Airbus started carrying out braking tests of the A350-900 prototype at Toulouse on 9 June, as it continued progress towards the first flight of aircraft MSN1.
The aircraft performed braking manoeuvres at various speeds on the runway at Blagnac.
But a source familiar with the A350 test regime says the high-speed rejected take-off test has not yet taken place.
Airbus has not commented on when the first flight of the A350 might take place.
But the source indicates that a first flight is unlikely before 13 June.