Technician reported ordering the wrong part for installation on an A321 aircraft.

Attributes
ACN	1698762
Time
Date	201910
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Make Model Name	A321
Operating Under FAR Part	Part 121
Flight Phase	Parked
Flight Plan	IFR
Component
Aircraft Component	RPM/N1/N2/Etc Indication
Person 1
Function	Technician
Qualification	Maintenance Airframe Maintenance Powerplant
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Maintenance Deviation - Procedural Published Material / Policy

Narrative:

Aircraft diverted into ZZZ with EPR mode fault. System showed engine 1 EPR mode fault with fault messages of P2 T2 sens/hc/EEC1. Tsm 73-xx-xx-XXX-XXX showed a P2 T2 sensor and a relay box as possible faulty line replaceable unit. I looked up the part numbers for the sensor and relay box and gave those to our aog people to see if they could find the parts in ZZZ. I think I wrote down the wrong part number for the sensor.

Original NASA ASRS Text

Title: Technician reported ordering the wrong part for installation on an A321 aircraft.

Narrative: Aircraft diverted into ZZZ with EPR mode fault. System showed engine 1 EPR mode fault with fault messages of P2 T2 SENS/HC/EEC1. TSM 73-XX-XX-XXX-XXX showed a P2 T2 sensor and a relay box as possible faulty Line Replaceable Unit. I looked up the part numbers for the sensor and relay box and gave those to our AOG people to see if they could find the parts in ZZZ. I think I wrote down the wrong part number for the sensor.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.