Air carrier captain reported taking evasive action at 400 feet AGL during departure from isp to avoi...

Narrative:

We had to wait several minutes for a takeoff clearance due to general aviation operations. The tower controller at the time of departure was having a difficult time with the aircraft that turned into us. It may have been a student pilot as he sounded very inexperienced over the radio. We were finally cleared for departure from runway 6; flying an assigned heading of 059 and maintain 3000. As we were climbing through about 400 AGL I spotted the single engine turning toward us. It was so close and converging that I had no time to point it out to my first officer who was flying. I immediately said 'I have the aircraft;' and started an aggressive climbing left turn to get away from it. My first officer did not see the aircraft until it was passing off his side of the aircraft. He said that he thought it was less than a quarter of a mile. This is my second near miss at this airport. The controller was very agitated with this aircraft operator for failing to follow his assigned clearance. I know that we must share the airspace with general aviation; however; I feel that something has to be done to prevent a tragedy from occurring at this airport.

Original NASA ASRS Text

Title: Air carrier Captain reported taking evasive action at 400 feet AGL during departure from ISP to avoid a GA aircraft that was not complying with the Tower's instructions.

Narrative: We had to wait several minutes for a takeoff clearance due to general aviation operations. The Tower Controller at the time of departure was having a difficult time with the aircraft that turned into us. It may have been a student pilot as he sounded very inexperienced over the radio. We were finally cleared for departure from Runway 6; flying an assigned heading of 059 and maintain 3000. As we were climbing through about 400 AGL I spotted the single engine turning toward us. It was so close and converging that I had no time to point it out to my First Officer who was flying. I immediately said 'I have the aircraft;' and started an aggressive climbing left turn to get away from it. My First Officer did not see the aircraft until it was passing off his side of the aircraft. He said that he thought it was less than a quarter of a mile. This is my second near miss at this airport. The Controller was very agitated with this aircraft operator for failing to follow his assigned clearance. I know that we must share the airspace with General Aviation; however; I feel that something has to be done to prevent a tragedy from occurring at this airport.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

Attributes
ACN	1462525
Time
Date	201707
Local Time Of Day	1201-1800
Place
Locale Reference	ISP.Airport
State Reference	NY
Environment
Light	Daylight
Aircraft 1
Make Model Name	Large Transport Low Wing 2 Turbojet Eng
Operating Under FAR Part	Part 121
Flight Phase	Climb
Flight Plan	IFR
Aircraft 2
Make Model Name	Small Aircraft High Wing 1 Eng Fixed Gear
Operating Under FAR Part	Part 91
Flight Phase	Initial Approach
Flight Plan	None
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 279
Events
Anomaly	ATC Issue All Types Conflict Airborne Conflict
Miss Distance	Horizontal 1500

Air carrier captain reported taking evasive action at 400 feet AGL during departure from isp to avoid a GA aircraft that was not complying with the tower's instructions.