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Copyright . The Boeing Company. See title page for details.
L.TOC.0.2 D6-30151-425 October 1, 2000

747 Operations Manual

General
This chapter contains Airplane Flight Manual (AFM) limitations and Boeing recommended non-AFM operating limitations. Boeing recommended limitations are provided for flight crew information. Limitations that are obvious, shown on displays or placards, or incorporated within an operating procedure are not contained in this chapter.
Airplane General Operational Limitations
Runway slope  +/-2% 
Maximum Takeoff and Landing Tailwind Component  15 knots 
Maximum Operating Altitude  45,100 feet pressure altitude 
Maximum Takeoff and Landing Altitude  10,000 feet pressure altitude 
Maximum speed operating in Reduced Vertical Separation Minimum (RVSM) Airspace  0.90 Mach 
QFE Operations  Prohibited 

Non–AFM Operational Information
The turbulent air penetration speed is 290 to 310 KIAS/.82 to .85M. The maximum takeoff and landing crosswind is 30 knots (not limiting). Do not operate HF radios or weather radar during refueling operations.
Altitude Display Limits for RVSM Operations
Standby altimeters do not meet altimeter accuracy requirements of RVSM airspace.
The maximum allowable in-flight difference between Captain and First Officer altitude displays for RVSM operations is 200 feet.
Copyright . The Boeing Company. See title page for details.
April 01, 2001 D6-30151-425 L.10.1
Limitations -Operating Limitations 747 Operations Manual

The maximum allowable on-the-ground altitude display differences for RVSM operations are:
Field Elevation  Max Difference Between Captain & F/O  Max Difference Between Captain or F/O & Field Elevation 
Sea Level to 5,000 feet  35 feet  75 feet 
10,000 feet  40 feet  75 feet 

Weight Limitations
Weights  Kilograms 
Maximum Taxi Weight  397,800 
Maximum Takeoff Weight  396,893 
Maximum Landing Weight  285,763 
Maximum Zero Fuel Weight  246,073 

Door Mounted Power Assists and Escape Slides
Main and upper deck door emergency power assists and evacuation slide systems must be armed with the mode select lever in the AUTOMATIC position prior to taxi, takeoff, and landing whenever passengers are carried in the respective area.
Air Systems Cabin Pressurization
Maximum differential pressure (relief valves)  9.4 psi 
Maximum allowable cabin pressure differential for takeoff and landing  0.11 psi 

Autoflight Autopilot/Flight Director System
The autopilot must not be engaged below a minimum engage altitude of 250 feet after takeoff.
The autopilot must be disengaged before the airplane descends more than 50 feet below the MDA unless it is coupled to an ILS glideslope and localizer or in the go–around mode.
Copyright . The Boeing Company. See title page for details.
L.10.2 D6-30151-425 October 1, 2000

Limitations -Operating Limitations
747 Operations Manual
For single channel ILS approaches, the autopilot must be disengaged before the airplane descends below 100 feet AGL.
Use of aileron trim with the autopilot engaged is prohibited.
Automatic Landing
Maximum allowable wind speeds when landing weather minima are predicated on autoland operations:
Headwind  25 knots 
Tailwind  15 knots 
Crosswind  25 knots 

The maximum glideslope angle is 3.25 degrees.
The minimum glideslope angle is 2.5 degrees.
Automatic landings may be made with flaps 25 or 30 only.

Communications VHF Radios
With an operational ACARS system, the use of center VHF radio is not approved for ATC voice communications.
Engines, APU Engine Limit Display Markings
Maximum and minimum limits are red. Caution limits are amber.
Engine Fuel System
The maximum fuel temperature for Jet A, Jet A–1, JP–5, or JP-8 is 54°C (130°F). The use of Jet B and JP-4 fuels is prohibited.
Engine Ignition
Continuous ignition must be on encountering:
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heavy rain

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severe turbulence

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volcanic ash

.
icing conditions

.
standing water or slush on runway Note: Continuous ignition is automatically provided when nacelle anti–ice is on.

Copyright . The Boeing Company. See title page for details.
April 01, 2001 D6-30151-425 L.10.3
Limitations -Operating Limitations

Reverse Thrust
Intentional selection of reverse thrust in flight is prohibited. Backing the airplane with use of reverse thrust is prohibited.
　
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