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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
Crew/Pax O2 Pressure targets
Crew System: Land - 950 psi Ocean - 1200 psi Pax System Land - 1200 psi Ocean - 1200 psi
26
Engine EGT Limits (Starting)
- 870º C (limited to 40 sec) | - 750º C (unlimited)
27
Engine EGT Limit (takeoff)
960º C (limited to 5 mins)
28
Engine EGT Limit (Max Con)
925º C
29
Continuous Ignition ON required conditions
- 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
MAX Flap Altitude
20,000’ #
31
Speedbrake restrictions with flaps
Not recommended beyond 20º
32
MAX Alt difference between CA and FO Display (RVSM)
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
In flight Min Fuel Temp
3º C above fuel freezing point
34
Prohibited Fuel Types
JET-B | JP4
35
Nacelle/Engine Anti-Ice operational restriction
- 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
Ice Crystal Icing Conditions
- 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
Fire Suppression System restriction (-8)
When ARMED, turning any PACK Off is prohibited
38
Upper Deck max occupancy (including crew members)
8 (-400F and -8)
39
Max tire speed
235 mph (204 knts)
40
Max Taxi Weight
397,800 kg
41
Max Zero Fuel Weight
288,031 kg
42
Max allowable cab press diff for T/O and land
0.11 psi
43
Do not operate APU below ____?
-1000’ PA
44
APU Start cycle restrictions
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
Smoke Barrier door must be closed during:
taxi, takeoff, and landing, closed in-flight unless entering or leaving the main deck cargo compartment.
46
Boeing Equivalent Thrust (B1F and B5F)
B1F - 56,500 lbs | B5F - 62,100 lbs
47
Min Oil Pressure
10 psi
48
Max Oil Temp (Con)
160º C
49
Max Oil Temp (transient)
175º C (15 mins)
50
Engine RPM Limits (N1 low pressure compressor)
117.5%
51
Engine RPM Limits (N2 Low Pressure Compressor)
112.5%
52
MAX Airspeed in RVSM Airspace
0.90 Mach
53
MAX Fuel tank temp
54º C
54
Jet-A Freeze Point
-40 ºC
55
Weather Radar Restrictions
- Do Not Use in hanger (except test) | - Do Not Use within 50’ of fuel spill
56
Min OAT for takeoff and landing
-54º C
57
Min Runway Operational Width
148’
58
Aircraft Length
231’ 10” (70.7 M)
59
Wingspan
213’ (64.9 M)
60
Distance Between Wing Main Gear
41’ 4” (12.6 M)
61
Reverse Thrust Limitations
``` # Intentional selection of reverse thrust in flight is prohibited # Backing the airplane with use of reverse thrust is prohibited ```
62
VNAV Selection limitation
- # 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
Flight Control input limitation
``` # 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
Maximum demonstrated takeoff and landing crosswind
30 knts
65
VMO/MMO
365 KIAS up to FL290 0.92M to FL451

Boeing 747 (21 decks)

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