FCOM B747 EXAM QUESTIONS AND
CORRECT DETAILED ANSWERS WITH
RATIONALES (VERIFIED ANSWERS)
|ALREADY GRADED A+
Turbulence Penetration Airspeed/Mach - Answers - ✔✔ Turbulent air penetration
speed is: 290 KIAS/0.82M to 310 KIAS/0.85M, whichever is lower. Severe turbulence
will cause large and often rapid variations in IAS. DO NOT CHASE THE AIRSPEED.
Is this speed an AFM Limitation? - Answers - ✔✔ No, this is not an AFM limitations, but
are provided for Flight Crew information.
OEB-OEJ. Continuous ignition must be on when operating in? - Answers - ✔✔
moderate to heavy rain
• hail or sleet
• moderate to severe turbulence
• volcanic ash
• when entering icing conditions
Is continuous ignition automatically turned on when NAI is turned ON, either manually or
via the automatic detection system (as installed), or must it be manually selected on? -
Answers - ✔✔ It is automatically turned ON.
If if continuous ignition is not available, what can be used instead? - Answers - ✔✔
Standby Ignition
What is displayed on the EICAS confirming that Continuous Ignition is ON? - Answers -
✔✔ CON IGNITION ON memo message is displayed.
What is the top part (-40˚C) of a CB known as? - Answers - ✔✔ The "wet top" or "radar
top".
Is turbulence possible in this and the clear air above the visible portion of the cloud? -
Answers - ✔✔ Yes, particularly in vigorously building cloud.
OEB-OED, OJA-OJU
WX-T mode should be used for all normal flight conditions. What range is the turbulence
detection feature operational in? - Answers - ✔✔ 40nm or less. (50nm of less, so select
40nm)
CORRECT DETAILED ANSWERS WITH
RATIONALES (VERIFIED ANSWERS)
|ALREADY GRADED A+
Turbulence Penetration Airspeed/Mach - Answers - ✔✔ Turbulent air penetration
speed is: 290 KIAS/0.82M to 310 KIAS/0.85M, whichever is lower. Severe turbulence
will cause large and often rapid variations in IAS. DO NOT CHASE THE AIRSPEED.
Is this speed an AFM Limitation? - Answers - ✔✔ No, this is not an AFM limitations, but
are provided for Flight Crew information.
OEB-OEJ. Continuous ignition must be on when operating in? - Answers - ✔✔
moderate to heavy rain
• hail or sleet
• moderate to severe turbulence
• volcanic ash
• when entering icing conditions
Is continuous ignition automatically turned on when NAI is turned ON, either manually or
via the automatic detection system (as installed), or must it be manually selected on? -
Answers - ✔✔ It is automatically turned ON.
If if continuous ignition is not available, what can be used instead? - Answers - ✔✔
Standby Ignition
What is displayed on the EICAS confirming that Continuous Ignition is ON? - Answers -
✔✔ CON IGNITION ON memo message is displayed.
What is the top part (-40˚C) of a CB known as? - Answers - ✔✔ The "wet top" or "radar
top".
Is turbulence possible in this and the clear air above the visible portion of the cloud? -
Answers - ✔✔ Yes, particularly in vigorously building cloud.
OEB-OED, OJA-OJU
WX-T mode should be used for all normal flight conditions. What range is the turbulence
detection feature operational in? - Answers - ✔✔ 40nm or less. (50nm of less, so select
40nm)
