B767-300ER was dispatched with the incorrect fan air modulating valve installed on the left engine.

Attributes
ACN	638275
Time
Date	200411
Day	Wed
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : zzz.airport
State Reference	US
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B767-300 and 300 ER
Operating Under FAR Part	Part 121
Flight Phase	ground : maintenance
Person 1
Affiliation	company : air carrier
Qualification	technician : powerplant technician : airframe
Experience	maintenance avionics : 22
ASRS Report	638275
Person 2
Affiliation	company : air carrier
Qualification	technician : powerplant technician : airframe
Experience	maintenance technician : 32
ASRS Report	638272
Events
Anomaly	aircraft equipment problem : critical maintenance problem : improper maintenance maintenance problem : improper documentation non adherence : published procedure non adherence : far
Independent Detector	other other : 1
Resolutory Action	none taken : detected after the fact
Consequence	other other
Factors
Maintenance	contributing factor : schedule pressure contributing factor : manuals performance deficiency : logbook entry performance deficiency : installation performance deficiency : non compliance with legal requirements
Supplementary
Problem Areas	Maintenance Human Performance
Primary Problem	Maintenance Human Performance

Narrative:

Aircraft arrived for a transit check and other maintenance. Aircraft had an inbound PIREP on log page item 001, 'left engine bleed overheat followed by left engine bleed off message during climb out.' recovered left engine at cruise altitude per QRH. Aircraft was moved off the gate to the air carrier maintenance area. Mr X and I were reassigned to work on the PIREP. I was taken to aircraft X then left there and mr X went to get other transportation. Mr X returned with the part which I helped him remove and replace and replace the fan air valve on the left engine. Mr X went up to start the paperwork and I filled out the parts tag. I noted that the part had a different dash number, but the base number was the same, which is not unusual, and thought the part was ok. Later that day, ZZZ line stores notified maintenance that the manufacturer's part number of the removed part (a fan air valve) was different than the manufacturer's part number of the installed part Y. Maintenance contacted maintenance controller and a set-up was added to replace the valve upon arrival at its destination due to an incorrect part installed.

Original NASA ASRS Text

Title: B767-300ER WAS DISPATCHED WITH THE INCORRECT FAN AIR MODULATING VALVE INSTALLED ON THE L ENG.

Narrative: ACFT ARRIVED FOR A TRANSIT CHK AND OTHER MAINT. ACFT HAD AN INBOUND PIREP ON LOG PAGE ITEM 001, 'L ENG BLEED OVERHEAT FOLLOWED BY L ENG BLEED OFF MESSAGE DURING CLBOUT.' RECOVERED L ENG AT CRUISE ALT PER QRH. ACFT WAS MOVED OFF THE GATE TO THE ACR MAINT AREA. MR X AND I WERE REASSIGNED TO WORK ON THE PIREP. I WAS TAKEN TO ACFT X THEN LEFT THERE AND MR X WENT TO GET OTHER TRANSPORTATION. MR X RETURNED WITH THE PART WHICH I HELPED HIM REMOVE AND REPLACE AND REPLACE THE FAN AIR VALVE ON THE L ENG. MR X WENT UP TO START THE PAPERWORK AND I FILLED OUT THE PARTS TAG. I NOTED THAT THE PART HAD A DIFFERENT DASH NUMBER, BUT THE BASE NUMBER WAS THE SAME, WHICH IS NOT UNUSUAL, AND THOUGHT THE PART WAS OK. LATER THAT DAY, ZZZ LINE STORES NOTIFIED MAINT THAT THE MANUFACTURER'S PART NUMBER OF THE REMOVED PART (A FAN AIR VALVE) WAS DIFFERENT THAN THE MANUFACTURER'S PART NUMBER OF THE INSTALLED PART Y. MAINT CONTACTED MAINT CTLR AND A SET-UP WAS ADDED TO REPLACE THE VALVE UPON ARR AT ITS DEST DUE TO AN INCORRECT PART INSTALLED.

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.