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Boeing 747 > Limitations > Flashcards

Limitations Flashcards

1
Q

Flap Limit Speeds

A 
1 - 280 knts
5 - 260 knts
10 - 240 knts
20 - 230 knts
25 - 205 knts
30 - 180 knts
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2
Q

Fuel Tank Capacities

A 
Main 1 and 4: 26,576 kg
Main 2 and 3: 76,263 kg
Center: 52,167 kg
Reserves: 8,036 kg
Stab Tank (pax): 10,030 kg

Total (freight): 163,042 kg
Total (pax): 173,072 kg

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3
Q

VLO

A

Extend - 270 knts/0.82M

Retract - 270 knts/0.82M

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4
Q

VLE

A

320 knts/0.82M

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5
Q

Width for 180º turn

A

153’

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6
Q

Max Operating Altitude

A

45,100’

  • 43, 100 (-8)
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7
Q

Max Alt for takeoff and landing

A

10,000’ PA

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8
Q

Max Field Elevation

A

9,500’ MSL

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9
Q

Runway slope

A

+/- 2%

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10
Q

Turbulence Air penetration #

A

290-310 KIAS/0.82-0.85M

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11
Q

Max Tailwind Component for takeoff or landing #

A

15 knts

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12
Q

Ground wind limit for all doors

A
  • 40 knts during operation

- 65 knts while open

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13
Q

Crosswind guidelines

A

Dry/Good Braking: 40 knts takeoff; 36 kts landing
Wet/Good Braking: 25 knts takeoff; 32 knts landing
Good to Medium: 17 knts takeoff; 25 knts landing
Dry Snow/Medium Braking: 15 knts takeoff; 20 knts landing
Contaminated/Medium to Poor Braking: 12 knts takeoff; 15 knts landing
Ice/Poor Braking: 10 knts takeoff; 13 knts crosswind

NIL: OPS PROHIBITED

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14
Q

Max bank angle during landing

A

5º

  • greater bank angles may result in nacelle contact with the runway
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15
Q

MAX takeofff Weight (MTOW)

A

396,893 kg

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16
Q

Max Landing Weight (MLW)

A

302,092 kg

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17
Q

Max differential pressure

A

9.4 psi

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18
Q

Min AP engagement

A

250’

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19
Q

APU Operation (-400F)

A
  • Bleed Air can supply Pack 2 for takeoff (w/ Isolation Valves Closed)
  • APU bleed air should not be used above 15,000’ (“no load” 15,000’ - 20,000’)
  • No APU Gen in flight
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20
Q

Aileron Trim limitation

A

Prohibited with Autopilot Engaged

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21
Q

Autopilot Limitations

A
  • Aileron Trim use prohibited with A/P engaged
  • 4 operating HYD systems for Autoland #
  • Do Not Use below 250’ after takeoff #
  • Do Not Use below 100’ RA without LAND 2 or LAND 3 annunciation #
  • Do Not Use FLCH below 1000’ FA on Final App
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22
Q

Autoland Limitations

A
  • touchdown within 2,500’ from runway threshold
  • Flaps 25 or 30 only #
  • min TCH 44’
  • max GS angle: 3.25º #
  • min GS angle: 2.5º #
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23
Q

MAX Autoland wind component

A

Headwind/Crosswind - 25 knts #
Crosswind CAT II/III - 15 knts #
Tailwind - 15 knts #

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24
Q

Min Altitudes with Single AP Engaged

A
  • 50’ below MDA (non-precision approach)

- 100’ RA without LAND 2 or LAND 3 annunciation #

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25
Q

Crew/Pax O2 Pressure targets

A

Crew System:
Land - 950 psi
Ocean - 1200 psi

Pax System
Land - 1200 psi
Ocean - 1200 psi

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26
Q

Engine EGT Limits (Starting)

A
  • 870º C (limited to 40 sec)

- 750º C (unlimited)

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27
Q

Engine EGT Limit (takeoff)

A

960º C (limited to 5 mins)

28
Q

Engine EGT Limit (Max Con)

A

925º C

29
Q

Continuous Ignition ON required conditions

A
  • MOD to HVY Rain
  • MOD to HVY Turb
  • Icing Conditions (auto turned on when NAI is ON)
  • Hail/sleet
  • Volcanic Ash
  • Standing water/slush on runway
30
Q

MAX Flap Altitude

A

20,000’ #

31
Q

Speedbrake restrictions with flaps

A

Not recommended beyond 20º

32
Q

MAX Alt difference between CA and FO Display (RVSM)

A

In Flight: 200’

On Ground:
SL to 5,000’ - 35’ (within 75’ of FE)
5,000’ to 9,500’ - 40’ (within 75’ of FE)

33
Q

In flight Min Fuel Temp

A

3º C above fuel freezing point

34
Q

Prohibited Fuel Types

A

JET-B

JP4

35
Q

Nacelle/Engine Anti-Ice operational restriction

A
  • ON During all ground/flights operations with with icing condition with temps -40ºC OAT and 10ºC OAT/TAT
  • DO NOT USE above 10ºC OAT/TAT

Icing Conditions - below 10ºC OAT/TAT with any visible moisture or ground ice conditions

During Takeoff: Must be ON during icing conditions except during climb or cruise below -40ºC SAT

36
Q

Ice Crystal Icing Conditions

A
  • NAI ON in all ice crystal conditions (even below -40ºC)
  • Below 22,000’ WAI ON in all ice crystal condition (even below -40ºC)
    • OFF or AUTO when extending flaps

Ice Crystal Icing:

  • Amber or Red WX Radar returns below airplane
  • liquid water on the windshield at temps too cold for rain
  • Autothrottle unable to maintain selected speed
  • TAT on EICAS stays near 0ºC
37
Q

Fire Suppression System restriction (-8)

A

When ARMED, turning any PACK Off is prohibited

38
Q

Upper Deck max occupancy (including crew members)

A

8 (-400F and -8)

39
Q

Max tire speed

A

235 mph (204 knts)

40
Q

Max Taxi Weight

A

397,800 kg

41
Q

Max Zero Fuel Weight

A

288,031 kg

42
Q

Max allowable cab press diff for T/O and land

A

0.11 psi

43
Q

Do not operate APU below ____?

A

-1000’ PA

44
Q

APU Start cycle restrictions

A

Start 1 and 2:
TR wait: 1 min
Batt wait: 1 min

Start 2 and 3:
TR wait: 10 min
Batt wait: 1 min

Start 3 and 4:
TR wait: 75 min
Batt wait: 75 min

45
Q

Smoke Barrier door must be closed during:

A

taxi, takeoff, and landing, closed in-flight unless entering or leaving the main deck cargo compartment.

46
Q

Boeing Equivalent Thrust (B1F and B5F)

A

B1F - 56,500 lbs

B5F - 62,100 lbs

47
Q

Min Oil Pressure

A

10 psi

48
Q

Max Oil Temp (Con)

A

160º C

49
Q

Max Oil Temp (transient)

A

175º C (15 mins)

50
Q

Engine RPM Limits (N1 low pressure compressor)

A

117.5%

51
Q

Engine RPM Limits (N2 Low Pressure Compressor)

A

112.5%

52
Q

MAX Airspeed in RVSM Airspace

A

0.90 Mach

53
Q

MAX Fuel tank temp

A

54º C

54
Q

Jet-A Freeze Point

A

-40 ºC

55
Q

Weather Radar Restrictions

A
  • Do Not Use in hanger (except test)

- Do Not Use within 50’ of fuel spill

56
Q

Min OAT for takeoff and landing

A

-54º C

57
Q

Min Runway Operational Width

A

148’

58
Q

Aircraft Length

A

231’ 10” (70.7 M)

59
Q

Wingspan

A

213’ (64.9 M)

60
Q

Distance Between Wing Main Gear

A

41’ 4” (12.6 M)

61
Q

Reverse Thrust Limitations

A 
# Intentional selection of reverse thrust in flight is prohibited 
# Backing the airplane with use of reverse thrust is prohibited
62
Q

VNAV Selection limitation

A
  • # If leveling off within 2000’ AFTER changing altimeter setting from QNE to QNH, or QNH to QNE, do not use VNAV to execute the level-off if QNH is less than 29.70 in/1006 hPa.
  • VNAV may be re-engaged after level-off
63
Q

Flight Control input limitation

A 
# Avoid rapid and large alternating control inputs, especially in combination with large changes in pitch, roll, or yaw
- may result in structural failure at any speed, including Va
64
Q

Maximum demonstrated takeoff and landing crosswind

A

30 knts

65
Q

VMO/MMO

A

365 KIAS up to FL290

0.92M to FL451

Boeing 747 (21 decks)

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