It brings the 2014 suspension tally to three - that we know of.
The officer, 43, will appear in Darwin Magistrates Court on April 8.
The nature of the alleged offence and the officer's name and rank have been withheld by NT Police.
Police will only say the minimal information they have provided is in line with "transparency" guidelines.
In an unrelated matter, an auxiliary officer, 48, was charged on January 29 after an investigation into an allegation of sexual assault.
Earlier that month, police suspended an officer, 40, but did not release details.
The media release was later removed from the police website.
The NT News revealed this month police also kept quiet the suspension and demotion of a female officer after she was found to have attended a nightclub while off duty to "investigate" an altercation involving her then-boyfriend.
Police Association boss Vince Kelly says the officer was actually suspended and demoted over a different incident - but says it is the force's duty, not his, to provide all the facts.
The NTPFES 2012-13 annual report shows two members were sacked, three were demoted, one was fined, and one had salary reduced.
Twenty-six members were given a formal caution in writing and 27 were given a period of good behaviour.