Cockpit Voice Recorder (CVR) and Flight Data Recorder (FDR):
Cockpit Voice Recorder (CVR):
Cockpit Voice Recorders, often known as CVRs, are required equipment in all
commercial aircraft operating throughout the world. These devices record conversations
throughout an aircraft's cockpit on (in older models) digital tape and (in newer models) on a digital microchip. Sounds are picked up via a system of cockpit microphones, known as Cockpit Area Microphones (CAM), Public Address Microphones (PA), and radio microphones (RDO). In the event of an accident, this information may be used by investigators to determine what was occurring in the cockpit throughout the incident. A CVR is carefully engineered to withstand the force of a high speed impact and the heat of an intense fire. CVR is painted with high resistant orange paint for high visibility in the wreckage. CVR is also equipped with Underwater Locator Beacon (ULB) to assist in the event of an overwater accident. The device is called PINGER, is activated when the recorder is immersed in water. It transmits an emergency signal which then picked up by special receivers.
Flight Data Recorder (FDR):
Flight data recorder records the parameters of the aircraft during flight. By the rules
of ICAO an aircraft must record eighty eight (88) parameters. These parameters involves
altitude, air speed, heading and aircraft attitude. FDR can aid the air crash investigators in
many great ways. The data recovered from the FDR can be used to generate a computer
animated video reconstruction of the flight. FDR is also equipped with the same safety
components which are used in CVR.
Cockpit Voice Recorder (CVR):
Cockpit Voice Recorders, often known as CVRs, are required equipment in all
commercial aircraft operating throughout the world. These devices record conversations
throughout an aircraft's cockpit on (in older models) digital tape and (in newer models) on a digital microchip. Sounds are picked up via a system of cockpit microphones, known as Cockpit Area Microphones (CAM), Public Address Microphones (PA), and radio microphones (RDO). In the event of an accident, this information may be used by investigators to determine what was occurring in the cockpit throughout the incident. A CVR is carefully engineered to withstand the force of a high speed impact and the heat of an intense fire. CVR is painted with high resistant orange paint for high visibility in the wreckage. CVR is also equipped with Underwater Locator Beacon (ULB) to assist in the event of an overwater accident. The device is called PINGER, is activated when the recorder is immersed in water. It transmits an emergency signal which then picked up by special receivers.
Flight Data Recorder (FDR):
Flight data recorder records the parameters of the aircraft during flight. By the rules
of ICAO an aircraft must record eighty eight (88) parameters. These parameters involves
altitude, air speed, heading and aircraft attitude. FDR can aid the air crash investigators in
many great ways. The data recovered from the FDR can be used to generate a computer
animated video reconstruction of the flight. FDR is also equipped with the same safety
components which are used in CVR.
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