Narrative:

I was working on aircraft X and I had an inspector inspect the work that I had done on inside panel on top of the aircraft. He notified me that my work was alright and that he put the panel in place for me. When I went up to tighten the panel's camlocks, I noticed that all the screw heads were aligned like they had been tightened already. I checked a couple of camlocks and came to the conclusion that the panel was secure. But I was wrong.

Google
 

Original NASA ASRS Text

Title: A DEHAVILLAND DASH 8-100 WAS DISPATCHED IN NON COMPLIANCE WITH AN UNSECURED UPPER FUSELAGE PANEL WHICH DEPARTED THE ACFT ON TAXI OUT.

Narrative: I WAS WORKING ON ACFT X AND I HAD AN INSPECTOR INSPECT THE WORK THAT I HAD DONE ON INSIDE PANEL ON TOP OF THE ACFT. HE NOTIFIED ME THAT MY WORK WAS ALRIGHT AND THAT HE PUT THE PANEL IN PLACE FOR ME. WHEN I WENT UP TO TIGHTEN THE PANEL'S CAMLOCKS, I NOTICED THAT ALL THE SCREW HEADS WERE ALIGNED LIKE THEY HAD BEEN TIGHTENED ALREADY. I CHKED A COUPLE OF CAMLOCKS AND CAME TO THE CONCLUSION THAT THE PANEL WAS SECURE. BUT I WAS WRONG.

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.