"Several individuals were flouting the paua regulations, so MPI was very happy that we were able to catch them in the act," he added.
MPI Compliance Operations Manager Gary Orr said "the great team effort on the part of the RNZAF and MPI" will potentially lead to three prosecutions and five infringement notices being issued.
"Paua are valued by customary, recreational and commercial fishers alike. We need to protect our paua stocks so future generations can enjoy them," Mr Orr said.
Air Component Commander Air Commodore Kevin McEvoy said the overt nature of an A109's patrol allows MPI to have a strong visible presence.
"This sends a very clear message to the poachers that they can be hit at any time from the land, sea and from the skies.
They have nowhere to hide," AIR CDRE McEvoy said.
"Many of these beaches and reefs are difficult and time-consuming to get to, so checking them from the air is a great way to detect fishing-related activities that would take days to cover by vehicle patrols," he added.
-MPI encourages people to report any suspicious fishing activity to 0800 4 POACHER (0800 476 224). All calls are confidential.