A319
Maintenance Airframe; Maintenance Powerplant
Communication Breakdown; Time Pressure; Situational Awareness
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural FAR; Deviation / Discrepancy - Procedural Published Material / Policy
General Maintenance Action
Aircraft; Human Factors; Procedure
ACFT arrived at gate with multiple write-ups in the logbook. My partner & I were dispatched to repair the items that the crew had written in the logbook. My partner & I repaired multiple coach seat issues & flight deck door issues. The logbook was signed and return to the flight deck. As we exit the acft the flight attendant called us back to the acft and mentioned to us that the ELT lanyard was unfolding. I removed the ELT from behind first class seats. I showed her that one of the water automatic release tape came unfastened. I mentioned to her to have the crew put it in the logbook when they arrived at the acft. I also mentioned to her that I am removing the ELT from the acft for repair and I will be returning with it prior to departure for re-installment to the acft. I went to the stock room at the hangar and to obtain another automatic release tape and res-secured the lanyard to the ELT. I immediately return to [the gate] to find out that the acft had already left without the ELT. I immediately notify my lead and he immediately notify the tower foreman. Tower foreman notify us that the acft was getting ready for takeoff and he was unable to have it return to the gate. Tower foreman mention to us that acft was scheduled to depart at XA:55. It left early at XA:44. Acft had already departed and the ELT was still in my possession. Flight attendant probably forgot to mention to the crew when they arrived to the acft. She probably became distracted while performing her cabin duties. Have the flight attendant put the discrepancy in her cabin logbook or remove the logbook from the acft. Upon returning to the acft; have the crew put it in the logbook
A Mechanic removed a component from the aircraft to perform a repair. In the process; the Mechanic notified the Flight Attendant to advise the Flight Crew to write it up. When the Mechanic returned to the gate; the aircraft had departed without the component.