Context: In the aftermath of the deadly plane crash in Ahmedabad, Gujarat, officials have confirmed the recovery of the Cockpit Voice Recorder (CVR) and Flight Data Recorder (FDR) from the plane crash site.
Relevance of the Topic: Prelims: Key facts about Black Box.
What is Black Box?
- A black box is a flight recording device used in aircraft to record flight data and cockpit conversations.
- It consists of two main components:
- Cockpit Voice Recorder (CVR): record radio transmissions and other sounds in the cockpit such as the pilot conversations and engine noises.
- Flight Data Recorder (FDR): record crucial flight information like altitude, speed, heading, engine performance, and more.
- These devices help investigators reconstruct the sequence of events before a crash and determine its causes.
- Modern black boxes are actually orange in colour to make them easier to spot in wreckage. The term "black box" comes from early versions of data recorders that were kept in light proof boxes, making them appear "black" from the outside.
- The recording devices are stored inside a unit generally made out of strong substances such as steel or titanium and are also insulated from factors such as extreme heat, cold or wetness. They are placed at the back of the plane, where damage is usually less in a crash.
- For crashes over water bodies, Black Boxes are equipped with beacons that send out ultrasound signals for 30 days, although this does not guarantee their discovery.
History:
- Black boxes were the brainchild of Dr. David Warren, an Australian jet fuel expert.
- In 1963, Australia became the first country to make black boxes mandatory on all aircraft.