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Jpierce > Engine Run > Flashcards

Engine Run Flashcards

1
Q

What are the N1 limits at stabalized idle?

A

16-22%

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2
Q

What are the N2 limits at stabalized idle?

A

54-62%

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3
Q

What is the EGT limit at start?

A

725 C

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4
Q

When does the automatic starter cutout start?

A

43-45% N2

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5
Q

How long does the pneumatic starter’s automatic cutoff sequence take to complete?

A

3-9 seconds

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6
Q

When wet motoring, at what engine speed do you place the throttle to start?

A

15-20% N2

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7
Q

What are the chock requirements above ground idle?

A

6 chocks. 2 in front of front tires. 2 in front of aft tires. 2 aft of aft tires

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8
Q

What positions should the strobes be in for a non-fuel trasnfer engine run?

A

Upper on. Upper color A (Red)

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9
Q

Reserve brake pressure should read what during pre-check?

A

1,000 PSI at 70

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10
Q

What TO is used for engine cleanup after Halon is used?

A

1-1-691

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11
Q

What are the indications of an engine shutting down properly?

A

EGT reading decreases, N2 decreases to 0, Fuel flow to 0

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12
Q

What must you be aware of when operating an engine with the PMC off?

A

Not overshooting desired thrust setting

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13
Q

What must you check if nose doors are open prior to an engine run?

A

Ensure the actuator rods are disconnected

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14
Q

What CG indicators may not be used?

A

CDU’s or IFMP

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15
Q

What stage of low pressure turbine blade must you check the general condition of?

A

Stage 4

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16
Q

Why is it deseriable to minimize use of ignition systems during ground use?

A

Economic reasons

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17
Q

Inboard and outboard spoiler hydraulic pressure switches should be in what position during pre-start checks?

A

Cut-off with switch guards open

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18
Q

What two ways can you determine you have an internal engine fire?

A

Failure of EGT to decrease when throttles are in cutoff or ground crew observation

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19
Q

When should Halon be sprayed into an engine inlet?

A

When fire is restricted to that area and is of serious proportion

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20
Q

Bleed air crossover valve should be placed where prior to engine start?

A

Open (Cover closed)

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21
Q

What is the engine exhaust danger area at idle?

A

180 feet

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22
Q

During engine start, where should oil temp selector be placed?

A

M

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23
Q

What happens when you hit start on the APU while holding Gen Only? (4 things)

A
  • Applicable doors open and door open lights come on
  • Tachometer accelerates to 100% in approx 11 seconds
  • Applicable ready light stays out
  • Applicable EGT raises rapidly to 800F
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24
Q

Do not re-engage JFS above what speed?

A

5% N2

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25
Q

When oil temp switch is put to “T”, where should it settle?

A

175-195 degrees C

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26
Q

Ideally, when do you advance the throttle to start?

A

25% N2

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27
Q

When EWO start switch is pressed, what three things happen?

A
  • EWO 1 & 2 lights come on
  • RDY lights 1 & 2 come on
  • 1 & 2 EGT raises rapidly to approx 1300 F
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28
Q

APU with PN 161331-135 will have enclosure doors installed in what two cases?

A

First run of a newly installed or newly reinstalled APU engine

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29
Q

How fast does combustion occur?

A

Within 10 seconds after throttle is moved to start (Usually within 2-3 seconds)

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30
Q

When an outboard engine is run above ground idle, the opposite engine must be ran to what setting?

A

Within 5% N1

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31
Q

What do you do for an engine flameout?

A

Place affected engine to cuttoff and all others to idle. Shut down engines and investigate cause. A restart may be attempted if indications prior to flameout did not reveal malfunction

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32
Q

What must you wait for before turning boost pump switches off?

A

N2 to read 0%

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33
Q

For normal operations, what is the minimum time that should be used to transition from idle to TRT?

A

2 seconds

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34
Q

Why must throttles be put in cutoff before T-handle is pulled?

A

To avoid damage to the fuel pump

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35
Q

When would you place the engine switch to ignition?

A

After 50% N2 when temp is below freezing

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36
Q

Where should the APU generator switch be prior to APU start?

A

Off position

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37
Q

At which temperatures must you perform a frozen door check on the APU?

A

40 degrees F

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38
Q

QSAS accumulator should read what?

A

3000 +/- 350 PSI

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39
Q

For what type of APU operation is a fireguard required?

A

When APU is operating with enclosure doors removed?

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40
Q

Define “hot start”

A

EGT exceeds maximum starting temps

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41
Q

Define “no start”

A

EGT does not rise

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42
Q

Can JFS be operated with fan cowls open?

A

No, damage to engine components could result

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43
Q

After ignition, fuel flow will increase to approx _____. When throttle is placed to idle, fuel flow should be _____?

A

1000 Pounds Per Hour. 400-800 PPH.

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44
Q

How long must you operate at idle before going to a higher thrust?

A

5 minutes

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45
Q

What happens if you depressurize hyraulics before N2 reads 0?

A

You could overfill the reservoir

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46
Q

During engine run, what position must the fan ducts be in?

A

Closed and latched

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47
Q

During an engine run defuel, where must the manuel refuel valve be?

A

Down in the flight position

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48
Q

When something is dropped in front of an engine, when must you shut it down?

A

Immediatly

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49
Q

Prior to engine start, what position is the engine bleed valve in?

A

Open

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50
Q

What position are the nav lights in during a fuel transfer engine run?

A

Bright and steady

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51
Q

What is the exhaust danger area at TRT?

A

900 feet

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52
Q

When do brake over-pressure relief valves release pressure and fluid?

A

3400 PSI

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53
Q

White strobe lights can cause eye damage up to what distance away?

A

500 feet

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54
Q

What is the minimum number of people to remove enclosure doors during APU operation?

A

2

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55
Q

If APU is unable to hit 25%, when can you start?

A

Maximum motoring speed (less than 1% increase in N2 in five seconds) and above 20% N2

56
Q

Hold mode select to Gen Only when starting the APU until what RPM?

A

60% RPM

57
Q

If starter control valve light stays on, when and what must you do?

A

If on for 10 seconds after 45% N2, place throttle to cutoff and engine bleed valve to close

58
Q

At what RPM do you place the ignition switch to off?

A

50% N2

59
Q

What is the duty cycle for JFS starting?

A

60 second max continous operation

60
Q

What is the duty cycle for JFS motoring?

A

180-190 seconds before automatic shutdown. Allow 60 minute cooling

61
Q

What are the EGT limits for normal takeoff power?

A

905 Celsius. Can only be above 870 Celsius for five minutes.

62
Q

What are the N1 and N2 limits at normal takeoff power?

A

102% N1 and 105% N2

63
Q

What is the maximum oil scav temp at normal takeoff power?

A

160 Celsius

64
Q

During icing conditions prior to exceeding __ % N1, if engine has operated at idle for __ minutes, accelarte to __ % N1 to shed initial ice. Check for ____ ____ or ____ then accelerate slowly to __ % N1 and hold for __ seconds to shed the remainder of the ice.

A

70, 10, 35, unusual vibration or noise, 70, 15

65
Q

What actions should you take for an unsatisfactory engine start to shut down that engine for a no start, hot start or sub idle stall?

A

Do not use engine fire switch. Place throttle to cut off. Continue to motor for 60 seconds. Move ignition/start switch to off. Turn fuel boost pumps off. Investigate reason. Clear fuel. If neccessary, dry motor. Another start may be attempted if temp limit was not exceeded.

66
Q

If starting fuel flow exceeds ____ before light off, a hot start may result. Shut down immediately,

A

680 PPH

67
Q

Prior to start, ensure PMC switches are in what position?

A

On, switch guards closed

68
Q

What must be done on a newly installed engine or hydraulic pump?

A

System hydraulic pressure switch should remain off for 5 minutes at Idle to bleed air from hydraulic system.

69
Q

What two things must be positioned where for APU start?

A

Ignition/start switch to off, throttles to cutoff

70
Q

Ensure APU cooling air duct fire control valve is ____

A

Open

71
Q

Normal fuel flow rate at stablized RPM should read what?

A

400-800 PPH

72
Q

What can be indicated by one APU or ground cart failing to provide sufficient N2?

A

Bleed air duct failure or leak

73
Q

What is the duty cycle for the pneumatic starter for motoring?

A

5 minutes maximum continuous operations. 10 minutes cooldown after first cycle, 30 minute cooldown on subsequent cycles

74
Q

On comm 2, put selector switch to what position?

A

TR

75
Q

How much must you reduce maximum wind limits in gust conditions?

A

5 knots

76
Q

What PSI must you charge to for setting brakes?

A

3,100 PSI

77
Q

What position for strobe lights during a fuel transfer engine run?

A

All off

78
Q

How can you tell what position the APU cool air duct fire control valve is in?

A

If the red indicator mark is visible, the valve is closed.

79
Q

Hydraulic quantity gauges should read what prior to engine start?

A

Left 3.75-4.25 gallons. Right 4-4.5 gallons

80
Q

At what percent N1 does running an inboard engine require the opposite inboard engine to be ran within 5%?

A

40% N1

81
Q

APUs are not to be restarted in EWO mode after APU operation for how long?

A

5-35 minutes unless actual EWO condition requires

82
Q

Personnel aft of what station inside the airplane must wear hearing protection during APU operation?

A

900

83
Q

What identifies a hung start?

A

An engine light off followed by rapid EGT rise, abnormally slow acceleration, and RPM stabilization below ground idle

84
Q

What could cause a rapid EGT rise resulting in an overtemp due to excessive fuel in the combustion chamber?

A

A delayed light off

85
Q

What position should the hydraulic pump supply switches be in?

A

Open with the guards closed

86
Q

How long are you supposed to wait between extinguish switches?

A

30 seconds

87
Q

When shutting down, if a steady decrease in EGT does not occur, be prepared to _____?

A

Motor engine with starter until evidence of burning has ceased

88
Q

Engine inlet danger area at idle?

A

25 feet

89
Q

During non-defuel engine run, where must the manuel refueling handle be?

A

Up in the refuel position

90
Q

If throttle is retarded to cutoff, do not advance it until proper engine start sequence is re-iniated. Why?

A

Introducing unburned fuel into the engine may create a fire in the engine

91
Q

If amgient temperature is colder than ___ and first start is unsuccessful, apply heat (___ max) to MEC for a minimum of ___ but prerably ___.

A

0 Celsius or 32 F, 65 C or 150 F, 10 minutes, 30 minutes

92
Q

What is the aft CG limit for an engine run?

A

35%

93
Q

What are the numbers for a cross check?

A

EGT less than 600 C at 40 N2

94
Q

When an engine is ran with fan cowls open, what must you inspect for?

A

Fuel, oil, and hydraulic leaks

95
Q

What oil indications are required prior to advancing throttle to start? Idle?

A

Start - Positive oil indication. Idle - Low oil pressure light out and at least 11 PSI indicated

96
Q

What should the volts read?

A

27 +- 3 volts

97
Q

Define sub-idle stall

A

N2 rollback. As N2 rolls back, EGT will rise. Fuel flow cannot be used as a stall indication.

98
Q

What are the fuel requirements for an engine run?

A

15,000 pounds for ground idle. 40,000 pounds for 75% N2. 60,000 pounds for TRT

99
Q

If air temp is constantly below -40, use which engine oil?

A

MIL-PRF-23699

100
Q

Can both fan cowls and fan ducts be in the held open position during wet and dry motoring?

A

Yes

101
Q

Can engine cowling be opened or closed during engine run?

A

No, they must stay in the position they were in prior to starting

102
Q

What two IDG lights can come on to indicate an engine shut down is required?

A

IDG failure. IDG DISC

103
Q

Pneumatic starter initiates automatic cutout when? JFS?

A

43-45% N2. 50-53% N2

104
Q

N1 RPM should be indicated by when?

A

25% N2

105
Q

When starting, a rise in EGT should occur within how long?

A

10 seconds

106
Q

Prior to start, place left Alternate Pressure switch to ____ and right Alternate Pressure switch to ____.

A

Off and decrease (Switch guards closed)

107
Q

Left and right accumulator pressure should read what during your precheck?

A

2,000 PSI at 70F

108
Q

When do you advance from start to idle?

A

50% N2

109
Q

If ambient temp is below ___, do not close the ____ until the engine has been ran for ___ to allow ____ oil temp to come up

A

40F, Gen breaker switch, 5, IDG

110
Q

Where must the throttle lever be prior to fuel boost pumps being turned on?

A

Cutoff

111
Q

If starter control valve fails to close (indicated by starter valve light not going out), what should you do?

A

Throttle to cutoff, engine bleed switch to close

112
Q

Nav lights should be positioned where during a non-transfer engine run?

A

Bright and flash

113
Q

Only for ground starts: Do not re-engage pneumatic starter above _____. Reengagement above this speed could result in _____ ______.

A

25% N2, starter damage

114
Q

When can you run more than one engine above idle at one time?

A

When tech data requires

115
Q

Describe engine anti-ice procedures

A

Operate for 5 minutes if temp is 0-32 F with 50% or more humidity. Operate for 10 minutes if temp is below 0F. Place Engine Anti-Ice switch off before starting engines

116
Q

What light comes on momentarily when battery power goes from off to emergency?

A

EGT lights

117
Q

Advance throttles to start at 25% N2. Monitor for these two things.

A

Fuel flow 300-680 PPH. EGT indication within 10 seconds

118
Q

Name eight indications that should be present at stabilized idle?

A

N1 - 16-22% N2 - 54-62% EGT is not over 725C Oil pressure is 13-35 PSI HYD pump inop light is out Engine low oil pressure light is out Oil temp is less than 160C Fuel flow is 400-800 PPH

119
Q

What should hydraulic pressure gauges read AFTER engine start?

A

2,850 - 3,200 PSI

120
Q

How can you recognize an engine flameout?

A

Immediate decrease in EGT, N2, fuel flow, and oil pressure. N1 RPM drops closely after

121
Q

What happens when you upgrade from Gen only on the APU by hitting the start switch for a second time?

A

Applicable RDY light comes on. Applicable EGT rises rapidly to approx 1200 F

122
Q

When wet motoring, within ___ of fuel flow indication of ___ PPH or fuel spray appears outside engine exhaust section, place throttle to ____ and continue to motor for ____ to clear fuel from combustion section.

A

15 seconds, 330, cutoff, 60 seconds

123
Q

What should the surge damper pressure be at 60F?

A

1,500 +- 50 PSI

124
Q

If failed start attempt, shut down JFS. After maximum delay of ____, motor for ____. Delay _____ before second start attempt

A

120 seconds, 90 seconds, 5 minutes

125
Q

Define false start

A

EGT rises with no increase in RPM

126
Q

On Comm 1, place selector to what position?

A

Main

127
Q

Frequency meter should read?

A

395-405 cycles

128
Q

Ensure flame arrestor plug is _____

A

Installed

129
Q

What condition must be met for enclosure doors to be able to be removed?

A

APU has reached 100% RPM in Gen Only mode

130
Q

What is the intake danger area at TRT?

A

50 feet

131
Q

What is the fuel requirement for APU operation?

A

2,000 pounds in #2 main tank

132
Q

At what speeds may engine cowls be in the open position?

A

Ground and flight idle

133
Q

When can tailwind component limits be exceeded?

A

Power settings up to 70% N1

134
Q

What is the duty cycle for the pneumatic starter for starting?

A

90 seconds maximum continuous operation. Maximum of 3 90 second cycles. 60 second cooldown after cycles 1 and 2. 10 minute cooldown after third cycle. (90, 60, 90, 60, 90 10)

135
Q

When wet motoring, place ignition switch to off and start light goes out within ____

A

10 seconds

Jpierce (5 decks)

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