Updated to note the FAA also lifted a ban on foreign carriers landing side by side at San Francisco.
The US Federal Aviation Administration (FAA) has lifted restrictions prohibiting foreign carriers from making visual approaches at San Francisco International airport.
The restrictions to runways 28 left and right were put in place following the crash of Asiana Airlines flight 214 at the airport on 6 July and a series of missed approaches by foreign carriers since 1 June, including a low approach by an Eva Air Boeing 777 on 23 July.
The ban was lifted because a glideslope indicator at the airport was returned to service, giving pilots an additional reference during landing, says the agency.
The FAA took the glidescope out of service on 1 June while the agency relocated components of the instrument landing system as part of work on the thresholds at the far end of the runways, says the FAA.
During the project, the runway localiser was active, but not the glideslope.
The FAA also lifted a restriction prohibiting foreign carriers from landing side by side at the same time on parallel runways. That restriction was also put in place following the Asiana crash.
The cause of the Asiana 777 crash, which killed three passengers, remains under investigation by the National Transportation Safety Board.
However, the board has said the aircraft's speed was too low and that the aircraft did not maintain the proper glidepath before it slammed into a seawall at the edge of the runway.