Narrative:

The part that was installed on the aircraft was a part that was pre-drawn on the work card. I noticed that every digit contained in the company stores number were all the same except for the last digit. I then proceeded to check the company stores number. The nomenclature under that company stores number checked the same. Once I had installed the part and performed the operations check; the test checked good.callback conversation with reporter revealed the following information: reporter stated that although the removed and replaced HF coupler part numbers are entered into their maintenance system computer database; it was the maintenance manager who somehow noticed the part serviceable tag and tracking paperwork did not agree. That was how they found out the incorrect HF coupler for a B757-200 was mixed with an airbus A320. Reporter stated the HF coupler box looks the same except for an extra pin on the connector. The male and female connector on the rack and the back of the HF coupler box are the same for both boeing and airbus aircraft. The operational tests he performed using the A320's onboard multipurpose control and display unit (mcdu) indicated the boeing HF coupler passed the airbus required tests.

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Original NASA ASRS Text

Title: MECHANIC RPTS HE INSTALLED AN HF COUPLER MEANT FOR A B757-200 IN AN AIRBUS A320. OPERATIONAL CHECK USING THE MCDU PASSED. UNIT LATER REPLACED.

Narrative: THE PART THAT WAS INSTALLED ON THE ACFT WAS A PART THAT WAS PRE-DRAWN ON THE WORK CARD. I NOTICED THAT EVERY DIGIT CONTAINED IN THE COMPANY STORES NUMBER WERE ALL THE SAME EXCEPT FOR THE LAST DIGIT. I THEN PROCEEDED TO CHECK THE COMPANY STORES NUMBER. THE NOMENCLATURE UNDER THAT COMPANY STORES NUMBER CHECKED THE SAME. ONCE I HAD INSTALLED THE PART AND PERFORMED THE OPS CHECK; THE TEST CHECKED GOOD.CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATED THAT ALTHOUGH THE REMOVED AND REPLACED HF COUPLER PART NUMBERS ARE ENTERED INTO THEIR MAINTENANCE SYSTEM COMPUTER DATABASE; IT WAS THE MAINTENANCE MANAGER WHO SOMEHOW NOTICED THE PART SERVICEABLE TAG AND TRACKING PAPERWORK DID NOT AGREE. THAT WAS HOW THEY FOUND OUT THE INCORRECT HF COUPLER FOR A B757-200 WAS MIXED WITH AN AIRBUS A320. RPTR STATED THE HF COUPLER BOX LOOKS THE SAME EXCEPT FOR AN EXTRA PIN ON THE CONNECTOR. THE MALE AND FEMALE CONNECTOR ON THE RACK AND THE BACK OF THE HF COUPLER BOX ARE THE SAME FOR BOTH BOEING AND AIRBUS ACFT. THE OPERATIONAL TESTS HE PERFORMED USING THE A320'S ONBOARD MULTIPURPOSE CONTROL AND DISPLAY UNIT (MCDU) INDICATED THE BOEING HF COUPLER PASSED THE AIRBUS REQUIRED TESTS.

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