The Swede finished as leading amateur at the Scandinavian Mixed hosted by Henrik & Annika two weeks ago and was taking his first steps on the European Tour in the paid ranks at Golfclub München Eichenried.
He was two over for his round as he stood 270 yards from the flag on the par four 16th tee but one swing of a three wood turned his day around in spectacular style.
"I was kind of mad going into that hole, actually," he said. "I played really poorly and then my caddie gave me the go to go for it.
I just saw people behind the green going crazy and I kind of realised as I walked off the tee almost, it was amazing
"It was a perfect three wood number and I knew that I could miss it a little right and a little left of the pin so I was aggressive towards it.
"I hit it and I didn't see where it went and I just saw people behind the green going crazy and I kind of realised as I walked off the tee almost, it was amazing.
"I've had three on par threes but I've never been close on a par four so that was amazing."
Norrman's ace was the 23rd of the season and second on a par four after after South Korean Kyongjun Moon at the Kenya Savannah Classic supported by Absa.