REVIEW QUESTIONS – FLIGHT MANAGEMENT, NAVIGATION

Question 1

1. How/when does the FMC receive DME updating?

Answer 1

-The FMC auto tunes 2 scanning DME systems. DME updating is defaulted to OFF

Question 2

2. When the tuned frequency (no decoded name) remain visible on the PFD or ND or shows an incorrect identifier, how do you verify the station identity?

Answer 2

-Identify the station via audio Morse Code

Question 3

3. What does a flashing ALIGN light (white) on the IRS panel during preflight indicate?

Answer 3

-either significant difference between previous and entered position, an unreasonable present position entry, or no present position entry

Question 4

4. What does the FAULT light (amber) on the IRS Mode Selector Unit Indicate?

Answer 4

-a fault in the related IRS ATT and/or NAV modes

Question 5

5. What does an ON DC light (amber) illuminated in flight indicate?

Answer 5

-The IRS is operating on DC power from the switched Hot Battery Bus

Question 6

6. What does a single DC FAIL light (amber) illuminated in flight indicate?

Answer 6

-DC power for the related IRS is not normal, if no other lights, the IRS is operating on normal AC power

Question 7

7. What will happen if both ON DC lights (amber) illuminate?

Answer 7

-back up power to the right IRS is terminated if AC power is not restored within 5 minutes

Question 8

8. IRS ground alignment at high latitudes may take how long?

Answer 8

-5 to 17 minutes

Question 9

9. When does IRS position and ground speed information become available?

Answer 9

-not until the IRS is aligned on the ground

Question 10

10. What does a GPS light (amber), illuminating during Master Caution Recall and extinguishing when the Master Caution System is reset, indicate?

Answer 10

-the failure of a single GPS sensor

Question 11

11. With the FMC Source Select Switch set to NORMAL, how are the FMCs controlling the CDUs and providing input to the autothrottle?

Answer 11

-The left FMC is primary, and provides the autothrottle input and controls the CDU

Question 12

12. How does moving the FMC source select switch to BOTH ON L or R affect LNAV and VNAV?

Answer 12

-selected FMC controls both sides, you see an FMC L or R on opposite map, and LNAV/VNAV will disengage when the selector switch is moved

Question 13

13. What does an illuminated MCDU EXEC light indicate?

Answer 13

-to execute a change in the modified data

Question 14

14. What signifies mandatory data inputs on the MCDU?

Answer 14

-Boxes where the data goes

Question 15

15. when is INSUFFICIENT FUEL on the CDU displayed?

Answer 15

-if predicted fuel at the destination will be 2000 lbs or less

Question 16

16. What are the indications of a right FMC failure?

Answer 16

-FMC alert light and FMC message will illuminate, SINGLE FMC OPERATION will be in both scratch pads, VTK flag on the right display, LNAV/VNAV will disengage if on auto pilot B, and after 25-30 seconds the right nav display will display failure information

Question 17

17. What are the indications of a left FMC failure?

Answer 17

-FMC alert light, the MENU page will appear on both CDUs, VTK flag on left display, LNAV/VNAV will disengage, and after 25-30 seconds the left nav display will display failure information

Question 18

18. What are the indications of a dual FMC failure?

Answer 18

-FMC alert light, the MENU page will appear on both CDUs, VTK flag on both displays, LNAV/VNAV will disengage, and after 25-30 seconds both nav displays will display failure information

Question 19

19. Define Actual Navigation Performance (ANP) and Required Navigation Performance (RNP).

Answer 19

• ANP- is the FMC’s estimate of the quality of its position determination
• RNP - the required accuracy of the navigation capabilities of the aircraft

Question 20

20. When does LNAV engage, regardless of heading?

Answer 20

-when laterally within 3 nm of the active leg

Question 21

21. The descent path starts at the calculated top of descent (T/D) point and includes waypoint altitude restrictions. The path is based on what parameters?

Answer 21

-idle thrust, speedbrakes retracted, descent wind speed decreasing with decreasing altitude, and applicable target speed.

Question 22

22. When does VNAV PTH descent automatically revert to VNAV SPD?

Answer 22

-overspeed reversion, path diversion (aircraft is more than 200’ above the path), or if there is no “TO” waypoint (you are on a vector)

Question 23

23. AT28R, BT28R, and CT28R are waypoints from what type of FMC procedure?

Answer 23

-EO SID

Question 24

24. When will BYPASS appear between two waypoints on the legs page?

Answer 24

-2 waypoints are very close to each other and the aircraft can not turn to capture the leg between the 2 points