Narrative:

'A' check task cards were issued as usual. I divided the task cards into the aircraft areas to be worked. I took the interior 'a' check cards to the B737-800 aircraft and reviewed them noticing there was a new stand alone task card added to the night's check that required a check of the passenger seats on the right side of the aircraft. I read task card XXXX; passenger seats inspection/operational check-right; task instructions in its entirety and realized that it was very similar to our [technician] seat inspection done as part of the 'a' check interior card. I placed the task card with my other task cards after reviewing them all and went about my work for the night. During completion of my night's work; I stamped-off the completed tasks until fully complete; not realizing that task card XXXX was an inspection card. I reviewed the task cards looking for missing blocks; found none and turned in my paper work. On my following work night; a co-worker was completing the same card and was talking about some of the discrepancies he found. I spoke to him about completing the task card the night before and realized upon looking at his paperwork that his was an inspection card. I went to my supervisor and asked him if I could check if the card being worked that night was the same as I had worked on the previous night. I realized my mistake and again let the supervisor know about the problem with the previous B737-800 paperwork. Task card XXXX; passenger seats inspection/operational check-right; was a task card I did not recognize. In my review of the card; although I read thoroughly thru the task instructions; I did not recognize that this was an inspection card. I understand the different sign-off locations; indicating technician and inspection stamp areas on our task cards. However; task card XXXX is so similar to our other [technician] seat inspection cards that are already done as part of the 'a' check interior card (not an inspection card); that I wrongfully assumed it was a technician's card. Also; I always look for items that may require inspection due to being rii required systems and ETOPS critical systems that would normally [be] red flagged for multi-system maintenance; and a seat check did not set me in that line of thought. Finally I should have seen the inspection blocks I stamped; on final review but I was tired that night and during the final review I saw no blank areas of paperwork signoffs (since I had already reviewed and read all task instructions at the beginning of the night); I assumed all was correct and turned in my paperwork. Supervisor verified that the [inspection] card was a stand alone card and that the aircraft had not over flown [the inspection card] scheduled due date. The card was re-issued for completion on the aircraft. Supervisor counseled me on the problem and its effects. My mistake was in complacency and fatigue/lack of sleep. Both are problems that I know and recognize. The initial failure to not recognize the inspection task; complacency; believing that because it was similar to the other 'a' check card (non-inspection); and fatigue/lack of sleep in not recognizing my mistake on final paperwork review. In order to prevent a recurrence I will have to try to maintain better focus before; and after work completion; in order to slow down; reassess and re-focus for initial and final paperwork review.

Related reports:

Google
 

Original NASA ASRS Text

Title: A Line Mechanic reports he failed to notice a Passenger Seat Inspection Operational Check Taskcard for the right cabin seats on a B737-800 was actually a stand alone Jobcard for Inspection only. He had included the Inspection Card with other 'A' Check Interior jobcards and signed all them off.

Narrative: 'A' Check task cards were issued as usual. I divided the task cards into the aircraft areas to be worked. I took the Interior 'A' Check Cards to the B737-800 aircraft and reviewed them noticing there was a new stand alone task card added to the night's check that required a check of the passenger seats on the right side of the aircraft. I read Task Card XXXX; PASSENGER SEATS INSPECTION/OPERATIONAL CHECK-RIGHT; task instructions in its entirety and realized that it was very similar to our [Technician] Seat Inspection done as part of the 'A' Check Interior Card. I placed the task card with my other task cards after reviewing them all and went about my work for the night. During completion of my night's work; I stamped-off the completed tasks until fully complete; not realizing that Task Card XXXX was an Inspection Card. I reviewed the task cards looking for missing blocks; found none and turned in my paper work. On my following work night; a co-worker was completing the same card and was talking about some of the discrepancies he found. I spoke to him about completing the task card the night before and realized upon looking at his paperwork that his was an Inspection Card. I went to my Supervisor and asked him if I could check if the card being worked that night was the same as I had worked on the previous night. I realized my mistake and again let the Supervisor know about the problem with the previous B737-800 paperwork. Task Card XXXX; PASSENGER SEATS INSPECTION/OPERATIONAL CHECK-RIGHT; was a task card I did not recognize. In my review of the card; although I read thoroughly thru the task instructions; I did not recognize that this was an Inspection Card. I understand the different sign-off locations; indicating Technician and Inspection stamp areas on our task cards. However; Task Card XXXX is so similar to our other [Technician] Seat Inspection cards that are already done as part of the 'A' Check Interior Card (not an Inspection Card); that I wrongfully assumed it was a Technician's card. Also; I always look for items that may require Inspection due to being RII Required Systems and ETOPS critical systems that would normally [be] red flagged for multi-system maintenance; and a Seat Check did not set me in that line of thought. Finally I should have seen the Inspection blocks I stamped; on Final Review but I was tired that night and during the Final Review I saw no blank areas of paperwork signoffs (since I had already reviewed and read all task instructions at the beginning of the night); I assumed all was correct and turned in my paperwork. Supervisor verified that the [Inspection] Card was a stand alone card and that the aircraft had not over flown [the Inspection Card] scheduled due date. The card was re-issued for completion on the aircraft. Supervisor counseled me on the problem and its effects. My mistake was in complacency and fatigue/lack of sleep. Both are problems that I know and recognize. The initial failure to not recognize the Inspection Task; complacency; believing that because it was similar to the other 'A' Check card (non-Inspection); and fatigue/lack of sleep in not recognizing my mistake on final paperwork review. In order to prevent a recurrence I will have to try to maintain better focus before; and after work completion; in order to slow down; reassess and re-focus for initial and final paperwork review.

Data retrieved from NASA's ASRS site as of April 2012 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.