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AIRBUS A319/320/321
2009 – 2010
Updated : 04/18/09
Send corrections/comments to:
Bob Sanford, E-mail: busdriver@hky.com
Part 1 (Prior to Class)
Pneumatics/Air Conditioning/ Pressurization
1. When would the LO selection on the PACK FLOW selector be used?
PACK FLOW Selector (A319/320)
 LO: if number of pax is less than 90 or for long haul flights.
 HI: for abnormally hot and humid conditions.
 NORM: for all other operating cases.
ECON FLOW Selector (A321)
 ON: ECON FLOW if number of pax is less than 140.
 OFF: for normal flow
2. If bleed air is being supplied by the APU or if one pack fails, what will the pack flow rate be?
During single pack operation or if the APU is supplying bleed air for air conditioning, pack controllers select high
flow (A319/320) or normal flow (A321) automatically, regardless of selector position.
3. With the LDG ELEV selector in AUTO, what altitude is used for landing field pressurization reference?
FMGS data is used.
4. When is the RAM AIR pushbutton used?
During flight, if both packs fail, or in case of smoke in the cabin, a ram air inlet may be opened allowing ambient
air to enter the mixing unit.
5. Can external air be used to supplement low APU bleed pressure?
No
6. When operating pressurization in AUTO, if the pilot suspects the selected controller is malfunctioning,
how can he swap controllers?
Select the other system by switching the MODE SEL pb to MAN for at least 10 seconds, then return it to AUTO.
7. Is cargo heat provided to the forward cargo compartment?
No, although a portion of the avionics cooling air is exhausted through the cargo underfloor.
2009 – 2010 TGS Study Guide
___________________________________________________________________________________________
____________________________________________________________________________________________
Unofficial Airbus Study Site www.airbusdriver.net
Ice and Rain Protection
1. On approach, when should WING anti-ice be selected OFF?
Wing anti-ice operation:
 Select WING ANTI-ICE ON after thrust reduction altitude
 Normally, WING ANTI ICE should be selected OFF at the FAF
 If in severe icing conditions, WING ANTI-ICE may be left ON for landing
2. When will probe heat automatically come on?
 On the ground, low power is applied to the heaters when at least one engine is operating.
 In flight, the heating system automatically changes to high.
 The probe heaters can be activated manually prior to engine start by placing the PROBE/WINDOW HEAT
pb ON.
Note: The TAT probes are not heated on the ground.
3. What part of each wing is anti-iced with pneumatic bleed air?
The three outboard slats on each wing.
4. What happens to the heat at the drain masts when the aircraft is on the ground?
On the ground, the heat is reduced to prevent injury to ground personnel.
5. What happens when Wing Anti-Ice is on and a bleed leak is detected?
They close automatically:
 Upon touchdown,
 If a leak is detected, or
 If electrical power is lost.
6. What affect does Engine Anti-Ice have on engine performance?
The N1 limit for that engine is automatically reduced, and if necessary, the idle N1 is automatically increased for
both engines in order to provide the required pressure. Additionally, continuous ignition is activated for that engine.
2009 – 2010 TGS Study Guide
___________________________________________________________________________________________
____________________________________________________________________________________________
Unofficial Airbus Study Site www.airbusdriver.net
Autoflight
1. What would cause a red AUTOLAND light to illuminate below 200'?
The following situations, when occurring below 200’ RA with the aircraft in LAND mode, trigger the flashing
AUTOLAND red warning, and a triple-click warning:
 Both APs OFF below 200’ RA
 Excessive deviation in LOC (1/4 dot above 15’ RA) or GLIDE (1 dot above 100’ RA). In addition, LOC and
GLIDE scales flash on the PFD.
 Loss of LOC signal (above 15’ RA) or loss of GLIDE signal (above 100’). In addition, FD bars flash on the
PFD. The LAND mode remains engaged.
 The difference between both radio altimeter indications is greater than 15’.
Go-Around is mandatory during a CAT II/III approach if AUTO LAND caution light illuminates during the approach.
2. What is Thrust Lock?
The thrust lock function prevents thrust variations when the autothrust system fails and disengages.
The thrust lock function is activated when the thrust levers are in the CL detent (MCT with one engine out) and:
　
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