Attention will now likely focus on the condition of the Boeing 777's electronic systems as it charted its new course back toward and then across Malaysia.
While radar black spots can exist, experts said the plane's transponders normally would have been emitting signals that would have been picked up by civilian radar. The fact that it apparently wasn't detected suggests they were either disabled or switched off. Planes with no transponders can still be tracked by radar.
The United States has sent two Navy ships, at least one of which is equipped with helicopters, and a Navy P 3C Orion plane that can detect small debris in the water. It said the Malaysian government had done a "tremendous job" organizing the land and sea effort.
Malaysian police chief Khalid Abu Bakar, who has been ordered to look at possible criminal aspects in the disappearance of Flight MH370, said hijacking, sabotage and issues related to the pilots' psychological health were all being considered.
But local newspaper Berita Harian quoted Malaysia's air force chief, Gen. showing the plane to be near Pulau Perak at the northern approach to the Strait of Malacca, a busy waterway that separates the western coast of Malaysia and Indonesia's Sumatra island. It was flying slightly lower, at around 29,528 feet, he said.
Civil aviation chief Azharuddin Abdul Rahman said the search remained "on both sides" of Malaysia.
A radar antenna on the ground sends electromagnetic waves that reflect from the surface of an aircraft and almost instantly return, allowing controllers to calculate how far away a plane is. The antenna is mounted on a rotating platform, sending and receiving signals 360 degrees across the sky, enabling the plane's direction to be tracked by constant sweeps.
Radar stations at airports are designed to track planes up to about 60 miles. They are used to help sequence and space landing aircraft. Another series of stations called air route surveillance radar can track planes 200 250 miles away, depending on weather and the age of the technology. Station locations are selected to allow for a slight overlap so planes in heavy traffic areas are never out of reach of radar.
A high ranking military official involved in the investigation confirmed the report.
"Throughout the entire flight, they were talking to us and they were actually smoking throughout the flight," said Roos, who didn't immediately reply to a message sent to her via Facebook. Their presence on the flight had raised speculation of a possible terrorist link.
Low flying planes can sometimes avoid radar detection. There is no set height they must be under, but the farther away they are from a radar station, the higher they can be because of the angle of the radar antenna and the curvature of the Earth.
said the Prada Double Bag Pink
Malaysia Airlines flight reportedly veered off course
The search was initially focused hundreds of miles (kilometers) to the east, in waters off Vietnam, with more than 40 planes and ships from at least 10 nations searching the area without finding a trace of the missing aircraft.
"After that, the signal from the plane was lost," he was quoted as saying.
The system has limitations: Military and civilian air traffic controllers know something is moving through the air but might not know what it is. So planes were outfitted with transponders that can send a unique signal back to the radar station, which can differentiate them from other aircraft. From this signal, controllers can tell the flight number, heading, speed and altitude.
An Australian TV station reported that the first officer on the missing plane, Fariq Abdul Hamid, had invited two women into the cockpit during a flight two years ago. One of the women, Jonti Roos, described the encounter on Australia's "A Current Affair."
Malaysian police chief Khalid Abu Bakar said investigators had determined one was a 19 year old Iranian, Pouria Nourmohammadi Mehrdad. "We believe he is not likely to be a member of any terrorist group," Khalid said.
Interpol identified the second man as Seyed Mohammed Reza Delavar, a 29 year old Iranian, and released an image of the two boarding at the same time. Interpol Secretary General Ronald K. Noble said the two men traveled to Malaysia on their Iranian passports, then apparently switched to Prada Handbags Black And White
their stolen Austrian and Italian documents. We are looking at it very carefully."
Roos said she and a friend were allowed to stay in the cockpit during the entire one hour flight on Dec. 14, 2011, from Phuket, Thailand, to Kuala Lumpur. She said the arrangement did not seem unusual to the plane's crew.
western coast of Malaysia was "now Prada Wallet On Chain 2017 the focus," but the airline subsequently said that phrase was an oversight. It didn't elaborate.
Asked if terrorism could be ruled out, Brennan replied, "No, I wouldn't rule it out. Not at all."
Earlier Tuesday, Malaysia Airlines said in a statement that search and rescue teams had expanded their scope to the Strait of Malacca. An earlier statement Prada Handbag Nylon
The development added confusion and mystery into one of most puzzling aviation incidents of recent time, and it has raised questions about why the Malaysia Airlines flight apparently was not transmitting signals detectable by civilian radar, why its crew was silent about the course change and why no distress calls were sent after it turned back.
Many experts have been working on the assumption there was a catastrophic event on the flight such as an explosion, engine failure, terrorist attack, extreme turbulence, pilot error or even suicide. The director of the CIA said in Washington that he still would not rule out terrorism. Saturday, bound for Beijing.
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