ACFT DAMAGED DURING RAMP OP RAMP DEP PROC; JET BLAST ENCOUNTER.

Narrative

WE WERE STARTING A LONG HAUL INTL FLT BACK TO HOME BASE. DUE TO THE NATURE AND LENGTH OF THIS FLT A DOUBLE CREW WAS ASSIGNED AND CREW REST AREA AVAILABLE ON THE ACFT. MY POS WAS THAT OF ONE OF THE CAPT'S ASSIGNED (WE CARRIED 2 CAPTS; 2 FO'S FOR THIS FLT). I WAS ALSO 'TRIP CAPT;' I.E.; I WAS IN CHARGE OF DECIDING ROUTING; ARRANGING OVERFLT; LNDG PERMITS; HANDLING; ETC FOR THE FLT AND THUS; MY NAME APPEARED ON ALL CORRESPONDENCE; FLT PLANS; ETC; FROM BASE OP. ON THE LEG OF THE TAXI INCIDENT; I WAS IN THE CREW REST AREA AND ANOTHER CREW WAS IN COMMAND OF THE ACFT. BRIEFLY; AFTER WE HAD CLOSED OUR DOOR PRIOR TO DEP; ANOTHER ACFT WAS MARSHALLED TO PARK BEHIND US IN A TAIL TO TAIL POS. AFTER RECEIVING ENG START CLRNC FROM GND CTL; THE CREW AT THE CTLS STARTED ENGS AND TAXIED OUT FOR DEP. ON OUR ARR BACK IN THE USA; AT HOME BASE; WE WERE ADVISED THAT THE OPERATOR OF THE OTHER ACFT HAD FILED AN INCIDENT/ACCIDENT RPT WITH THE ARPT REF 'JET BLAST DAMAGE' TO HIS RUDDER. OUR CREW WAS NOT AWARE OF ANY PROBLEM AND WAS NOT AWARE THAT A 'LIGHT' ACFT HAD BEEN PARKED BEHIND THEM PRIOR TO THEIR ENG START. MY REASON FOR RPTING THIS IS THAT MY NAME IS SHOWN ON THE FLT PLAN AS PIC; ALTHOUGH I WAS NOT ON DUTY IN THE COCKPIT FOR THAT LEG. I AM ALSO NAMED IN THE OTHER OPERATOR'S INCIDENT RPT. I'M A LITTLE UNSURE OF THE INTERP OF MY POS IN THE CREW STRUCTURE REF AN INCIDENT.