Narrative:

Installed incorrect life vest part numbers to flight attendant and captain's location. This occurred at ZZZ airport while doing line maintenance. Event involved mechanic and lead mechanic. After some investigation; it was determined by lead mechanic and myself that the wrong captain's and flight attendant's life vest were installed. Once the event had been idented the aircraft was immediately held from further flight until the correct life vest could be installed to the captain's and flight attendant's locations. After which the aircraft was returned to service with no delays or cancellations from maintenance. Was provided wrong life vest from parts department initially; and this was not noticed by my lead. All believed life vest to be correct part number.

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Original NASA ASRS Text

Title: A MECHANIC DESCRIBES HOW HE AND HIS LEAD INADVERTENTLY INSTALLED AN INCORRECT CAPTAIN'S AND FLIGHT ATTENDANT LIFE VESTS ON A EMB-145LR ACFT. CORRECT LIFE VESTS WERE LATER INSTALLED.

Narrative: INSTALLED INCORRECT LIFE VEST PART NUMBERS TO FLT ATTENDANT AND CAPT'S LOCATION. THIS OCCURRED AT ZZZ ARPT WHILE DOING LINE MAINT. EVENT INVOLVED MECH AND LEAD MECH. AFTER SOME INVESTIGATION; IT WAS DETERMINED BY LEAD MECH AND MYSELF THAT THE WRONG CAPT'S AND FLT ATTENDANT'S LIFE VEST WERE INSTALLED. ONCE THE EVENT HAD BEEN IDENTED THE ACFT WAS IMMEDIATELY HELD FROM FURTHER FLT UNTIL THE CORRECT LIFE VEST COULD BE INSTALLED TO THE CAPT'S AND FLT ATTENDANT'S LOCATIONS. AFTER WHICH THE ACFT WAS RETURNED TO SVC WITH NO DELAYS OR CANCELLATIONS FROM MAINT. WAS PROVIDED WRONG LIFE VEST FROM PARTS DEPT INITIALLY; AND THIS WAS NOT NOTICED BY MY LEAD. ALL BELIEVED LIFE VEST TO BE CORRECT PART NUMBER.

Data retrieved from NASA's ASRS site as of May 2009 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.