Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Overcame Equipment Problem; Flight Crew Executed Go Around / Missed Approach
Aircraft
During approach; I was acting as the PF and SIC. At about 400 feet or so the elevator controls [felt] a little stiff. I used the electrical trim but there was no relief to the stiff feeling of the elevator control and the aircraft wanted to pitch up. I found myself using my full strength to bring the nose down but the aircraft continued with a high pitch attitude. I mentioned it to the Captain and we exchanged controls and he found himself also having to put full force forward to prevent the aircraft from pitching up. We did a go-around. We did a left downwind turn for [the] runway; during the turn the aircraft was not very controllable and the Captain attempted to use the backup trim but there was no forward pressure relief. The Captain had to use bank angles greater than 45 degrees to keep the nose down. We also found that the aircraft was more controllable with the flaps up; perhaps do to the downwash that initially gives a nose up moment with flaps extended; so we decided to leave the flaps retracted as we did not want to aggravate the situation. We performed a visual approach with no flaps. We did an expedited brief to cover the increase Vref speed with no flaps and the runway length. Upon touchdown we both got on the brakes and proceeded to taxi to the FBO without any further incident.
The First Officer was going above glideslope on short final. I advised [and got the response] 'it's not me; it's a control issue.' We transferred controls. I was unable to correct increasing pitch. Did my best to keep aircraft from stalling and tried to find out what was wrong. I first thought it was flaps; then trim; but it was all I could do to maintain flight.
EMB-505 flight crew reported executing a go-around after experiencing elevator control difficulties on approach.