Navigation

Question 1

What does the IRS ON battery (BAT) light indicate?

Answer 1

IRS operating on backup electrical power (APU hot battery bus)

Question 2

When is full alignment of the IRS required?

Answer 2

When time from lat full alignment to next expected arrival time exceeds 18 hours

Question 3

What CDU pages are available during alternate navigation?

Answer 3

-Alt Nav LEGS
-Alt Nav PROG
-Alt Nav RADIO

Question 4

Can clear air turbulence be sensed by wx radar?

Answer 4

No, turbulence can only be sensed when there is sufficient precipitation

Question 5

How many FMCs are provided?

Answer 5

Two, L&R

Question 6

What factor determines ECON speed?

Answer 6

Cost Index

Question 7

What VNAV pitch mode would you expect at arrow 3 and 4 with a “Climb Via” clearance?

Answer 7

-#3 VNAV SPD
-#4 VNAV PTH

Question 8

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?

Answer 8

VNAV SPD

Question 9

On a -400 Legacy FMC, when does approach phase of the FMS start, also known as “on approach logic”

Answer 9

-When initial fix of an approach sequences
-When runway is active waypoint and within 25NM

Question 10

NG FMC “on approach” logic occurs when?

Answer 10

-Descent phase, flaps out of up
-First waypoint sequenced of active nav database
-Less than 12NM from 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’
-The runway or missed approach point is active waypoint and the airplane is within 25nm of the runway

Question 11

Are there any VMCG issues when applying additional thrust manually during an assumed temperature thrust takeoff?

Answer 11

No, because assumed temp thrust setting is not considered a limitation and VMCG is calculated from the full engine rated thrust

Question 12

What could happen if you advance the thrust levers further then TO 1 or TO 2 fixed derate following an engine failure?

Answer 12

Loss of directional control

Question 13

When does the CDU message INSUFFICIENT FUEL display?

Answer 13

Estimated fuel at destination is less than fuel reserve (FMC RSV) entered on the PERF INIT page

Question 14

Can ATC monitor airplane position on the ground when the transponder is in STBY?

Answer 14

No

Question 15

Are LNAV and VNAV available in alternate navigation?

Answer 15

No

Question 16

What happens when an active database expires in flight?

Answer 16

The database is used until the active database is changed after landing

Question 17

How is the reference thrust changed from TO (D-TO, TO 1, or TO 2) to CON on upper EICAS following an engine failure in flight?

Answer 17

1-Automatically when airspeed > VREF+98
2-Pushing THR switch on MCP
3-Accessing THRUST LIM page in CDU and manually selecting CON

Question 18

What databases are contained in the FMC?

Answer 18

1-Aero Engine (AEDB-Performance)
2-Navigation
3-Operational Program Config (OPC)
4-MAGVAR Tables

Question 19

When will the FMC fail to sequence the active waypoint?

Answer 19

More than 21nm from the active route and not on an offset route

Question 20

-8, what modes of operation are available for the multiscan wx radar?

Answer 20

Manual - Traditional radar with full control over tilt and gain

Automatic-Collects data from multiple scans and merges to create total weather picture

Question 21

-8 Does multiscan wx radar proide trubulence detection capability?

Answer 21

Yes - magenta for moderate to severe when there is sufficient precip, CAT can’t be sensed

Question 22

When armed for takeoff when does VNAV activate?

Answer 22

400’

Question 23

If the FMC cruise atl is FL 250 and clearance alt FL 190 set in MCP, what pitch mode will FMA display when FL 190 captured?

Answer 23

VNAV ALT

Question 24

What VNAV FMA would display on PFD during dep waypoint altitude constraints

Answer 24

VNAV PTH

Question 25

What is difference between RNP and ACTUAL and where is it displayed?

Answer 25

-RNP: Required navigation performance
-ACTUAL: Actual nav performance
-Displayed FMC POS REF page

Question 26

What is a conditional waypoint?

Answer 26

Waypoint based on a time or altitude requirement, and not on a land reference.

Indicated when eventoccurs, and not geographically fixed position, i.e… when reaching 500’…