Flight Instruments Flashcards
The electronic instrument displays receive sensor data from what component?
The Air Data Computer
The EADI and EHSI operate in what modes?
- Enroute
- Approach
If the pitch values approach their limits, red chevrons are used to indicate what?
Nearest direction for a level flight attitude recovery
The EHSI displays a 360° rotating compass scale divided into 5° and 10° increments and referenced to what?
A white triangular heading index (lubber line)
Pulling out the HDG knob does what?
Resets HDG bug to present aircraft heading
The upper left corner of the HSI displays what?
- Distance to next selected point
- Aircraft groundspeed
- Time to go to next point
When the EHSI is in the HSI normal mode, pressing the MAP button changes the display to what mode?
Navigation map mode
The bearing pointer select buttons are used to cycle the EHSI bearing pointers through what three modes?
- VOR navigation source display
- GPS navigation source display
- Declutter mode
On the EHSI, the course deviation bar indicates the centerline of the selected course relative to what?
Aircraft symbol
For ILS glidepath, what is displayed on the right side of the instruments with a green deviation pointer which moves in relation to the scale to indicate glidepath center with respect to aircraft position?
Stationary vertical scale
The VSI indicates what two things?
- Direction of vertical motion
- Rate of motion
What range does the VSI show climbs or descents?
0 to 6000 feet per minute
The ASI Mach number window is blanked below what Mach?
.40 Mach
As altitude increases, max operation airspeed (Vmo) will do what?
Decrease
The baro-set correction knob is used to set what into the altimeter so it displays correct altitude indications?
Pressure
The standby instruments can be used for a limited time in the event of a failure of what primary system?
Electrical
What is the red and white “barber pole” on the ASI?
A velocity/Mach limiting pointer
How is the standby attitude indicator caged?
Pulling and turning the PULL TO CAGE knob
True or False: The standby altimeter is operated by static pressure from the primary pitot/static system
False
What does the AOA computer receive inputs from?
- AOA vane
- Flap position microswitch
- Landing gear
What does the white triangle at 4.9 units on the AOA gauge indicate?
Max range
What does the white diamond at 8.8 units on the AOA gauge indicate?
Max endurance
What does the green arc on the AOA gauge indicate?
Normal approach speed
What does the red radial on the AOA gauge indicate?
Stall
What does a higher the number on the AOA gauge indicate?
Greater the Angle of attack
What radial on the AOA gauge indicates a stall?
18 units
How many units/knots will the AOA gauge be at when the stick shaker is activated?
15-16 units or 5 to 10 knots above stall speed
When the AOA test switch is in the low position, what will the indexer and gauge show?
- Amber donut
- 10.5 units
The center arrow on the accelerometer moves up and down to indicate what?
Current G load
What is the CWS interconnected with?
MASTER WARN and MASTER CAUT annunciators
What components make up the EFIS system?
- EFIS control panel
- EADI
- EHSI
When the EHSI is in HSI normal mode pressing the map button (MAP) changes the display to which mode?
Navigation map