EgyptAir flight data shows smoke detected in bathroom before crash: Report

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Data shows smoke in EgyptAir plane bathroom

Data transmitted from a doomed EgyptAir flight minutes before it fell off radar screens suggests a fire had broken out on board the plane, according to an aviation industry website.

AvHerald.com is reporting that data transmissions from EgyptAir Flight 804 to ground stations show smoke was detected in a bathroom near the cockpit.

The ACARS (Aircraft Communications Addressing and Reporting) system sent a series of messages investigators are poring over to determine what may have happened on the plane before it went down, the website reported.

SEE ALSO: EgyptAir Debris, Passengers' Belongings Found

Sixty-six people were aboard the Airbus A320 flying from Paris to Cairo before it vanished early Thursday morning. Wreckage from the plane was found Friday in the Mediterranean Sea some 180 miles off the Egyptian coast.

See images related to the tragedy:

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EgyptAir flight data shows smoke detected in bathroom before crash: Report
A still image from video released May 19, 2016 shows EgyptAir Airbus A320 SU-GCC taking off at Brussels, Belgium, September 26, 2015. Mandatory credit The YottaTube/via REUTERS TV ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. EDITORIAL USE ONLY. NO RESALES. NO ARCHIVE. REUTERS IS UNABLE TO INDEPENDENTLY VERIFY THIS IMAGE.
An employee works at the EgyptAir desk at Charles de Gaulle airport, after an EgyptAir flight disappeared from radar during its flight from Paris to Cairo, in Paris, France, May 19, 2016. REUTERS/Christian Hartmann
An unidentified woman reacts as she waits outside the Egyptair in-flight service building, where relatives and friends of passengers who were flying in an EgyptAir plane that vanished from radar en route from Paris to Cairo are being held, at Cairo International Airport, Egypt May 19, 2016. REUTERS/Amr Abdallah Dalsh
An unidentified man reacts as he waits outside the Egyptair in-flight service building, where relatives and friends of passengers who were flying in an EgyptAir plane that vanished from radar en route from Paris to Cairo are being held, at Cairo International Airport, Egypt May 19, 2016. REUTERS/Mohamed Abd El Ghany
An unidentified woman reacts as she waits outside the Egyptair in-flight service building, where relatives and friends of passengers who were flying in an EgyptAir plane that vanished from radar en route from Paris to Cairo are being held, at Cairo International Airport, Egypt May 19, 2016. REUTERS/Mohamed Abd El Ghany
The flight path of EgyptAir flight MS804 from Paris to Cairo is seen on a flight tracking screen May 19, 2016. Courtesy Flightradar24.com/Handout via Reuters 
FILE PHOTO - An EgyptAir plane is seen on the runway at Cairo Airport, Egypt in this September 5, 2013 file photo. REUTERS/Mohamed Abd El Ghany/File Photo
Unidentified relatives and friends of passengers who were flying in an EgyptAir plane that vanished from radar en route from Paris to Cairo react as they wait outside the Egyptair in-flight service building where relatives are being held at Cairo International Airport, Egypt May 19, 2016. REUTERS/Amr Abdallah Dalsh
FILE PHOTO - A general view shows the Terminal 1 at the Charles de Gaulle International Airport in Roissy, near Paris September 17, 2014, where missing EgyptAir flight MS804 originated from. REUTERS/Charles Platiau/File Photo
CAIRO, EGYPT - MAY 19: Relatives of passengers onboard missing EgyptAir flight MS804 cry at Cairo International Airport as they try to receive information in Cairo, Egypt on May 19, 2016. Airliner disappeared after entering the Egyptian airspace during its flight from Paris to Cairo. (Photo by Ala Ahmed/Anadolu Agency/Getty Images)
French police officers and a sniffer dog patrol a terminal building at Charles de Gaulle airport, operated by Aeroports de Paris, in Roissy, France, on Thursday, May 19, 2016. Egypt deployed naval ships to search for an EgyptAir Airbus A320 en route to Cairo from Paris that went missing overnight off the coast of the North African country with 66 people on board. Photographer: Christophe Morin/Bloomberg via Getty Images
A screenshot from Flightradar24.com showing the flight track of EgyptAir flight MS804 from Paris, France, to Cairo, Egypt. The Airbus A320 with 66 people on board disappeared from radar on May 19, 2016. TASS (Photo by TASS\TASS via Getty Images)
Egypt's Aviation Minister Sherif Fathy speaks during a press conference on May 19, 2016 at the Ministry of Civil Aviation at Cairo's airport after an EgyptAir flight from Paris to Cairo crashed into the Mediterranean sea with 66 people on board. The Airbus A320 fell 22,000 feet and swerved sharply twice in Egyptian airspace before it disappeared from radar screens, Greek Defence Minister Panos Kammenos told a news conference. Fathy said he could not rule out either terrorism or a technical problem. / AFP / KHALED DESOUKI (Photo credit should read KHALED DESOUKI/AFP/Getty Images)
An employee sits at EgyptAir Airlines check in desk at Charles de Gaulle airport, operated by Aeroports de Paris, in Roissy, France, on Thursday, May 19, 2016. Egypt deployed naval ships to search for an EgyptAir Airbus A320 en route to Cairo from Paris that went missing overnight off the coast of the North African country with 66 people on board. Photographer: Christophe Morin/Bloomberg via Getty Images
CAIRO, EGYPT - MAY 19: Travelers come and go from terminal 3 at the Cairo International Airport on May 19, 2016 in Cairo, Egypt. EgyptAir flight MS804 from Paris to Cairo carrying 66 passengers and crew vanished over the eastern Mediterranean last night. (Photo by David Degner/Getty Images).
Egypt's Civil Aviation Minister Sherif Fathy speaks, after EgyptAir plane vanished from radar en route from Paris to Cairo, during a news conference at headquarters of ministry in Cairo, Egypt May 19, 2016. REUTERS/Mohamed Abd El Ghany
Unidentified relatives and friends of passengers who were flying in an EgyptAir plane that vanished from radar en route from Paris to Cairo react as they wait outside the Egyptair in-flight service building where relatives are being held at Cairo International Airport, Egypt May 19, 2016. REUTERS/Amr Abdallah Dalsh
Egypt and EgyptAir flags are seen infront of an Egyptair in-flight service building, where relatives of passengers who were flying in an EgyptAir plane that vanished from radar en route from Paris to Cairo are being held, at Cairo International Airport, Egypt May 19, 2016. REUTERS/Amr Abdallah Dalsh
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Terrorism has been cited as a potential cause of the crash — though officials have cautioned against speculation and there has been no credible claim of responsibility from any group.

U.S. intelligence sources tell NBC News they are aware of the AvHerald.com report about the ACARS data and have no reason to believe the information is not accurate.

SEE ALSO: Deep Seas, Underwater Mountains Could Slow EgyptAir Search

The report includes the plane-to-ground messages sent in the final minutes of the flight:

00:26Z 2600 SMOKE LAVATORY SMOKE

00:27Z 2600 AVIONICS SMOKE

00:28Z 561100 R FIXED WINDOW SENSOR

00:29Z 2200 AUTO FLT FCU 2 FAULT

00:29Z 2700 F/CTL SEC 3 FAULT

The information would suggest the possibility of smoke or a fire in close proximity to the electronics and equipment bay of the Airbus below the floor of the cockpit.

The timestamps refer to "Zulu" time -- or Greenwich Mean Time. Thus, the information of smoke in the lavatory was sent at 12:26 a.m. GMT, which corresponds to 2:26 a.m. local time of the flight -- approximately 10 minutes before the flight fell off radar.

An "FCU" refers to a unit in cockpit the pilot uses to input instructions into the flight computer. "SEC3" refers to the computer that controls the spoilers and elevator computers of the plane.

No mayday call was sent from the jet.

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