Prosecutors went after “ghost” school operators but rarely pursued students who enrolled just to collect housing subsidies, a Post investigation found.

The Army is “committed to enforcing standards and holding personnel accountable,” an official said. The flybys were not authorized.

An Army official said “appropriate action” will be taken if the probe reveals violations of safety standards or other regulations.

The Post examined the bright skyline around Reagan National Airport and whether it may have been a factor in the January accident, which killed 67 people.