Phenom 300 flight crew reported a near midair collision on departure while following ATC instruction...

Attributes
ACN	1536668
Time
Date	201804
Local Time Of Day	1201-1800
Place
Locale Reference	PDK.Airport
State Reference	GA
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	EMB-505 / Phenom 300
Operating Under FAR Part	Part 91
Flight Phase	Initial Climb
Route In Use	Vectors
Flight Plan	IFR
Aircraft 2
Make Model Name	Cirrus Aircraft Undifferentiated
Operating Under FAR Part	Part 91
Flight Phase	Climb
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 80 Flight Crew Total 11000 Flight Crew Type 1150
Person 2
Function	Pilot Flying First Officer
Qualification	Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) Flight Crew Flight Engineer Flight Crew Flight Instructor Flight Crew Instrument
Experience	Flight Crew Last 90 Days 90 Flight Crew Total 24000 Flight Crew Type 1000
Events
Anomaly	ATC Issue All Types Conflict NMAC Deviation - Altitude Excursion From Assigned Altitude Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy
Miss Distance	Horizontal 400 Vertical 200

Narrative:

We were departing runway 21L at pdk. With our takeoff clearance we were given a heading of 270 and a traffic call. I read back all except I 'rogered' the traffic instead of saying 'looking.'after takeoff; cleaning up; after turning to 270 the tower asked again if we had the traffic; and I said no that we were looking. We did see the traffic on TCAS but never saw him due to maybe sun angle; not sure. Regardless the tower gave us a 10 degree heading change that turned out to be pretty important. Also about that time we received an RA climb command as we approached level off at 3;000 feet.once we got the RA command I mentioned to the tower that we finally had the traffic in sight as we climbed to 3;800 feet or so with 3;000 feet assigned; and was switching to departure as I wanted to talk with the controllers of the airspace that we had just entered. We switched to departure and immediately reported the RA.after landing at final destination we called the tower and debriefed the incident with them. Our point was that even had we seen the aircraft sooner we would have had to ask to deviate or still had an RA. From what we saw; the traffic (a cirrus) was climbing and was very close to our altitude at 3;000 feet.

Original NASA ASRS Text

Title: Phenom 300 flight crew reported a NMAC on departure while following ATC instructions.

Narrative: We were departing runway 21L at PDK. With our takeoff clearance we were given a heading of 270 and a traffic call. I read back all except I 'rogered' the traffic instead of saying 'looking.'After takeoff; cleaning up; after turning to 270 the tower asked again if we had the traffic; and I said no that we were looking. We did see the traffic on TCAS but never saw him due to maybe sun angle; not sure. Regardless the tower gave us a 10 degree heading change that turned out to be pretty important. Also about that time we received an RA Climb command as we approached level off at 3;000 feet.Once we got the RA command I mentioned to the tower that we finally had the traffic in sight as we climbed to 3;800 feet or so with 3;000 feet assigned; and was switching to departure as I wanted to talk with the controllers of the airspace that we had just entered. We switched to departure and immediately reported the RA.After landing at final destination we called the tower and debriefed the incident with them. Our point was that even had we seen the aircraft sooner we would have had to ask to deviate or still had an RA. From what we saw; the traffic (a Cirrus) was climbing and was very close to our altitude at 3;000 feet.

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.

Phenom 300 flight crew reported a near midair collision on departure while following ATC instructions.