A line mechanic reports finding fuel dripping out of the left wing center tank fuel pump panel durin...

Narrative:

One of our B767-300 aircraft was in the hangar for a maintenance check. Mechanic 'X' and myself were assigned to perform the left-hand (lh) side override jettison pump diffuser check and other exterior job cards. During the walk around I found fuel dripping out of the left hand wing; center tank fuel pump panel. After removing the panel; we found fuel dripping out of the inboard side fuel pump on the center; left hand fuel tank. After further investigation we discovered that the fuel pump installed was not the correct fuel pump for our B767-300 nose number. The incorrect fuel pump had a -37 number and a part number effective for other B767 nose numbers. This is verified on illustrated parts catalog (ipc) chapter 28-22-05-001A; page 'X.' the correct fuel pump is noted in ipc 28-22-05-001A; page 'Y;' which is effective for this aircraft's nose number.this illegal fuel pump was removed on my shift. At this time we were unsure if the correct sleeve was installed with the -37 pump or if any sleeve was changed by the mechanic. Dayshift mechanics continued working problem. I made a write-up against the aircraft.

Original NASA ASRS Text

Title: A Line Mechanic reports finding fuel dripping out of the left wing center tank fuel pump panel during a Maintenance check that included an override jettison pump diffuser check on a B767-300. Further investigation revealed the fuel pump installed was not the correct pump for the aircraft.

Narrative: One of our B767-300 aircraft was in the hangar for a Maintenance check. Mechanic 'X' and myself were assigned to perform the left-hand (LH) side override jettison pump diffuser check and other exterior job cards. During the walk around I found fuel dripping out of the left hand wing; center tank fuel pump panel. After removing the panel; we found fuel dripping out of the inboard side fuel pump on the center; left hand fuel tank. After further investigation we discovered that the fuel pump installed was not the correct fuel pump for our B767-300 nose number. The incorrect fuel pump had a -37 number and a part number effective for other B767 nose numbers. This is verified on Illustrated Parts Catalog (IPC) Chapter 28-22-05-001A; page 'X.' The correct fuel pump is noted in IPC 28-22-05-001A; page 'Y;' which is effective for this aircraft's nose number.This illegal fuel pump was removed on my shift. At this time we were unsure if the correct sleeve was installed with the -37 pump or if any sleeve was changed by the Mechanic. Dayshift mechanics continued working problem. I made a Write-up against the aircraft.

Data retrieved from NASA's ASRS site as of April 2012 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.

Attributes
ACN	878157
Time
Date	201003
Local Time Of Day	0001-0600
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Night
Aircraft 1
Make Model Name	B767-300 and 300 ER
Operating Under FAR Part	Part 121
Flight Phase	Parked
Component
Aircraft Component	Fuel Booster Pump
Person 1
Function	Technician
Qualification	Maintenance Airframe Maintenance Powerplant
Events
Anomaly	Aircraft Equipment Problem Critical Deviation - Procedural FAR Deviation - Procedural Maintenance Deviation - Procedural Published Material / Policy

A line mechanic reports finding fuel dripping out of the left wing center tank fuel pump panel during a maintenance check that included an override jettison pump diffuser check on a B767-300. Further investigation revealed the fuel pump installed was not the correct pump for the aircraft.