Narrative:

Upon leaving holding at ock; egll approach issued a heading and said 'runway 27R.' two controllers later; we were given a heading to intercept runway 27R localizer. When we flew through runway 27L localizer; the controller gave us a corrective heading to intercept runway 27L. We were told that we should have been on runway 27R. We told him that the final controller issued us a heading to intercept runway 27R. The controller said nothing and re-cleared us to runway 27L. No traffic in the area. No incident.

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Original NASA ASRS Text

Title: B777 FLT CREW RPTS MISUNDERSTANDING WITH EGLL TRACON CONCERNING THEIR ASSIGNED RWY. CREW BELIEVED THEY WERE CLRED FOR RWY 27R AND THE CTLR BELIEVED RWY 27L.

Narrative: UPON LEAVING HOLDING AT OCK; EGLL APPROACH ISSUED A HEADING AND SAID 'RWY 27R.' TWO CONTROLLERS LATER; WE WERE GIVEN A HEADING TO INTERCEPT RWY 27R LOCALIZER. WHEN WE FLEW THROUGH RWY 27L LOC; THE CONTROLLER GAVE US A CORRECTIVE HEADING TO INTERCEPT RWY 27L. WE WERE TOLD THAT WE SHOULD HAVE BEEN ON RWY 27R. WE TOLD HIM THAT THE FINAL CONTROLLER ISSUED US A HEADING TO INTERCEPT RWY 27R. THE CONTROLLER SAID NOTHING AND RE-CLEARED US TO RWY 27L. NO TRAFFIC IN THE AREA. NO INCIDENT.

Data retrieved from NASA's ASRS site as of January 2009 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.