Narrative:

October 2013; I had B757-200 aircraft work package that included troubleshooting (T/south) of the auto speed brake system. I found that the auto speed brake actuator was at fault. I checked the rii list to see if the replacement of the actuator was rii; and per rii list 27-62-02 it does not. I printed out the aircraft maintenance maintenance manual (amm) reference 27-62-02-022 and read the instructions. Because I was tired and had already checked the rii list; I missed the paragraph in the amm that said the auto speed brake mechanism had to be removed to change the actuator and that requires an rii inspection. I replaced the actuator with no problems and all tests were good and the aircraft went back into service with no problems. I feel that this mistake was because I was too tired and the amm included a note that was opposite to what the rii list has. There is no need to remove the mechanism to replace this actuator and that threw me off too; but the mechanism needs an rii. I know that the amm takes preference over all other documents and I made the mistake of not reading the amm carefully enough; that will never happen again.

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Original NASA ASRS Text

Title: A Lead Aircraft Maintenance Technician (AMT) was informed he missed a required RII Inspection of an Auto Speed Brake mechanism after replacing an Auto Speed Brake actuator on a B757-200 aircraft. Technician noted that fatigue; along with a misunderstanding of a 'Note' in the Aircraft Maintenance Manual (AMM) procedures contributed to the missed RII requirement.

Narrative: October 2013; I had B757-200 aircraft Work Package that included troubleshooting (T/S) of the Auto Speed Brake System. I found that the Auto Speed Brake actuator was at fault. I checked the RII list to see if the replacement of the actuator was RII; and per RII list 27-62-02 it does not. I printed out the Aircraft Maintenance Maintenance Manual (AMM) reference 27-62-02-022 and read the instructions. Because I was tired and had already checked the RII list; I missed the paragraph in the AMM that said the Auto Speed Brake mechanism had to be removed to change the actuator and that requires an RII Inspection. I replaced the actuator with no problems and all tests were good and the aircraft went back into service with no problems. I feel that this mistake was because I was too tired and the AMM included a note that was opposite to what the RII list has. There is no need to remove the mechanism to replace this actuator and that threw me off too; but the mechanism needs an RII. I know that the AMM takes preference over all other documents and I made the mistake of not reading the AMM carefully enough; that will never happen again.

Data retrieved from NASA's ASRS site as of July 2013 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.