A319
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Confusion; Distraction; Situational Awareness; Troubleshooting
Aircraft Equipment Problem Less Severe; Inflight Event / Encounter Unstabilized Approach
Air Traffic Control Issued New Clearance; Flight Crew Executed Go Around / Missed Approach; Flight Crew Overcame Equipment Problem; Flight Crew Requested ATC Assistance / Clarification
ATC Equipment / Nav Facility / Buildings; Aircraft; Human Factors; Software and Automation
GPS ECAM messages started occurring and going away as we got close to ZZZ. Captain notified ATC and GPS jamming was confirmed. This was a distraction for the rest of the flight. Approaching the terminal area and we had to put the jamming issue to the side to concentrate on the approach segment. Vectors were given off the ZZZZZ arrival for Runway XX; 6500 ft. prior to FAP; then cleared for the approach. I was high and was at a high rate of decent and needed to bleed off speed. I noticed the glide slope below and turned the AP (Auto Pilot) off and hand flew to get down and aligned with Runway XX. Configured to late even though we briefed the possibility of unstable approaches and the need to set up early. At 1;000 ft. call out; was unstable. Performed soft go around. While performing this; vectors and altitudes were given by Tower. Left turn and climbing instructions were given. Captain was task saturated with ATC instructions and the heading knob giving him issues; I tried to assist and accidentally turned the speed knob down instead of the heading bug. It stood at 100 and during the climb I noticed the speed decaying towards vls. I remember saying out loud; why is the speed dropping. I leveled off to keep the speed from hitting vls. Then noticed I turned the wrong knob. I asked the Captain to increase my speed. More vectors were given. Speed was increasing. AP turned on by me because I realized that could help the situation. I shouldn't have touched anything since AP was off. Captain was trying to set up the MCDU (Multipurpose Control Display Unit) for the ILS again. Captain asked for the aircraft so I can try it. Vectors to the LOC were given. We joined it; cleared for ILS. We configured early and landed safely.  Initially; the GPS jamming played a big role in distracting us. ECAM messages kept popping up; then disappearing. Captain kept trying to troubleshoot the issue. I noticed this as we got closer to the airport and simply said to him to let's focus on this arrival brief so we don't get behind. I briefed the issue of the go arounds due to aircraft being unstable on this approach. So we tried to be ready early but was too high and descending fast to fix the issue as well as off course with the vectors given. Additionally; I failed to not let the Captain handle the FCU (Fuel Control Unit) while I was flying. A lot was happening in a short time with vectors and completing the soft go around. I noticed the issue the Captain was having with the knobs on the FCU and tried to help. I should have turned on the AP; then work the FCU while the Captain handled the radios. Hand flying while doing a go around added to the stress during this event [I suggest] Configuring early. AP on while doing the go around. Situational awareness when turning knobs on the FCU. FMA (Flight Mode Annunciator) awareness.
A319 First Officer reported an un-stabilized approach and a Go Around.