A319 first officer reported descending during an RA response for traffic avoidance following a near ...

Attributes
ACN	1548816
Time
Date	201806
Local Time Of Day	1201-1800
Place
Locale Reference	DCA.Airport
State Reference	DC
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	A319
Operating Under FAR Part	Part 121
Flight Phase	Takeoff
Flight Plan	IFR
Aircraft 2
Make Model Name	Small Aircraft
Operating Under FAR Part	Part 91
Person 1
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 240 Flight Crew Type 1370
Events
Anomaly	Conflict NMAC Inflight Event / Encounter CFTT / CFIT

Narrative:

Departed runway 01 normally. At 1;500 feet; received TA and noted pfd (primary flight display) traffic at +600 feet; on the nose in close proximity. When I looked out I saw a cessna 182/206 type aircraft 800 feet in front of us slightly right and 200 feet above us traveling north/northwest. I was looking at its left quarter. I told the PF (pilot flying) 'traffic visual straight ahead; turn left.' by then we received a descending RA. The PF immediately complied with both. I then notified ATC of traffic and RA descent. As soon as I said it; the cessna began to turn into us (left turn). It passed behind us and notified the PF. He continued to follow the RA until it stopped. ATC responded with 'he was supposed to remain north...turn heading 240; climb maintain 17;000 feet'. We complied and continued normal climb out. Our momentum carried us to within my estimate of 300 feet laterally to the cessna at about 1;800 feet MSL. Our TCAS RA descent rate up to 1;200 ft/min down to about 800 feet MSL before recovery and climbout.

Original NASA ASRS Text

Title: A319 First Officer reported descending during an RA response for traffic avoidance following a NMAC with a small aircraft while departing DCA.

Narrative: Departed Runway 01 normally. At 1;500 feet; received TA and noted PFD (Primary Flight Display) traffic at +600 feet; on the nose in close proximity. When I looked out I saw a Cessna 182/206 type aircraft 800 feet in front of us slightly right and 200 feet above us traveling north/northwest. I was looking at its left quarter. I told the PF (pilot flying) 'traffic visual straight ahead; turn left.' By then we received a descending RA. The PF immediately complied with both. I then notified ATC of traffic and RA descent. As soon as I said it; the Cessna began to turn into us (left turn). It passed behind us and notified the PF. He continued to follow the RA until it stopped. ATC responded with 'he was supposed to remain north...turn heading 240; climb maintain 17;000 feet'. We complied and continued normal climb out. Our momentum carried us to within my estimate of 300 feet laterally to the Cessna at about 1;800 feet MSL. Our TCAS RA descent rate up to 1;200 ft/min down to about 800 feet MSL before recovery and climbout.

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.

A319 first officer reported descending during an RA response for traffic avoidance following a near midair collision with a small aircraft while departing dca.