Flt Mgmt, NAV

Question 1

How/when does the FMC receive DME updating?

Answer 1

DME updating is defaulted to OFF and must be manually selected onthe FMC NAV OPTIONS page

Question 2

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

Answer 2

verify the identity of the tuned navigation station using audio Morse code

(Sec 11.010 p 5)

Question 3

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

Answer 3

• significant difference between previous and entered positions or unreasonable present position entry
• no preset position entry

(Sec 11.010 p 12)

Question 4

What does the FAULT light (amber) on the IRS Mode Selector Unit indicate?

Answer 4

system fault affecting the related IRS ATT and/or NAV modes – illuminated Master Caution

(Sec 11.010 p 12)

Question 5

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

Answer 5

IRS operating on DC power from Switched Hot Battery Bus (AC Power problem) – causes IRS on Master Caution

Question 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 all other lights are extinguished, IRS is operating normally on AC power. Causes IRS on Master Caution to illuminate

Question 7

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

Answer 7

AC is not normal for either IRS

Sec 11.010 p 12

Question 8

IRS ground alignment at high latitudes may take how long?

Answer 8

up to 17 minutes

Sec 11.010 p 17

Question 9

When does IRS position and ground speed information become available?

Answer 9

when IRS is aligned on the ground

Sec 11.010 p 11

Question 10

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

Answer 10

failure of a single GPS sensor

Sec 11.010 p 21

Question 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

Left FMC is primary controlling CDUs and A/T

Sec 11.020 p 3

Question 12

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

Answer 12

Moving the switch will cause LNAV and VNAV to disengage

Sec 11.020 p 3

Question 13

What does an illuminated MCDU EXEC light indicate?

Answer 13

active data has been modified but not executed

Sec 11.020 p 7

Question 14

What signifies mandatory data inputs on the MCDU?

Answer 14

Boxes signify mandatory data input

Sec 11.020 p 10

Question 15

When is INSUFFICIENT FUEL on the CDU displayed?

Answer 15

when predicted fuel at destination will be 2000 lbs or less

Sec 11.020 p 19

Question 16

What are the indications of a right FMC failure?

Answer 16

• FMC alert light
• “SINGLE FMC OPERATION” in both scratch pads
• VTK on right Nav Display
• LNAV and VNAV will disengage if A/P B is in use

(Sec 11.020 p 21)

Question 17

What are the indications of a left FMC failure?

Answer 17

• FMC alert light
• MENU page on both CDUs
• VTK on left Nav Display
• LNAV and VNAV if A/P B in use

(Sec 11.020 p 21)

Question 18

What are the indication of a dual FMC failure?

Answer 18

• FMC alert light
• MENU page on both CDUs
• VTK on both Nav Displays
• LNAV and VNAV disengage

(Sec 2.010 p 21)

Question 19

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

Answer 19

ANP is the quality of FMC position determination – 95% probability within radius
RNP the level of position accuracy needed for a specific phase of flight

(Sec 11.030 pp 7-8)

Question 20

When does LNAV engage, regardless of heading?

Answer 20

Within 3 NM of active route leg

Sec 11.030 p 9

Question 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 and Geometric Descent Path

Sec 11.030

Question 22

When does VNAV PTH descent automatically revert to VNAV SPD?

Answer 22

• Limit speed reversion
• Path diversion
• No “to” waypoint

(sec 11.030 p 29)

Question 23

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

Answer 23

EO SID

Sec 11.050 p 24

Question 24

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

Answer 24

two waypoints are close together and normal turn construction cannot provide continuous path

(Sec 11.060 p 6)