Narrative:

Captain's yoke trim switch was changed and the CAT ii statement was not documented in the sign-off. This occurred because the technician did not realize that the pitch trim switch that was replaced was a CAT-2 system component. I; as the supervisor; was unaware that the statement wasn't used until after the fact. Also; due to other aircraft that were being addressed; follow-up action was not taken to review the paperwork for errors until after the fact. These occurrences will continue to occur at this particular airline; until quality control takes corrective measures to address the real root cause. To prevent these occurrences in the future; all CAT-2 critical components must be identified at the warehouse before the line mechanics receive these parts. Because there are human factors involved and many different components that require research to identify them as CAT-2 components; rii components or rvsm components; I believe that this identification process should be made at the receiving inspection level. By identifying these components before the mechanic takes possession; this would put in place a line of defense and thus prevent more mishaps. Day [shift]; aircraft out of service.

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Original NASA ASRS Text

Title: After a Captain's pitch trim switch had been replaced on a company ERJ-170; two Maintenance Supervisors and a Contract Maintenance Technician describe the human factor issues that contributed to their missing a required CAT-2 statement that was not entered in the logbook.

Narrative: Captain's yoke trim switch was changed and the CAT II statement was not documented in the sign-off. This occurred because the Technician did not realize that the pitch trim switch that was replaced was a CAT-2 System component. I; as the Supervisor; was unaware that the statement wasn't used until after the fact. Also; due to other aircraft that were being addressed; follow-up action was not taken to review the paperwork for errors until after the fact. These occurrences will continue to occur at this particular airline; until Quality Control takes corrective measures to address the real root cause. To prevent these occurrences in the future; all CAT-2 Critical Components must be identified at the warehouse before the line mechanics receive these parts. Because there are human factors involved and many different components that require research to identify them as CAT-2 components; RII components or RVSM components; I believe that this identification process should be made at the receiving inspection level. By identifying these components before the Mechanic takes possession; this would put in place a line of defense and thus prevent more mishaps. Day [shift]; Aircraft Out of Service.

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.