737 Systems: Flight Instruments Flashcards
What directly provides inertial position and track data to the associated FMC?
The Air Data Inertial Reference Unit (ADIRUs)
If both Captain and FO pitot tubes are INOP, how is airspeed provided?
By the AUX pitot tube to the Standby airspeed
What are the standby instruments?
-Standby Mag compass
-Standby attitude indicator
-Integrated Standby Flight Display (ISFD)
-Standby Altimeter/Airspeed indicator
-Standby RMI
How is the ISFD battery pack and charger powered?
By the Battery Bus
If the outboard display fails, is automatic switching available and if so, where is the PFD displayed?
Automatic switching is available, and the PFD show up on the inboard DU
What indicates maximum operating speed?
Red and Black hashmarks on the top of the speed tape
How are maneuver speeds indicated?
Displayed as a vertical amber bar extending from the top of the minimum speed bar
With dual FMC failures, how are airspeeds set for takeoff and landing?
On the Engine Display Panel with the Outer knob on SPD REF
How is the flight path angle and drift angle displayed on the PFD?
With the Flight Path Vector (White Airplane)
What are Pitch Limit Indicators, and when do they populate?
The PLI are the amber “eyebrows” on the PFD and display when airspeed approaches stick shaker or when flaps are extended
What does pushing STD on the EFIS control panel do?
Puts Standard Altimeter setting in your Baro
What is the difference in CDS alerts on the PFD and when would you see them?
On the ground only, before second engine start.
-White CDS MAINT = Good to go (dispatchable)
-Amber CDS FAULT = Do not operate (non-dispatchable)
What causes the IAS DISAGREE alert?
CA and FO airspeed indications disagree by more than 5 kts for 5 continuous seconds
What causes the ALT DISAGREE alert?
Altimeters disagree by more than 200ft for 5 continuous seconds
What causes the AOA DISAGREE alert?
Left and Right AOA values disagree by more than 10 degrees for more than 10 continuous seconds
