On Mar 11th 2014 the airline reported that the aircraft had accumulated 53,465 flight hours in 7,525 flight cycles since its delivery to Malaysia Airlines in 2002. The aircraft has last undergone maintenance on Feb 23rd 2014. All Malaysia Airlines aircraft are equipped with ACARS transmitting monitoring data automatically. However, no distress call and no information was relayed. The search area has been extended and includes the Strait of Malacca west of Malaysia looking at the possibility that the aircraft may have turned back and diverted to Subang (Malaysia).

[On Mar 10th 2014 Hong Kong's Civil Aviation Department confirmed a Cathay Pacific flight from Hong Kong to Kuala Lumpur spotted large amount of debris while enroute off the coast of South East Vietnam.]

Vietnam's Search and Rescue Center later announced that the border guard vessel arriving at the position of the debris field did not find any objects. There were high winds and large waves, the debris possibly drifted away.

On Mar 11th 2014 Malaysia's Air Force reported their primary radar data suggest, the aircraft may have turned west over the Gulf of Thailand at about 1000 meters/3000 feet below the original flight level (editorial note: another possible interpretation could be: at 1000 meters of height compared to 10000 meters original level) and flown past the east coast near Khota Baru and the west coast of Malaysia near Kedah, the radar return was last seen at 02:40L near Pulau Perak in the Straits of Malacca, about 285nm westsouthwest of the last known (secondary) radar position. Local Police at Khota Bharu confirmed a number of locals reported lights and a low flying aircraft at Khota Bharu at an estimated height of 1000 meters/3000 feet.

In the evening of Mar 11th 2014 Vietnam's Search and Rescue Center reported they were expanding their search areas both to the east and west including the South China Sea and Gulf of Thailand. Two Chinese search planes in addition to the Vietnamese ships and aircraft have been operating over Vietnamese waters, so far there has not been any finding. The oil slicks and debris found in the Gulf of Thailand south of Tho Chau Island proved unrelated to MH-370, the field of debris of Mar 10th was determined false alert too.

On Mar 11th 2014 Malay investigators reported a 19 year old Iranian was travelling on one of the false passports to join his family waiting for him in Germany. They were contacted by his mother admitting she knew her son was using a false passport. In the evening Malay investigators summarized that there is no evidence suggesting there is a link between the disappearance of the aircraft and the use of false passports. Investigation continues however, the background of all passengers is being investigated, for example whether there are high life insurances.