What is the longest field goal in Candlestick Park history?

David Akers 59 yards in pre-season game v New Orleans on 12th August 2011. In NFL matches it is David Akers again with a 55 yard Field Goal v Dallas Cowboys on 18th September 2011. Phil Dawson (Cleveland Browns) kicked a 52 yard Field Goal v 49s at Candlestick Park on 30th October 2011.