Boeing 747 Fuel Monitoring boeing 747 pilot training course

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BOEING 747 FULL PILOT TRAINING COURSE STEP BY STEP 


Fuel Monitoring
The FMC receives fuel data from the fuel quantity indicating system (FQIS) or
from manual entries. Fuel quantity values display on the PERF INIT page as
calculated (CALC), MANUAL, or SENSED. They also display on the PROGRESS page as totalizer and calculated.
The FMC usually uses the calculated value for performance computations. Before
engine start, the calculated value is automatically set to agree with the FQIS value.
When the FMC receives a positive fuel flow signal at engine start, the calculated
value disconnects from the FQIS and decreases at the fuel flow rate.
During fuel jettison, the calculated value is set equal to the FQIS value. When fuel
jettison is completed, the calculated value disconnects from the FQIS and
decreases at the fuel flow rate. This fuel quantity value displays as CALC on the
PERF INIT page and as CALCULATED on the PROGRESS page.
If the flight crew inputs a fuel quantity, the line title changes to MANUAL. The
manual value replaces the FQIS value and is updated by the FMC using fuel flow
rate, the same as for the calculated value.
If fuel flow data becomes invalid after engine start, the calculated value is
considered invalid and the FMC uses FQIS quantity for performance
computations. In this case, fuel quantity displays as SENSED on the PERF INIT
page and as TOTALIZER on the PROGRESS page.
Fuel flow signals are also used to calculate the fuel used by the engines. FUEL USED displays on PROGRESS page. It is reset to zero on the ground after engine
shutdown, and when the FMC receives a positive fuel flow at the next engine start.
The scratchpad message FUEL DISAGREE–PROG 2 displays if the FMC calculates a large difference between the total sensed fuel quantity and calculated value. The flight crew should select PROGRESS page 2, and select the fuel value for the FMC to use for the remainder of flight.
The FMC continually estimates the fuel at the destination airport if the active route
is flown. FMC calculated fuel predictions are based on landing gear and flaps up
during climb, cruise, and descent. Any prolonged flight with landing gear and/or
flaps extended increases fuel required. The increased fuel consumption will not be correctly displayed on the FMC fuel predictions pages. The CDU message
INSUFFICIENT FUEL displays if the estimate is less than the fuel reserve value entered on the PERF INIT page.

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CLICK 👉 BOEING 747 CHECKLIST

CLICK 👉 Exterior Inspection

CLICK 👉 Preflight Procedure – First Officer

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CLICK 👉 Air Conditioning System Description

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CLICK 👉 Pressurization System Description

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CLICK 👉 Bleed Air Duct System

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CLICK 👉 Autopilot Disengagement

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CLICK 👉 AFDS Flight Mode Annunciations

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CLICK 👉 Automatic Flight - Cruise

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CLICK 👉 Runway Alignment and Asymmetric Thrust Compensation

CLICK 👉 Automatic Flight - Go–Around

CLICK 👉 Automatic Flight Windshear Recovery

CLICK 👉 Flight Envelope Protection

CLICK 👉 Audio Panels

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CLICK 👉 Radio Communication System

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CLICK 👉 Electrical Load Management and Load Shedding

CLICK 👉 AC Electrical System Power Sources

CLICK 👉 Integrated Drive Generators (IDGs)

CLICK 👉 Auxiliary Power (External and APU)

CLICK 👉 AC Main Busses

CLICK 👉 Electrical bus Isolation during Autoland

CLICK 👉 AC Standby Power System

CLICK 👉 Main DC Electrical System

CLICK 👉 Main DC Power Distribution

CLICK 👉 Battery Busses

CLICK 👉 Compact Display Format

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CLICK 👉 Electronic Engine Control (EEC)

CLICK 👉 Engine Start and Ignition System

CLICK 👉 Engine Fuel System

CLICK 👉 Engine Oil System

CLICK 👉 Thrust Reverser System

CLICK 👉 Airborne Vibration Monitoring System

CLICK 👉 Fire Warnings

CLICK 👉 Engine Fire/Overheat Detection

CLICK 👉 APU Fire/Overheat Detection

CLICK 👉 Cargo Compartment Fire Detection

CLICK 👉 Fire and Overheat Detection System Automatic Fault Test

CLICK 👉 Fire and Overheat Detection System Manual Fault Test

CLICK 👉 Squib Test

CLICK 👉 Elevator Control

CLICK 👉 Stabilizer Trim

CLICK 👉 Trim Control

CLICK 👉 Stabilizer Trim Position Indication and Greenband

CLICK 👉 Stabilizer Trim Cutout

CLICK 👉 Trimming with Autopilots Engaged

CLICK 👉 Aileron and Spoiler Roll Control

CLICK 👉 Aileron Trim

CLICK 👉 Rudder Control and Trim

CLICK 👉 Rudder Ratio Changers

CLICK 👉 Yaw Dampers

CLICK 👉 Spoilers

CLICK 👉 Speed Brakes

CLICK 👉 Ground Spoilers

CLICK 👉 Flaps

CLICK 👉 Flap Control

CLICK 👉 Flap Sequencing

CLICK 👉 Flap Load Relief

CLICK 👉 Flap Indications

CLICK 👉 Flight Management Computer

CLICK 👉 Actual Navigation Performance

CLICK 👉 Required Navigation Performance

CLICK 👉 Manually Entered Airway Crossing Waypoints

CLICK 👉 Speed/Altitude Constraints

CLICK 👉 Fuel Monitoring

CLICK 👉 Loss of FMC Electrical Power

CLICK 👉 Single FMC Failure

CLICK 👉 Dual FMC Failure

CLICK 👉 Alternate Navigation Waypoints

CLICK 👉 Alternate Lateral Navigation

CLICK 👉 Alternate Navigation Radio Tuning

CLICK 👉 Alternate Navigation CDU Pages

CLICK 👉 Fuel System Description

CLICK 👉 Fuel Quantity

CLICK 👉 Fuel Temperature

CLICK 👉 Fuel Pumps

CLICK 👉 Fuel Crossfeed

CLICK 👉 Main Tank 1 and 4Transfer

CLICK 👉 APU Fuel Feed

CLICK 👉 Operation With Fuel in Center Wing Tank

CLICK 👉 Operation With No Fuel in Center Wing Tank

CLICK 👉 Fuel Jettison

CLICK 👉 Hydraulic Systems

CLICK 👉 Fluid Supply

CLICK 👉 Load Assignments

CLICK 👉 Landing Gear System Description

CLICK 👉 Air/Ground Sensing System

CLICK 👉 Landing Gear Operation

CLICK 👉 Landing Gear Retraction

CLICK 👉 Landing Gear Extension

CLICK 👉 Landing Gear Alternate Extension

CLICK 👉 Nose Wheel and Body Gear Steering

CLICK 👉 Brake Torque Limiter

CLICK 👉 Rejected Takeoff

CLICK 👉 Parking Brake

CLICK 👉 Engine Indication and Crew Alerting System (EICAS)

CLICK 👉 Traffic Advisories (TA) and Display

CLICK 👉 Proximate Traffic Display

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