Max Warning Systems Flashcards
When does the MASTER CAUTION light illuminate?
When a caution occurs outside the normal field of vision of the Flight Crew, the respective System Annunciator light(s) and the two MASTER CAUTION lights illuminate. The lights remain illuminated as long as the caution condition exists, or until the Flight Crew resets the system.
What color lights require immediate attention of the Flight Crew?
Red Warning Lights
These lights are in the pilots’ primary field of vision and indicate:
* engine, wheel well, cargo, or APU fires
* autopilot and autothrottle disengages
* landing gear in unsafe conditions
What color lights require timely attention of the Flight Crew?
Amber Caution Lights
How do Master Caution System alerts differ between single/simple and dual-channel faults?
A single fault does not illuminate the System Annunciator and MASTER CAUTION lights. However, this type of fault is stored in the Master Caution System. Pushing the system annunciator recalls the simple fault on the System Annunciator panel.
A dual-channel fault will cause the System Annunciator and MASTER CAUTION lights to illuminate immediately.
What is the lowest elevation, relative to the aircraft, that red indicates on the terrain display?
- Green: terrain elevation is more than 500 ft below the aircraft altitude
- Amber: terrain elevation is between 500 ft below and 2000 ft above the aircraft
altitude - Red: terrain elevation is more than 2000 ft above the aircraft altitude
The FLAP INHIBIT switch is used to inhibit which GPWS callout(s)?
Prevents TOO LOW FLAPS aural alert, regardless of flap position
When is the “500” RA callout provided?
- an approach other then ILS or GLS is used, or
- a valid localizer frequency is tuned and:
- the flight path is not within ±2 dots of a localizer beam, or
- the flight path is not within ±2 dots of a glideslope beam, or
- a backcourse approach is detected
What is the reactive windshear alert provided by the GPWS?
Windshear alerting is active under the following conditions:
* During takeoff, from rotation until reaching an altitude of 1500 ft AGL
* During approach, from an altitude of 1500 ft AGL to 10 ft AGL
* During a missed approach until an altitude of 1500 ft AGL is reached
Windshear aural warnings are accompanied by (red) WINDSHEAR on the attitude indicators. The (red) WINDSHEAR warning indication will remain displayed for as long as the aircraft is exposed to conditions in excess of the warning alert threshold.
What does an amber ROLL/YAW ASYMMETRY on the PFD indicate?
When the autopilot has reached 75% of its total roll authority:
* the amber alert, ROLL/YAW ASYMMETRY, appears on the PFD and HUD
* the bank pointer and slip/skid indicator become outlined
* the slip/skid indicator becomes solid amber if the slip/skid indicator is deflected greater than 25% of its width
How is the radar selected on?
Selecting WXR on the EFIS control panel activates the weather radar on the associated ND. Deselecting WXR, or selecting TERR, deactivates the weather radar and removes weather information from the associated ND
What is provided when WX+T is selected on the Radar control panel?
WX+T: displays weather radar returns and turbulence (manual mode) or weather radar returns and threats (auto mode); turbulence is displayed out to 40 nm for all selected ranges
NOTE: The WX+T switch must be selected and the WXR set to AUTO mode to show core, associated, and path threat assessment, as well as level 2 turbulence and predictive overflight protection.
What type of windshear warning(s) does the weather radar provide?
Predictive Windshear Alert provides Warnings and Caution.
The weather radar uses radar imaging to detect disturbed air prior to entering a windshear.
The weather radar provides windshear alerts only for windshear events containing some level of moisture or particulate matter.
Is radar turbulence detection capable of detecting clear air turbulence?
No
Flight Crews must continue to rely on traditional windshear avoidance methods as the weather radar is not capable of supplying predictive windshear in clear air
How long after activation does the PWS take until cautions or warnings can be provided?
Alerts are available approximately 12 seconds after the weather radar begins scanning for windshear.
Predictive windshear alerts can be enabled prior to takeoff (manually) by pushing the EFIS control panel WXR switch to activate the radar
How is the Predictive Windshear System (PWS) activated?
The weather radar automatically begins scanning for windshear when:
* thrust levers are set for takeoff, even if engine is off or IRS not aligned, or
* in flight below 2300 feet RA (predictive windshear alerts are issued below 1200 feet RA)
What is the aural alert for a PWS Caution?
“MONITOR RADAR DISPLAY” aural callout.
The predictive windshear CAUTION is generated whenever a detected windshear event occurs within ±30° of the aircraft heading and within 3 nm of the aircraft.
Enabled during takeoff, below 1200 ft RA.
Predictive windshear symbol on the ND shows windshear position (expanded MAP, center MAP, expanded VOR or expanded APP modes only)
How is the Runway Awareness and Advisory System (RAAS) activated?
RAAS operates without any actions required by the Flight Crew.
RAAS requires these conditions for proper operation:
* Terrain/runway are contained in the EGPWS’ terrain database
* The GPS signals are available and meet the minimum accuracy
* The RUNWAY INHIBIT switch is in the NORM position
How are Resolution Advisories (RAs) displayed on the PFD?
Red lines on the PFD indicating pitch regions to avoid in order to resolve the traffic conflict.
The aircraft symbol must be outside the TCAS pitch command area to ensure traffic avoidance.
What is the indication of a Traffic Advisory (TA)?
“TRAFFIC, TRAFFIC,” which sounds once and is then reset until the next TA occurs.
The Traffic Advisory (TA) symbol appears as an amber dot at the proper range and relative bearing to the other aircraft with the ND mode in expanded MAP, center MAP, expanded APP, or expanded VOR and TFC is selected on the EFIS control panel
What is the difference between the amber MAINT light on the aft overhead panel and the magenta MAINT box on the MDS SYS page?
The illumination of the amber MAINT light on the aft overhead panel indicates that a system fault exists that must be reviewed by Maintenance
This light is not to be confused with the magenta MAINT menu tab located on the MFD Systems (SYS) page.
