What is the tech log on an airbus and what does the squak code and transponder do?

Question

pilots say they need to wait for the tech log and they'll be away,

so what is the tech log.

the aircraft is given a squak code what does this do?

and what is the transponder.

many thanks

Answer 1

don't know about the tech log, if u mean black box, it will record everything that the plane does.

Transponder lets ATC (air traffic control) see your heading, speed and altitude

Squawk code is a code that you transmit and it is mainly for identification bu some codes like 7500, 7600 and 7700 can mean emergencies such as 7500 - hijack or unlawful posession

best?

Answer 2

the tech log is the book that records the hours the aircraft has flown, defects which have been raised from the previous flight, sign offs from the previous flight by the capt and engineer etc. it basically lets the crew know the status of the aircraft and where it has been etc. it's a legal requirement to check it before going on a flight. every plane has one from your lighties up to the big jets.

Answer 3

the third guy tells it right every aircraft has an assigned squawk code if you go in the cockpit they have a decal there with the aircraft registration and the aircraft assigned squawk identification code.

As per the tech log some calls it aircraft maintenance log (book) it is where the pilots keep record of the flight and the events that happened he write it in the flight remarks and mechanics would fix it if they can as soon as they land. Some items are called "go" and "no go", go means they can defer fixing the problem and "no go" means the aircraft cannot take-off without fixing first what the pilot remarked.

Answer 4

I have no idea about the tech log.

Re:  the trasnponder.  The ground radar that keeps track of where aircraft are has two problems:  all airplanes look the same, that is they produce a "blip" on the screen that looks like all the others, and not very strong at that, because the radar is only seeing the energy that bounces off the plane and returns to its antenna.  Second, a ground radar cannot determine the plane's altitude, just its two-dimensional location.  

The transponder overcomes both these problems.  It is really a little radar receiver and transmitter.  When it receives a pulse from the ground radar, it sends a pulse back.  Because it is actuallly transmitted from the plane and not just reflected off it, it is much stronger.  The air traffic control people assign a unique code to each flight, which is a four-digit number entered into the transponder.  When it re-transmits each radar pulse, it also sends the code, so the air traffic control people can tell specifically what plane is represented by each blip on their screen.  That code is known as the "squak code".  

The transponder is also connected to the plane's altimeter so that the transponder transmits the plane's altitude, so that the ground radar screen can display that information as well.

A sort of secondary use for the transponder is to convey emergeny infomation.  Certain codes are reserved for aircraft that have lost radio communication, been hijacked, or suffered some other emergency.

Answer 5

Squawk code and transponder allow ATC to see your heading,speed altitude etc.

Tech log....go here http://www.tech-log.com/

Answer 6

I think the "tech log" that your referring to is the Maintenance Log.  There is a book on all airline aircraft where you write up problems with the aircraft.  After an item is fixed by maintenance, the Maintenance Log must be signed off by a qualified mechanic.  Typically when the log is signed, the mechanic talks with "Maintenance Control" or a maintenance dispatcher to tell them exactly what was done so it's entered into a database.  The maintenance log is required to stay with all aircraft.

The sqwak code is entered into the transponder.  This code is given by Air Traffic Control and is a unique 4 digit code that identifies that particular flight.  When the radar beam swipes the aircraft and bounces off the plane, the transponder sends a signal with the radar beam to the radar station.  The transponder encodes your altitude and 4 digit sqwak code.  The code is then decoded by the ATC computer system which in turn displays your flight number on the air traffic controllers radar display.

Answer 7

ATC assigns you a squak code and you put that code in your transponder.. Its just a 4 digit number that your transponder will transmit to ATC telling them your position, altitude, heading, and speed..

the tech log, is like the aircraft log.. in it you'll find things like how much time is left before the aircraft needs an inspection, when the VOR check needs to be completed, maintenance stuff and you'll have a place to record leg information and engine trends..

Answer 8

THE TECH LOG IS BASICALLY THE ENGINEERS SIGNATURE FOR RELEASE OF THE AIRCRAFT CONTAINING INSIDE IT ANY RECENT MAINTENANCE & MINOR DEFFICIENCIES THAT THE PILOT & CREW NEED TO KNOW ABOUT ! BASSICALLY THINK OF IT AS ITS M.O.T.  & VERIFACATION THAT THE AIRCRAFT IS FIT FOR FLIGHT !

Answer 9

leaving the tech log aside everyone is very close to what the squawk codes in fact do.

OK here is radar 101 there are two types of radar in use Primary and Secondary search radars.  The primary type is the one that we all think about when we use the term radar.   This type has been around since WW II the transmitter sends out a pulse and it bounces back and is received by the radar site.  Just to muddy the waters a little this type of radar is used by the military for height finding but the antenna nods up and down rather than rotates.

Secondary Search on the other hand sends out a series of coded pulses that are used to interrogate the aircraft's transponder.  The code is 3A/C requesting the aircraft ID and altitude (3 is a military code).  A transponder is just a receiver and transmitter in a box just like a transceiver BUT it will only transmit the code that is dialed in on its control unit.  If an aircraft doesn't have a transponder and is out of range of the primary radar then ATC can't see it.  All aircraft operating within a control area are required to have a transponder BUT they don't have to be altitude encoding, general aviation uses 1200 & 1800 for codes depending on the altitude of the aircraft.

Lastly squawk just means that is the code to be dialed in and when they say squawk ident there is a button that when pressed has the transponder send the code lots of times and the radar display computers are supposed to pick this up and highlight that aircraft.

Wikipedia Secondary Search Radar for more info.