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Encyclopedia > Flight recorder

Both side views of a cockpit voice recorder, one type of flight recorder
Both side views of a cockpit voice recorder, one type of flight recorder

A flight recorder is a recorder placed in an aircraft for the purpose of facilitating the investigation of an aircraft accident or incident. For this reason, they are required to be capable of surviving the conditions likely to be encountered in a severe aircraft accident. They are typically specified to withstand an impact of 3600 g and temperatures of over 1,000 °C (as required by EUROCAE ED-112). There are two types of protected Flight Recorder, Flight data recorder (FDR) and Cockpit voice recorder (CVR). In some cases, the two recorders may be combined in a single FDR/CVR unit. Image File history File links Size of this preview: 800 × 281 pixelsFull resolution (1502 × 528 pixel, file size: 153 KB, MIME type: image/jpeg) Other versions Originally from en. ... Image File history File links Size of this preview: 800 × 281 pixelsFull resolution (1502 × 528 pixel, file size: 153 KB, MIME type: image/jpeg) Other versions Originally from en. ... Flying machine redirects here. ... The term g force or gee force refers to the symbol g, the force of acceleration due to gravity at the earths surface. ... EUROCAE, the European Organisation for Civil Aviation Equipment was formed in Lucerne on the 24th April, 1963. ... An example of a FDR (Flight Data Recorder). ... Cockpit Voice Recorder (Exhibit in Deutsches Museum, Munich, Germany). ...


EUROCAE ED-112 (Minimum Operational Performance Specification for Crash Protected Airborne Recorder Systems) defines the minimum specification to be met for all aircraft requiring flight recorders for recording of flight data, cockpit audio, images and CNS/ATM digital messages and used for investigations of accidents or incidents. [1] When issued in March 2003 ED-112 superseded previous ED-55 and ED-56A that were separate specifications for FDR and CVR. FAA TSOs for FDR and CVR reference ED-112 for characteristics common to both types. FAA may refer to: Federal Aviation Administration in the United States Fleet Air Arm in the UK Royal Navy Fuerza Aérea Argentina in Argentina This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ... A Technical Standard Order (TSO) is a minimum performance standard issued by the United States Federal Aviation Administration for specified materials, parts, processes, and appliances used on civil aircraft. ...


In order to facilitate recovery of the recorder from an aircraft accident site they are required to be coloured bright yellow or orange with reflective surfaces. All are lettered "FLIGHT RECORDER DO NOT OPEN" on one side in English and the same in French on the other side. To assist recovery from submerged sites they must be equipped with an underwater locator beacon which is automatically activated in the event of an accident. The Underwater Locator Beacon is a device fitted to aviation flight recorders such as the cockpit voice recorder and flight data recorder. ...


Early attempts at making flight recorders were made by François Hussenot in July 1941 at the Marignane flight test center, France; they were essentially photograph-based flight recorders. In 1947, Hussenot grounded the Société Française des Instruments de Mesure (today part of the Safran group) with an associate, so as to market his invention, which came to be known as the hussenograph.[1] At about the same period of time, in 1953, Australian engineer Dr. David Warren conceived a device that would record the voices and instruments reading, when working with the Australian Research Laboratories.[2] François Hussenot (March 22, 1912 – May 16, 1951) was a French engineer, credited with the invention of one of the early forms of the flight data recorder. ... Marignane is a commune of the Bouches-du-Rhône département, in southern France, located near Marseille. ... For the lead singer of Republica see Saffron Saffron is the name given to the dried stigmata and part of the style of the saffron crocus, traditionally called Crocus sativus, which are harvested, dried, and used for cooking. ...


Since the 1970s most large civil jet transports have been additionally equipped with a "Quick Access Recorder" (QAR). This records data on a removable storage medium. Access to the FDR and CVR is necessarily difficult because of the requirement that they survive an accident. They also require specialist equipment to read the recording. The QAR recording medium is readily removable and is designed to be read by equipment attached to a standard desktop computer. In many airlines the quick access recordings are scanned for 'events', an event being a significant deviation from normal operational parameters. This allows operational problems to be detected and eliminated before an accident or incident results.


Many modern aircraft systems are digital or digitally controlled. Very often the digital system will include Built-In Test Equipment which records information about the operation of the system. This information may also be accessed to assist with the investigation of an accident or incident.


The U.S. National Transportation Safety Board has asked for the installation of cockpit image recorders in large transport aircraft to provide information that would supplement existing CVR and FDR data in accident investigations. They also recommended image recorders be placed into smaller aircraft that are not required to have a CVR or FDR.[3] The rationale is that what is seen on an instrument by the pilots of an aircraft is not necessarily the same as the data sent to the display device. This is particularly true of aircraft equipped with electronic displays (CRT or LCD). A mechanical instrument is likely to preserve its last indication but this is not the case with an electronic display. Seal of the National Transportation Safety Board The National Transportation Safety Board (NTSB) is a U.S. government independent organization responsible for investigation of accidents involving aviation, highway, marine, pipelines and railroads in the United States. ... Cathode ray tube employing electromagnetic focus and deflection Cutaway rendering of a color CRT: 1. ... LCD redirects here. ...


Such systems, estimated to cost less than $8,000 installed, typically consist of a camera and microphone located in the cockpit to continuously record cockpit instrumentation, the outside viewing area, engine sounds, radio communications, and ambient cockpit sounds. As with conventional CVRs and FDRs, data from such a system is stored in a crash-protected unit to ensure survivability.[3]


See also

An example of a FDR (Flight Data Recorder). ... Cockpit Voice Recorder (Exhibit in Deutsches Museum, Munich, Germany). ... The term Black Box is a placeholder name used casually, often by journalists, to refer to a collection of several different recording devices used in transportation: the flight data recorder, flight recorder and cockpit voice recorder in aircraft, the event recorder in railway diesel locomotives, the Event Data Recorder in... Air safety is a broad term encompassing the theory, investigation and categorization of flight failures, and the prevention of such failures through appropriate regulation, as well as through education and training. ... This article is about Emergency Locator Transmitters (ELTs). ...

References

  1. ^ http://www.yadubiz.com/suetone/personne/personne_accueil.asp (in French) and http://www.supaero.fr/en/the-school/famous-alumni.html
  2. ^ Australian Research Laboratories
  3. ^ a b http://www.ntsb.gov/recs/mostwanted/aviation_recorders.htm

External links


  Results from FactBites:
 
flight recorder: Definition and Much More from Answers.com (1587 words)
The value of flight data recorders was clearly evident in the investigation of the ATR-72 accident in Roselawn, Indiana in October 1994.
The flight data recorder (FDR) is a flight recorder used to record specific aircraft performance parameters.
This is roughly equivalent to an impact velocity of 270 knots and a deceleration or crushing distance of 450 mm.
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