Warning Systems Flashcards
When does the MASTER CAUTION light illuminate?
When any caution occurs outside the normal field of view.
o A caution condition will normally illuminate a caution light.
o Exception is “ENGINE OVERHEAT”.
What colors require immediate attention from the flight crew?
red warning lights.
o These lights are generally located in the pilot’s primary field of vision and indicate:
§ engine, wheel well, cargo, or APU fires.
§ autopilot / auto throttle disconnects, landing gear unsafe.
§ Parking Brake.
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 in certain redundant systems, AKA a “simple fault,” does not
illuminate the System Annunciator and MASTER CAUTION lights.
This type of fault is stored in the Master Caution System. Pushing the system annunciator recalls the simple fault on the System Annunciator panel.
If both channels fail, then a MASTER CAUTION will be triggered
What is the lowest elevation, relative to the aircraft, that red indicates on the terrain display?
2000 feet above the aircraft.
The FLAP INHIBIT switch is used to inhibit which GPWS callouts?
Prevents “TOO LOW FLAPS” aural alert regardless of flap position.
When is the “500” RA callout provided?
Called a “Smart” callout
- When descending below 500-foot radio altitude on approach “FIVE HUNDRED” callout is given if:
-An approach OTHER
than an ILS or GLS is
being used, or
-a valid localizer
frequency is tuned and: - the flight path is not within +/- 2 dots of a localizer beam, or glideslope beam, or
- a back-course approach is detected.
What is the reactive wind-shear alert provided by the GPWS?
“Windshear” aural warnings are through the speakers and headsets at preset volumes and accompanied by WINDSHEAR on the attitude indicators.
The WINDSHEAR warnings remain for as long as the conditions are in excess
of the warning threshold
The GPWS provided a warning are separate from the WX radar’s predictive wind-shear function.
All Reactive warnings are active to 1,500’
ie-
*T/O until reaching 1,500’
*Approach, 1,500’ AGL to
10”
*Missed approach to 1,500’
What does an amber ROLL/YAW ASYMMETRY on the PFD indicate?
The autopilot has reached 75% of its total roll authority and slip/skid indicator deflects >25% of its width
How is the radar selected on?
- Selecting WXR on the EFIS 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 = WX Plus Threats
*WX: displays weather radar returns without threat information
*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.
NOTE: Turbulence detection requires presence of detectable precipitation. Clear air turbulence cannot be detected by radar.
What type of wind-shear warnings does the weather radar provide?
Predictive Windshear Alert provides Warnings and Caution
The weather radar provides wind shear alerts only for wind shear events containing some level of moisture or particulate matter.
The weather radar is not capable of supplying predictive wind shear in
clear air.
Is the radar turbulence detection capable of detecting clear air turbulence?
NO,
The weather radar is not capable of supplying predictive wind shear in clear air.
How long after activation does the PWS take until cautions or warnings can be provided?
Available about 12 seconds after the weather radar begins scanning for wind shear.
- Predictive Wind Shear (PWS) can be enabled manually prior to take off by pushing the EFIS control panel WXR switch to activate the radar.
How is the Predictive Wind-shear System activated?
WX radar automatically begins scanning for wind shear when:
-Thrust levers are set for takeoff, even if
the respective engine is off or IRS not
aligned, or
-In flight < 2300 feet RA
* predictive wind shear alerts are issued
below 1200 feet RA
Predictive windshear alerts can be enabled prior to takeoff (manually) by pushing
the EFIS control panel WXR switch to activate the radar.
What is the aural alert for a PWS Caution?
MONITOR RADAR DISPLAY
How are Resolution Advisories (RA’s) displayed on the PFD?
Appears as a red box.
What is the indication of a Traffic Advisory (TA)?
Aural “Traffic, Traffic” with an amber circle at range and relative bearing showing altitude relative to your aircraft and if it’s climbing or descending
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 amber MAINT light on the overhead panel indicates that a system fault exists that must be reviewed by maintenance.
- The purple MAINT light on the MFD systems page is an index for routine maintenance down loads. (need to check answer).
