Terms in this set (87)
What formats can be selected on the multi-function display (MFD)?
• FMS plan map
• FMS map
• Navaid sector
What is the purpose of the Display Reversionary Panel (DRP)?
The switch is used to change the format on the associated MFD to a PFD or EICAS format.
What is the purpose of the Source Selector Panel?
If there is a failure of an air data computer, attitude/heading computer, EICAS or display control panel (DCP), this panel will allow an alternate source for the system to be selected.
Explain the ATT HDG switch on the source selector panel?
• Norm: The pilot and co-pilot electronic flight displays receive data from onside AHRS.
• Position 1 and 2: The pilot's and copilot's electronic flight displays receive data from AHRS 1 in position 1 and AHRS 2 in position 2. There will be an amber message on the PFD and or MFD displaying the source.
Explain the AIR DATA switch on the source selector panel?
• Norm: The pilot and co-pilot electronic flight displays receive data from the on-side air data computer (ADC).
• Position 1 and 2: The pilot and copilot's electronic flight displays will display data from ADC 1 in position 1 and ADC 2 in position 2. On both PFDs there will be displayed an amber ADC 1 or 2 depending on selection.
Explain the DSPL CONT switch on the source selector panel?
• Norm: The pilot and copilot's electronic flight displays are controlled bv the respective DCPs.
• Position 1 and 2: In position 1, the pilot and copilot's electronic flight displays are controlled by the pilot's DCP In position
2, the copilot's DCP controls the pilot and copilot's electronic flight displays. On both MFDs and PFDs there will be an amber source message.
Explain the EICAS switch on the source selector panel?
When either EDI or ED2 EICAS display fails, the remaining operative ED can display all EICAS pages.
• Example: EDI fails and the primary page automatically transfers to ED2 and this makes the ECP inactive. To regain the use of the ECP, select ED2 on the source selector panel. Tliis will reactivate the ECP and all pages can now be displayed on ED2. If ED2 fails, selecting EDI allows all pages to be viewed on EDI through the ECP.
What is the name of the panel that allows airspeeds to be set?
The Air Data Reference Panel (ARP).
What is the name of the panel that allows the NAV SOURCE to be set?
The Display Control Panel (DCP).
What is the name of the panel that allows autopilot commands to be set?
The Flight Control Panel (FCP).
Explain the EFIS Comparison Monitor?
The primary flight display (PFD) continuously monitors itself in comparison to the other PFD. When the EFIS PFDs detect a comparison disagreement between each other an amber EFIS COMP MON is displayed on the primary page of the EICAS. The data message associated with the disagreement will flash for 5 seconds on the PFDs and then stay steady as long as the comparison error exists.
What does an amber HDG message on the PFDs indicate?
There is a difference of more than 6 degrees between each AHRS.
What does an amber ROL message on the PFDs indicate?
There is a difference of more than 4 degrees roll or 3 degrees if the glide slope is captured.
What does the amber PIT message on the PFDs indicate?
There is a difference of more than 4 degrees pitch or 3 degrees after the glide slope is captured.
What does the amber IAS message on the PFDs indicate?
There is a difference of more than 10 knots between PFDs.
What does the amber ALT message on the PFDs indicate?
There is more than 60 feet difference between PFDs.
What does the amber LOC message on the PFDs indicate?
There is a difference between the localizer receivers.
What does the amber GS message on the PFDs indicate?
There is a difference between the glide slope receivers.
What does the amber RA message on the PFDs indicate?
There is a difference between the radio altimeters below 1000 feet AGL.
What systems do the pitot static system supply information to?
• Air data computers (ADC)
• Stall protection system (SPS)
• Cabin pressure acquisition module (CPAM)
• Standby air data system (ADS)
• Mach transducer of the stall protection system
Where is the total air temperature (TAT) probe located?
Located under the copilot's side window.
Explain the TAT probe?
Total air temperature is determined by this probe and supplied to the ADCs. The ADCs then use the TAT information to calculate and display on the EFIS the true airspeed (TAS), static air temperature (SAT), and total air temperature (TAT).
How is the DH/MDA removed from the PFD?
When displayed, it can be removed by pressing the center of the DH/ MDA knob.
How can individual speeds be removed from the PFD?
When the speed is selected, pressing the center of the SPEED REFS knob will remove the speed displayed at that time.
What would indicate a good test of the radio altimeter?
Press the RA TEST button and the RA should indicate 50 feet. When the button is release, the reading should return to 0.
How is the speed reference manually changed between Mach and IAS?
Press the center of the SPEED KNOB.
Explain the low and high-speed cues?
The checkerboard at the top and bottom of the airspeed scale indicates these cues. The top indicates Vmo/Mmo and the bottom indicates a calculated airspeed of 1.06Vs.
What is the green line that moves around on the airspeed scale?
This is the Low Speed Awareness Cue, which indicates 1.26Vs.
Explain the airspeed Trend Vector?
The trend vector moves in response to the aircraft acceleration or deceleration. It indicates the predicted speed in 10 seconds.
When will the Mach window appear in the top left corner of the PFD?
When aircraft speed is above Mach .45 the Mach window will appear. It will be removed when the Mach is below .40 Mach.
What is the range of the of the barometric altitude readout?
-1,000 to 50,000 feet
What happens to the altitude alert when the aircraft is passing through 1,000 feet above or below the pre-selected altitude?
There is an aural tone and the pre selected altitude bugs flash.
What happens when the aircraft deviates from the selected altitude?
When the deviation reaches 200 feet from the pre-selected altitude, an aural tone is heard and the pre selected altitude indicators flash yellow. When it is only a minor deviation the pre-selected altitude flashes magenta.
What is meant when the pre-selected altitude turns cyan?
The latitude tracking between the ADCs is outside tolerances.
What is the range of the MDA setting?
0 to 15,000 feet
What is the range of the vertical speed field?
The scale range is 0 to +/- 4,000 fpm. The digital readout ranges from 0 to 15,000 feet.
What else can be displayed on the VSI other than vertical speed?
TCAS advisory deviations.
What is the range of the radio altitude display?
-20 to 2,500 feet AGL
What are the different colors of the radio altitude display?@The digital readout is green from decision height (DH) to 2,500 feet and amber equal or lower than DH.
What happens if the radio altitude fails?
An RA in a red box appears and the RA tape and digit readouts are removed.
Where is altitude information presented other than the normal radio digital radio readout provided?
Next to the altitude tape is a scale, which indicates altitudes from 0 to 1,100 feet. The indication is green but turns amber at DH and then turns green again at touchdown.
What is the digital range selection of the decision height display?
0 to 999
What will happen if the ADC airspeed, vertical speed or altitude fails?
Red air data flags will replace the system information on the PFD.
What warning is provided if the aircraft descends to a negative altitude?
A yellow NEG will be displayed next to the altimeter on the PFD.
What system supplies the attitude and heading information?
The attitude and heading reference system (AHRS).
What components does the AHRS system consist of?
The AHRS system is made up of 2 computers, 2 flux detector units and 2 remote compensator units.
What panel provides AHRS mode selections?
The COMPASS control panel.
When would you use the DG mode on the COMPASS control panel?
When the aircraft is in an area of magnetic field disruptions or failure of heading information from the AHRS system. It is not intended for long¬term use.
How long does it take for initialization of the AHRS system?
Initialization occurs automatically when electrical power is established with the aircraft stationary. In MAG mode initialization takes approx¬imately 70 seconds and 10 minutes in DG mode.
What provides rate and acceleration data for the AHRS computer?
There are two sensors for each AHRS computer. These sensors have four pairs of piezoelectric accelerometer sensors that are on a rotating wheel.
Explain the SLEW switch on the COMPASS control panel?
The switch is operational in DG and MAG mode. In MAG mode it will cause the displayed heading to move but it will move back to its original position when the slew switch is released. In DG mode the SLEW switch will cause the heading to slew in the direction selected and it will stay when released.
What happens when DG is selected on the COMPASS control panel?
The flux detector data no longer provides heading information.
Can the aircraft be moved during AHRS ground alignment process?
The aircraft should not be moved. The PFD will display the message ATT/HDG ALIGNING DO NOT TAXI during the alignment process. If there is motion detected during the alignment process, the AHRS will re-initialize.
Can the AHRS conduct the alignment process in flight?
Airborne alignment is possible and will take 10 to 35 seconds. This would be needed if there were a power interruption. Most of the same flags on
the PFD that appear during the ground alignment will appear in flight. The aircraft should remain in straight and level flight.
What is the color of the glide slope triangle when showing onside and cross-side data?
The triangle is green for on side and amber for cross side.
What is the value of the two dots above and below the reference line for vertical deviation?
Each dot is 1/4 degree.
When the vertical deviation on the glide slope display senses excessive vertical deviation the triangle flashes in amber color. How can this flashing amber be corrected?
The flashing amber diamond can only be canceled when the condition is corrected.
What happens if the glide slope information is not valid?
There will be a red-boxed GS flag in the position of the glide slope pointer and scale.
What is the purpose of the amber alpha margin indicator (AMI) during a wind shear indication?
The AMI represents the maximum pitch attitude allowed up to 30 degrees. This pitch attitude is just before the activation of the stick shaker.
How long is the AMI displayed during a wind shear warning?
It is displayed a minimum of 60 seconds or until the aircraft has exited the wind shear condition.
What are the two types of wind shear conditions and how are they displayed?
The two types are increasing (caution) and decreasing performance (warning) windshear. Increasing performance is indicated by an amber wind shear presented on the PFD with the AMI and FD indicating 15 degrees.
During a decreasing performance windshear, a red WINDSHEAR warning is presented on the PFD along with an aural "windshear". The FD indicates 15 degrees and the AMI is presented at 30 degrees.
Explain the De-Clutter function?
During an unusual attitude all nonessential information is cleared from the PFD. The trip points for the de-clutter function are pitch angle in excess of +30 or -20 degrees, or roll in excess of 65 degrees. The only information presented is:
• Vertical speed
• Autopilot engage indicator
What occurs when the heading bug is selected off scale?
A dashed line appears from the center of the heading indicator to the bug and a digital heading indication will appear on the PFD.
What occurs when the heading or attitude information is invalid?
For heading information a red-boxed MAG, DG or TRUE will appear and the heading display is removed from the PFD. For attitude a red-boxed ATT appears and the attitude information is removed from the PFD.
If DME hold is on, will the FMS auto tune on that side?
How would you know if DME hold is activated?
An amber H replaces the NM of the navigation source indication on the PFD and the station identifier is removedThere is an amber "H" on the RTU next to the frequency.
Why is the station identifier removed from the navigation source indi¬cation when DME hold is activated?
The data for the identifier is supplied by the DME.
How would you find all the VOR and DME stations in use by the FMS?
Bring up the VOR/DME STATUS page and this will list all of the stations in use.
How are the bearing indications displayed on the PFD?
The BRG switches on the DCR
What bearing indications can be presented on the PFD?
• VOR 1, VOR 2
• ADF 1, ADF 2
• FMS 1, FMS 2 (FMS 2 only on dual FMS aircraft)
What is the distance of the lateral deviation scale of the HSI needle?
• Each dot equals 5 degrees in VOR.
• Each dot equals 1 degree in LOC.
• Each dot equals 5 NM in FMS.
What does an amber YD displayed on the upper left side of the attitude indicator indicate?
It indicates that both yaw dampers have been disengaged.
What does an amber boxed A or E on the attitude indicator indicate?
An A indicates that the FCC has detected an aileron out of trim condition. An E indicates the FCC has detected an elevator out of trim condition.
How is a display control panel (DCP) failure indicated?
A red-boxed DCP flag on the PFD and MFD indicates failure of a DCP.
What occurs if a display has an over temperature?
When an over temperature condition is sensed, a red DISPLAY TEMP message will appear on the display. At this point all information is removed from the display but will return when the display cools.
What is the source of time data for the UTC clock on the top of the MFD?
The time is provided by the pilot's clock and if that fails, it will be provided by the first officer's clock.
How is weather radar displayed on the MFD?
Turn the radar on and select the WX/TERR button on the DCP.
What is the purpose of the NAV SOURCE selector switch on the DCP?
Select the Nav Source to be displayed on the MFD. The selections available are:
• NAV SECTOR
• FMS MAP
• FMS PLAN MAP
What is the purpose of the PUSH X-SIDE button on the DCP NAV SOURCE Selector Knob?
The button allows for the selection of cross-side course information to be displayed when using the HSI and NAV sector formats.
Explain the purpose of the FMS plan map selection on the NAV SOURCE?
This map is used during flight plan set up and en route modifications. North will always be displayed at the top. Selection of the FMS legs page, the flight plan route can be verified using the up or down keys on the FMS.
What MFD formats can the radar be displayed on?
• Navaid sector map
• FMS map
What static system supplies the standby instruments?
The standby pitot static system (P3 and S3) supplies the standby instruments.
Is electrical power required to operate the standby instruments?
No electrical power is required to operate the standby instruments. However electrical power is required to operate the friction vibrator for the standby altimeter.
What is the navigation source for the standby attitude indicator localizer and glidesiope?
The source is VHF navigation receiver 1 or the backup tuning unit. During normal operations the backup tuning unit will be in STBY and it will display what is selected in NAV and COM 1.
If electrical power is lost to the standby attitude system, how long is attitude information displayed?
For a minimum of 9 minutes.
How long will the power OFF flag be displayed on the standby attitude indicator after initial power is applied?
The flag will remain for approximately two minutes.
What four conditions will display the power OFF flag on the standby attitude indicator?
When there is no output AC power from the internal inverter.
• Insufficient gyro speed.
• PULL TO CAGE knob in caged position.
• No input power signal.
What supplies the aircraft time information?
Original Style: The two pilot clocks with the Captains being the primary source.
GPS Style: Upon power up if there is a valid GPS signal the clocks will be automatically set. If there is not a GPS signal or there is a need manually override the GPS signal, then the pilots can set the clock.