A B757-200 first officer's seat lumbar support was deferred per the MEL. Technician entered wrong pa...

Attributes
ACN	670324
Time
Date	200508
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Person 1
Affiliation	company : air carrier
Function	maintenance : technician
ASRS Report	670324
Person 2
Affiliation	company : air carrier
Function	maintenance : technician
ASRS Report	670327
Events
Anomaly	aircraft equipment problem : critical maintenance problem : non compliance with mel non adherence : far non adherence : published procedure
Independent Detector	other other : 4
Resolutory Action	none taken : detected after the fact
Consequence	other other
Factors
Maintenance	contributing factor : schedule pressure contributing factor : manuals performance deficiency : non compliance with legal requirements performance deficiency : logbook entry performance deficiency : installation
Supplementary
Problem Areas	Aircraft Chart Or Publication Maintenance Human Performance
Primary Problem	Maintenance Human Performance

Narrative:

On aug/fri/05; I issued an MEL placard for aircraft X; first officer seat lumbar support per MEL 25-23C. I issued a maintenance action along with a part number that was incorrect. The correct part number for the first officer seat assembly was XXX-XXXX. I entered XXX-XXXY into the parts line. The XXX-XXXY is the captain's seat and the XXX-XXXX is the first officer seat assembly. I looked at the first officer part number and typed in the captain's seat part number by mistake. Requested to work any other shift as I cannot sleep while working this shift. Doctor's visits and prescription drugs are no help. Other than that; just try to be more diligent and doublechk everything. Incorrect part number entered into maintenance report. With no sleep for 2 or 3 days; mistakes are easy to make; hard to catch. Supplemental information from acn 670327: I was assigned to clear an MEL by replacing a first officer's seat assy; due to inoperative lumbar adjustment. My lead handed me the printout; and told me he ordered the seat and had it delivered to the aircraft. I installed the new seat per the MM; and cleared the MEL. After 5 legs (no service interruptions); a tech noticed the seat was incorrect; that it was a captain's seat. He made a discrepancy in the log and took action by installing the proper seat. Due to an incorrect part number in the work order; and my failure to verify the part number; I mistakenly installed the wrong seat assy. Safety of the crew member was not compromised since the seat was fully functional.

Original NASA ASRS Text

Title: A B757-200 FO'S SEAT LUMBAR SUPPORT WAS DEFERRED PER THE MEL. TECHNICIAN ENTERED WRONG PART NUMBER FOR SEAT. SEAT WAS REPLACED AT ANOTHER STATION WITH WRONG SEAT USING DEFERRED ITEM PART NUMBER.

Narrative: ON AUG/FRI/05; I ISSUED AN MEL PLACARD FOR ACFT X; FO SEAT LUMBAR SUPPORT PER MEL 25-23C. I ISSUED A MAINT ACTION ALONG WITH A PART NUMBER THAT WAS INCORRECT. THE CORRECT PART NUMBER FOR THE FO SEAT ASSEMBLY WAS XXX-XXXX. I ENTERED XXX-XXXY INTO THE PARTS LINE. THE XXX-XXXY IS THE CAPT'S SEAT AND THE XXX-XXXX IS THE FO SEAT ASSEMBLY. I LOOKED AT THE FO PART NUMBER AND TYPED IN THE CAPT'S SEAT PART NUMBER BY MISTAKE. REQUESTED TO WORK ANY OTHER SHIFT AS I CANNOT SLEEP WHILE WORKING THIS SHIFT. DOCTOR'S VISITS AND PRESCRIPTION DRUGS ARE NO HELP. OTHER THAN THAT; JUST TRY TO BE MORE DILIGENT AND DOUBLECHK EVERYTHING. INCORRECT PART NUMBER ENTERED INTO MAINT RPT. WITH NO SLEEP FOR 2 OR 3 DAYS; MISTAKES ARE EASY TO MAKE; HARD TO CATCH. SUPPLEMENTAL INFO FROM ACN 670327: I WAS ASSIGNED TO CLEAR AN MEL BY REPLACING A FO'S SEAT ASSY; DUE TO INOP LUMBAR ADJUSTMENT. MY LEAD HANDED ME THE PRINTOUT; AND TOLD ME HE ORDERED THE SEAT AND HAD IT DELIVERED TO THE ACFT. I INSTALLED THE NEW SEAT PER THE MM; AND CLEARED THE MEL. AFTER 5 LEGS (NO SVC INTERRUPTIONS); A TECH NOTICED THE SEAT WAS INCORRECT; THAT IT WAS A CAPT'S SEAT. HE MADE A DISCREPANCY IN THE LOG AND TOOK ACTION BY INSTALLING THE PROPER SEAT. DUE TO AN INCORRECT PART NUMBER IN THE WORK ORDER; AND MY FAILURE TO VERIFY THE PART NUMBER; I MISTAKENLY INSTALLED THE WRONG SEAT ASSY. SAFETY OF THE CREW MEMBER WAS NOT COMPROMISED SINCE THE SEAT WAS FULLY FUNCTIONAL.

Data retrieved from NASA's ASRS site as of January 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.

A B757-200 first officer's seat lumbar support was deferred per the MEL. Technician entered wrong part number for seat. Seat was replaced at another station with wrong seat using deferred item part number.