Medium Large Transport; Low Wing; 2 Turbojet Eng
Air Traffic Control Developmental
Training / Qualification; Communication Breakdown; Time Pressure
ATC Issue All Types; Conflict Airborne Conflict
Air Traffic Control Issued Advisory / Alert; Flight Crew FLC complied w / Automation / Advisory; Flight Crew Took Evasive Action
Human Factors; Procedure
I was working the Local Control position. I was made aware of a NORDO helicopter that was 4 miles west of the airport proceeding northeast bound. An air carrier called ready for departure. I already had the helicopter in sight and based on past experiences with aircraft performance I thought the departure would depart and climb at a more expedited rate. Once I realized that the helicopter was going to be a factor and it was too late to cancel the takeoff clearance; I quickly issued traffic. At that point; the departure notified me that he was responding to an RA. The helicopter remained NORDO for the whole event despite my efforts to contact him.In my opinion this was a onetime event of human error that could have been prevented if I had waited until the NORDO aircraft left my airspace.
Local Controller cleared an aircraft for takeoff with a NORDO (No Radio) helicopter crossing the departure path. The departure did not climb as the Controller expected. The aircraft received and responded to a TCAS RA.