FLIGHT MANAGEMENT Flashcards Preview

B757 SYSTEMS > FLIGHT MANAGEMENT > Flashcards

Flashcards in FLIGHT MANAGEMENT Deck (30):
1

Why does the speeds delete before TO?

there is a ≠ between the outside temperature measured by the aircraft and the Assumed temperature entered for the speed calculation

2

What does NOT cause the IRS ALIGN light to flash?

Respective IRS is powering down
IRS ALIGN light flashes when:
-a 10 min alignment is complete and position entry is required
-there is a position entry error
-an IRS error is detected

3

How long does fast re-alignment takes?

30 seconds

4

What happen when powered from the main battery for more than 5mins?

DC power to the Right IRS is removed

5

When is the right FMC the master?

Left FMC is the master except when either the right AP in CMD or all AP's disengaged, left FD OFF and right FD ON

6

What function is used when entering a hold using LNAV prior to hold fix?

The entry method used is a function of actual airplane track. not a function of heading

7

What does the FMC claculates?

present position
pitch and roll
thrust commands

8

What happen when the airplane passes the TD point and window altitude has not been set lower?

ALT HOLD annunciates
to re-initiate the descent, the MCP altitude must be reset and VNAV re-engaged

9

How can you removed a route offset?

proceeding direct or
deleting the offset waypoints or
entering an offset of 0

10

when is the ILS frenquency changes inhibited?

after LOC or GS capture when 3 AP in CMD

11

What happen if the the slave FMC resyncs the master while LNAV and VNAV mode engaged?

AT disengages, amber line through mode annunciation, FD bar removed, AP caution

12

What is the validity of the navigation database?

28 days
performance database has no validity experition date

13

What happen if an unexpected tailwind is encountered during descent?

DRAG REQUIRED appears at target speed +15Kts
if airspeed reaches a limit, the airplane will leave VNAV PTH and revert to VNAV SPD, flying a safe target speed

14

On what mode does the VOR and DME are autotuned?

HSI mode selector in MAP or PLAN and VOR/DME panel is in AUTO

15

When does the FMC calculate the VNAV descent path?

When an end of descent point is entered
the E/D is normally entered on the legs page as a result of selecting a STAR or approach

16

When the speed window is open, display alternates between IAS and Mach at?

0.8 M in climb
300Kts in descent

17

What does NOT disengage LNAV?

pressing LNAV
LNAV is disengaged by selecting HDG HOLD or HDG SEL or when LOC capture occurs

18

After TO, FD roll commands bank to maintain?

Ground Track

19

What happen when Heading HOLD switch is pressed? (3)

HDG HOLD engages
AFDS commands wings level, then holds heading

20

When the bank limit selector is selected to AUTO, bank is limited to?

25 to 15 degrees depending on true airspeed

21

What is the range available for the VSI?

-8000fpm to +6000fpm in 100fpm increments

22

When does LNAV engages?

when the active route leg is within the turning radius of the airplane

23

When the approach switch is pressed, when can LOC capture?

hen the intercpt track angle is within 120 degree of localizer course

24

with 2 engines operating, at liftoff, FD pitch commands what?

greater of V2+15 or liftoff speed+15

25

If the airplane is floating within 5ft RA for > 2s and GA is pushed?

AP pitch mode will remain in FLARE and the AT GA mode engages

26

During GA mode operation, Roll commands bank to maintain?

ground track

27

pressing EPR switch selects AT EPR mode and?

AT holds reference thrust subject to maximum speed limits

28

When is an increment of nose-up trim applied on approach?

During LAND 2 approach below 330ft RA

29

When is the appropriate speed limit mode annunciation displays?

When the speed limit is approached and MCP/FMC speed is set to exceed a limit

30

When the approach switch is pressed, when can GS capture?

when the intercept track angle is within 80 degrees of Localizer course