We know about the Black box, but what is the QACVR?

The second black box was recovered last week from the disastrous China Eastern crash that happed in Wuzhou, China. The black boxes are set to arrive in the U.S. for decoding and investigation today on the 5th of April. Whilst it will take up to months and even years before anything significant can be revealed from the crash, there might be a quicker way for the airline to retrieve recordings and data, according to a former pilot who used to work for a Chinese airline.

What is a Black Box, again?

Anyone who is slightly interested in aviation is aware of what a black box is. A black box is a colloquial name for a flight recorder that contains mainly two components, the flight data recorder (FDR), and the cockpit voice recorder (CVR). It was colloquially called the black box due to the components being encased in a non-reflective black housing. In modern-day, the “black box” is painted in a fluorescent and bright hue of “safety orange” for easier identification after an accident. The FDR preserves the recent history of flight parameters such as airspeed, attitude, altitude, etc. while the CVR records the recent history of various sounds in the cockpit via the boom headsets, including the conversations of pilots. The combined records were proven to be detrimental to accident and incident investigations in the aviation industry and it is a mandatory requirement for commercial airliners to have a functioning CVR before the aircraft can be dispatched.

informative
Honeywell is the leading black box manufacturer in the industry|© Honeywell Aerospace

Limitations of the standard CVR

The black box is seemingly the one crucial component in reviving the scenario before impacts. However, it is not without flaws and limitations, continuous upgrading of the black box has been suggested by ICAO after some recent crashes.

The black box is designed to survive an impact of 3400g and a temperature of over 1000°C required by the European Organization for Civil Aviation Equipment (EUROCAE) ED-112. The minimum physical strength of the housing would allow the black box to withstand an impact at roughly 270 kt and the crushing depth of 4.5km (15,000ft) underwater. The recent MU5735 recorded a surprisingly high speed right before impact at 450kts, which is more than the cruising speed of an airliner. If the speed data on FlightRadar24 were correct, it would have been a miracle for the black box to be found unscathed.

discriptive
“Safety Orange” painted on the “black” box for easier identification among debris|©BBC

Besides the FDR and CVR, the black box is also equipped with an emergency locator beacon transmitter (ELT) that emits ultrasonic signals for 90days that is detectible down to 2km from the surface. This means if the black box is not recovered before the battery drained, the chance of finding it is just doing to be slimmer as time goes by. Air France’s flight 447 had its black box sink to the depth of the Atlantic Ocean and the CVR was not recovered after 2 years of search. The recording and data were eventually recovered. This particular accident prompted the extension of the battery life of the ELT.

The standard FDR is able to record up to 25 hr of flight parameters specified by aviation authorities. However, the standard CVR can only record up to 30 or 50 mins before the end of the recording depending on the model and make of the device. In recent years, the requirement for the amount of time was extended to 2 hours as it has been deemed not enough for incident investigations where the flights landed safely and the incident was more than 30mins from landing. In 2018, the NTSB had proposed to FAA to extend the duration of the CVR to up to 25hr to aid in investigations.

Last but not least, to retrieve data from the black box, the device will need to be sent back to the manufacturer for decoding before information can be released. This feature has led to the development of the QACVR, which is capable of streaming live data to ground stations without the need for decoding.

decorative
The Civil Aviation Authority of China (CAAC) celebrates the QACVR being installed on the Boeing 787|© caacnews.com.cn

Quick Access Cockpit Voice Recorder (QACVR)

Since there were numerous accidents where the black box was never recovered, the need for real-time access of flight data and voice recording comes to light. From 1970, a new detachable recorder called Quick Access Recorder (QAR) became popular among airliners as it is readily removable and can be connected to a desktop computer.

However, since it is not standard equipment or an optional item from the OEM (Original Equipment Manufacturer e.g. Airbus or Boeing etc.), the installation of the QACVR is controversial as it also violates privacy issues with its prolonged recording time. With SSD memory installed, a QACVR can record up to 3000hr of cockpit sounds. Unlike the CVR, the recordings in the QACVR are not erasable by the pilots through a button. The latest generation of QACVR is also compatible with 4G and Wifi, making the data readily accessible for airline operators.

infomative
Recordings are readily accessible via a USB port from the QACVR| ©Donica

Privacy Issues

From 2018, all airliners in China are required to be equipped with the QACVR, including the Boeing 737 that crashed as flight MU5375. According to EASA, the sole purpose of the QACVR is to aid in accident and incident investigations and shall not be used for the monitoring of flight operations. There have been talks that Chinese airlines are using the QACVR as a means to monitor cockpit behaviour. Grounding of pilots due to the use of non-standard phraseology is not uncommon and eventually, this culture to eavesdrop on pilots became a management style among Chinese airlines.

Could China Eastern had already retrieved the recording right after the crash? Do you think pilots can do their jobs properly if they are being monitored as soon as they enter the cockpit? Would the installation of QACVR add unnecessary stress to the flight crew? Let us know what you think below. For more aviation news from Travel Radar, click here.

 

 

Subscribe to our Weekly Digest!




More News

IAG’s Financial Performance Resulted in a Loss in First Quarter of 2024

IAG’s financial performance has resulted in a loss in...

Southwest Airlines’ Financial Performance Results In Loss In First Quarter Of 2024

Southwest Airlines experienced a significant financial downturn in the...

Turkish Airlines Partners with Airbus and Rolls-Royce to Enhance Turkey’s Aerospace Capabilities

Turkish Airlines has recently announced a new powerful partnership...
Leo Cheung
Leo Cheung
Aviation Reporter - Born and raised in Hong Kong, Leo has decided to pursue a career in aviation under the influence of the old Kai Tak Airport back in the days. With a degree in aviation, he has joint Travel Radar as an aviation reporter to diversify his views and apply professional knowledge to anyone who is interested in commercial aviation. He regularly contributes articles with 'inside the cockpit' knowledge.

1 COMMENT

1 COMMENT

  1. Good article. One typo: “The combined records were proven to be detrimental to accident and incident investigations in the aviation industry and it is a mandatory requirement for commercial airliners to have…”

    I think you mean “essential” instead of “detrimental”.

LEAVE A REPLY

Please enter your comment!


>
Wordpress themeseotakipçi satın alankara implant fiyatları11yol kapanıpassport psdbatman evden eve nakliyatbalkon köşe takımılastik patlatanevden eve nakliyatkartal evden eve nakliyatfatih antika eşya alanlarfenerbahçe antika eşya alanlarnakliyatantika alanlarantika alanlarwoocommerce baselJannah themeeskişehir inşaat şirketlerieskişehir uydu tamirkitap alanlarantika alanlarantika alanlarseoEskişehir uydupgcdpgcdpmsatuzla evden eve nakliyatAntika alan yerlergaziantep evden eve nakliyateskişehir saç protezihayır lokmasıtuzla evden eve nakliyathayır lokmasıpendik evden eve nakliyatgölcük evden eve nakliyatgölcük evden eve nakliyatistanbul evden eve nakliyatankara evden eve nakliyatporselen kaplama dislerankara diş estetiğidiş teli tedavisimersin evden eve nakliyatEtimesgut evden eve nakliyattuzla asansörlü nakliyatkartal evden eve nakliyatgebze evden eve nakliyatankara evden eve nakliyatankara parca esya tasımaankara gülüş tasarımıankara gülüş tasarımıankara implant fiyatlarıniğde evden eve nakliyatistanbul saç ekimiankara çıkışlı günübirlik turlarEtimesgut evden eve nakliyatEtimesgut evden eve nakliyatkadıköy evden eve nakliyatmersin evden eve nakliyatçankaya evden eve nakliyatankara parca esya tasımamaltepe evden eve nakliyattuzla evden eve nakliyatankara implant fiyatlarıankara gülüş estetiğiyenimahalle evden eve nakliyaten yakın çekiciAntalya Çitseo çalışmasıistanbul hayır lokmasıata şehir evden eve nakliyatmaltepe evden eve nakliyatüsküdar evden eve nakliyatİstanbul evden eve nakliyatmaldives casinospoodleKartal evden eve nakliyatçankaya evden eve nakliyatataşehir evden eve nakliyatankara ofis taşımacılığıboğazda özel tekne kiralamadiş eti ağrısıtuzla nakliyateryaman evden eve nakliyateskişhir uydu servisieskişhir uydu servisipoodlepomeranianzibilyonbet girişdextools trendingdextools trending botdextools trending costdextools trending servicedextools trending algorithmdextools botcoinmarketcap trendingcoinmarketcap trending botpinksale trendingpinksale trending botpancakeswap botuniswap botpancakeswap sniper botuniswap sniper botfront running botfront run botmev botzibilyonbet girişdextools botdextools trending algorithmpinksale trending botprediction botpancakeswap prediction botEtimesgut evden eve nakliyatankara gülüş tasarımıbatman nakliyatmersin nakliyatköpek ilanlarımersin evden eve nakliyatankara evden eve nakliyatMedyumeskişehir uydu servisimersin evden eve nakliyatetiler antika alanlarataşehir antika alanlareskişehir emlakAnkara implant fiyatlarıİstanbul mevlid lokmasıbatman evden eve nakliyattuzla evden eve nakliyatçankırı evden eve nakliyatderince evden eve nakliyatankara evden eve nakliyatankara ofis taşımacılığıankara asansörlü nakliyatankara eşya depolamamersin evden eve nakliyatboerboel yavrupomeranian ilanlarımarsbahisEtimesgut evden eve nakliyattuzla evden eve nakliyattarsus evden eve nakliyatçankaya evden eve nakliyatkeçiören evden eve nakliyatEtimesgut evden eve nakliyatortodontigoogle adskeçiören evden eve nakliyatsancaktepe evden eve nakliyatgülüş tasarımıEskişehir yabancı dil okuluvozol 12000Etimesgut evden eve nakliyatgrandpashabettuzla evden eve nakliyatkadıköy evden eve nakliyatetimesgut evden eve nakliyatlamine dis kaplamadis beyazlatmamamak evden eve nakliyatomegleköpekçipoodle ilanlarıkaliteli replika saatUcuz uc satın alPubg ucgölbaşı evden eve nakliyatcasibomoto çekicişehirler arası nakliyatsancaktepe evden eve nakliyatpendik evden eve nakliyatporselen lamine kaplamaEtimesgut evden eve nakliyatçankaya evden eve nakliyatkocaeli evden eve nakliyateskişehir televizyon tamirimersin evden eve nakliyatpoodlemamak evden eve nakliyatdarıca evden eve nakliyatankara gülüş tasarımıankara asfalt bakımetimesgut evden eve nakliyatEskişehir özel ingilizce dersiankara asansörlü nakliyatankara evden eve nakliyatantikaantikaantika eşya alanlarmağaza koku makinesiodunpazarı emlakMalatya halı yıkamafree cheatsbetneon girişEtimesgut evden eve nakliyatİstanbul mevlid lokmasıbetnanoeryaman evden eve nakliyatkocaeli evden eve nakliyatmersin evden eve nakliyatmersin asansörlü nakliyatmersin asansörlü nakliyatkahramanmaraş asansörlü nakliyatWordpress themeseotakipçi satın alankara implant fiyatları11yol kapanıpassport psdbatman evden eve nakliyatbalkon köşe takımılastik patlatanevden eve nakliyatkartal evden eve nakliyatfatih antika eşya alanlarfenerbahçe antika eşya alanlarnakliyatantika alanlarantika alanlarwoocommerce baselJannah themeeskişehir inşaat şirketlerieskişehir uydu tamirkitap alanlarantika alanlarantika alanlarseoEskişehir uydupgcdpgcdpmsatuzla evden eve nakliyatAntika alan yerlergaziantep evden eve nakliyateskişehir saç protezihayır lokmasıtuzla evden eve nakliyathayır lokmasıpendik evden eve nakliyatgölcük evden eve nakliyatgölcük evden eve nakliyatistanbul evden eve nakliyatankara evden eve nakliyatporselen kaplama dislerankara diş estetiğidiş teli tedavisimersin evden eve nakliyatEtimesgut evden eve nakliyattuzla asansörlü nakliyatkartal evden eve nakliyatgebze evden eve nakliyatankara evden eve nakliyatankara parca esya tasımaankara gülüş tasarımıankara gülüş tasarımıankara implant fiyatlarıniğde evden eve nakliyatistanbul saç ekimiankara çıkışlı günübirlik turlarEtimesgut evden eve nakliyatEtimesgut evden eve nakliyatkadıköy evden eve nakliyatmersin evden eve nakliyatçankaya evden eve nakliyatankara parca esya tasımamaltepe evden eve nakliyattuzla evden eve nakliyatankara implant fiyatlarıankara gülüş estetiğiyenimahalle evden eve nakliyaten yakın çekiciAntalya Çitseo çalışmasıistanbul hayır lokmasıata şehir evden eve nakliyatmaltepe evden eve nakliyatüsküdar evden eve nakliyatİstanbul evden eve nakliyatmaldives casinospoodleKartal evden eve nakliyatçankaya evden eve nakliyatataşehir evden eve nakliyatankara ofis taşımacılığıboğazda özel tekne kiralamadiş eti ağrısıtuzla nakliyateryaman evden eve nakliyateskişhir uydu servisieskişhir uydu servisipoodlepomeranianzibilyonbet girişdextools trendingdextools trending botdextools trending costdextools trending servicedextools trending algorithmdextools botcoinmarketcap trendingcoinmarketcap trending botpinksale trendingpinksale trending botpancakeswap botuniswap botpancakeswap sniper botuniswap sniper botfront running botfront run botmev botzibilyonbet girişdextools botdextools trending algorithmpinksale trending botprediction botpancakeswap prediction botEtimesgut evden eve nakliyatankara gülüş tasarımıbatman nakliyatmersin nakliyatköpek ilanlarımersin evden eve nakliyatankara evden eve nakliyatMedyumeskişehir uydu servisimersin evden eve nakliyatetiler antika alanlarataşehir antika alanlareskişehir emlakAnkara implant fiyatlarıİstanbul mevlid lokmasıbatman evden eve nakliyattuzla evden eve nakliyatçankırı evden eve nakliyatderince evden eve nakliyatankara evden eve nakliyatankara ofis taşımacılığıankara asansörlü nakliyatankara eşya depolamamersin evden eve nakliyatboerboel yavrupomeranian ilanlarımarsbahisEtimesgut evden eve nakliyattuzla evden eve nakliyattarsus evden eve nakliyatçankaya evden eve nakliyatkeçiören evden eve nakliyatEtimesgut evden eve nakliyatortodontigoogle adskeçiören evden eve nakliyatsancaktepe evden eve nakliyatgülüş tasarımıEskişehir yabancı dil okuluvozol 12000Etimesgut evden eve nakliyatgrandpashabettuzla evden eve nakliyatkadıköy evden eve nakliyatetimesgut evden eve nakliyatlamine dis kaplamadis beyazlatmamamak evden eve nakliyatomegleköpekçipoodle ilanlarıkaliteli replika saatUcuz uc satın alPubg ucgölbaşı evden eve nakliyatcasibomoto çekicişehirler arası nakliyatsancaktepe evden eve nakliyatpendik evden eve nakliyatporselen lamine kaplamaEtimesgut evden eve nakliyatçankaya evden eve nakliyatkocaeli evden eve nakliyateskişehir televizyon tamirimersin evden eve nakliyatpoodlemamak evden eve nakliyatdarıca evden eve nakliyatankara gülüş tasarımıankara asfalt bakımetimesgut evden eve nakliyatEskişehir özel ingilizce dersiankara asansörlü nakliyatankara evden eve nakliyatantikaantikaantika eşya alanlarmağaza koku makinesiodunpazarı emlakMalatya halı yıkamafree cheatsbetneon girişEtimesgut evden eve nakliyatİstanbul mevlid lokmasıbetnanoeryaman evden eve nakliyatkocaeli evden eve nakliyatmersin evden eve nakliyatmersin asansörlü nakliyatmersin asansörlü nakliyatkahramanmaraş asansörlü nakliyat
deneme bonusuCasinoslot girişbig bass bonanza oynaAviator oynasugar rush oynasweet bonanzagates of olympus oynaBahisnowcasibom girişCasinoslotwild west gold demo oynaredbullholdenracing.comdenemebonususiteler.commarsbahisMatadorbetEscortSaatlik escortManisa escortGümüşhane escortfethiye escortDeneme Bonusu Veren SitelerDeneme Bonusucasibomcasibom girişŞişli escortizmir escortDenizli escortMalatya Escortşanlıurfa escortHacklinkBeşiktaş escortAtaşehir escortBeylikdüzü escortkadıköy escortcialisViagraBahis siteleriEsenyurt escortmasözmasözantalya escortcasibombonusbetturkeyfixbetdeneme bonusu veren sitelerdeneme bonusu 2024casibombets10jojobet girişpusulabetbetmatik twitterbaywinGrandpashabetcasibomholiganbetbettilt girişcasibom girişslot sitelerisekabetbetmatikbetkanyonsekabetholiganbetbetmatikcasibomcasibomcasibomcasibomcasibomcasibomcasibomcasibomcasibomhitbetsahabetsahabetbettiltvdcasinoilbetcratosroyalbettümbetbaywinslot sitelericanlı casino sitelericasino sitelerislot siteleribahis siteleribaywinİnterbahisqueenbetmadridbetartemisbetEsenyurt EscortBursa EscortErzincan EscortKayseri EscortMuğla EscortAlanya EscortBahçeşehir EscortBetofficecasibomcasibomcasibomcasibommarsbahiscasibomcasibomcasibomcasibomcasibomPusulabetmeritkingmeritking1xbetbahiscombycasinoikimisliorisbetkaçak maç izlecasibom girişcasibom girişcasibom girişcasibom giriş twittercasibom girişcasibom girişfreespin ne ise yararNisanbettipobettipobet,tipobet giriş,tipobet twitterelitcasino,elitcasino güncel giriş,elitcasino twitter,elitcasino girişCasibomataşehir escortjojobetbetturkeybetturkey girişgalabetcasibom girişcasibom girişdeneme bonusuCasinoslot girişbig bass bonanza oynaAviator oynasugar rush oynasweet bonanzagates of olympus oynaBahisnowcasibom girişCasinoslotwild west gold demo oynaredbullholdenracing.comdenemebonususiteler.commarsbahisMatadorbetEscortSaatlik escortManisa escortGümüşhane escortfethiye escortDeneme Bonusu Veren SitelerDeneme Bonusucasibomcasibom girişŞişli escortizmir escortDenizli escortMalatya Escortşanlıurfa escortHacklinkBeşiktaş escortAtaşehir escortBeylikdüzü escortkadıköy escortcialisViagraBahis siteleriEsenyurt escortmasözmasözantalya escortcasibombonusbetturkeyfixbetdeneme bonusu veren sitelerdeneme bonusu 2024casibombets10jojobet girişpusulabetbetmatik twitterbaywinGrandpashabetcasibomholiganbetbettilt girişcasibom girişslot sitelerisekabetbetmatikbetkanyonsekabetholiganbetbetmatikcasibomcasibomcasibomcasibomcasibomcasibomcasibomcasibomcasibomhitbetsahabetsahabetbettiltvdcasinoilbetcratosroyalbettümbetbaywinslot sitelericanlı casino sitelericasino sitelerislot siteleribahis siteleribaywinİnterbahisqueenbetmadridbetartemisbetEsenyurt EscortBursa EscortErzincan EscortKayseri EscortMuğla EscortAlanya EscortBahçeşehir EscortBetofficecasibomcasibomcasibomcasibommarsbahiscasibomcasibomcasibomcasibomcasibomPusulabetmeritkingmeritking1xbetbahiscombycasinoikimisliorisbetkaçak maç izlecasibom girişcasibom girişcasibom girişcasibom giriş twittercasibom girişcasibom girişfreespin ne ise yararNisanbettipobettipobet,tipobet giriş,tipobet twitterelitcasino,elitcasino güncel giriş,elitcasino twitter,elitcasino girişCasibomataşehir escortjojobetbetturkeybetturkey girişgalabetcasibom girişcasibom giriş