Questions tagged [airbus-a320]

The Airbus A320 family is a series of twin-engine, single-aisle passenger jets produced from 1986-present. Different versions can typically carry from 107 to 220 passengers.

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1answer
105 views

Do the different spoilers on an A321 extend by different amounts? [duplicate]

I recently flew with an A321 and watched the left wing while the pilot tested the control surfaces before lift off. I noticed that one of the spoilers angled upwards much less than all others. In the ...
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How does CONFIG FULL provide better handling capabilities in turbulent conditions?

I wanted to get some clarity as to how does CONFIG FULL provide better handling capabilities in turbulent conditions? This line mentioned in the A320 FCTM under the the supplementary procedures ...
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2answers
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What is the absolute ceiling of the A319-100, B737-700 and A220?

What is the absolute ceiling of the A319-100, B737-700 and A220? I have found the service ceiling in Jane's and their type certificate data sheets, but nothing on the absolute ceiling.
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A320 Avionics Compartment Access Door (Seeking Photo References)

We're software developers currently working on a 3D A320 for training and we're getting quite stuck finding any suitable references of the Aviation Compartment Access Door - specifically both it's ...
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32 views

Wing and horizontal/vertical tailplane airfoil type and relative thickness?

I've been searching for data on the airfoil type (namely if they are supercritical, aft-loading etc.) and relative thickness (average or in different positions) of the empennage (both horizontal and ...
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2answers
138 views

Conflicting A320 Climb Profiles

In the Airbus brochure (more like a book) Getting to Grips with Aircraft Performance, the standard climb profile for the A320 family is mentioned as 250 kt / 300 kt / M0.78 With this accompanying ...
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1answer
4k views

What are those gray spots on the wing?

I recently flew on an Airbus A321 and noticed these gray spots on the wing, circled in red. What are those?
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Why does the A320 transponder's CLR button do two different things, depending on how many digits were entered?

I have to admit I've only flown in simulators but everyone of them implements the "CLR" button of the transponder in an A320 (maybe also others) the following way: It removes the fourth ...
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92 views

A320 Descent Managed Speed mode with Selected Speed

I would like to understand the behavior of Airbus 320 aircraft in managed descent mode, but with selected speed. Let us assume the descent is in DES mode with managed Econ speed on 270 kts/ Mach.75. ...
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Airbus 320 "Data Position Monitor Page" Bias? [duplicate]

What exactly do we mean by bias when it comes to calculating the FMGC position?
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1answer
89 views

Airbus 320 VS mode

I would like to understand how does the thrust control the Speed when we chose to fly in VS mode for climb or descent? I understand the priority is given to the rate of climb/descent when choosing to ...
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1answer
111 views

What is this scoop found on the core of a PW1127G engine near the CC/turbine section?

The view is back to front, the scoop is at 10 o'clock on engine 1. What would be it's function? I need supportive literature as well if possible.
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1answer
113 views

How can I know the manufacturer of the PFD (Primary Flight Display) of the current mainstream passenger aircraft?

I'm developing a computer vision software based on the photos of these PFD (Primary Flight Display). How can I know the manufacturer of these PFD of the current mainstream passenger aircraft: B737. ...
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1answer
124 views

Why do some Airbus jetliners at full thrust sound like turboprops? [duplicate]

When riding an A3xx I always noticed the unique "turboprop" like sound when close to full throttle. Why is that so?
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3answers
258 views

How much oxygen is put in say a 180-seater A319 or A320 aircraft?

I read the answer in How much oxygen do commercial airliners carry? but it doesn't go into any details about two things: How much oxygen is carried? I do imagine it would be quite a bit. How much ...
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Why does the flare mode of the A321neo engage 50 feet higher than the A321ceo?

When passing 100 ft RA, the THS is frozen and the normal flight mode changes to flare mode as the aircraft descends to land. The flare mode is essentially a direct stick-to-elevator law without auto ...
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1answer
368 views

Why do we have to perform a full ADIRS alignment between latitudes of 2 degrees North and South on the A320 family?

In the latest FCOM revision under the preliminary cockpit preperation normal procedures chapter ADIRS alignment has been added. However most of the conditions remain the same except for a new line ...
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1answer
2k views

How can the A320 receive 3 DME signals if it has only 2 DME receivers?

How can the A320 receive simultaneously 3 DME signals (VOR1 + VOR2 + ILS) if it has only 2 DME receivers (and antennas)? Does it multiplex them in some way? If yes, does it mean if one DME receiver ...
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3answers
225 views

How to determine the RPM of the rotating shaft of an A320 PTU?

The A320 PTU has an in-line variable displacement pump on one side and a bent-axis fixed displacement pump on the other connected directly by a shaft. what would be needed to know how fast the shaft ...
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1answer
327 views

What are the various thrust modes in the Airbus A320?

I was going through A320 AFM and came across Thrust modes. I was not able to understand why thrust is in thrust mode during climb and descent because we climb or descent with a constant speed. So ...
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568 views

What is the difference between LP fuel valve and LP fuel shut off valve?

In the Airbus A320 FCOM in some places "LP fuel valve" is mentioned (in Fire and Fuel System chapters) whereas in the engine chapter "LP fuel Shut off valve" is mentioned. Is there ...
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What is a bowed rotor? [duplicate]

I was going through A320 FCOM and came across this term. Is bowed rotor bending if the spool due to unequal thermal cooling
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1answer
183 views

If the APU is switched off but the APU bleed is on, will the engine bleed valve close automatically?

On he A320 family aircraft, if the APU is switched off but the APU bleed is on, will the engine bleed valve closed by the Bleed Monitoring Computer (BMC)? This what I understood after going through ...
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1answer
129 views

What is the relation between N1 and Wing anti-ice

When wing anti-ice is selected, the N1 or EPR limit is automatically reduced, and the idle N1 or EPR is automatically increased. What does this statement mean ???
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1answer
2k views

Which category is A321-271NX in?

So I was wondering what is the Aircraft categories all about because from my previous questions answer I got to know about something called Cat D type aircraft so it made me curious to know what are ...
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1answer
344 views

Why was NWS shifted from green hydraulic to yellow hydraulic system in the A320?

In older Airbus A320s, the NWS (nose wheel steering) was on the green hydraulic system and now it's on yellow. What's the reason for the change?
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Why is there no anti ice system on inboard slats of A320 [duplicate]

I was going through FCOM of A320 and it was mentioned that there is no anti ice system for inboard slats.
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Why does JetBlue have aircraft registered in Germany?

I recently saw a JetBlue A321 with a German flag on its tail and was wondering why it would be registered in Germany if it was a US-based carrier. I was thinking maybe it had something to do with ...
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2answers
442 views

Why is TOGA thrust 'never' 100% N1?

The title is voluntarily the opposite of this question: Why isn´t TOGA thrust always 100% N1 or N2?. I explain to you with an example: I'm looking to the FCOM of an A320 which states that the "...
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1answer
213 views

Why was blue hydraulic system chosen for RAT?

Q1. Why is blue hydraulic system chosen for RAT out of the three. Q2. If in case of hydraulic emmergency if I push RAT switch on Emer Elec pannel what will happen
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2k views

Why nitrogen generation system is only present in centre tank only?

I was going through FCOM of A320 and it mentioned that nitrogen generation system is only there for centre tank and not for wing tanks what is the reason for the same?
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1answer
239 views

Why the excessive wait after shutdown before using the manual starter valve on the PW1000G?

Why must there be a long period (measured in hours) between shutdown and startup, before using the manual engine start valve? Nine hours seems excessively long.
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210 views

What is the high pitched beep noise on A320s on startup?

Me and an engineer have been both breaking our heads over this, and no matter what we do we cannot figure this out. On certain A320 family aircraft, when the APU initializes/external power generator ...
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161 views

What is the difference between MMEL and MEL?

What was the need to introduced MEL if MMEL is there and is less restrictive than MEL ?
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1answer
221 views

Why is there a difference in the max spoilers extension between the A320 and A321 in a roll?

I was recently reading the Flight Controls chapter in the FCOM and I read that spoilers 2-5 extend a maximum of 35 degrees on the A320 however on the A321 spoilers 2,4 & 5 extend a max of 35 ...
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404 views

What is the difference between boomset and headset?

Both "boomset" and "headset" are terms used e.g. by Airbus: The audio management system includes: [...] sockets at each station headset jack and boomset connector (hand ...
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1answer
176 views

How often is the cabin air replaced in A320?

One of the A320 pilots told me that there is an icao rule that air should be replaced every 90 seconds? Is this true ? can someone give me a supporting article for the same
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1answer
318 views

Why is there an altitude limitation on operating the slats/flaps on the A320?

As per the FCOM limitations chapter there is an altitude limitation of 20000 feet for operating the flaps/slats on the A320? Why this specific altitude?
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1answer
98 views

What are the amber triangles on the ECAM bleed page on an A320?

In FCOM they say that triangle becomes amber when RAM AIR flap is not fully open, and both pack flow control valves are closed. Here the RAM air flap is emergency ram air or RAM Air flap for the Packs?...
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1answer
41 views

What does pneumatic operated and electrically controlled means? [duplicate]

I was going through A 320 FCOM and didn't understand this term
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3answers
1k views

Why doesn’t the A320 have any provision for manual aileron trim?

To eliminate the need for pilots (human or automatic) to maintain continuous force on their aircrafts’ yoke/joystick and rudder pedals while flying, aircraft generally have some sort of trim mechanism ...
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2answers
344 views

What exactly do "attempt" and "cycle" mean in these starter duty limitations?

Can someone please explain me this A320 Starter Duty Limitation in simple terms? E.g. for the CFM56 Starter: No running engagement when N2>20% 4 cycles of max 2 mins Pause between start attempts . ...
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How do the A320 flight controls reconfiguration laws work?

Can someone explain in simple terms the reconfiguration laws? I have hard time understanding ELAC, SEC, FAC Priorities in FCTL Architecture Diagram.
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606 views

What is the fuel consumption per mile for a full CEO A320?

I’m writing an essay as part of my GCSE HPQ and one of the statistics I need to base my research and answer on is the fuel consumption per mile or kilometre for a CEO A320. It doesn’t have to take ...
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2k views

Why is the battery turned off for checking the voltage on the A320?

Preliminary cockpit preparation section requires BAT check for 25.5V with BAT off (The beginning step). Since BAT indicator always show respective voltage, why they must be switched off?
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1answer
428 views

Why doesn’t the A320 family suffer from the same design constraints regarding engine placement/landing gear length as the Boeing 737 family?

This answer gives a pretty good description about the design issues which lead to the problems of the Boeing 737 Max (basically the same as in a video I watched a while ago): The landing gear of the ...
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2answers
1k views

Could you start both A320 engines with APU BLEED on?

I've seen some procedures where one engine is started with APU bleed, then APU Bleed is turned off to avoid ingestion of non-desired gases and then the second engine is started with ENG 1 Bleed on. ...
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1answer
2k views

What will happen on Airbus A320-200 series when during push back NW STRG DISC in not in the towing position?

During pushback what might happen if the NW STRG DISC is not indicated green on ECAM? Will I have an ECAM warning? What would be the worst case scenario that might happen?
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3k views

What is this turbine engine panel that opens on landing?

Tonight I flew from Munich to Dortmund on an A319 and I happened to sit just above the wings and turbine on the right side. Upon landing, the turbine opened a window or panel which exposed some grid ...
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1answer
121 views

What does the ACARS Weight and Balance Request page look like?

In the ATSU AOC Preflight menu of an Airbus (maybe Boeing too), there is an option for a weight and balance request. The selection name varies by airline but it may say "W/B Req" "Send ...

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