15 Warning Systems Flashcards
(30 cards)
🛑 TAKEOFF CONFIG
on ground when throttles advanced if aircraft not correct T/O config. WITH aural warning
🛑 CABIN ALTITUDE
cabin altitude ABOVE 10.000 feet, extinguished below. WITH aural warning
STALL warning test
MACH warning test
S - on ground with AC power available
M - prohibited in air
Landing Gear warning cutout switch, when pushed:
Silences LG configuration warning at flaps up - flaps 10 and above 200 feet RA
Selected altitude alert
Current altitude alert
selected: white box around selected altitude, BOLD box around current altitude: between 900’-200’ before reaching selected altitude
Current: amber blinking box around current altitude until 200 feet deviation. The flashing continues when: between 900’-200’ before reaching selected altitude or selecting a new altitude
BELOW GS light, when pushed:
🟧 INOP, illuminated:
Inhibits ground proximity Glideslope alert when below 1000’ RA
🟧: GPWS computer malfunction OR power is lost: has inputs from ILS, IRS, Stall management computer, ADIRU, EFIC control panel, radio altimeter, FMC
GROUND PROXIMITY SYSTEM TEST
- push
- in flight
On ground:
- lights: below GS, GPWS INOP
- ND: TERR FAIL, TERR TEST, TERRAIN (caution)
- aural sounds: “Glideslope, PULL UP, WINDSHEAR, TERRAIN TERRAIN PULL UP, OBSTACLE OBSTACLE PULL UP, AIRSPEED LOW”
- alerts: PULL UP + WINDSHEAR
Followed by:
- alerts: radio altimeter based, bank angle, wind shear, look ahead terrain,
- callouts: appraoch
PROHIBITED in flight
Terrain Display
- armed
- aircraft 500’ or more above highest terrain in selected range
A - when in: PLN, CTR VOR, CTR APP
- Solid 🟩: highest elevation terrain
- High-density dotted 🟩: intermediate elevation terrain
- Low-density dotted 🟩: lowest elevation terrain
Terrain Display
- when aircraft less than 500’ above highest terrain in selected range
- exception
- when does it automatically show
- Solid 🛑: look ahead terrain warning active
- Solid 🟧: look ahead terrain caution active
- Dotted 🛑: terrain > 2000’ above aircraft altitude
- Dotted 🟧: terrain 500’ below- 2000’ above aircraft altitude
- Dotted 🟩: terrain 2000’ below - 500’ below aircraft altitude
- Dotted 🟪: no terrain data available
- Exception: terrain within 200’ of nearest airport RUNWAY elevation does not show
Auto show:
- neither pilot has terrain display selected, and
- Look-ahead terrain alert occurs, and
- EXP MAP, VOR, APP, center MAP
Predictive wind shear
- automatically on ND when
- predictive wind shear alert occurs
- neither pilot has WXR radar display selected
- in EXP MAP, VOR, APP, CTR MAP
TCAS CONTROL
- transponder mode selecter
A - sets TCAS display at UPPER elevation limits
B - sets TCAS display at LOWER elevation limits
TAKEOFF CONFIG WARNING
- TE flaps not F1-F25 and/or uncommanded position
- LE devices not TO position or uncommanded position
- speed brake lever NOT down
- HYD fluid to ground spoilers interlock valve
- STAB trim not in (green) TO range
- parking brake set
LANDING GEAR LEVER HORN
- F UP- F10
- F15 - F25
- F30 - F40
WHEN LG NOT DOWN AND LOCKED
F UP - F10
- alt< 800’ RA, either thrust lever set between IDLE - 20 DEG thrust lever angle or OIE and operative thrust lever < 34 DEG thrust lever angle
- landing gear warning horn can be silenced until descending below 200’ RA
F 15 - F 25
- either thrust lever between IDLE - 20 DEG thrust lever angle or OEI and operative engine thrust lever below 34 DEG
- Landing gear warning horn CAN NOT be silenced
F 30 - F 40
- Regardless of thrust lever position
- Landing gear warning horn CAN NOT be silenced
PSEU monitors:
- pseu light illuminate for single warning:
– when extinguished - pseu light inhibited
T/O + LDG config warnings, landing gear warnings, air/ground sensing
P - ONLY after landing
W – when parking brake is set or both engines turned off
P - in flight, thrust levers advanced for TO power until 30 seconds after landing
Stick shaker
- where and when
One on each control column vibrate and are always armed except on the ground
SMYD computers determine when stall warning is required upon:
- sends signals to
- Alpha Vane AoA outputs
- ADIRU outputs
- air/ground sensing
- FMC outputs
- anti-ice controls
- wing configurations
- thrust
S - PLI
Altitude alerting
- inhibited
I - when trailing edge flaps are extended to F25 or greater OR when G/S is captured
GPWS
- provides alerts based on
- alerts are for:
- Windshear warning priority over
P - Radio altitude and combination of: altitude, airspeed, glide slope deviation, and airplane configuration
Alerts are for:
- excessive descent rate
- excessive terrain closure rate
- altitude loss after Takeoff or Go-around
- unsafe terrain clearance when not in landing configuration
- excessive deviation below the ILS or GLS glide slope or the FMC generated flight path angle
- excessive deviation below glide path
W - over look-ahead terrain alert and radio altitude based alerts
Look-ahead terrain alerting
- based on:
Based: on airplane’s position, barometric altitude, vertical flight path, and ground speed
Look-ahead terrain alerting
- TERRAIN TERRAIN, PULL UP
- CAUTION TERRAIN
- TOO LOW, TERRAIN
T - 20-30 seconds from impact with terrain shown 🟥 on NAV display: PULL UP on both attitude indicators
C - 40-60 seconds from impact with terrain shown 🟧 on NAV display
T - Descent below unsafe radio altitude: PULL UP on both attitude indicators
Radio altitude based alerts
- PULL UP
- TERRAIN
- DON’T SINK
- GLIDESLOPE
- SINK RATE
- TOO LOW, FLAPS
- TOO LOW, GEAR
- TOO LOW, TERRAIN
ON ALL PULL UP ON BOTH ATTITUDE INDICATORS
PULL - follows SINK RATE alert if excessive descent rate continues, follows radio altitude based TERRAIN alert if excessive terrain closure continues
TERRAIN - Excessive terrain closure
DON’T SINK - Excessive altitude loss after takeoff or go-around
GLIDESLOPE - deviation below GS or GP, ground proximity light cancels or inhibits below 1000’RA when pushed
SINK RATE - excessive descent rate
TOO LOW, FLAPS - unsafe terrain clearance at low airspeed with flaps not in normal landing position. Push flap inhibit, inhibits the alert
TOO LOW, GEAR - unsafe terrain clearance at low airspeed with LG not down. Push gear inhibit inhibits the alert
TOO LOW, TERRAIN - unsafe terrain clearance at high airspeed with either LG not down or flaps not in LDG position. Follows DON’T SINK if another descent is initiated after initial alert
Obstacle alerts
- OBSTACLE OBSTACLE, PULL UP
- CAUTION OBSTACLE
O - PULL UP on both attitude indicators, 20 - 30 sec from impact 🟥 on ND
C - 40 - 60 sec from project impact 🟧 on ND
Windshear alert
- detected by
- enabled when
- when does detection begin
- when does WX radar begins scanning:
D - GPWS
E - below 1500’ RA
W - windshear detection begins at rotation
When
- thrust levers set for takeoff, even if engine is off or IRS not aligned, or
- in flight below 2300’ RA (predictive wind shear alert issued below 1200’ RA)
Windshear
- WINDSHEAR AHEAD
- GO AROUND, WINDSHEAR AHEAD
- MONITOR RADAR DISPLAY
Predictive wind shear symbol on ND display shows its position on all 3 types.
- WINDSHEAR: 🟥 Symbol on both attitude indicators, 🟥 wind shear symbol + message on NAV display. wind shear close and ahead of airplane. Enabled during takeoff below 1200’ RA
- GO AROUND, WINDSHEAR: 🟥 Symbol on both attitude indicators, 🟥 wind shear symbol + message on NAV display. wind shear within 1.5 miles and directly ahead of airplane. Enabled during approach below 1200’ RA
- MONITOR RADAR DISPLAY: 🟥 Symbol on both attitude indicators, 🟥 wind shear symbol + message on NAV display. wind shear symbol on ND, 🟧 wind shear message on ND. wind shear within 3 miles and ahead of airplane, enable during takeoff and approach below 1200’
