Believe it was an A319
Don't know who the observers on the ground were but from Avherald (indicating GA from 50AGL):
"Ground witnesses reported the aircraft pitched up for the go-around, the engines accelerated and were about reaching maximum thrust when the right hand engine surged emitting bangs and streaks of flame, possibly due to a wind gust, causing the aircraft to seriously roll still very close to the ground. For a few seconds it appeared the aircraft would not be able to maintain height before the crew regained control, accelerated the aircraft and climbed out to safety."
but:
"go around with the crew describing marginal climb and roll performance"