Narrative:

Aircraft configured for deicing at XA13; and final deicing step initiated at XA31. Aircraft deiced with type 1 to remove surface ice; followed by type 4 fluid. Light freezing rain falling at airport; and aircraft was covered with ice from inbound flight. At XA51; the deicer called via interphone with deice information. During pushback; flight attendant calls cockpit to report the passenger are concerned about 'ice on the wing.' after pushback; we receive another call from flight attendant indicating she sees ice on the wing. Because our holdover window was fairly short; we initiate taxi toward runway 1R. Prior to leaving the ramp; I ask the relief pilot to examine the wings because there was no sense going to the end of the runway if; in fact; there was ice on the wing. First officer returned to the cockpit and reported that the right wing was clean; but that the left wing had ice adhering to the leading edge. We return to the gate for deicing; and this time it was performed properly.

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Original NASA ASRS Text

Title: PAX AND CABIN ATTENDANTS ADVISE FLT CREW OF B767-300 THAT DEICING FAILED TO REMOVE ALL ICE FROM THE LEFT WING.

Narrative: ACFT CONFIGURED FOR DEICING AT XA13; AND FINAL DEICING STEP INITIATED AT XA31. ACFT DEICED WITH TYPE 1 TO REMOVE SURFACE ICE; FOLLOWED BY TYPE 4 FLUID. LIGHT FREEZING RAIN FALLING AT ARPT; AND ACFT WAS COVERED WITH ICE FROM INBOUND FLT. AT XA51; THE DEICER CALLED VIA INTERPHONE WITH DEICE INFO. DURING PUSHBACK; FLT ATTENDANT CALLS COCKPIT TO RPT THE PAX ARE CONCERNED ABOUT 'ICE ON THE WING.' AFTER PUSHBACK; WE RECEIVE ANOTHER CALL FROM FLT ATTENDANT INDICATING SHE SEES ICE ON THE WING. BECAUSE OUR HOLDOVER WINDOW WAS FAIRLY SHORT; WE INITIATE TAXI TOWARD RWY 1R. PRIOR TO LEAVING THE RAMP; I ASK THE RELIEF PLT TO EXAMINE THE WINGS BECAUSE THERE WAS NO SENSE GOING TO THE END OF THE RWY IF; IN FACT; THERE WAS ICE ON THE WING. FO RETURNED TO THE COCKPIT AND RPTED THAT THE R WING WAS CLEAN; BUT THAT THE L WING HAD ICE ADHERING TO THE LEADING EDGE. WE RETURN TO THE GATE FOR DEICING; AND THIS TIME IT WAS PERFORMED PROPERLY.

Data retrieved from NASA's ASRS site as of May 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.