Gathering What The Contents Of The Plane's Black Box, The Most Wanted Goods At The Time Of The Accident

Illustration of aircraft cockpit (photo: Freepik/DCStudio)

YOGYAKARTA - The black box is one of the important tools on an airplane. When there is a disturbance to an airplane crash, usually this tool is used as a source of investigation. What exactly is in the plane's black box?

The plane's black box is a tool used to record data during the plane being flown. Although there is a term black, this tool is actually bright in color, namely orange. The color selection is intended so that the search team can easily find the tool.

The name black box itself began during World War II. In the past, this detection tool was painted black in color so as not to reflect light. The discovery of this tool has had a major impact on the world of aviation. It turns out that there are still many people who don't know what the black box contains.

The plane's black box consists of two recording devices, namely flight data recorder or FDR (flight data recorder) and cockpit voice recorder or CVR ( voice recorder in the cockpit).

FDR contains recordings of speed, vertical acceleration, fuel flow, and altitude. Meanwhile, the CVR contains talks or conversations that occur in the cockpit during flight.

In addition, the black box is also equipped with aUND underwater Locater (ULB) device. The device will be activated once the recorder comes into contact with the water. The device will send a signal from a depth of 14,000 feet.

The black box is the most searched component of the aircraft after the accident. If a black box is found, then investigators will take it to the laboratory to download the stored data in it. Furthermore, it will be reconstructed all events during the flight before the accident. However, this process takes quite a long time, it could take weeks to months.

The black box is a tube that generally has orange color. This recording device is no larger than a shoe box. This black box tube has strong materials and skeletons that can withstand very high impacts or slams. Even the black box is able to withstand the impact of a concrete wall at a speed of 750 kilometers per hour.

In addition, the black box also has a waterproof resistance of up to a depth of 6,000 meters (m) and is resistant to hot temperatures above 1,000 degrees Celsius for at least 30 minutes. While in the water, the black box is able to provide a location signal or location signal for 30 days.

The black box is usually placed on the fuselage on a safe or not easily damaged part. Generally, the tool is installed in the center or back near the wheel of the plane.

Black box is arguably a key tool to determine the cause of the crash. The black box serves to record flight crew conversations and monitor every sound that occurs in the cockpit.

The black box can record all events before the accident. In addition, this tool also has a number of other functions, namely:

The FDC technology in the black box will record air pressure when the aircraft is running. In addition, this technology also works to monitor information on acceleration, speed, altitude, cockpit control position, thermometer, machine measurements, fuel flow, autopilot status, cockpit control position, engine gauge, change position, and various other parameters.

The black box is also designed to have a Crash Survive Memory Unit (CSMU). This feature contains a memory board surrounded by thermal isolation of iron and steel. The technology is able to withstand the impact of the accident thousands of times the gravitational force and survive at sea at a depth of 14,000 - 12,000 times.

When submerged in the sea, the aircraft will emit ultrasonic recordings and signals that can reach the surface from a depth of 14,000. This method is done to prevent the search for the location of the plane crash.

That's a review of what the contents of the plane's black box and its function are. This tool has a very important function to record data during plane trips. That's why this tool is always needed the most important when an airplane crash occurs.

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