"He was intoxicated but there are no reports that he was behaving in an objectionable or a violent manner," Mr Horner said.
"It would fall into the category of being an error of judgement due to his level of intoxication."
There were generally between one and 10 such cases each year - enough to be of concern to police.
"I think most people heed the warnings. They are quite clear and the cabin crew go to some effort to make them. I don't think it's a major problem but it is an important rule to follow and this is a timely reminder," Mr Horner said.
A Civil Aviation Authority spokesman said the authority was not requested to attend the incident.
He agreed that such incidents were not common but said it did happen occasionally.
Air New Zealand declined to comment.
According to the airline's website, modern aircraft are fitted with sensitive electronic equipment which can be affected by some types of electronic equipment carried by passengers.