Flight Crew Last 90 Days 25; Flight Crew Total 16000; Flight Crew Type 4000
Deviation / Discrepancy - Procedural FAR; Deviation / Discrepancy - Procedural Published Material / Policy; Ground Event / Encounter Other / Unknown
Flight Crew Took Evasive Action
Human Factors; Weather
We deiced and taxied to the runway for departure. We were advised by an offline pilot (via the purser) that there was snow on the left wing. I went to the cabin to do a wing check and found snow to be adhering to the inboard flap and wing. I advised the Captain and we concluded a return for additional deicing was necessary. As a courtesy (while waiting for taxi instructions) I called de-ice and advised them we would need to be deiced again due to snow on the left wing. The de-ice Coordinator told me we would be OK to go because the snow on the wing will shear off because of the Type IV fluid ahead of it on the wing. I advised him we determined it necessary to de-ice again. To make sure FAR 121.629 is complied with; FOM states 'If any frozen contaminants are trailing edge of the wing.'  I can only conclude that this step was omitted.  I am concerned that the de-ice personnel are either unaware of the de-ice requirements in the FOM or they are disregarding them.  I would like to add that I feel removing the required wing inspection and replacing it with the nose check is a mistake.  'Adhering to the aircraft; the aircraft MUST return for additional deicing.' FOM also states 'After de icing; the critical aircraft surfaces are checked by qualified personnel to ensure they are free of contaminants.' Since no more than 10 minutes had elapsed from de-icing to being alerted to snow on the wing and the fact that I found no evidence of de-ice fluid on the wing I can only conclude that the clean surface check was not accomplished properly. I am concerned that our de-ice personnel are either unaware of the requirements in our FOM or are disregarding them. I also feel like replacing the required wing inspection with the 'nose check' is a mistake.
B757 First Officer reports being informed by the Purser that a deadheading pilot has noticed ice on the wing after de-icing has been completed. The flight returns to the de-ice pad where the crew does not believe that more de-icing is necessary.