However, each ELT is specifically designed for each aircraft, so it cannot be tampered with. You also cannot turn off the black box, as it runs throughout the flight, recording every 30 to 60 seconds.
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It's also worth noting that if the transponder is switched off you generally only lose two pieces of information: the flight identification (mode A & mode S data) and altitude (mode C data). Primary radar will still paint a target (albeit unidentified) as long as the aircraft is within radar range.
The quick answer is NO, pilots cannot turn off the transponder while the aircraft is in flight. The transponder is a vital piece of equipment that is used to identify the aircraft to air traffic control. It also transmits important data about the aircraft, such as its altitude and speed.
“Black box” recording and storage equipment are compulsory on all commercial and corporate flights. The black box is actually two separate pieces of equipment - a cockpit voice recorder (CVR) and a flight data recorder (FDR). These record and store all audio, flight control info, and other data throughout the flight.
To record data in extreme situations, the black boxes resist extreme temperatures in case of fire and being submerged as deep as 6,000 metres into the water. > In case the plane crashes into the water, an underwater beacon will send out pulses which can be detected by an audio equipment.
There's no fixed number – each individual is unique, as is the ejection that they endure. After ejection, a pilot will be given a full medical evaluation and it is down to that medical professional to advise whether it is recommended that the pilot continues to fly or not.
Pan-Pan, short for “possible assistance needed,” is used to communicate an urgent, but not emergency, situation over VHF radio, in the case of aviation, to air traffic control. Examples could include a recreational pilot getting lost, or perhaps needing to climb to a higher altitude to sort a problem out.
A transponder is not required unless an aircraft is operating: In Class A, Class B, or Class C airspace. Above 10,000 feet Mean Sea Level (MSL), excluding airspace below 2,500 feet Above Ground Level (AGL).
“As long as there are pilots, they'll be able to switch off systems,” said Andrew Thomas, editor-in-chief of the Journal of Transportation Security. Airplanes have two transponders. There are two knobs in the cockpit — one on the right, the other on the left — that control one or the other.
An aircraft actually has two black boxes. One is a flight data recorder, which stores information on specific parameters such as flight control and engine performance. The second is a cockpit voice recorder, which records background sound and conversations between crew members and air traffic control.
Designed to surviveThe critical part of the black box is the crash-survivable memory and data storage. Earlier recorders used analog tape, but digital solid-state memory is used today. This is contained in a cylindrical housing engineered to survive extreme impact, heat, and pressure and protect the memory inside.
The “black box” is actually a pair: a cockpit voice recorder, or CVR, which uses microphones in the pilots' headsets and the center of the cockpit to record sounds from the last two hours of each flight (after which it's taped over by the next flight's recording, unless it's needed for an investigation) and the flight ...