If a black box cannot be turned off why can the TCAS or transponder be turned off or put on standby. Why isnt it always on.
2006-10-10 09:30:10 · 7 answers · asked by Ask Me 2 in Cars & Transportation ➔ Aircraft
Hi Ask Me -
There are times when a transponder suffers a failure that causes it to report erroneous altitudes or "squawk" an incorrect identity code.
On such occasions, ATC (Air Traffic Control) will ask the pilot to turn the transponder off to reduce confusion.
There are other times, when the aircraft is not flying in controlled airspace, that it's not required to have the transponder on.
And if an aircraft suffers an alternator failure, the pilot may turn off all non-essential electronics to extend the a/c battery life. In those cases, the transponder would be turned off.
Remember - the airplane won't fall out of the sky if the transponder isn't on! It's just another aid for ATC, and sometimes isn't needed.
Good question -obviously you do a lot of thinking about operating aircraft safely!
CQ
2006-10-10 11:33:38 · answer #1 · answered by CharlieQ 4 · 2⤊ 1⤋
Actually the "blackbox" called the FDR or DFDR (Digital flight data recorder" (which is actuallty orange) can be turned off... it has a circuit breaker that can be pulled by the pilot's. The TCAS and Xpdr can be turned off based on the installation... during ground run up.. there really is no need to have TCAS or Xpdr running... Most pilots keep the TCAS turned on at all times, as it is usually turned off while the WOW (weight on wheels) switch is made (or on the ground). The Xpdr can cause clutter on the ATC screen if in RA/TA... but most the time it really is not a problem keeping them in the on position.
2006-10-10 13:20:59 · answer #2 · answered by Dport 3 · 1⤊ 1⤋
To add to what CQ said, what if the transponder were malfunctioning and sending the incorrect information? That is another reason to be able to turn it off. On the ground, you might want it off so that it doesn't interfere with the TCAS of aircraft on approach to land, making it look like there was traffic and collision was imminent.
2006-10-10 13:16:32 · answer #3 · answered by Jerry L 6 · 1⤊ 0⤋
A "black box" CVR/FDR can be turned off using a circuit breaker but i suspect that is illeagal. a transponder is just like another radio on the aircraft an can be turned off easily, but why someone would want to turn it off is another question. Typically they default to on when power is put on the aircraft, and transmit a 1200 code that is a VFR code. they transmit altitude information primarily but the more modern types transmit a lot more information.
2006-10-10 11:05:09 · answer #4 · answered by PolarCeltic 4 · 0⤊ 3⤋
you have the desirable to not be tracked without due technique. you do not in spite of if have the computerized genuine to a cellular telephone. So even interior the paranoid fantasy international the place they are monitoring you by using your cellular telephone your rights are not an argument, you are able to go with to hold a cellular telephone or not. in case you carry one you purely ought to settle for in spite of comes with that. and that they are able to song telephones completely properly without GPS, the accuracy isn't exceptionally much as good in spite of if it is not too undesirable.
2016-11-27 19:46:17 · answer #5 · answered by ? 4 · 0⤊ 0⤋
It is a little complicated. If you forced it to always be ON what frequency would you set it to, etc.? There has to be a hand-shake with ATC to know who you are on the frequency, etc. But also remember it is a high-powered radio and you should turn it off when not in use for safety/health/power/etc.
If this is a question about 9/11 you have to remember the research they did. If you force them "on" they would have memorized which circuit breaker it is on and would have pulled it, etc.
2006-10-10 09:42:27 · answer #6 · answered by Drewpie 5 · 0⤊ 3⤋
it has an off/on switch on it.
2006-10-10 09:37:33 · answer #7 · answered by arkie 4 · 0⤊ 2⤋