Narrative:

Aircraft came into the hangar with a r-hand gear problem where the gear would not stay up with the gear handle in the 'off' position. After discussing it, we decided to change the uplock actuator. I began removing the bad actuator while the lead and another mechanic looked up the new actuator. When I finished removing the bad actuator, I was handed the new actuator, at which point I installed it. We performed an operations check and all was good. I signed off the paperwork. The problem was that although illustrated parts catalog showed the actuator effective for the aircraft, it was only effective for the l-hand side. The first screen in illustrated parts catalog lists the l-hand actuator as 'main landing gear uplock/downlock L1' while the right side is listed as 'main landing gear lock inboard/outboard r-hand.' this is from what I understand caused some confusion. In the future I will be more assertive in making sure the right part has been taken for the job. Supplemental information from acn 600086: I will be sure to check for a position/location effectivity more thoroughly in the future and make sure my leads and fellow co-workers are also aware of part and location/position effectivity.

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Original NASA ASRS Text

Title: A B737-300 WAS DISPATCHED IN NON COMPLIANCE WITH THE INCORRECT R MAIN LNDG GEAR UPLOCK ACTUATOR INSTALLED.

Narrative: ACFT CAME INTO THE HANGAR WITH A R-HAND GEAR PROB WHERE THE GEAR WOULD NOT STAY UP WITH THE GEAR HANDLE IN THE 'OFF' POS. AFTER DISCUSSING IT, WE DECIDED TO CHANGE THE UPLOCK ACTUATOR. I BEGAN REMOVING THE BAD ACTUATOR WHILE THE LEAD AND ANOTHER MECH LOOKED UP THE NEW ACTUATOR. WHEN I FINISHED REMOVING THE BAD ACTUATOR, I WAS HANDED THE NEW ACTUATOR, AT WHICH POINT I INSTALLED IT. WE PERFORMED AN OPS CHK AND ALL WAS GOOD. I SIGNED OFF THE PAPERWORK. THE PROB WAS THAT ALTHOUGH ILLUSTRATED PARTS CATALOG SHOWED THE ACTUATOR EFFECTIVE FOR THE ACFT, IT WAS ONLY EFFECTIVE FOR THE L-HAND SIDE. THE FIRST SCREEN IN ILLUSTRATED PARTS CATALOG LISTS THE L-HAND ACTUATOR AS 'MAIN LNDG GEAR UPLOCK/DOWNLOCK L1' WHILE THE R SIDE IS LISTED AS 'MAIN LNDG GEAR LOCK INBOARD/OUTBOARD R-HAND.' THIS IS FROM WHAT I UNDERSTAND CAUSED SOME CONFUSION. IN THE FUTURE I WILL BE MORE ASSERTIVE IN MAKING SURE THE RIGHT PART HAS BEEN TAKEN FOR THE JOB. SUPPLEMENTAL INFO FROM ACN 600086: I WILL BE SURE TO CHK FOR A POS/LOCATION EFFECTIVITY MORE THOROUGHLY IN THE FUTURE AND MAKE SURE MY LEADS AND FELLOW CO-WORKERS ARE ALSO AWARE OF PART AND LOCATION/POS EFFECTIVITY.

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.