A321
Maintenance Airframe; Maintenance Powerplant
Training / Qualification; Confusion
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural Maintenance
General Maintenance Action
Procedure; Human Factors; Incorrect / Not Installed / Unavailable Part; Logbook Entry
Aircraft X came to ZZZ with a Pilot Discrepancy for Engine 1 EPR Mode Fault. Found short P/T2 probe installed on Engine 1 nose cowl. This part is incorrect for A321. Engine 1 P2/T2 probe was replaced in ZZZ1 by contract Employee. Discrepancy was corrected by [company] mechanics in the ZZZ hangar. I was not involved with the repair; but was made aware of the event.Event occurred in ZZZ1 by contract maintenance. It was discovered that the incorrect probe was installed when Aircraft X arrived in ZZZ. Task Card 'Remove-Install Nose Cowl' explains the different probe effectivities. The reference material is very hard to follow to understand effectivity. There needs to be a more direct way to verify effectivity on engines.
Technician reported aircraft released for service with wrong part installed.