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A320 Command Prep > SYSTEMS > Flashcards

SYSTEMS Flashcards

1
Q

AT WHAT STAGE IN FLIGHT WILL A REACTIVE WINDSHEAR OPERATE?

A

Provided by the FAC in T/O & APP phase:

At T/O, 3s after lift off - 1300ft RA

At landing, 1300ft - 50ft

At least CONFIG 1

Visual “WINDSHEAR” red msg onPFD’s 15s & aural warning X3

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2
Q

WHAT ARE THE UNPRESSURISED AREAS?

A
  • Radar Cone
  • Nose Gear Bay
  • AIR COND compartment
  • Main GEAR bay
  • Tail cone

FCOM-A/C GEN-20-20

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3
Q

HOW IS THE CABIN/COCKPIT TEMP CONTROLLED?

A

Via the AIR COND panel. Temp regulation is ensured by 2 Air Conditioning System Controllers (ACSC) which both have 2 lanes.
Regulated via the HOT AIR pressure regulating valve, TRIM AIR VALVES (add HOT air), tapped upstream of the packs, to the air from the mixing unit.

FCOM-A/C SYSTEMS-21-10-AIR CON

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4
Q

HOW DOES THE PACK FLOW CONTROL VALVE OPERATE?

A

The valve is PNEUMATICALLY operated and ELECTRICALLY controlled. It gets its signals from ACSC.
If NO air pressure then a spring keeps it closed.
Valve automatically closes in the event of OVERHEAT, ENG START, operation of fire PB’s or ditching PB.

FCOM-A/C SYSTEMS-21-10-20

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5
Q

WHAT IS THE EMERGENCY RAM AIR USED FOR?

A

To ventilate the cockpit/cabin to remove smoke or if both packs fail. Operated via RAM AIR PB, outflow valve moves to 50% position.

FCOM-A/C SYSTEMS-21-10-20

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6
Q

WHERE IS THE AIR SUPPLIED VIA?

A 
It is fully automatic.
Supplied via:
-2 PACK flow control valves
-2 PACKS
- the mixing unit, from the cabin and packs

FCOM-A/C SYSTEMS-21

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7
Q

WHAT ARE THE PACK FLOW %’S WHEN SELECTED IN LO/NORM/HI?

A

LO - 80%

NORM - 100%

HI - 120%

FCOM-A/C SYSTEMS-21-10-50

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8
Q

WHAT ARE THE FOUR FUNCTIONS OF CABIN PRESSURISATION?

A
  • GND- Fully opens outflow valve on the GND.
  • Prepressurisation -During T/O, increases cabin pressure to avoid a surge in pressure during rotation.
  • IN FLIGHT-Adjusts cabin altitude for PAX comfort.
  • Depressurisation-After touchdown, gradually releases residual cabin pressure before GND function.

FCOM-A/C SYSTEMS-21-20-10

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9
Q

WHAT DOES THE CABIN PRESSURISATION SYSTEM COMPRISE OF?

A
  • 2 Cabin Pressure Controllers CPC
  • 1 Residual Pressure Control Unit RPCU
  • 1 Outflow valve (1 actuator that has 3 motors, 2 auto & 1 manual)
  • 1 control panel
  • 2 Safety Valves

FCOM-A/C SYSTEMS-21-20-10

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10
Q

WHERE DO THE CPC’s RECEIVE SIGNALS FROM?

A
  • ADIRS
  • FMGC
  • EIU
  • LGCIU
  • EMER RAM AIR

FCOM-A/C SYSTEMS-21-20-20

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11
Q

WHAT DOES ‘OPT ALT’ MEAN ON THE CRUISE PAGE?

A

Optimum Flight Level. lowest cost for a given flight plan, cost index & gross weight. The FM updates this figure during the flight.

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12
Q

WHEN DOES THE ‘RAT’ AUTOMATICALLY DEPLOY?

A

When AC BUS 1 & 2 are lost.

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13
Q

WHAT IS THE MAXIMUM ALTITUDE FOR THE GEAR BEING EXTENDED?

A

25,000FT

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14
Q

WHEN IS THE PTU INHIBITED?

A
  • During 1st ENG start and self tests during 2nd ENG start.

- also inhibited during & 40s after automatic operation (opening or closing cargo doors) of the yellow electric pump

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15
Q

ABOVE WHAT SPEED WILL AUTOBRAKE MAX OPERATE IN A REJECTED T/O?

A

72kt

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16
Q

AT WHAT SPEED DOES THE NWS STOP?

A

130kt

17
Q

AT WHAT HEIGHT CAN THE AUTOPILOT BE USED ON T/O?

A

100ft

5s after lift off

18
Q

WHAT IS ‘SAT’ & ‘TAT’?

A
  • SAT = Static Air Temp, outside air temp

- TAT = True Air Temp, surface of the skin temp. usually warmer due to air compression.

19
Q

WHICH HYDRAULIC SYSTEM RUNS THE NORMAL BRAKES?

A

GREEN

20
Q

NAME THE 4 DIFFERENT TYPES OF BRAKING

A

NORMAL
ALTERNATE WITH ANTI-SKID
ALTERNATE WITHOUT ANTI-SKID
PARKING BRAKE

21
Q

TALK ABOUT THE BANK PROTECTIONS

A
  • If >33’ and sidestick released the A/C will return to 33’
  • Limit is 67’
  • if AOA or Highspeed protections activated then limited to 45’
  • AUTOTRIM inhibited above 33’
22
Q

WHAT ARE THE PITCH LIMITS

A
  • +30’ Nose up in CONF 0-3
  • +25’ Nose up in CONF FULL
  • -15’ Nose down
23
Q

TALK ABOUT ‘ALPHA FLOOR’

A
  • Automatically sets TOGA when A/C reaches high AOA
  • FAC generates signal
  • Available from lift off to 100ft
  • ALPHA FLOOR - TOGA LK, disconnect autothrust to regain control of thrust.
24
Q

HIGH SPEED PROTECTION WHAT DOES IT DO?

A
  • Automatically recovers from high speed upset.
  • ALARM Activates at VMO +6kt/MMO +M0.01
  • Pitch trim is frozen, A/C roll to 0’. Bank angle is limited to 45’
  • Nose up order applied at VMO+16kt

FCOM DSC-27-20-10-20

25
Q

WHEN DOES THE PTU OPERATE?

A

500psi difference

26
Q

WHAT IS THE PROCEDURE FOR “IF WET:RWY TOO SHORT”?

A

ROW alert

If RWY wet or contaminated then GO AROUND.
Arms at 400ft agl to start of braking

FCTM AS-ROW/ROP

27
Q

WHEN IS THE “ROP” FUNCTIONING?

A

From start of braking until the A/C stops.

“BRAKE, MAX BRAKING, MAX BRAKING” aural alert.

FCTM AS-ROW/ROP

28
Q

WHAT DOES THE FMGS CONSIST OF?

A
  • 2 FMGC’S
  • 2 MCDU’S
  • 1 FCU
  • 2 FAC’S

FCOM DSC-22_10-10

29
Q

WHEN DO THE FD BARS AUTOMATICALLY DISAPPEAR?

A

25* NOSE UP
13* NOSE DOWN
45*+ BANK ANGLE

FCOM DSC-22_30-20

30
Q

AT WHAT HEIGHT CAN THE AP NOT BE ENGAGED?

A

BELOW 100ft RA

FCOM DSC-22_30-30

31
Q

WHAT IS THE TCAP SYSTEM?

A

TCAP - TCAS Alert Prevention

When a TA is triggered ALT* will engage and reduce V/S to around 1500 fpm.

32
Q

WHAT IS TOS 2?

A

Takeoff Surveillance 2

Calculates the distance between the position at which brakes are released to the point the a/c will leave the ground.
An ECAM caution or WARNING will sound if it determines the distance inadequate when T/OFF power is set.

33
Q

WHEN DOES ROW/ROPS ARM AND DISARM?

A

ROW ARMED at 400 ft until start of braking
ROPS starts at braking and DISARMS at A/C STOP.
ROPS is inhibited at 30 kt or less GND SPD

FCOM DSC-34-SURV-50-20

34
Q

HOW LONG DOES THE “WINDSHEAR” WARNING LAST FOR IF IN THOSE CONDITIONS?

A

The system latches for 15 secs and will show on the PFD for that time. If at the end of the 15 secs, the audio warning will repeat (WINDSHEAR X 3) IF it still detects windshear.

35
Q

WHAT IS THE “BACF” AND WHAT DOES IT DO?

A

BRAKING ACTION COMPUTATION FUNCTION

Only reports computed braking action when friction limits encountered (anti-skid activates), more so in LOW.

36
Q

WHAT DOES IT MEAN WHEN YOU HEAR THE “CAVALRY CHARGE”?

A

AP has disengaged

FCOM DSC-22_30-30

A320 Command Prep (23 decks)

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