Avionics Flashcards
Pitot static system malfunction general checklist flow
- Pitot heat switch - check on
- Cockpit instruments - compare (both cockpits including standbys)
- Radar altimeter - use below 5,000 ft AGL
- Proceed to and maintain VMC if possible
EED Internal Failure general checklist flow
If EED modes do not switch
- M pushbutton - press
If EED still failed
- EED O/N/D Power Knob - Cycle off, then Day or Night
If EED still failed (you can view EED data on the MFD)
- Land as soon as practical
Which instruments display zero with no sensor data?
RPM and EGT
General checklist flow for EED sensor failure
If EED is in Slave
- M pushbutton - PRESS
If OFF condition persists
- Cycle power on FCP and RCP EEDs
If OFF condition continues
- Land as soon as practical
When the EED detects an internal failure that does not affect an ability to display engine data, ____ is displayed in the center of the EED
BIT FAIL
General checklist flow for EED Internal BIT Failure
If failed EED is Master
- M pushbutton - PRESS
General checklist flow for EED hot
- If required, monitor engine instruments via the EED in the other cockpit or via the EED display page on the MFD
- Land as soon as practical
If EED HOT is displayed in the EED message window, what happens if you are in the day mode?
Brightness is reduced by 50%
If EED HOT condition persists for 1 minute, what will happen?
The EED lamp shuts off
How can you confirm EGI Failure - GPS?
Check for .8nm/hour accuracy (drift rate) on the EGI page
If a GPS failure occurs, should you cycle EGI power to regain GPS functionality
NO. INS is still availble provided EGI power is not cycled. Cycling the EGI power switch while in flight will force an air alignment which cannot be accomplished without GPS, forcing the EGI into ATT mode. The EGI supplies only attitude and relative heading data in ATT mode and g is not available
General checklist flow for EGI Failure - GPS
Confirm EGI solution at UR-3 on UFCP EGI Page - EGI
Some indications of EGI Failure - INS include…
Attitude removed from HUD and MFD displays
Empty circle replaces EADI on MFD
Heading info on the HUD represents GPS derived ground track
General checklist flow for EGI Failure - INS
- Refer to standby instruments for altitude and heading
- Maintain SLUF
- AAP EGI power switch - OFF (10 seconds minimum) THEN ON (Inflight alignment begins)^ consider all factors before doing this
- LEVEL is displayed in the HUD during EGI ATT mode and into Air-Align mode
- Confirm MFD EGI page transitions into ATT mode and Air-align mode; if not, the inflight alignment has failed
If inflight alignment fails
- Land as soon as practical
Some indications of EGI Failure - TOTAL include…
Attitude information removed from HUD and MFD
Empty circle replaces the EADI
360 will be displayed on the heading scale on the MFD and be blank on the HUD
With a HUD only failure, what should you check?
Check RCP circuit breaker panel (right console) status to verify HUD CBs are in
What is a consideration for UFCP only failure
Set AAP - Both to enable your backup controls
AC power transients (generator reset or successful generator crossover after gen failure) may cause HUD blanking for how long?
3-5 seconds
General checklist flow for HUD and/or UFCP failure
- UFCP RTN key - Press
- HUD brightness level - check
- TST function key - PRESS
- UFCP ON/OFF switch - OFF, THEN ON (wait 5 seconds for HUD/UFCP to reinitialize)
If it’s still failed
- Backup mode control knob - BOTH
- Land as soon as practical
What are 12 indications of MDP failure?
- HUD blanks
- UFCP Blanks
- MFD reverts to backup mode (snowman)
- EGI reverts to backup navigation mode
- Communications and navigation functions operate via FCP B/U control panels
- No DTS control. If video recording was initiated before MDP failure, the DTS will continue to record HUD video without symbology
- No MDP generated audio or visual warnings or caution lights
- PFL inactive
- No TCAS aural warnings or displays on B/U PFR display
- No avionics failure displays
- No pilot IBIT
- Some HOTAS functions won’t work - functional stuff still works
What is the general checklist flow for MFD Failure?
- MFD Switch - Cycle Off, then back on
If MFD is still failed
- MDP Switch - Off, then on (Consider current and projected inflight conditions prior to cycling MDP power.
What is the general checklist flow for MDP degraded?
- PFL - note degraded equipment
- Displays - check for blank or frozen data
- Revert to standby instruments for any failed data
- Use FCP backup control panel for communication and navigation functions as necessary
- MDP switch - OFF, then on (refer to MDP reboot) (consider current and projected inflight conditions prior to cycling MDP power)
What is the general checklist flow for MDP failure?
Note: If MDP fails check center pedestal circuit breaker panel for a popped MDP circuit breaker
- MDP switch - off, then on (refer to MDP reboot)
If MDP still failed and system does not switch automatically
- Backup mode control knob - BOTH
- Proceed to and maintain VMC, if possible.
- Land as soon as practical.
General checklist flow for MDP reboot
- YSAS - check
- UFCP - reset as required
VTR - check
EGI steerpoint - check
Bullseye - check
TOT data - check
IFF - check
If experiencing total UHF failure while in ILS PNS, after selecting COMM ANTENNA switch lower, what warning should be considered
UHF transmissions should be possible but may interfere with the ILS resulting in glide slope raw data and the pitch steering bar to blank
