“A lady from Dublin (I assume she was an agent) came to the cockpit and asked us to pull the CVR and FDR circuit breakers. As there was other personnel in the cockpit speaking to the captain who was on the phone with dispatch at the time, I proceeded to locate and
pull the breakers. At this time there were at least four persons in the cramped cockpit and with difficulty I tried to locate the breakers to be pulled. It was late and just getting light and we were tired and very busy attempting to manage all of the duties placed upon us at that moment with coordinating with the company, the medical personnel, the maintenance staff, the flight attendants and the Irish Safety
Authorities. I finally located the FDR breakers but apparently I had completely missed the CVR breakers. I advised the Agent and the Captain that I had pulled the breakers thinking that I had pulled all of the breakers asked of me. I didn’t even realize this mistake until the
next day when the agent present on our outgoing flight mentioned that the CVR tapes were not usable due to the breakers not being pulled. At that time I searched the circuit breaker panel and found the CVR breakers and realized that I missed them the night
before. This was not done intentionally”.