Flight Crew Last 90 Days 80; Flight Crew Total 5000; Flight Crew Type 200
Other / Unknown
Deviation / Discrepancy - Procedural Published Material / Policy
General None Reported / Taken
Human Factors
On this date I was the IRO of this flight.  I have been made aware that QRH's were for the wrong engine type.  My duties did not include preflighting the QRH's.  I do not know flight publications procedures for updating and placing publications in the aircraft.  I would recommend a review of the their procedures.  The flight was in no danger due to there being three kits on the aircraft which had AOM's; which include proper procedures for each engine type.  None of the crew had ever heard of this happening before. I believe that this may have led to complacency in checking the QRH.  I recommend different color covers to help distinguish the QRH and more vigilance by crews.
Air carrier First Officer is informed after the fact that he operated a flight with QRH's specific to an aircraft with a different engine type.