Flight Instruments/Displays Flashcards
Airspeed Trend indication
Predicted airspeed in 10 seconds based on current acceleration or deceleration
When does current airspeed box turn amber?
Current airspeed less than maneuvering speed
Indication from Maximum Airspeed Tape?
Max airspeed in relation to the lowest of:
- VMO/MMO
- Landing Gear Speed
- Flap Speed
Pitch Limit Indication
- pitch limit of speed shaker activation for current conditions
- max +30º
When does LOC and G/S pointer turn solid
Within 2 1/3 dot of center
EFIS/EICAS Interface Unit (EIU)/IRS/Air Data Source Selector Priority in AUTO
CA: LEFT/CENTER/RIGHT
FO: RIGHT/CENTER/LEFT
How many display units?
6 Display Units (DUs)
- 2 PFDs, (CA and FO)
- 2 NDs (CA and FO)
- Upper EICAS
- Lower EICAS
How is aircraft system information supplied to the Display Units (DUs)?
3 identical EFIS/EICAS Interface Units (EIUs)
Display Unit Switching Priority
- PFD over ND
- Upper EICAS over LOWER EICAS
Power Source for Integrated Standby Flight Display (ISFD)
Main Battery Bus
Dashes replacing information on PFD
Information in unavailable
Components of Air Data Computer Systems
- 2 or 3 Air Data Computers (ADCs); (L and R) or (L, C, and R)
- 4 pitot tubes (Upper L, Lower L, Upper R, Lower R)
- 4 static sources (Main L, Main R, Alt L, Alt R)
- 2 Angle of Attack vanes (AOAs)
- 2 Total Air Temperature probes (TATs)
What supplies supplies Heading Info to the ND?
Selected Inertial Reference Unit (IRU)
When does Heading reference True North?
When aircraft is North of 82º N latitude or South of 82º S latitude
Position Trend Vector Intervals
- UP to 3 segments depending on MAP range
- each segment is 30 sec
- 30 sec, 60 sec, 90 sec
- based on bank angle and ground speed
VNAV PATH scale indication
- displayed during descend only with selected VNAV PATH
- +/- 400’ deviation
Types of EICAS messages
1) alert messages
2) memo messages
3) Status messages
Priority levels of alert messages
- Warning
- Caution
- Advisory
Where is the most recent EICAS message displayed?
At the top of its priority group
Where is the most recent Memo displayed
At the bottom of the memo messages
What is a Memo message and where are they displayed?
- EICAS memo messages are crew reminders of certain flight crew selected normal conditions
- They display in white at the bottom of the last page of EICAS alert messages on the primary EICAS display.
What does the Status Cue mean and what color?
- new EICAS message exists
- inhibited from engine start to 30 mins after lift off
- color cyan
EIU selector in AUTO
- selects an operable EIU to provide data to EFIS and EICAS
* Selects left, then center, then right
What does pushing the RECALL button do
- redisplays all caution and advisory EICAS messages, when respective non-normal condition exists
- displays first page of messages when multiple pages exist
- redisplays red box for parameters previously exceeded
- displays RECALL indication for one second after switch released
What alert displays are shown or displayed on the PFD?
- TCAS
- Windshear
- GPWS
With a TCAS RA, where do you position the airplane symbol on the PFD?
Traffic avoidance is ensured by adjusting or maintaining a pitch attitude outside the red outlined RA pitch region
How many events can the EICAS Event Record Switch record?
Up to 5 events
Which type of EICAS messages are listed in the DDG
EICAS Status messages
Which engines activate CONFIG EICAS messages if airplane is not configured?
Engines 2 and 3
Conditions for Takeoff CONFIG EICAS Warning
- flaps not in a takeoff position
- body gear not centered
- parking brake set
- Speedbrake lever not in DN detent
- stabilizer trim not in takeoff range
Conditions for CONFIG GEAR EICAS Warning message
the airplane is in flight and any landing gear is not down and locked with:
- any Thrust lever is closed and radio altitude is less than 800 ft, or
- flaps in a landing position (flaps 25 or more)
When does the c-chord sound prior to selected altitude?
900’ prior to selected altitude
What activates ALTITUDE ALERT?
Departing selected altitude by 300’
GPWS features
- look ahead terrain alerts
- predictive windshear alerts
- immediate windshear alerts
- bank angle voice alerts
- immediate alerts for potentially hazardous flight conditions involving impact with the obstacles and the ground
- approach altitude callouts
GPWS Warning and Caution projected impact time
Warning: 20 - 30 sec
Caution: 40 - 60 sec
Master Caution light and beeper inhibition
- 80 knots until 400’ or 20 secs after rotation
When are New Predictive Windshear Warnings inhibited?
100 knts until 50 feet RA
Master Warning and Bell inhibit for FIRE during takeoff
V1 to 400’ or 25 sec after V1
N1 Redline vs N1 Amber Line
Red Line: N1 RPM Operating Limit (Overspeed)
Amber Line: Maximum N1 (limiting thrust in EEC Normal mode)
What is the width of the command speed bug?
5 knots
When is Pitch Limit Indicator displayed and what does it indicate
- Flaps not up
- indicates pitch limit (maximum +30º)
How do you blank Radio Mins/Baro Mins form PFD?
Radio Mins: Below 0
Baro Mins: Below -100
