Warning Systems Flashcards
Recall features of the Weather Radar system (2)
- Incorporates a predictive windshear function
* Detects and displays ground mapping and areas of severe weather
Recall features of the Central Aural Warning System (CAWS)
• The aircraft Central Aural Warning System consists of tones such as horns,
chimes, and bells accompanied with voice messages for selected warnings
• Each voice message is preceded by its associated tone warning
Recall when a takeoff warning will occur (6)
A takeoff warning will sound anytime aircraft is on the ground, both throttles are
advanced and any of the following:
• Brakes – parking brake on
• Flaps – Not in agreement with setting entered into FMS
• Slats – Not in takeoff
• Spoilers – Panel(s) extended 2 degrees or more
• Stabilizer – Not in green band
• Rudder Trim – Not centered
Recall features of the Predictive Windshear system
• Detects microburst windshear hazards during takeoff and landing
• Automatically activated in flight when aircraft is below 2300’ radio altitude (even ifradar is OFF)
NOTE: Radar must be ON to receive any predictive alerts on the ground (during takeoff)
• Flight deck aural alerts are generated below 1200’ radio altitude and a microburst is
detected
Recall Predictive Windshear Alert Level “Warning”
Three levels of alert for windshear conditions
WARNING - CAUTION - ADVISORY
DURING TAKEOFF
NOTE: On takeoff, warnings are inhibited from 100 knots until reaching 50’ AGL
• Max effective range 3 NM
• WINDSHEAR icon displayed on ND
• Red WINDSHEAR AHEAD icon displayed on PFD
• Aural warning: “WINDSHEAR AHEAD- WINDSHEAR AHEAD”
DURING LANDING
NOTE: Warnings are inhibited below 50’ AGL
• Max effective range 1.5 NM
• WINDSHEAR icon displayed on ND
• Red WINDSHEAR AHEAD icon displayed on PFD
• Aural warning: “GO AROUND - WINDSHEAR AHEAD”
Recall Predictive Windshear Alert Level “Caution”
NOTE: On takeoff, warnings are inhibited from 100 knots until reaching 50’ AGL
• Generated for windshear events outside the warning area
• Max range 3 NM
• WINDSHEAR icon displayed on ND
• Amber WINDSHEAR AHEAD icon displayed on PFD
• Aural warning: “MONITOR RADAR DISPLAY”
Recall Predictive Windshear Alert Level “Advisory”
- Generated for windshear events outside the warning and caution area
- Max range 5 NM
- WINDSHEAR icon only displayed on ND
Recall features of the Electronic Instrument System (EIS) Alerting
The EIS Alerting System displays alerts and applicable consequences on the aircraft Display Units (DU)
Pushing the associated cue light on the System Display Control Panel (SDCP)
displays the associated SD synoptic and resets the MASTER CAUTION or MASTER WARNING lights
EIS alerts are categorized into four levels, each with unique characteristics:
Describe Level 3 Alert - Boxed Red (3 visuals)
Level 3 Alerts appear as red text, inside a
red box, with a red triangle on the left side.
• Indicate emergency operational conditions that require immediate crew attention
• Red MASTER WARNING Lights illuminate
• Boxed RED alert on the EAD, with red triangle
• Associated cue light on SDCP illuminates
EIS alerts are categorized into four levels, each with unique characteristics:
Describe Level 2 Alert - Boxed Amber
- Indicate abnormal operational conditions that require immediate crew attention
- Amber MASTER CAUTION lights illuminate
- Boxed AMBER alert on the EAD
- Associated cue light on SDCP illuminates
EIS alerts are categorized into four levels, each with unique characteristics:
Describe Level 1 Alert - Amber
- Indicate conditions that may require maintenance attention before takeoff, a logbook entry, confirmation of desired condition, etc.
- Amber MASTER CAUTION lights may illuminate
- AMBER alert on EAD, SD page, or STATUS page
- Associated cue light on SDCP may illuminate
EIS alerts are categorized into four levels, each with unique characteristics:
Describe Level 0 Alert - Cyan
- Generally operational, or aircraft status information
* CYAN alert on EAD
Recall what consequences are
NOTE: When some level 1, 2 or 3 alerts are displayed, statements called
CONSEQUENCES are displayed on the associated synoptic
Recall the inhibit features of the aircraft’s alert system during takeoff
• Level 3 Alerts and associated MASTER WARNING lights are inhibited from V1 to
400’ RA, but no longer than 25 seconds in flight
• Level 2 or 1 Alerts and associated MASTER CAUTION lights are inhibited (depending on the system) at throttle
advance, 80 knots, or V1-20 knots
• The takeoff inhibits are released (system dependent) at 400’ RA or after 25 seconds in flight (whichever comes first) or above 1000’ AFE or 120 seconds in flight (whichever comes first)
• Level 0 Alerts are not inhibited
Recall indications of a completed and successful aircraft Takeoff Essential Items
Checklist
• During taxi, aircraft takeoff requirements are automatically checked sequentially
• When all takeoff items have been satisfied, a green takeoff-checklist-complete
box is displayed on the EAD
• The green box is removed once the aircraft becomes airborne
Recall indications of a completed and successful aircraft Landing Essential Items
Checklist
• During approach, essential aircraft landing requirements are automatically checked
o Landing gear down
o Flaps in landing range
o Spoilers armed
• When all landing items have been satisfied, a green landing-checklist-complete box
is displayed on the EAD
• The green box is removed once the aircraft is on the ground
NOTE: Do not delay calling the LANDING CHECKLIST complete while waiting
for the “Green Box” to appear
Recall features of the aircraft Enhanced Ground Proximity Warning System (EGWPS) Terrain Switch (PUSH)
Terrain Switch
• Push – Inhibits enhanced EGPWS features
• Illuminates OVRD light
• Basic EGPWS modes not affected
Recall features of the aircraft Enhanced Ground Proximity Warning System (EGWPS) GND PROX WARN Switch (FLAP OVRD, NORM)
- FLAP OVRD – Inhibits warning when landing with less than normal flaps (25 or 40)
- NORM – Normal position
Recall features of the aircraft Enhanced Ground Proximity Warning System
WX/TERR Switch (PUSH)
- Push – Selects weather radar display on ND
- Push again to deselect weather
- Terrain is displayed when weather radar is not selected
Recall features of the aircraft Enhanced Ground Proximity Warning System
BELOW G/S Switch
- Indicates excess deviation below glideslope
- Light accompanied by vocal warning “GLIDE SLOPE”
- Pushing switch below 1,000’ RA inhibits or cancels warning
Recall features of the aircraft Enhanced Ground Proximity Warning System
General
• The aircraft EGPWS interfaces with the radio altimeters, ADIRUs, VIAs, ILS and
landing gear position lever to detect dangerous aircraft proximity to the ground
• Effective below 2500 feet
Several Modes to detect: • Excessive descent rates • Excessive terrain closure rates • Altitude loss after takeoff • Unsafe terrain clearance • Descent below glide slope • Altitude callouts/Excessive bank angle warning
Recall features of the aircraft Traffic Alert and Collision Avoidance System (TCAS)
RA - Resolution Advisory • Displayed on the ND and PFD to display potential conflicts • Imminent collision threat • Depicted by a red square on the ND • Voice warnings will command climb or descent, as required, and notify
TA - Traffic Advisory • TA threats depicted by amber circles on the ND • Voice warning: “TRAFFIC, TRAFFIC” • Corrective action will not be required
TA - Traffic Advisory • TA threats depicted by amber circles on the ND • Voice warning: “TRAFFIC, TRAFFIC” • Corrective action will not be required
Recall features of the Reactive Windshear Alert and Guidance System (WAGS)
• During takeoff (available from ground shift to 1500’), approach and go-around, the reactive WAGS system provides visual/aural warnings, and AP/FD windshear guidance throughout a windshear event
• Visual warnings are RED for decreasing performance windshear and AMBER for
increasing performance windshear
• On takeoff, WINDSHEAR will flash on the PFD and FMA speed/altitude windows
followed by three cycles of “TAILWIND SHEAR” or “HEADWIND SHEAR” aural
warnings
• On approach and go-around, the same visual and aural annunciations activate.
HOWEVER, during an approach, guidance will not come on unless a go-around is
initiated by pressing either GA button OR advancing the throttles past the 95% GA
thrust limit after windshear is detected
• GPWS is inhibited while following the FDs during windshear guidance. TCAS is also
inhibited except for TA advisories on the ND
NOTE: Once the GA is initiated, the ATS, if off, will come on automatically
and advance to GA thrust AND the flight directors, if off, will pop up and
provide windshear guidance until the windshear event no longer exists
GPWS is inhibited while following the FDs during windshear guidance. TCAS is also
inhibited except for TA advisories on the ND
