Narrative:

We (aircraft X) were climbing out of dca on an IFR flight plan in VMC. We were assigned a heading and climb to 9000 ft. I called traffic at 12 O'clock position and called up TCASII display manually. Traffic was 1500-2000 ft higher than us and turning to the right across our nose. We shallowed our climb in response to TCASII TA/RA. An air carrier Y flight called dca radar and said he was in a TCASII RA climb to 10000 ft. Before our RA maneuver, ATC called traffic at 12 O'clock position and at 9000 ft (same altitude as us). I said 'traffic in sight.' I was not told to 'maintain visual separation' or any words to that effect. The air carrier Y complained to ATC about our close proximity and his TCASII RA. ATC said we (aircraft X) were on a river departure and were maintaining visual separation. Fortunately it was VMC and I saw the crossing traffic before TCASII went to TA/RA. There was a breakdown in communications between ATC, us, and the air carrier flight. Both flts were assigned 9000 ft MSL on converging radar vectors. TCASII worked.

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Original NASA ASRS Text

Title: DEPARTING CPR JET AND ARRIVING ACR FLC'S INITIATE TCASII EVASIVE MANEUVER WHEN COMING INTO CONFLICT.

Narrative: WE (ACFT X) WERE CLBING OUT OF DCA ON AN IFR FLT PLAN IN VMC. WE WERE ASSIGNED A HDG AND CLB TO 9000 FT. I CALLED TFC AT 12 O'CLOCK POS AND CALLED UP TCASII DISPLAY MANUALLY. TFC WAS 1500-2000 FT HIGHER THAN US AND TURNING TO THE R ACROSS OUR NOSE. WE SHALLOWED OUR CLB IN RESPONSE TO TCASII TA/RA. AN ACR Y FLT CALLED DCA RADAR AND SAID HE WAS IN A TCASII RA CLB TO 10000 FT. BEFORE OUR RA MANEUVER, ATC CALLED TFC AT 12 O'CLOCK POS AND AT 9000 FT (SAME ALT AS US). I SAID 'TFC IN SIGHT.' I WAS NOT TOLD TO 'MAINTAIN VISUAL SEPARATION' OR ANY WORDS TO THAT EFFECT. THE ACR Y COMPLAINED TO ATC ABOUT OUR CLOSE PROX AND HIS TCASII RA. ATC SAID WE (ACFT X) WERE ON A RIVER DEP AND WERE MAINTAINING VISUAL SEPARATION. FORTUNATELY IT WAS VMC AND I SAW THE XING TFC BEFORE TCASII WENT TO TA/RA. THERE WAS A BREAKDOWN IN COMS BTWN ATC, US, AND THE ACR FLT. BOTH FLTS WERE ASSIGNED 9000 FT MSL ON CONVERGING RADAR VECTORS. TCASII WORKED.

Data retrieved from NASA's ASRS site as of July 2007 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.