A CL-600 (CRJ-700) ACFT LH GEAR DOOR WAS REPLACED WITH AN INCORRECT DOOR.

Narrative

THERE WAS LACK OF COM ALL AROUND HERE. I WAS NOT NOTIFIED BY EITHER MY BOSS OR MAINT THAT WE HAD A SPECIAL DOOR HERE FOR ACFT X SO THE COM BTWN DEPTS WAS NOT THERE. TECHNICIAN CAME INTO THE PARTS ROOM AND REQUESTED A L-HAND GEAR DOOR. I TOOK TECHNICIAN OUT IN THE HANGAR WHERE OUR GEAR DOORS ARE KEPT AND HANDED HIM A GEAR DOOR. TECHNICIAN SAID THAT HE DID NOT UNDERSTAND WHY WE ARE CHANGING OUT A GEAR DOOR FOR ANOTHER GEAR DOOR THAT LOOKED THE SAME. I GAVE TECHNICIAN THE GEAR DOOR. WHEN TECHNICIAN QUESTIONED OUR INSPECTION; HE SAID THAT THIS WAS THE RIGHT GEAR DOOR AND TO GO AHEAD AND HANG IT; SO THAT WAS THE END OF THE CONVERSATION. AT XA45 THE SUPVR ON DUTY HAD CAME UP TO ME AND LET ME KNOW THAT THE GEAR DOOR THAT I HANDED OUT WAS THE WRONG ONE; THAT THEY NEEDED A DIFFERENT PART NUMBER. I WAS NOT AWARE BEFORE THEN THAT THERE WAS A SPECIFIC DOOR THAT NEEDED TO GO ON THAT ACFT. I AM NOT AWARE OF HOW THEY JUST THEN NOTICED. THE ACFT RETURNED TO THE HANGAR AND THE OTHER GEAR DOOR WAS PUT ON.