GPWS, WINDSHEAR & TCAS Flashcards
GPWS CAUTION
- CAUTION OBSTACLE
- CAUTION TERRAIN
- TERRAIN
- DON’T SINK
- GLIDESLOPE
- SINK RATE
- TOO LOW FLAPS / GEAR / TERRAIN
- BANK ANGLE
GPWS PULL UP WARNING
- PULL UP
- TERRAIN TERRAIN PULL UP
- OBSTACLE OBSTACLE PULL UP
GPWS Maneuver
- Disengage Autopilot
- Disconnect Autothrottle
- Aggressively Apply Max Thrust
- Simultaneously roll wings level & rotate to 20*
- Set the speedbrake lever to down
- If terrain remains a threat, continue up to the PLI, stick shaker or buffer
- Do not change flap or gear configuration until terrain separation is assured
- Monitor radio altimeter for sustained or increasing terrain separation
- When clear of the terrain, slowly decrease pitch attitude and accelerate
GPWS requires input from?
- Air data system
- IRS
- ILS
- Radio Altimeters
- GPS
Altitude used for height measurement is a blended solution of?
- GPS ALT
- BARO ALT
- RAD ALT
- Static Air Temp
The 7 GPWS Alerts are?
MODE
1 - Excessive and severe descent rate
2 - Excessive terrain closure rate
3 - Altitude loss after T/O or G/A
4 - Unsafe terrain clearance when not in the LDG Config
5 - Excessive deviation below an ILS glide slope
6 - Altitude callouts and bank angle callouts
7 - Windshear
PULL UP ALERTS - time to projected time of impact?
20-30 seconds
Shown in solid RED on the HSI
CAUTION TERRAIN / OBSTACLE Alerts - time to projected time of impact?
40-60 seconds
Shown as solid AMBER on the HSI
MODE 1
Excessive descent rate
“SINK RATE” and “PULL UP”
1000’ ~ 2600fpm for SINK RATE
500’ ~ 1800fpm for SINK RATE
1000’ ~ 3500fpm for PULL UP
500’ ~ 2250fpm for PULL UP
MODE 2
MODE 2A and 2B
Excessive Terrain Closure rate
“TERRAIN TERRAIN”
“PULL UP”
2A - with flap not in landing postion
2B - with flap in landing position
MODE 3
Altitude loss after T/O or G/A
“DON’T SINK”
“TOO LOW TERRAIN”
MODE 4
MODE 4A and 4B
Unsafe terrain clearance while not in the landing configuration
4A - “TOO LOW, GEAR”
4B - “TOO LOW, FLAP”
MODE 5
Below glide slope deviation
“GLIDESLOPE”
Alerts 1.3 dots below a glideslope signal
MODE 6
Altitude and bank angle callouts
- 100, 50, 30, 20, 10
- “BANK ANGLE”, > 150’ RA, occurs when AOB 40*
- “BANK ANGLE”, < 150’ RA, progressively to AOB 10* below 30’ RA
- — Inhibited below 5’ RA
MODE 7
WINDSHEAR