Mechanic installs oxygen regulator. It is wrong part, ordered by dayshift mechanic.

Attributes
ACN	262963
Time
Date	199402
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : ewr
State Reference	NJ
Altitude	agl bound lower : 0 agl bound upper : 0
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 121
Person 1
Affiliation	company : air carrier
Function	other personnel other
Qualification	other other : other
ASRS Report	262963
Person 2
Affiliation	company : air carrier
Function	other personnel other
Qualification	other other : other
Events
Anomaly	non adherence : far other anomaly other
Independent Detector	other other : unspecified
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Air Traffic Incident	other

Narrative:

I'm currently an aircraft mechanic with air carrier in ewr. I recently was dispatched at XY00 to assist dayshift mechanics in the replacement of a captain oxygen demand regulator on an aircraft which was in delay. I arrived and the aircraft regulator, part number 28000.17, was already removed. The mechanic was awaiting the new regulator, which had already been ordered by dayshift. Shift change was at XY30, so they turned the new part over to me. I installed the part, performed the system test per maintenance manual 35-11-41 and signed off the logbook. I was contacted that same night with a possible problem from the installation. I researched the part I installed and found the part was the wrong effectivity. The part was ordered by dayshift but I installed the part and signed the logbook. Both the part dayshift removed and the part I installed were the wrong effectivity for this aircraft, and no one knew this at the time of installation. I thought the part had been researched by dayshift. In short, any jobs I'm assigned to when replacing parts will have to be verified to avoid any future mishaps.

Original NASA ASRS Text

Title: MECH INSTALLS OXYGEN REGULATOR. IT IS WRONG PART, ORDERED BY DAYSHIFT MECH.

Narrative: I'M CURRENTLY AN ACFT MECH WITH ACR IN EWR. I RECENTLY WAS DISPATCHED AT XY00 TO ASSIST DAYSHIFT MECHS IN THE REPLACEMENT OF A CAPT OXYGEN DEMAND REGULATOR ON AN ACFT WHICH WAS IN DELAY. I ARRIVED AND THE ACFT REGULATOR, PART NUMBER 28000.17, WAS ALREADY REMOVED. THE MECH WAS AWAITING THE NEW REGULATOR, WHICH HAD ALREADY BEEN ORDERED BY DAYSHIFT. SHIFT CHANGE WAS AT XY30, SO THEY TURNED THE NEW PART OVER TO ME. I INSTALLED THE PART, PERFORMED THE SYS TEST PER MAINT MANUAL 35-11-41 AND SIGNED OFF THE LOGBOOK. I WAS CONTACTED THAT SAME NIGHT WITH A POSSIBLE PROB FROM THE INSTALLATION. I RESEARCHED THE PART I INSTALLED AND FOUND THE PART WAS THE WRONG EFFECTIVITY. THE PART WAS ORDERED BY DAYSHIFT BUT I INSTALLED THE PART AND SIGNED THE LOGBOOK. BOTH THE PART DAYSHIFT REMOVED AND THE PART I INSTALLED WERE THE WRONG EFFECTIVITY FOR THIS ACFT, AND NO ONE KNEW THIS AT THE TIME OF INSTALLATION. I THOUGHT THE PART HAD BEEN RESEARCHED BY DAYSHIFT. IN SHORT, ANY JOBS I'M ASSIGNED TO WHEN REPLACING PARTS WILL HAVE TO BE VERIFIED TO AVOID ANY FUTURE MISHAPS.

Data retrieved from NASA's ASRS site as of July 2007 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.