SERV SYSTEMS EXAM REVISION Flashcards
What different modes can you get TCAS in?
- Above: 12,700ft above & 2,700ft below
- Below: 12,700ft below & 2,700ft above
- Normal: 2,700ft above and below
What occurs when the TFC button on the DCP is selected?
- Places TCAS display on SFD & displays MAP/Arc mode (regardless of source selection)
- 2nm range ring appears around A/C when range scale is <20nm
Crew response to an TCAS RA event (4)
- Disengage AP
- Positive action by crew into a green “fly to” zone on PFD
- 5 second response time
- 0.25 G manouevre
What does TCAS provide?
What is the Aural alert given over?
- Intended as a back-up to visual collision avoidance, right of way” rules and ATC sep services
- ICS & Loudspeaker
What is the expected response for an RA reversal
- 2.5 secs response
- Up to 0.35 G maneuver
What are the 3 reasons for a Mode 4 CAWS annunciation?
What two ways can you get rid of it?
- Mode 4 code storage problems
- KIT-1C failure
- Improper Mode 4 response
- Select IFF2
- Load crypto
Why would you select only TA (not TA/RA)
To prevent nuisance calls in busy, controlled TFC environments (e.g. a/c in circuits)
What automatically occurs through what altitudes for TCAS on CLB out from an aerodrome?
- TA only on climb until through 1100ft (NO voice callouts until through 600ft)
- TA/RA once through 1100ft
What automatically occurs through what altitudes for TCAS on DESCENT into an aerodrome?
- Through 900ft, TA only
- Inhibits voice callouts below 400ft AGL
What systems does TCAS require to be powered and functioning normally to operate?
- RADALT
- EGI1 or EGI2
- Master SP
- Either IFF
EGPWS sensors/system inputs (7)
- Airspeed
- RADALT
- Baro
- Position (GPS)
- Attitude
- Glideslope deviation
- Gear & flap position
What are the 3 Enhanced functions of the EGPWS?
- Terrain awareness & display (terrain look ahead function & RGB display)
- Terrain clearance floor
- Peaks mode
EGPWS Mode One
- Name
- Caution/Warning (aural & visual)
- Excessive descent rate
- CAUTION audio: “SINKRATE”
- WARNING audio: “PULL-UP)
- WARNING visual: Red box lower LHS ADI “PULL UP”
EGPWS Mode Two
- The types
Excessive terrain closure rate
- Mode 2A:
Active during CLB/Cruise/Initial Appch
Flaps NOT is land config & NOT on an ILS
- Mode 2B: desensitised envelope during normal appch & LDG
EGPWS Mode Two
- Caution/Warning (aural & visual)
- CAUTION audio: “TERRAIN TERRAIN”
- CAUTION visual: Yellow box lower LHS ADI “GND PROX”
- WARNING audio: “PULL-UP”
- WARNING visual: Red box lower LHS ADI “PULL UP”
EGPWS Mode Three
- Name
- Caution/Warning (aural & visual)
Altitude loss after Takeoff
Aural only; “DON’T SINK, DON’T SINK”
EGPWS Mode Four
- The 3 types
Unsafe Terrain clearance
- 4A: cruise & appch, gear or flaps UP
- 4B: cruise & appch, gear or flaps DOWN
- 4C: Takeoff gear or flaps UP
EGPWS Mode Four Alpha
- Caution (aural & visual)
Aural message:
- “TOO LOW TERRAIN”
- “TOO LOW GEAR”
CAUTION visual:
“GND PROX”
EGPWS Mode Four Bravo
- Caution/Warning (aural & visual)
Aural message:
- “TOO LOW TERRAIN”
- “TOO LOW GEAR”
- “TOO LOW FLAPS”
CAUTION visual:
“GND PROX”
EGPWS Mode Four Charlie
- Caution/Warning (aural & visual)
Aural message:
- “TOO LOW TERRAIN”
CAUTION visual:
“GND PROX”
EGPWS Mode Five
- Name
- What are the two warnings & the parameters around them
Excessive Glideslope deviation
- Soft voice “GLIDESLOPE” (1/2 volume): <1000ft AGL, descent exceeds 1.3 dots below
- Hard voice “GLIDESLOPE” (Full volume): <300ft AGL and exceed 2 dots
EGPWS Mode Six
- Name
- 3
Advisory alerts:
- Altitude callouts; smart 500, 100, 50, 30, 10
- Bank angle; When AoB exceeds 58.8deg
("BANK ANGLE, BANK ANGLE")
- Takeoff flaps;
("FLAPS, FLAPS")Enhanced functions; Terrain Alerting & display
- Caution/Warning (aural & visual)
- When impact possible within the next minute; “CAUTION TERRAIN” Aural & yellow visual “GRD PROX”
- When impact is possible in the next` 30 seconds; “TERRAIN PULL UP” Aural & red visual “PULL UP”
Terrain Clearance floor
- what is its function
- When is it active
- Caution/Warning (aural & visual)
- Creates an increasing terrain clearance envelope around the airport runway to provide CFIT protection
- Active during T/O, cruise & Final appch
- “TOO LOW TERRAIN” Aural & Yellow “GND PROX” visual
