Warning Systems Flashcards
GPWS provides the following alerts:
Excessive descent rate
Excessive terrain closure rate
Altitude loss after takeoff or go around
Excessive deviation glide slope or path
Unsafe terrain clearance when not in landing config
Improper config
Reaction winsdshear
When does the GPWS glide slope warning go off?
When he aircraft passes through 1,000 ft AGL on approach and excessive deviation exists
Altitude loss after takeoff. When below 1,500 AGL and aircraft is losing altitude what two alerts could be heard?
“Don’t sink”
“Too low terrain”
When does the “Too low Gear” aural warning happen?
When the aircraft descends below 500’ AGL AND SLOWER THAN 190 knots
When does the aural warning “Too low Flaps” happen?
If flaps aren’t extended to Flaps 30 or greater
Aircraft descends below 245’ AGL
Speed less than 159 knots
The “ Glide slope” aural warning happens when?
Below 1,000’ AGL on approach:
- 1.3 dots below glide slope
- 2 dots below glide slope volume/ interval increases
When does the aural warning “Bank Angle” happen?
Altitude between 30-130’, bank angle exceeds 10 degrees
When does aircraft GPWS give winsdshear aural alerts?
When below 1,500’ RA
EGPWS will generate a “Caution Terrain “ aural under what conditions?
40-60 seconds from projected impact
EGPWS will generate a “Terrain Terrain Pull Up“ aural under what conditions?
20-30 seconds from projected impact
The protection feature Terrain Clearance Floor (TCF) provides what aural warnings and when?
-Available throughout entire flight
-700’ protection up to 15NM from the airport
-lowers as you get closer to the airport
“TOO LOW TERRAIN”
What runways are in the worldwide database for the GPWS TCF and RFCF?
Runways at least 3,500’ long
Runway Field Clearance Floor dimensions of protection?
5NM out from airport
Up to 300’ AGL
What does dotted red terrain mean on the ND?
More than 2,000’ above airplanes altitude
What does dotted amber terrain mean on the ND?
Terrain 500’ (250’ w gear down) below to 2,000’ above airplanes current altitude
What does dotted green terrain mean on the ND?
Terrain is 2,000’ below to 500’ below current altitude
What does dotted magenta terrain mean on the ND?
No terrain data available
What does black terrain mean on the ND?
Terrain more than 2,000’ below altitude
RA closure in seconds?
25
TA closure in seconds ?
40 seconds
What are the inputs to the Stall Management Yaw Damper computers?
Alpha vane (AOA)
ADIRUs (spd, alt, etc)
Anti-ice controls
Wing config
Air/ground sensors
Thrust computers
FMS
When does the takeoff configuration warning horn sound?
On the ground, thrust levers advanced for takeoff:
- Stabilizer trim not set in the green band
- Parking Brake set
- Spoiler are not down
- Leading edge devices are not configured for takeoff
- trailing edge flaps are not in the takeoff range (1-25)
When does the flashing amber altitude box appear over the current aircraft altitude?
Appears if the aircraft exceeds a 200’ deviation
The flashing amber altitude box remains flashing until what happens?
Deviation is less than 200’
Aircraft altitude deviation becomes greater than 900’
A new altitude is selected
Predictive winsdshear automatically scans for winshear when:
Thrust levers advanced for takeoff
In flight below 2,300 AGL
THERE WONT BE ANY AURAL OR VISUAL ALERTS UNLESS THE PLANE IS BELOW 1,200’ AGL
Predictive windshear caution alerts:
Within 25 degrees either side
Within 3 miles ahead
Predictive windshear warning alerts:
Within 3 miles on ground
Within 1.5 miles in flight
On takeoff: “windshear ahead”
On approach: “go-around windshear ahead”
When are the predictive caution and warnings enabled and inhibited for takeoff?
Caution enabled:
- from advancing power for takeoff until 80 knots
Warning enabled:
- from advancing power for takeoff until 100 knots
- from 50’ until 400’
All disabled above 1,200 AGL
Predictive windshear caution and warnings on approach?
Caution enabled:
- 1,200’ to 400 AGL
Warning enabled:
- 400’ to 50’
In what modes can TCAS traffic be displayed ?
Center MAP
APP
VOR
MAP
