of fuel. Each must be carrying 10000 lbs.
How many fuel boost pumps does the aircraft have?
- One powered by each engine.
Can one side of the fuel system feed the other sides engine?
Yes, through the crossfeed valve.
What does the crossfeed valve do?
It allows fueling from one side of the system to the other in case of malfunction.
How many mechanical fuel pumps does the aircraft have?
6, 2 in each fuel tank.
How are the fuel pumps powered?
Electrical.
How are the engines fueled if the electrical pumps are not available?
The engine-driven pumps provide suction and the engine draws fuel in through the bypass valves.
What are engine fuel shutoff valves used for?
To cutoff fuel flow in case of an engine fire. Each engine has one. They are operated by the DC hot battery bus.
What does the fuel manifold do?
The fuel manifold directs fuel to either engine from any tank. It is powered by the DC hot battery bus.
What does the center tank scavenge pump do?
The center scavenge pump empties the fuel remaining in the center tank into tank 1.
How is the APU fueled?
The APU is fueled by AC electrical power if the system is operating normally or by suction if the electrical system is inoperative.
Where is rapid fueling/defueling done?
From tank 2.
Can the aircraft do over-wing fueling?
Yes, each main tank has a gravity fed receptacle for over-wing fueling.
What lateral imbalance is allowed to be used?
Lateral imbalance between the 2 main tanks must be 0. Random imbalance must not exceed 1000lbs.
Where does conditioned air come from?
Conditioned are come from one of 2 AC packs in the air conditioning system.
Where does the air used by the AC packs come from?
Bleed air from the 5th and 9th stage of the engines
Which AC pack conditions the flight cabin?
The left pack.
Where does the excess air from the left pack go?
The excess air from the left pack mixes with air from the right pack and the recirculation system in the mixed manifold before being distributed into the passenger cabin.
What do recirculation fans do?
They try to economize the use of bleed air by circulating cabin air back into the mixed manifold to be mixed with temperature controlled bleed air.
What are the three sources of bleed air?
Engine bleed air, from the 5th and 9th stage, bleed air from the APU and an external ground source when the engines are off.
Where does the preconditioned ground air source connect to the aircraft?
Directly to the mixed manifold.
What is the APU?
The APU is a self-contained turbine engine located under the tail assembly.
What does the APU do?
The APU provides start up power, back up air and back up power to the electrical systems.
At what speed does the APU run?
The APU runs at a constant speed. It is either on or off. The speed does not vary.
Who makes the APU?
Garrett. Either the 85-129 or the 36-280.
What are class A, B and C fires?
A - material
B - liquid
C - electrical
