A320
Maintenance Airframe; Maintenance Powerplant
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Maintenance; Deviation / Discrepancy - Procedural Published Material / Policy
General Maintenance Action
Human Factors
The mechanic who was assigned to work Aircraft X by chance found that the hydraulic reservoirs and accumulators for the green and yellow systems still had danger tags stating 'do not pressurize hydraulics' still hanging from them. These tags were dated XX/Sep/2020 and were from another company.
Technician reported finding DANGER; Do Not Operate; tags still installed on hydraulic components on an in service aircraft.