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AJX: AW > GPWS, WINDSHEAR & TCAS > Flashcards

GPWS, WINDSHEAR & TCAS Flashcards

1
Q

GPWS CAUTION

A
  • CAUTION OBSTACLE
  • CAUTION TERRAIN
  • TERRAIN
  • DON’T SINK
  • GLIDESLOPE
  • SINK RATE
  • TOO LOW FLAPS / GEAR / TERRAIN
  • BANK ANGLE
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2
Q

GPWS PULL UP WARNING

A
  • PULL UP
  • TERRAIN TERRAIN PULL UP
  • OBSTACLE OBSTACLE PULL UP
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3
Q

GPWS Maneuver

A
  • 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
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4
Q

GPWS requires input from?

A
  • Air data system
  • IRS
  • ILS
  • Radio Altimeters
  • GPS
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5
Q

Altitude used for height measurement is a blended solution of?

A
  • GPS ALT
  • BARO ALT
  • RAD ALT
  • Static Air Temp
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6
Q

The 7 GPWS Alerts are?

A

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

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7
Q

PULL UP ALERTS - time to projected time of impact?

A

20-30 seconds

Shown in solid RED on the HSI

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8
Q

CAUTION TERRAIN / OBSTACLE Alerts - time to projected time of impact?

A

40-60 seconds

Shown as solid AMBER on the HSI

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9
Q

MODE 1

A

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

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10
Q

MODE 2

MODE 2A and 2B

A

Excessive Terrain Closure rate

“TERRAIN TERRAIN”
“PULL UP”

2A - with flap not in landing postion
2B - with flap in landing position

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11
Q

MODE 3

A

Altitude loss after T/O or G/A

“DON’T SINK”
“TOO LOW TERRAIN”

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12
Q

MODE 4

MODE 4A and 4B

A

Unsafe terrain clearance while not in the landing configuration

4A - “TOO LOW, GEAR”
4B - “TOO LOW, FLAP”

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13
Q

MODE 5

A

Below glide slope deviation

“GLIDESLOPE”
Alerts 1.3 dots below a glideslope signal

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14
Q

MODE 6

A

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
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15
Q

MODE 7

A

WINDSHEAR

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16
Q

Windshear Warning System

A

Provides an immediate windshear alert when an excessive downdraft or tailwind is occuring

17
Q

Windshear immediate-alert warnings

A
  • Enabled below 1500’ RA

- GPWS windshear detection begins at rotation

18
Q

Windshear T/O precautions?

A
  • Use MAX T/O THR
  • Most FLAP possible
  • Use the longest runway
  • Increase Vr to the performance limit gross weight rotation speed, not to exceed actual gross weight Vr plus 20kts
  • Avoid STAB TRIM change until the a/c is stabilised
19
Q

“WINDSHEAR AHEAD, WINDSHEAR AHEAD” prior to V1, what would you do?

A

Reject as a general rule

20
Q

“WINDSHEAR AHEAD, WINDSHEAR AHEAD”, after V1, what would you do?

A
  • Perform the windshear escape maneuver;
  • At Vr, rotate at the normal rate to 15*, then once airborne, complete the escape maneuver;
  • If you can’t stop before the end of the runway due to a strong tailwind shear, continue to 2000’ from the end of the runway, then rotate, even if the airspeed is low. Ensure MAX THR set
21
Q

“MONITOR RADAR DISPLAY”

A

Maneuver as required to avoid

22
Q

APPR / LDG Precautions

A
  • Use runway with less chance of windshear
  • Use Flap 25
  • Stabilised approach early
  • Monitor path using vertical speed and VASI
  • IIncrease target approach speed
  • Review the windshear escape procedure
23
Q

“GO AROUND, WINDSHEAR AHEAD”

A

You guessed it!

24
Q

Unacceptable flight path deviations, indicating Windshear?

A
  • 15kts
  • V/S 500fpm
  • 5* pitch attitude
  • 1 dot displacement on the glideslope
  • unusual thrust position for a significant time
25
Q

Windshear escape maneuver - AUTOPILOT ON

A
  • G/A switch, Push. Note: If GA mode isn’t avail, disengage AP and disconnect AT, fly manually
  • Verify GA mode announciation
  • Verify thrust advanced to GA PWR
  • Speedbrake, Down.
  • Monitor system performance
  • Do not change gear and flap config
  • Do not attempt to regain lost airspeed until windshear is no longer a factor
26
Q

Windshear escape maneuver - MANUAL FLIGHT

A
  • Autopilot … Disengage
  • G/A switch … Push
  • Aggressively apply MAX THR
  • Autothrottle … Disconnect
  • Simultaneously roll wings level and rotate to 15*
  • Speedbrake … Down
  • Follow FD G/A guidance
  • — Do not exceed the PLI
  • Do not change gear and flap config
  • Do not attempt to regain lost airspeed until windshear is no longer a factor
27
Q

Windshear phraseology?

A

WINDSHEAR ESCAPE

WINDSHEAR ESCAPE COMPLETE, RESUMING ___

WINDSHEAR ESCAPE COMPLETED, REQUEST ___

UNABLE, WINDSHEAR ESCAPE

28
Q

Predictive windshear, general description

A

Provides alerts when it detects disturbed air ahead of the aircraft which contain moisture or particulate matter which fits a known pattern of windshear activity

29
Q

Predictive windshear, on the ground - when does it activate?

A

When WX radar selected or thrust levers advanced for T/O

Then after 12 seconds from the above, the alerts become available

30
Q

Windshear is inhibited when?

A

CAUTION: 80kts to 400’ AGL

WARNING: 100kts to 50’ AGL

31
Q

Predictive windshear alert area?

A

Cone picture out to 3nm or 1.5nm

32
Q

Predictive windshear, in the air - when does it activate?

A
  • Starts below 2300’ AGL
  • Alerts below 1200’ AGL
  • CAUTION area as per the cone..
  • WARNING area as per the cone..
33
Q

TCAS RA - Procedue

A
  • Disengage autopilot
  • Disconnect autothrottle
  • Smoothly adjust pitch and thrust to satisfy RA command
    ○ IF IN LANDING CONFIG
    § Disengage autopilot
    § Disconnect autothrottle
    § Thrust levers - full forward
    § Flaps 20
    § Smoothly adjust pitch and thrust to satisfy RA command
    § Positive climb and gear up
  • Do not use FD commands
34
Q

What are the TCAS Calls to ATC?

A
  • “ANA 8256, TCAS RA”
  • “ANA 8256, CLEAR OF CONFLICT, RETURNING TO ___”
  • “ANA 8256, CLEAR OF CONFLICT, ___ RESUMED”
  • “ANA 8256, UNABLE DUE TCAS RA”
35
Q

TA - times, calls and how is it displayed?

A

20-48 seconds,
“TRAFFIC TRAFFIC”,
AMBER FILLED CIRCLE

36
Q

RA - times and how is it displayed?

A

15-35 seconds,
VOICE ALERT,
RED FILLED SQUARE

37
Q

Reaction time for an RA?

A

5 seconds first time, 2.5 seconds for the second warning

38
Q

What are the TCAS inhibits?

A
  • Increase descent < 1450’ RA
  • Descent RA < 1100’ RA
  • ALL RA’s < 1000’ RA
  • ALL VOICE < 500’ RA
  • GPWS + WINDSHEAR IMMEDIATE ALERTS - INHIBITS ALL TCAS ALERTS

AJX: AW (22 decks)

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