Here is a letter dated March 12 from Mike McKay, a New Zealander working on an oil rig near Vietnam:
McKay's email also said:
"From when I first saw the burning plane until the flames went out (still at a high altitude), was 10-15 seconds. There was no lateral movement. So it was either coming toward our location, stationary (falling), or going away from our location."
McKay expressed some doubts in his letter about what he saw:
"I believe I saw the Malaysian Airlines plane come down...."
"I observed (the plane?) burning at high altitude...."
"While I observed the burning (plane) it appeared to be in ONE piece."
A New Zealand article reports:
Doan Huu Gia, deputy general director of Vietnam's air traffic management, told BBC: "We received an email from a New Zealander who works on one of the oil rigs off Vung Tau. "He said he spotted a burning [object] at that location, some 300 km southeast of Vung Tau." Woodruff reports that Vietnamese officials say they found nothing at the site. http://tvnz.co.nz/...
For picture of the oil rig, maps, and more details from the worker's letter, see:
http://www.malaysia-chronicle.com/...
Other links to the story:
http://www.businessinsider.com/...
http://intellihub.com/...
http://mashable.com/...
See also this diary published at 2:12 pm (h/t commenter lgmcp): Breaking News: On Flight 370-China Releases Satellite Images that may show Crash Site