Passengers using San Francisco International airport face a third day of delays and cancellations following the crash landing of Asiana Airlines Flight 214.
In the aftermath of Saturday’s accident, in which two people were killed, all runways at San Francisco were closed and all flights grounded for several hours.
This resulted in the cancellation of almost 450 flights that day. On Sunday, a further 275 flights were cancelled and another 370 delayed.
All major airlines have announced that passengers due to fly to, from or through SFO can change their flights at no cost.
The airport had reopened three runways by 16.00 local time on Sunday, allowing it to “increase our arrival rate to 30 or more aircraft per hour”.
Only one runway remains closed and will continue to be so "for the immediate future".
Asiana Airlines Flight 214, a Boeing 777 with 307 people on board, is thought to have clipped the sea wall at the end of the runway as it was coming in to land, causing the loss of its tail section and fire to engulf the fuselage.
Officials said the plane was travelling "significantly below" its target landing speed of 137 knots (157 miles) per hour and that the pilots tried to abort the landing moments before impact.
Two teenage Chinese girls were killed - believed to be the first fatalities in a B777 crash - with another 48 people being treated in hospitals in the San Francisco area.
The airline said in a statement: "Asiana Airlines deeply regrets this accident and is dedicating great efforts to support and ensure a swift and thorough investigation."
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