A300 Classic SKV Air Conditioning and Pressurization Flashcards
If one auto pressurization controller is deferred and the remaining one fails, how would the crew control aircraft pressurization?
Selecting the faulted controller OFF will force the pressurization system into manual control
In the Air Conditioning System, what is the function of the Pack Temp MAN CTL selector?
Manual control of the Pack discharge temperature when MAN is illuminated white in the Pack MODE SEL pushbutton
Where is the cold air from the air conditioning packs sent?
Cold Air Manifold
In the Air Conditioning System, what supplies the air for the Hot Air Manifold?
Hot compressed bleed air tapped off prior to the packs
In the Air Conditioning System, what component mixes the air from the Hot and Cold Air manifolds?
Trim air valves
What would cause the blue RATE light on the overhead pressurization panel to illuminate?
The cabin pressure rate knob is out of the NORM position
What air conditioning malfunction could cause an amber pack FAULT light?
A pack overheat or valve position disagreement with selected switch position
What are the different levels of air conditioning pack flow?
Normal or ECON
In the Air Conditioning System, what is the purpose of the ECON pushbutton switch?
Reduces airflow inflight to 68% normal flow (both engines operating) to increase fuel efficiency
In the Air Conditioning System, what is the purpose of the MAX COOL pushbutton switch?
Lowers the lower limit of the pack discharge temp
On the overhead air conditioning panel, if the compartment temp function is selected to CRT, what happens?
All compartment temperatures can be read on ECAM
How many automatic cabin pressurization systems are installed?
2 systems, one active and one in standby
During normal operation, what does the active pressurization system control to maintain cabin pressurization?
Outflow valves
In the Pressurization System, how many motors are installed on each outflow valve?
Three, (Reg 1, Reg 2, manual)
When would the Vent Overboard Valve normally be fully open?
On the ground, no engines running
When you select the MAN PRESS switch, how does it affect the Aircraft Pressurization System?
The system is selected to manual, the V/S Switch becomes active and the ECAM pressurization display and the Cabin High Altitude warning are both lost
In the Aircraft Pressurization System, what is the purpose of the Safety valves?
Protect against over or under pressurization of the aircraft
In the Aircraft Pressurization System, what does the Amber LO delta P light indicate?
The pressurization system cannot keep up with descent rate of aircraft
How many temperature zones are there in the Air Conditioning System?
Four - Cockpit, FWD cabin, MID cabin and aft cabin
With both air conditioning packs operating, what is the pack outlet temperature control priority?
If the Flt Deck demands coldest temp, it controls pack 1
With only one air conditioning pack operating, what controls the packs’s outlet temperature?
The operating pack outlet temp is controlled by whichever zone (cockpit or main deck) that requires the coolest air
In the Aircraft Pressurization System, what automatically occurs when both outflow valves are selected OFF?
Ditching mode is activated
In the Air Conditioning System, how are the lower FWD and AFT cargo compartments heated?
Indirectly heated by upper deck air, BULK cargo compartment is directly heated
What occurs if the EXTRACT pushbutton on the VENT overhead panel is pressed in-flight?
OVBD light illuminates white and Overboard Valve partially opens, increasing the rate of ventilation
In the Air Conditioning System, what is the purpose of the RAM air?
Used to ventilate cockpit and cabin in case of dual pack failure
What three conditions will cause the residual pressure red warning light to flash?
Cabin pressure is present, at least one engine is shut down and the emergency evacuation slide is disarmed
What is the primary purpose of the Pack Valves in the Air Conditioning System?
They function as both a shutoff valve and flow control valve
When does the Pressurization System automatically switch controllers?
At 2nd engine start or when active system fails
What does the Air Conditioning System supply to the Bulk Cargo Compartment?
Trim air plus air extracted from the main deck
In the Pressurization System, what occurs when the second engine is started?
The active pressure control system automatically switches
Where can hot air fro the Air conditioning System be supplied from?
The engine(s), APU, or a ground air cart
What is the primary function of the Precooler?
Controls temperature of the engine bleed air entering the bleed air manifold
