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A B767-300 was dispatched in non compliance of an airworthiness directive with a modified boost pump installed in an unmodified aircraft.
| Attributes | |
| ACN | 536401 |
| Time | |
| Date | 200201 |
| Day | Wed |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| 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 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Qualification | technician : airframe technician : powerplant |
| Experience | maintenance technician : 10 |
| ASRS Report | 536401 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : airframe technician : powerplant |
| Experience | maintenance technician : 3 |
| ASRS Report | 536405 |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : improper maintenance 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 : manuals contributing factor : work cards performance deficiency : non compliance with legal requirements performance deficiency : inspection |
| Supplementary | |
| Problem Areas | Chart Or Publication Aircraft |
| Primary Problem | Maintenance Human Performance |
Narrative:
Performed routine inspection of the fuel override boost pumps on a B767-300 aircraft as required by airworthiness directive 94-11-05 and 2001-15-08. Found right fuel boost pump internal seal deteriorated. I inadvertently ordered a replacement pump that was modified per airworthiness directive 2001-15-08, however, the airframe was not modified per airworthiness directive 2001-15-08. Another technician installed the boost pump and signed the log item. I got the part number information from the list. The part number on the list was the part number for the modified part that needed to be installed for accomplishment of the airworthiness directive 2001-15-08. Other B767 lists have a cautionary note to install only modified pumps because the airworthiness directive has been complied with. The cautionary note does not include a part number, however, unmodified aircraft have a part number for a modified pump listed on the list. I confused the 2 items and ordered the wrong pump. In my opinion, to avoid reoccurrence of the confusion, I would suggest elimination of the part numbers being listed on the list.
Original NASA ASRS Text
Title: A B767-300 WAS DISPATCHED IN NON COMPLIANCE OF AN AIRWORTHINESS DIRECTIVE WITH A MODIFIED BOOST PUMP INSTALLED IN AN UNMODIFIED ACFT.
Narrative: PERFORMED ROUTINE INSPECTION OF THE FUEL OVERRIDE BOOST PUMPS ON A B767-300 ACFT AS REQUIRED BY AIRWORTHINESS DIRECTIVE 94-11-05 AND 2001-15-08. FOUND R FUEL BOOST PUMP INTERNAL SEAL DETERIORATED. I INADVERTENTLY ORDERED A REPLACEMENT PUMP THAT WAS MODIFIED PER AIRWORTHINESS DIRECTIVE 2001-15-08, HOWEVER, THE AIRFRAME WAS NOT MODIFIED PER AIRWORTHINESS DIRECTIVE 2001-15-08. ANOTHER TECHNICIAN INSTALLED THE BOOST PUMP AND SIGNED THE LOG ITEM. I GOT THE PART NUMBER INFO FROM THE LIST. THE PART NUMBER ON THE LIST WAS THE PART NUMBER FOR THE MODIFIED PART THAT NEEDED TO BE INSTALLED FOR ACCOMPLISHMENT OF THE AIRWORTHINESS DIRECTIVE 2001-15-08. OTHER B767 LISTS HAVE A CAUTIONARY NOTE TO INSTALL ONLY MODIFIED PUMPS BECAUSE THE AIRWORTHINESS DIRECTIVE HAS BEEN COMPLIED WITH. THE CAUTIONARY NOTE DOES NOT INCLUDE A PART NUMBER, HOWEVER, UNMODIFIED ACFT HAVE A PART NUMBER FOR A MODIFIED PUMP LISTED ON THE LIST. I CONFUSED THE 2 ITEMS AND ORDERED THE WRONG PUMP. IN MY OPINION, TO AVOID REOCCURRENCE OF THE CONFUSION, I WOULD SUGGEST ELIMINATION OF THE PART NUMBERS BEING LISTED ON THE LIST.
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.