SAAB 340B Flight Instruments and Navigation Flashcards
The air data system provides pitot and static air pressure information from?
Three electrically heated pitot/static tubes located on the forward fuselage.
Which are on the left?
Standby and Captain
Which are on the right?
First Officer
The Captain incorporates what to drive the related flight instruments and to supply information to the EFIS and autopilot systems?
Captain - Air data computer (ADC)
The Captain incorporates what to drive the related flight instruments and to supply information to the EFIS and autopilot systems?
FO and standby systems utilize conventional pitot/static instruments
S1 and S2 supply what?
S1 system supplies the ADC, S2 system supplies the FO static instruments and pressurization controller
The ADC calculates what?
Altitude, vertical speed, indicated airspeed, true airspeed, VMO, and static air temperature (SAT)
A separate airspeed sensor in the standby pitot/static system also provides?
Airspeed signals to the rudder limiter system and both AHRS for comparison with ADC airspeed signals
In case of static line leak?
Isolated from each other by closing the shutoff valves
The Captains altimeter supplies information to?
The altitude preselector/alerter and the ATC transponders
Captains flight instruments are servo (electromechanical) indicators and receive power from?
Left Avionics Start Bus
First Officer altimeter is equipped with what to prevent instrument seizure due to rapid pressure or temp changes?
A vibrator (supplied from the Right Essential Bus)
Static air temperature is supplied to the ADC from?
The total air temperature probe located on the nose
The aural warning (C-Chord) and ALT on the APA is momentarily activated when?
1,000 feet of the selected altitude
The amber ALT ALERT light extinguishes?
Within 200 feet of the selected altitude
Subsequent deviations greater than how much from the selected altitude trigger visual and aural alerting again?
200 feet of the selected altitude
Where is static air temperature and true airspeed displayed?
On each EHSI
Captain Airspeed warning flag appears?
Test Button pushed
Captain Airspeed warning flag appears?
ADC Failure
Captain Airspeed warning flag appears?
Indicator fails
When does the warning flag on the altitude preselector appear?
Captain altimeter fails or power is lost
Illuminate Red and green arcs on the VSI are?
TCAS resolutions advisory
The main power supply to each AHRS is obtained?
Respective Avionic Bus and controlled by and the 26v
The main power supply to each AHRS is obtained?
Inverter Bus supplies power for the nav ref signal
What happens when the AVION switch is selected off?
Power is automatically transferred to the respective
What happens when the AVION switch is selected off?
Hot Battery Bus for up to 11 minutes to sustain AHRS initialization
Each AHRS receives the following data?
Heading info from respective flux detector unit located in the corresponding wing tip
Each AHRS receives the following data?
Airspeed from the standby IAS
Each AHRS receives the following data?
True airspeed from the ADC
Each AHRS receives the following data?
Vertical speed info from the ADC
Each AHRS receives the following data?
Flight/ground info from the weight-on-wheels system
Each AHRS supplies attitude and heading data to?
The on-side display processor unit (DPU)
Each AHRS supplies attitude and heading data to?
Cross-side RMI
Each AHRS supplies attitude and heading data to?
Flight data recorder
Each AHRS supplies attitude and heading data to?
Autopilot/flight director
Each AHRS supplies attitude and heading data to?
Multiprocessor unit (MPU)
Each AHRS supplies attitude and heading data to?
Captain AHRS provides antenna stabilization signals to the weather radar
