Warning Systems Flashcards
When does the MASTER CAUTION light illuminate?
- Illuminates 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?
- Conditions which require the immediate attention of the Flight Crew are indicated by 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?
Conditions which require the timely attention of the Flight Crew are indicated by amber caution lights.
How do Master Caution System alerts differ between single/simple and dual-channel faults?
- Single system / channel fault.
o Single channel failure of a dual channel system:
o Illuminates during Master Caution recall.
o If both channels fail:
§ Master Caution, annunciator panel, and amber light illuminate immediately (assuming the amber light is NOT in the field of view).
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?
- This is the 500 foot “Smart” callout.
- When descending below 500-foot radio altitude on approach, a “FIVE HUNDRED” callout is given if:
o An approach OTHER than an ILS or GLS is being used, or
o 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 back-course approach is detected.
What is the reactive wind-shear alert provided by the GPWS?
- The GPWS provides a warning when the aircraft is experiencing a wind-shear event, and operates separately from the weather radar’s predictive wind-shear function.
- GPWS wind-shear alerts are available during takeoff, approach, and landing.
What does an amber ROLL/YAW ASYMMETRY on the PFD indicate?
The autopilot has reached 75% of its total roll authority.
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 displays weather radar returns and turbulence (manual mode) or radar returns and threats (auto mode).
- Turbulence is displayed out to 40 NM for all selected ranges.
What type of wind-shear warnings does the weather radar provide?
- 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?
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?
- Alerts are available approximately 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?
- The weather radar automatically begins scanning for wind shear when:
o Thrust levers are set for take off, even if the respective engine is off or IRS not aligned, or
o In flight below 2300 feet RA (predictive wind shear alerts are issued below 1200 feet RA.
