Flight Instruments/Navigation

Question 1

Airspeed Trend Vecor

Answer 1

Indicates predicted airspeed in 10 seconds based on current acceleration or deceleration

Question 2

Bottom of Airspeed Amber Bar

Answer 2

indicates the maximum maneuvering speed. This airspeed provides
1.3 g maneuver capability to high speed buffet

Question 3

Top of Airspeed Amber Bar

Answer 3

Top of amber bar indicates minimum maneuvering speed. This airspeed provides:
• 1.3 g maneuver capability to stick shaker below approximately 20,000 feet

Question 4

Top of Airspeed Black/Red Bar

Answer 4

Minimum Airspeed

Indicates the airspeed where stick shaker activates

Question 5

Altitude Trend Vector

Answer 5

• altitude to reach in 6 sec based on current vertical speed

- length of vector is 1/10th of vertical speed

Question 6

Components of Large Display System (LDS)

Answer 6

• Adaptive Flight Displays (AFD) - CA AFD, Center AFD, FO AFD
• Display Control Panels (DSP) - L and R
• Display Dimmer Panels (DDP) - L and R
• Graphics Generator Units (GGU) - 3 located in avionics bay

Question 7

IRS Selector Switch

Answer 7

Blank/Normal Position - Right IRS is the source for Right GGU

ALTN - Center IRS is source for Right GGU

Question 8

Flashing Align Light

Answer 8

Alignment cannon be completed

– Significant difference between previous and entered positions
– Unreasonable present position entry
– No present position entry

Question 9

IRS ON DC light illuminated

Answer 9

Normal AC power for the related IRS has failed and the IRS is operating on DC backup
power from the hot battery bus (AC power not normal)

Question 10

Description of IRS

Answer 10

• 3 IRUs
• IRS Mode Control Panel
• Calculates:
  aircraft position
  acceleration
  track
  vertical speed
  groundspeed
  true and magnetic heading
  wind speed and direction.

Question 11

IRS Alignment times

Answer 11

Normal: 10 mins (7 remains displayed for 3 mins)
Fast: 30 sec (NAV to Align and back to NAV)
High Altitude: 17 mins (selector in Align mode)

Question 12

Normal and Standby Power Source for IRS

Answer 12

Normal - AC power
Standby - Aircraft Main Battery

*left and center IRS limited to 5 mins on standby power

Question 13

IRS output information

Answer 13

• IRS Outputs (“HATSWAP”):

o H - Heading
o A - Acceleration
o T - Track
o S - Speed
o W - Wind
o A - Attitude
o P - Position

Question 14

When does ON APPROACH logic become active

Answer 14

• approach procedure become active route
• 12NM to destination
• MAP is active waypoint and within 25 NM
• Flaps Extended