Crew members look outside windows from a Malaysian air force CN235 aircraft during a search-and-rescue operation to find the missing Malaysia Airlines Flight 370 over the Strait of Malacca. Prime Minister Najib Razak said on Saturday that Malaysia was ending its search for the vanished jetliner in the South China Sea after investigations indicated the missing plane likely turned far to the west. 
 
 March 15, 2014 Crew members look outside windows from a Malaysian air force CN235 aircraft during a search-and-rescue operation to find the missing Malaysia Airlines Flight 370 over the Strait of Malacca. Prime Minister Najib Razak said on Saturday that Malaysia was ending its search for the vanished jetliner in the South China Sea after investigations indicated the missing plane likely turned far to the west. Mohd Rasfan/AFP/Getty Images 
 
 In the most comprehensive account to date of the missing Malaysia Airlines Flight 370’s fate, Malaysian Prime Minister Najib Razak on Saturday said that the plane was steered off course after its communications systems were intentionally disabled and that it could have flown for seven additional hours. 
 
 Days after Malaysia Airlines Flight 370 went missing over the Gulf of Thailand, Malaysian authorities said they have made little progress in a search that is becoming more difficult by the day. 
 
 Days after Malaysia Airlines Flight 370 went missing over the Gulf of Thailand, Malaysian authorities said they have made little progress in a search that is becoming more difficult by the day. 
 
 The search for a missing Malaysian jetliner with 239 people onboard could expand westward into the Indian Ocean based on information that the plane may have flown for at least four hours after it dropped from civilian radar, U.S. officials said Thursday. 
 
 A senior U.S. official said the information came from data sent via a satellite communications system by Malaysia Airlines Flight MH370. That data has convinced U.S. officials that the plane’s engines continued to run for at least four hours after all other communication was lost. 
 
 If the plane flew on for hours, it raises the likelihood of foul play. U.S. officials said someone in the cockpit could have turned off the transponder and radio before flying on. 
 
 “The fact that a modern airplane with a huge amount of redundancy appeared to change course at the same time that the transponder was turned off, that suggests that someone unauthorized took control of that airplane, like an intruder or one of the pilots,” said a U.S. air-crash expert who spoke on the condition of anonymity because the expert is not directly involved in the investigation. 
 
 All other communication with the plane ended by 1:30 a.m. Saturday. Around that point, the pilot signed off with Malaysian air-traffic controllers with a casual “All right, good night,” according to news reports. Then the transponder signal that the plane was sending to ground-based radar stations went silent. 
 
 View Graphic New twist in the hunt for missing plane 
 
 Other U.S. officials said their information did not reveal what direction the plane flew — or whether it simply circled — during those four hours. That much additional flight time could have put the plane somewhere over the Indian Ocean, far from its Beijing destination, prompting officials to consider whether the search area should be expanded. 
 
 Malaysian authorities said they would not release any information until it had been corroborated and verified. “We have nothing to confirm at this moment,” acting Transport Minister Hishammuddin Hussein told a news conference in Kuala Lumpur Friday. 
 
 Malaysia’s civil aviation chief Azharuddin Abdul Rahman said satellites did not receive any “distress signal” from the plane, but when asked whether it could have sent “pings”, he said: “What the U.S. team are doing, they are trying their best to get whatever sources they can from the satellite system, to come up with possibilities of where the aircraft should be.” 
 
 Malaysian authorities have said they are investigating all passengers and crew aboard, but denied local media reports on Thursday that they searched a home of one of the pilots. 
 
 A modern airplane sends information in a steady stream to its owner, the company that built it or the firm that built its engines. In the final minutes before Air France Flight 477 plunged into the Atlantic almost five years ago, it sent 29 automatic error messages to the airline’s home base in France. 
 
 The Wall Street Journal first reported that U.S. investigators suspect that the engines on the Malaysia Airlines flight kept running for up to four more hours after the plane reached its last known location. The newspaper later corrected its report to say that this belief was based on satellite data that was designed to report on the status of some onboard systems, not signals from monitoring systems embedded in the plane’s Rolls-Royce engines. The Malaysian government denied the initial report. 
 
 In Washington, one senior administration official said the signals came from the Aircraft Communications Addressing and Reporting System (ACARS), with which planes maintain contact with ground stations using radio or satellite signals. The official, who spoke on the condition of anonymity because of the ongoing investigation, said Malaysian authorities shared the flight data with the administration. The fact that the signals did not reveal the plane’s location suggested that it came from the engine. 
 
 As the search for the missing Malaysian jetliner continues, The Post's Joel Achenbach explains several possible scenarios for what could have happened and why this case is puzzling experts. (Gillian Brockell and Kate M. Tobey/The Washington Post) 
 
 On Thursday, Malaysia Airlines CEO Ahmad Jauhari Yahya strongly denied that the ACARS system continued to function after the plane disappeared from civilian radar at 1:30 a.m. Saturday. The last transmission came 26 minutes after its takeoff from Kuala Lumpur, he said. 
 
 “The last transmission was received at 1:07,” Ahmad told reporters. “It said everything is operating normally… As far as the ACARS data, that was the last transmission.” 
 
 Several media reports Friday said that the ACARS system was not sending data, but rather “pings” — the result of trying to establish satellite contact. Reuters reported that these pings were transmitted by MH370 once every hour five or six times. 
 
 Representatives of both Boeing and Rolls-Royce have been in Kuala Lumpur working with the airline, and neither received data after 1:07 a.m., Ahmad said. A Rolls-Royce spokeswoman refused to comment on the reports. 
 
 If the plane continued flying westward, it would have traveled toward the Indian Ocean. In a signal that the United States believed the plane had likely veered off course, the U.S. Navy said Thursday it was shifting one of its ships involved in the hunt, the destroyer USS Kidd, from the Gulf of Thailand to the Malacca Strait on the western side of the Malay Peninsula. 
 
 The U.S. military also announced that it would add a P-8A Poseidon aircraft to the search Friday. The plane will join a Navy P-3C Orion surveillance aircraft already patrolling in the area. 
 
 India’s defense ministry said Friday a third Coast Guard vessel, the CGS Sagar, is en route from Singapore to join a widening search effort already underway in the Andaman Sea near the Malacca Strait. The ship, when it arrives, will join the INS Kumbhir, an amphibious warfare ship, and INS Saryu, a patrol vessel, along with a host of military aircraft (Navy, Coast Guard and Air Force) searching the waters west of Malaysia. 
 
 A senior administration official from the Indian government said Friday that the search team had targeted its efforts in the waters west of Malaysia based on a series of coordinates given to them by the Malaysian government, but he was not sure what data the Malaysians had that lead them to target those specific areas. 
 
 On Friday, the Reuters news agency said that military radar-tracking evidence suggested the plane was deliberately flown across the Malay peninsula towards India’s Andaman Islands. 
 
 Citing sources familiar with the investigation, it reported that the plane was following a route between navigational waypoints — indicating it was being flown by someone with aviation training — when it was last plotted on military radar off the country’s northwest coast. 
 
 Meanwhile, officials on the ground in Port Blair, the capital of the Andaman and Nicobar islands, said they have been in contact with local fishermen in hopes they will report any unusual finds. 
 
 “We have conveyed to the local people and the fishermen-watch groups there that if they see something, they should report. But the places where they are looking for the plane near Malacca Straits, we don’t have heavy habitation, a few sparsely populated islands. But we have alerted communities and officers there to report,” said Sudhir Yadav, senior police officer in Port Blair. 
 
 Burma, also known as Myanmar, said it would open its airspace to planes looking for the missing airliner and was prepared to join the search if asked, the BBC reported. 
 
 In Washington, White House press secretary Jay Carney told reporters that the United States is not in a position to draw any conclusions. He said, “It’s my understanding that based on some new information that’s not necessarily conclusive — but new information — an additional search area may be opened in the Indian Ocean.” 
 
 Search operations in the Indian Ocean, the world’s third-largest ocean with an average depth of nearly 12,800 feet, would present significant challenges. 
 
 The United States is “consulting with international partners about the appropriate assets to deploy,” Carney said. 
 
 The search for Flight MH370 has at times appeared chaotic and baffling — a mix of rumors, confusion and false leads. The government in Kuala Lumpur acknowledged Thursday that it had made little progress in solving the mystery of the vanished plane. 
 
 “We have looked at every lead. In many cases, in fact all the cases, we have not found anything positive,” said Hishammuddin Hussein, Malaysia’s defense minister and acting transport minister. 
 
 “This just might be something we have never seen before,” Steven B. Wallace, a former director of the Federal Aviation Administration’s accident investigation office, said in an interview Thursday. 
 
 Wallace said progress may be hampered because Malaysia lacks an investigative branch like the U.S. National Transportation Safety Board. 
 
 “The pattern here is that the best information is not being immediately presented to the smartest people around who could look at it,” Wallace said. He noted that Malaysian authorities revealed only after several days that their military radar had picked up signs of a plane flying off Malaysia’s western coast after the passenger jet had disappeared much farther east. 
 
 Then, China disclosed four days after the disappearance that its satellites had picked up images of what appeared to be debris in the area where the plane vanished. No signs of wreckage were found there. ||||| KUALA LUMPUR/WASHINGTON A new search area for Malaysia Airlines Flight 370 may be opened in the Indian Ocean, the White House said, significantly broadening the potential location of the plane, which disappeared nearly a week ago with 239 people on board. 
 
 Expanding the search area to the Indian Ocean would be consistent with the theory that the Boeing 777 may have detoured to the west about an hour after take-off from the Malaysian capital Kuala Lumpur en route to Beijing. 
 
 "It's my understanding that based on some new information that's not necessarily conclusive - but new information - an additional search area may be opened in the Indian Ocean," White House spokesman Jay Carney told reporters in Washington. 
 
 Carney did not specify the nature of the new information and Malaysian officials were not immediately available to comment. 
 
 The disappearance of the Malaysia Airlines plane is one of the most baffling mysteries in the history of modern aviation. There has been no trace of the plane nor any sign of wreckage despite a search by the navies and military aircraft of more than a dozen countries across Southeast Asia. 
 
 Satellites picked up faint electronic pulses from the aircraft after it went missing on Saturday, but the signals gave no information about where the jet was heading and little else about its fate, two sources close to the investigation said on Thursday. 
 
 But the "pings" indicated its maintenance troubleshooting systems were switched on and ready to communicate with satellites, showing the aircraft was at least capable of communicating after losing touch with air traffic controllers. 
 
 The system transmits such pings about once an hour, according to the sources, who said five or six were heard. However, the pings alone are not proof that the plane was in the air or on the ground, the sources said. 
 
 Malaysian authorities have said the last civilian contact occurred as the Boeing 777-200ER flew north into the Gulf of Thailand. They said military radar sightings indicated it may have turned sharply to the west and crossed the Malay Peninsula toward the Andaman Sea. 
 
 The new information about signals heard by satellites shed little light on the mystery of what happened to the plane, whether it was a technical failure, a hijacking or another kind of incident on board. 
 
 While the troubleshooting systems were functioning, no data links were opened, the sources said, because the companies involved had not subscribed to that level of service from the satellite operator, the sources said. 
 
 Boeing and Rolls-Royce, which supplied its Trent engines, declined to comment. 
 
 Earlier Malaysian officials denied reports that the aircraft had continued to send technical data and said there was no evidence that it flew for hours after losing contact with air traffic controllers early last Saturday. 
 
 "It's extraordinary that with all the technology that we've got that an aircraft can disappear like this," Tony Tyler, the head of the International Air Transport Association that links over 90 percent of the world's airlines, told reporters in London. 
 
 MILITARY DEPLOYMENT GROWS 
 
 Ships and aircraft are now combing a vast area that had already been widened to cover both sides of the Malay Peninsula and the Andaman Sea. 
 
 The U.S. Navy was sending an advanced P-8A Poseidon plane to help search the Strait of Malacca, separating the Malay Peninsula from the Indonesian island of Sumatra. It had already deployed a Navy P-3 Orion aircraft to those waters. 
 
 U.S. defense officials told Reuters that the U.S. Navy guided-missile destroyer, USS Kidd, was heading to the Strait of Malacca, answering a request from the Malaysian government. The Kidd had been searching the areas south of the Gulf of Thailand, along with the destroyer USS Pinckney. 
 
 India's Defence Ministry has ordered the deployment of ships, aircraft and helicopters from the remote Andaman and Nicobar Islands, at the juncture of the Bay of Bengal and the Andaman Sea. An Indian P8I Poseidon surveillance plane was sent to the Andaman islands on Thursday. 
 
 China, which had more than 150 citizens on board the missing plane, has deployed four warships, four coastguard vessels, eight aircraft and trained 10 satellites on a wide search area. Chinese media have described the ship deployment as the largest Chinese rescue fleet ever assembled. 
 
 WRONG IMAGES 
 
 On the sixth day of the search, planes scanned an area of sea where Chinese satellite images had shown what could be debris but found no sign of the airliner. 
 
 Malaysian Transport Minister Hishammuddin Hussein told a news conference the images were provided accidentally, saying the Chinese government neither authorized nor endorsed putting them on a website. "The image is not confirmed to be connected to the plane," he said. 
 
 It was the latest in a series of contradictory reports, adding to the confusion and agony of the relatives of the passengers. 
 
 As frustration mounted over the failure to find any trace of the plane, China heaped pressure on Malaysia to improve coordination in the search. 
 
 Premier Li Keqiang, speaking at a news conference in Beijing, demanded that the "relevant party" step up coordination while China's civil aviation chief said he wanted a "smoother" flow of information from Malaysia, which has come under heavy criticism for its handling of the disaster. 
 
 Malaysian police have said they were investigating whether any passengers or crew on the plane had personal or psychological problems that might shed light on the mystery, along with the possibility of a hijacking, sabotage or mechanical failure. 
 
 The Boeing 777 has one of the best safety records of any commercial aircraft in service. Its only previous fatal crash came on July 6 last year when Asiana Airlines Flight 214 struck a seawall with its undercarriage on landing in San Francisco, killing three people. 
 
 (Additional reporting by Niluksi Koswanage, Siva Govindasamy, Yantoultra Ngui and Al Zaquan Amer Hamzah in Kuala Lumpur, Ben Blanchard in Beijing, Tim Hepher in Paris and Andrea Shalal, Will Dunham, Phil Stewart and Roberta Rampton in Washington.; Writing by David Storey and Dean Yates; Editing by Frank McGurty)
– The disappearance of another jet in Southeast Asia while the fate of Malaysia Airlines Flight 370 remains a mystery comes as a shock to the aviation world, but experts stress that the two cases are very different. The New York Times runs through some of the differences with AirAsia Flight 8501: Unlike with Flight 370, there has been no sign that anybody on Flight 8501 intentionally disabled any onboard systems, meaning that investigators should have the normal automatic transmissions from the flight to help the search. Flight 370 disappeared on a clear night, while Flight 8501 was believed to have encountered stormy weather, with weather agencies having reported lightning strikes along its route. The AirAsia pilot's last communication with air traffic control was a request "to avoid clouds by turning left and going higher to 38,000 feet." Flight 370's pilot was very experienced, with more than 18,000 hours of flying time, while the combined experience of Flight 8501's pilot and co-pilot is believed to be less than half that. Neither Flight 370 nor Flight 8501 issued an emergency distress call, but, as the AP notes, "pilots are trained to focus first on the emergency at hand and then communicate only when free," and there's no sign that the AirAsia flight diverted sharply from its intended course the way the Malaysia Airlines flight did. Another major difference is the search area for Flight 8501, which is much smaller and shallower than the vast area that has been searched for Flight 370. "We are not talking about the deep Indian Ocean here," says CNN aviation correspondent Richard Quest. "We are talking about congested airspace around Southeast Asia. There will be much better radar coverage. There's certainly better air traffic control coverage."