Narrative:

While working on an flight control data concentrator (fcdc) #2 write-up; my partner notified me that; while in the main avionics compartment; that he noticed the engine interface unit (eiu) #2 hold down knobs were loose but that the eiu was securely seated in its rack. No further info was given to me at that time and I was under the belief that he was taking responsibility to secure the loose eiu hold down knobs. After this information was given to me I continued and then completed my repair of the fcdc #2 problem. Shortly after the aircraft pushed off the gate; my co-worker asked me if I had tightened the eiu #2 hold down knobs. I told him that I did not because I was under the impression that he had taken responsibility to correct that discrepancy. He immediately informed a maintenance lead of the unsecure eiu #2 and requested that the aircraft return to the gate. The aircraft returned and the discrepancy was corrected and documented. The aircraft then departed with no further incident.

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Original NASA ASRS Text

Title: Two mechanics report an aircraft nearly taxied out without having the Engine Interface Unit (EIU) 2 hold down knobs tightened.

Narrative: While working on an Flight Control Data Concentrator (FCDC) #2 write-up; my partner notified me that; while in the main avionics compartment; that he noticed the Engine Interface Unit (EIU) #2 hold down knobs were loose but that the EIU was securely seated in its rack. No further info was given to me at that time and I was under the belief that he was taking responsibility to secure the loose EIU hold down knobs. After this information was given to me I continued and then completed my repair of the FCDC #2 problem. Shortly after the aircraft pushed off the gate; my co-worker asked me if I had tightened the EIU #2 hold down knobs. I told him that I did not because I was under the impression that he had taken responsibility to correct that discrepancy. He immediately informed a Maintenance Lead of the unsecure EIU #2 and requested that the aircraft return to the gate. The aircraft returned and the discrepancy was corrected and documented. The aircraft then departed with no further incident.

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.