What was found
FLIGHT 7846 - YYZ-IAD - AT FL260, FLIGHT CREW NOTICED A -POPPING- SOUND FROM F/O'S WINDOW AND -HISSING- SOUND. EICAS INDICATED QUICKLY RISING CABIN ALTITUDE. BOTH CREW MEMBERS DONNED OXYGEN MASKS AND EXECUTED CABIN DEPRESSURIZATION AND EMERGENCY DESCENT MEMORY ITEMS AND CHECKLISTS. DECLARED AN EMERGENCY WITH ATC TO ENSURE SAFE SEPARATION WITH TRAFFIC AND MEA VERIFICATION. CABIN ALTITUDE NEVER EXCEEDED 10,000 FEET ALTITUDE. AT LEVEL OFF, ALL SYSTEMS OPERATED NORMALLY. LANDED AT IAD WITH NO FURTHER INCIDENT. MAINTENANCE FOUND LARGE SECTION OF SPEED TAPE OVER F/O'S WINDSHIELD LIFTED INTO AIR STREAM. CHECKED TORQUE OF WINDSHIELD SCREWS AND FOUND TO BE OK. REAPPLIED SPEED TAPE IAW EMB 145 MM. PERFORMED OPS