AP Photo/Vincent Thian
It appears that someone deliberately shut down the Aircraft Communications Addressing and Reporting System on the missing Malaysia Airlines flight before the pilot's last words over radio, Malaysia's Transport Minister Hishamuddin Hussein said Sunday.
"We have to hand you over to Ho Chi Minh city," Air Traffic Control told the pilot.
"All right, good night," the pilot said back.
Other news from the latest press conference on the flight that has been missing for more than a week was that the plane had not been loaded with any extra fuel and that the pilot and co-pilot did not ask to fly together, according to Channel News Asia's Sumisha Naidu.
Malaysia's investigation has shifted to a criminal inquiry following the country's announcement on Friday that attempts to turn off communications equipment and divert the aircraft were "deliberate action by someone on the plane."
On Saturday, police officers were seen entering the home of pilot Zaharie Ahmad Shah, which was reportedly searched, according to The New York Times. The co-pilot's home was also visited, according to CNN.
The police are also reportedly examining a flight simulator the pilot kept at home.
As a number of commercial pilots told NPR's "All Things Considered" on Friday, with the exception of the transponder, which can be shut off at the flick of a switch, other onboard tracking systems are not as easy to disable - leading investigators to believe whoever turned off tracking systems had intimate knowledge of them.
The captain and first officer of the plane were both experienced pilots. Capt. Shah, 53, began with the airline in 1981 and had logged 18,365 flying hours, while First Officer Fariq Ab. Hamid, 27, joined in 2007 and had 2,763 hours logged.
The Times has more:
The authorities may also be looking at an aviation engineer who was among the passengers. The New Straits Times, a newspaper published in Malaysia, interviewed a man who said that his son, an aircraft engineer, had been on the flight en route to China to work on Malaysia Airlines planes. The son, Mohd Khairul Amri Selamat, was identified on the passenger manifest as a 29-year-old Malaysian. A company spokeswoman said early Sunday that the passenger was an employee of a private-jet firm, not Malaysia Airlines.
Over the past two days, the focus of the investigation has morphed from a belief the plane may have suffered a catastrophic failure to the possibility it had been hijacked by passengers or members of the crew. The reasoning, officials noted, came down to the shut down of onboard tracking systems and deliberate redirection of the plane away from its Beijing-bound flight path.
"An aircraft which was believed but not confirmed to be MH370 did indeed turn back," Malaysian Prime Minister Najib Razak said in a press conference on Friday. "It then flew in a westerly direction back over Peninsular Malaysia before turning northwest. Up until the point at which it left military primary radar coverage, these movements are consistent with deliberate action by someone on the plane."
The move to investigate the flight crew more thoroughly does not mean they have been declared suspects, The Times notes. But it does at least give officials something more solid to look into at a time when the search-and-rescue has turned up few signs of the aircraft's location.
The search effort greatly expanded Friday, as the Malaysian P.M. introduced two massive new search "corridors" - a northern corridor stretching from northern Thailand to the border of Kazakhstan and Turkmenistan, and a southern corridor stretching from Indonesia to the southern Indian Ocean.
"Clearly the search for MH370 has entered a new phase," Razak said Friday. "We hope this new information brings us one step closer to finding the plane."