Helicopter
Air Traffic Control Fully Certified
Situational Awareness
ATC Issue All Types; Conflict Airborne Conflict; Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Clearance
Company Policy; Human Factors; Procedure
I had a flight of three helicopters (Aircraft X) call up as inbound on a specific arrival to the Airport. The lead aircraft told me they had traffic in sight and would be behind that helicopter on the way in. Upon reaching their reporting point; Aircraft X requested to over-fly a taxiway in an opposite direction flow. I said unable; Ground needs the taxiway and they need to fly the flow they were on. They said they would stick to the correct flow. Aircraft X were on a high approach and decided to pass above the helicopter they were supposed to follow. They were less than 100 ft away from the other helicopter as they descended over the traffic they were supposed to follow. They had a similar situation I observed happen earlier today with another controller. Aircraft X did not want to slow; and descended over the other helicopter to prove a point. Aircraft X were issued a brasher warning on a mile final to their ramp and did not respond. This company refuses to respond to any pilot deviation and pretends not to hear the controller.The [company] helicopters should not be descending into other aircraft that they had in sight and were following. This has been an on-going issue. They are a safety hazard. They should respond to brasher warnings.
Tower Controller reported a flight of 3 helicopters intentionally overflew a preceding helicopter.