x. ORAL STUDY GUIDE - 737NG > FUEL SYSTEM > Flashcards

FUEL SYSTEM Flashcards

(42 cards)

Study These Flashcards
1
Q
  1. What does ENG VALVE CLOSED mean when bright blue?
A

 In transit or disagreement

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2
Q
  1. What does ENG VALVE CLOSED mean when dim blue?
A

 Valve closed

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3
Q
  1. What does SPAR VALVE CLOSED mean when bright blue?
A

 In transit or disagreement

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4
Q
  1. What does SPAR VALVE CLOSED mean when dim blue?
A

 Valve closed

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5
Q
  1. What is the position of the engine valve or spar valve if the lights are extinguished?
A

 Open

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6
Q
  1. Which valve is controlled by the start lever,

engine valve or spar valve?

A

 Both, Spar valve and engine valve

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7
Q
  1. Which one of these valves is controlled by the

engine fire switch?

A

 Both

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8
Q
  1. Which one of these valves is controlled by the

respective EEC?

A

 Engine valve

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9
Q
  1. What is the maximum fuel temperature?
A

 49C

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10
Q
  1. What is the minimum fuel temperature?
A

 -43C or fuel freeze +3C (whichever is higher)

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11
Q
  1. What is indicated by a FILTER BYPASS light?
A

 Impending filter bypass (contaminated fuel)

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12
Q
  1. Could the Filter Bypass light be ice? Why not?
A

 Not likely. Fuel is warmed prior to entering filter

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13
Q
  1. If a fuel valve is in transit, is it bright or dim?
A

 Bright

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14
Q
  1. Is the fuel crossfeed from tank to tank or tank to engine?
A

 Tank to engine

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15
Q
  1. How many valves are controlled with the

crossfeed switch?

A

 One

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16
Q
  1. What electrical power is needed to operate the

crossfeed valve?

A

 Battery bus

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17
Q
  1. Are the Center Tank FUEL LOW PRESS lights

always armed to indicate low pressure?

Study These Flashcards
A

 No, only in ON position

18
Q
  1. What does the Center Tank FUEL LOW PRESS

lights mean?

Study These Flashcards
A

 Pumps are on with output either LOW or NO pressure

19
Q
  1. If only one Center Tank LOW PRESS light is on, will the Master Caution light illuminate?
Study These Flashcards
A

 Yes, it only takes one LOW PRESS light to give you the MC lights and FUEL ANNUNCIATOR on the center tanks

20
Q
  1. With one Center Tank pump OFF, will illumination of the opposite low press light illuminate the MC light?
21
Q
  1. What is the electrical power source for the center tank pumps?
22
Q
  1. What is the electrical power source for the

main tank fuel pumps?

23
Q
  1. What does illumination of a AFT/FWD fuel

LOW PRESS light mean?

Study These Flashcards
A

 Low output press or switch is off

24
Q
  1. What sort of indication would you get with the

illumination of just one LOW PRESS light in the center tank?

Study These Flashcards
A

 Master caution and fuel annunciator on recall

25
25. What indication would you get with illumination of both LOW PRESS lights in the same tank?
 Master caution and fuel annunciator lights
26
26. How many fuel sticks are there in a Main | Tank?
 six
27
27. How many fuel sticks are there in the Center | Tank?
 four
28
28. Which fuel is used first, Center Tank or Main | Tank?
 Center tank fuel
29
29. Do Center Tank pumps produce the same | pressure as Main Tank pumps?
 No, higher output
30
30. Engines have mechanical fuel pumps. Can | they suck fuel?
 Yes
31
31. Can fuel be suctioned from the Main Tanks? | Why?
 Yes. They have a bypass valve
32
41. What does CONFIG indicate on the Center | Tank gage?
 Center tank quantity >1600lbs with lowor no pump pressure and engine is running
33
32. Can fuel be suctioned from the Center Tank? | Why?
 No. No bypass valve
34
33. The Center Tank has a fuel scavenge jet | pump. What does it do?
 Transfers remaining center tank fuel to #1 main tank when #1 main tank is approximately half full and #1 fwd boost pump is running
35
34. Where is the fuel temperature sensor located?
 #1 main tank
36
35. Which tank can supply the APU?
 Any tank with the appropriate pump on | and crossfeed position
37
36. Which tank can the APU suction feed from?
 #1 main tank
38
37. What is the total capacity of the fuel system?
 46,000lbs
39
38. How much fuel can the Center Tank hold?
 28,800lbs
40
39. What does LOW indicate on the main tank | gages?
 Fuel quantity less than 2.000lbs
41
40. Can you get a LOW indication on the Center | Tank gage?
 no
42
42. What does IMBAL indicate on the Main Tank | gage?
 Mains differ by more than 1000lb
x. ORAL STUDY GUIDE - 737NG
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