Narrative:

My failure to sign off an airworthiness release on aircraft X after an inspection had been completed that night per maintenance manual procedures. I was ending my shift, and more work needed to be complied with. Upon returning the following night, I saw the work was done and pulled the log pages from the logbook, but didn't sign off the airworthiness release. I didn't realize that airworthiness release was needed, since I hadn't dealt with this level of maintenance before, having been assigned to this schedule and type of maintenance for only 2 weeks. Prior to this assignment, I had spent 17 yrs on the flight line doing line maintenance for which I had become thoroughly familiar with the required paperwork. Hangar maintenance level maintenance was new to me. The problem was found on an FAA routine records inspection. I have since been counseled on the provisions of the general maintenance manual regarding the airworthiness release signoff. A records review has been completed, and no other occurrences have been found. I am now well aware of when an airworthiness release signoff is required.

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Original NASA ASRS Text

Title: DC9-32 MECH DID NOT SIGN THE ACFT AIRWORTHINESS RELEASE BEFORE FLT. IT WAS FOUND BY AN FAA MAINT INSPECTOR.

Narrative: MY FAILURE TO SIGN OFF AN AIRWORTHINESS RELEASE ON ACFT X AFTER AN INSPECTION HAD BEEN COMPLETED THAT NIGHT PER MAINT MANUAL PROCS. I WAS ENDING MY SHIFT, AND MORE WORK NEEDED TO BE COMPLIED WITH. UPON RETURNING THE FOLLOWING NIGHT, I SAW THE WORK WAS DONE AND PULLED THE LOG PAGES FROM THE LOGBOOK, BUT DIDN'T SIGN OFF THE AIRWORTHINESS RELEASE. I DIDN'T REALIZE THAT AIRWORTHINESS RELEASE WAS NEEDED, SINCE I HADN'T DEALT WITH THIS LEVEL OF MAINT BEFORE, HAVING BEEN ASSIGNED TO THIS SCHEDULE AND TYPE OF MAINT FOR ONLY 2 WKS. PRIOR TO THIS ASSIGNMENT, I HAD SPENT 17 YRS ON THE FLT LINE DOING LINE MAINT FOR WHICH I HAD BECOME THOROUGHLY FAMILIAR WITH THE REQUIRED PAPERWORK. HANGAR MAINT LEVEL MAINT WAS NEW TO ME. THE PROB WAS FOUND ON AN FAA ROUTINE RECORDS INSPECTION. I HAVE SINCE BEEN COUNSELED ON THE PROVISIONS OF THE GENERAL MAINT MANUAL REGARDING THE AIRWORTHINESS RELEASE SIGNOFF. A RECORDS REVIEW HAS BEEN COMPLETED, AND NO OTHER OCCURRENCES HAVE BEEN FOUND. I AM NOW WELL AWARE OF WHEN AN AIRWORTHINESS RELEASE SIGNOFF IS REQUIRED.

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.