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B747 - Limitations > Engines > Flashcards

Engines Flashcards

1
Q

ERF Engine?

A

PW4062A

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2
Q

8F Engine

A

GEnx-2B67/P

occasionally non P engines fitted

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3
Q

Engine Anti Ice

A
  • ON All ground ops in icing condition
  • ON/Auto in flight in icing conditions
  • except below -40 deg
  • above 10 deg TAT or OAT
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4
Q

Icing conditions

A
  • 10 deg and below (TAT air / OAT ground)
  • Visible moisture (fog vis less 1sm / 1600m)
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5
Q

Prohibited Types of Fuel

A

Jet B or JP-4

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6
Q

Types of Fuel

A

ERF - Jet A / A-1 or JP-5
8F - Jet A / A-1 or JP-5, JP-8 or TS-1

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7
Q

Max fuel tank temp

A
  • 54 deg
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8
Q

Min Fuel tank temp

A

ERF - -43 or 3 deg above freezing temp (higher of)
8F - -48 or 3 deg above freezing temp (higher of)

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9
Q

ERF Engine Temp Limits

A

GND Start - 535 deg
Air Start - 650 deg
TO - 650 deg (5 min / 10 min EO)
Max Continuous - 625 deg

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10
Q

8F Engine Temp Limits

A

GND Start - 750 deg
Air Start - 875 deg
TO - 1060 deg (5 min / 10 min EO)
Max Continuous - 1030 deg

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11
Q

ERF Oil limits

A

Max Temp - 177 deg
Max Continous - 163 deg
Min TO - 50 deg
Min Pressure - 70 psi

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12
Q

8F Oil limits

A

Max Temp - 177 deg
Max Continous - 160 deg
Min TO - Temp rise
Min Pressure - 10 psi at idle

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13
Q

ERF CON Ignition

A
  • Heavy Rain
  • Mod/Sev Turb
  • Volcanic Ash
  • Icing Conditions
  • Contaminated RWY
  • Auto trailing edge flaps & NAC ON
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14
Q

8F Tailwind/Crosswind limits

A
  • Xwind >35kts Taxi thrust limit 45% N1
  • > 5 Tail & >26 Xwind Taxi thrust limit 45% N1
  • Winds >55kts Taxi Idle Thrust only
  • Shut engine down if 90deg xwind >55kts
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15
Q

8F Vibrations in Icing Conditions

A
  • Do not take off above 4 units
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16
Q

APU min alt

A
  • On ground do not operate below - 1000’ pressure alt
17
Q

APU to Pack with engine failure

A
  • Do not change bleed configuration until flap retraction!
18
Q

APU for Electrical Power

A
  • Ground only
19
Q

APU Max Alt

A
  • 20’000’
20
Q

APU Bleed Max Alt

A
  • 15’000’
21
Q

APU Inflight Start

A

Do Not Start Inflight!

22
Q

ERF Engine Starter Limits

A
  • Max reengagement 20% N2
23
Q

ERF Engine Starter Duty Cycle

A
  • 5 min then 0% N2
  • 5 min then 0% N2
  • 20 min cooling
  • 5 min then 0% N2
24
Q

8F Ground XWind Engine Limt

A
  • Shut down if 90 deg Xwind exceeds 55 kts
25
Q

APU Stater Limits

A

1/2 - 1 min
2/3 - 1 min
3/4 - 75 min

8F has TRU limits but we don’t use it.

26
Q

APU Battery Switch

A
  • Remain ON for 2 min after APU selected OFF
27
Q

Flight with Rat Extended for maintenance.

A

Prohibited

B747 - Limitations (11 decks)

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