Limitations Flashcards
Maximum Differential Pressure
9.4 psi
Maximum Allowable Cabin Pressure Differential For Takeoff And Landing
0.11 psi
When is the use of aileron trim prohibited?
When the autopilot is engaged.
Minimum Altitude to Engage Autopilot: After Takeoff and Initial Climb
500 Feet
Minimum Altitude to Disengage Autopilot: Non-precision Approaches
50 Feet below MDA
Minimum Altitude to Disengage Autopilot: Single Channel ILS Approaches
100 feet AGL
Minimum Altitude to Disengage Autopilot: Autoland (Two or Three Autopilots)
Touchdown/Rollout
Maximum Autoland Glide Slope Angle
3.25 degrees
Minimum Autoland Glide Slope Angle
2.5 degrees
At what flap setting may you make an Autoland?
Flaps 25 or 30
Autoland - Maximum Wind Component: Headwind
25 Knots
Autoland - Maximum Wind Component: Tailwind
10 Knots
Autoland - Maximum Wind Component: Crosswind
25 Knots
Autoland - Maximum Wind Component: CAT II/III
15 Knots
Do not use HF Radios when?
During refueling operations
When is the center VHF radio not approved for ATC voice communications?
With an operational ACARS system.
What is the Desired Oxygen Pressure for the Crew System? (Land and Ocean)
- 950 psi (Land)
- 1,200 psi (Ocean)
What is the Desired Oxygen Pressure for the Passenger System?
(Land and Ocean)
1,200 psi (Land)
1,200 psi (Ocean)
What type of engine is on the 747-400?
GE CF6-80C2B5F
What is the 747-400 Engine Thrust?
62,100 Lbs
Maximum Thrust Is Limited To How Many Minutes?
5 Minutes
Minimum Oil Pressure
10 psi
Maximum Engine Oil Temperature Continuous
160° C
Maximum Engine Oil Temperature for 15 Minutes
160° C to 175° C
Maximum Engine RPM Limits (%)
N1
117.5
Maximum Engine RPM Limits (%)
N2
112.5
Maximum Engine EGT Limits
Start
750°C
Maximum Engine EGT Limits
Takeoff
960°C
Maximum Engine EGT Limits
Continuous
925°C
When must engine ignition be on continuous?
- Heavy Rain
- Severe Turbulence
- Volcanic Ash
- Icing Conditions (only if nacelle anti-ice or its Auto feature is inoperative)
What fuels are approved for the
747-400?
- Jet A, A1, A50
- Jet B
- JP4, JP5, JP8
Reverse Thrust Limitations?
- Reverse thrust in flight is prohibited.
- Backing up of aircraft is prohibited.
Fuel Jettison Flap Limitations?
Do not extend or retract the flaps between position 1 and 5 during fuel jettison.
What are the available fuel densities?
2.72 -3.21 Kgs/gal
If fuel density is below ____ what is the restriction?
2.92 Kgs/gal
Gross weight is limited
If CWT fuel is required, what is the minimum amount?
1,800 Kgs prior to engine start
Does the CWT Fuel Quantity Indication System have to be operative to dispatch with CWT fuel?
Yes
When is LNAV or VNAV not to be used?
Below transition altitude or level when QFE is used.
QFE altitude reference for the PFDs must be selected on the CDU Approach Reference page when?
Whenever QFE is used instead of QNH
What are the approved Operations for the 747-400?
- Visual (VFR)
- Instruments (IFR)
- Icing Conditions
- Extended Overwater
Do not extend flaps above what altitude?
20,000 Feet
When should the speedbrakes not be used?
With flaps extended past 20
Flight Maneuvering Load Acceleration Limits:
Flaps Up
+2.5 to -1.0
Flight Maneuvering Load Acceleration Limits:
Flaps Down
+2.0 – 0.0
Ground Wind Limits for all Doors:
Opening or closing
40 Kts
Ground Wind Limits for all Doors:
Open
65 Kts
Maximum Pressure Altitude
Takeoff and Landing
10,000’
Maximum Operating Altitude
45,100’
Maximum % Runway Slope
+/- 2%
Slush or Standing Water Limits
Takeoff
1/2”
Slush or Standing Water Limits
Landing
1”
When must nacelle anti-ice be ON?
During all engines-running ground operations when icing conditions exist.
When should you NOT use the anti-ice system?
OAT or TAT exceeds 10°C
What position should the nacelle anti-ice switches be in during flight?
AUTO
Icing conditions exist when?
- Ground - OAT 10°C or below + Visible Moisture
- Flight – TAT 10°C or below + Visible Moisture
- On ramps, taxiways, runways with surface ice/snow/standing water.
- When OAT < 10°C and dew point / OAT < 3°C
Tires are approved for at least what true ground speed?
235 MPH
(204 Kts)
Maximum RVSM Airspeed
(Mach)
.90 Mach
Turbulent Air Penetration Speed
290 – 310 KIAS
.82 - .85 Mach
Can terrain display be used for navigation?
No
When is the use of terrain alerting and terrain display functions prohibited?
Within 15 nm of takeoff, approach, or landing at an airport not contained in the GPWS terrain database.
Maximum Taxi Weight
397,800
Maximum Takeoff Weight
396,893
Maximum Landing Weight
302,092
Maximum Zero Fuel Weight *
288,031
* ZFW greater than 276,691 comply with decrease maximum weight limits
Maximum Tailwind Component
Takeoff
10 Kts
Maximum Tailwind Component
Landing
10 Kts
Maximum Tailwind Component
Runway clean and dry
< 7500’
0 Kts
Maximum Tailwind Component
Runway clean and dry
7500’ – 7999’
5 Kts provided total surface wind is
10 Kts or less
Maximum Tailwind Component
Runway NOT clean and dry
< 8000’
0 Kts
Maximum Tailwind Component
Runway NOT clean and dry
8000’ – 8499’
5 Kts provided total surface wind is
10 Kts or less
Maximum Demonstrated Crosswind Component (Peak Gust)
Takeoff
30 Kts
Maximum Demonstrated Crosswind Component (Peak Gust)
Takeoff – Wet
25 Kts
Maximum Demonstrated Crosswind Component (Peak Gust)
Takeoff – Standing Water, Slush, Snow or Ice
15 Kts (AAI)
Maximum Demonstrated Crosswind Component (Peak Gust)
Landing
30 Kts
Maximum Demonstrated Crosswind Component (Peak Gust)
Landing – Wet
25 (AAI)
Maximum Demonstrated Crosswind Component (Peak Gust)
Landing – Standing Water, Slush, Snow or Ice
10 Kts (AAI)
Landing Gear Operating Speed
Retracting or Extending
VLO = 270 KIAS
MMO = 0.82 Mach
Landing Gear Extended Speed
VLE = 320 KIAS
MLE = 0.82 Mach
