B-747 NAVIGATION EXAM QUESTIONS AND ANSWERES WITH
COMPLETE SOLUTIONS VERIFIED
What does the IRS ON battery (BAT) light indicate on the Overhead Maintenance
Panel?
IRS operating on backup electrical power (APU hot battery bus)
When is full alignment of the IRS required?
When the time from the last full alignment to the next expected arrival time exceeds 18
hours
What CDU pages are available during Alternate Navigation?
•ALTERNATE NAVIGATION LEGS •ALTERNATE NAVIGATION PROGRESS
•ALTERNATE NAVIGATION RADIO
Can clear air turbulence be sensed by weather radar?
No, turbulence can only be sensed when there is sufficient precipitation
How many FMCs are provided?
Two FMCs (flight management computers L and R)
What factor determines "Econ" speed?
Cost Index
What VNAV Pitch mode would you expect at arrow #3 and arrow #4 with a "climb
via" clearance?
#3 VNAV SPD
#4 VNAV PTH
, If you are flying an approach with the FMC in "on approach" logic, and the
airplane rises more than 150 feet above the path, the FMA pitch mode will change
from VNAV PTH to what pitch mode display?
VNAV SPD
On a -400f Legacy FMC, when does the approach phase of the FMS start, also
known as "On approach Logic"?
When the initial fix of an approach sequences
When the runway is the active waypoint and within 25NM
NG FMC, "on approach" logic occurs under any of the following conditions?
•Descent phase flaps out of up
•First waypoint sequenced of active nav database
•Aircraft less than 12 NM from the destination airport direct to or intercept course-to
active waypoint and a manually entered end of descent altitude constraint is lower than
the destination airport plus 500 ft
• The runway or missed approach point is the active waypoint and the airplane is within
25 NM of the runway
Are there VMCG issues when applying additional thrust manually during an
assumed temperature thrust takeoff?
No, because the assumed temperature thrust setting is not considered a limitation and
VMCG is calculated from the full engine rated thrust.
What could happen if you advance the thrust levers further then TO 1 or TO 2
fixed derate following an engine failure?
Loss of directional control
COMPLETE SOLUTIONS VERIFIED
What does the IRS ON battery (BAT) light indicate on the Overhead Maintenance
Panel?
IRS operating on backup electrical power (APU hot battery bus)
When is full alignment of the IRS required?
When the time from the last full alignment to the next expected arrival time exceeds 18
hours
What CDU pages are available during Alternate Navigation?
•ALTERNATE NAVIGATION LEGS •ALTERNATE NAVIGATION PROGRESS
•ALTERNATE NAVIGATION RADIO
Can clear air turbulence be sensed by weather radar?
No, turbulence can only be sensed when there is sufficient precipitation
How many FMCs are provided?
Two FMCs (flight management computers L and R)
What factor determines "Econ" speed?
Cost Index
What VNAV Pitch mode would you expect at arrow #3 and arrow #4 with a "climb
via" clearance?
#3 VNAV SPD
#4 VNAV PTH
, If you are flying an approach with the FMC in "on approach" logic, and the
airplane rises more than 150 feet above the path, the FMA pitch mode will change
from VNAV PTH to what pitch mode display?
VNAV SPD
On a -400f Legacy FMC, when does the approach phase of the FMS start, also
known as "On approach Logic"?
When the initial fix of an approach sequences
When the runway is the active waypoint and within 25NM
NG FMC, "on approach" logic occurs under any of the following conditions?
•Descent phase flaps out of up
•First waypoint sequenced of active nav database
•Aircraft less than 12 NM from the destination airport direct to or intercept course-to
active waypoint and a manually entered end of descent altitude constraint is lower than
the destination airport plus 500 ft
• The runway or missed approach point is the active waypoint and the airplane is within
25 NM of the runway
Are there VMCG issues when applying additional thrust manually during an
assumed temperature thrust takeoff?
No, because the assumed temperature thrust setting is not considered a limitation and
VMCG is calculated from the full engine rated thrust.
What could happen if you advance the thrust levers further then TO 1 or TO 2
fixed derate following an engine failure?
Loss of directional control
