Safety recommendation
NTSB Recommends FAA Provide Guidance to Air Traffic Controllers
The National Transportation Safety Board issued a recommendation regarding controller supervisor interactions.
The National Transportation Safety Board recommends that the Federal Aviation Administration provide information to all air traffic controllers detailing the actions they should expect from first-line supervisors if, in the supervisor's judgment, the controller's actions while working actual traffic have been incorrect and have created a dangerous situation.
Original regulatory source: https://data.ntsb.gov/carol-main-public/sr-details/A-89-119