Narrative:

Shortly after departing amw; ia; we contacted des moines approach and were cleared direct flying cloud; climb 10000 ft. We acknowledged and continued our climb while performing the climb checklist. We were soon on course heading northbound; climbing to our assigned altitude. TCAS gave us a traffic alert as we were climbing through 6000 ft. I told the sic to query the controller about the traffic as we both scanned the sky in front of us searching for traffic. TCAS showed the other aircraft less than 500 ft above us and the position appears to be directly above us. I leaned forward to scan above us. The controller reports traffic less than 1 mi at 6500 ft. While he was saying this; the sic spotted the traffic in front of us and quickly disengaged the autoplt and arrested our climb as the other aircraft made an abrupt turn to the right. The sic then responded to the controller; 'that was close.' the pilot of the other aircraft (RV6) responded 'way too close.' the controller did not respond other than to give us a frequency change. Myself and the sic then discussed what had just transpired and we decided to write down what happened with the intent to file a NASA report after notifying our chief pilot. TCAS alerted us and gave us just enough time to avoid the other aircraft. The quick response of my sic after seeing the other aircraft prevented a midair. I believe it was 'controller error' as he was talking to both of us and failed to give traffic callouts to either of us. Supplemental information from acn 657357: the TCAS in our aircraft gave us a TA. The display showed the RV6 at our 12 O'clock position and 200 ft above us. Both the captain and I started looking for the aircraft and I immediately asked ATC if he could see traffic in front of us. ATC came back and replied we had traffic 12 O'clock position at 6500 ft MSL. Just before he finished his transmission; I saw the RV6 ahead of us; maybe 1500 ft ahead of us and 100 ft above us. The captain had not seen the aircraft at this time; so I took control of the aircraft; and pushed the nose down to avoid a collision. The RV6 also had to take evasive maneuvers. He climbed and rolled over us.

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Original NASA ASRS Text

Title: BE9L FLT CREW EXPERIENCED INFLT CONFLICT AT APPROX 6500 FT WITH VFR TFC ON THE SAME ATC FREQ REQUIRING EVASIVE ACTION OF BOTH ACFT.

Narrative: SHORTLY AFTER DEPARTING AMW; IA; WE CONTACTED DES MOINES APCH AND WERE CLRED DIRECT FLYING CLOUD; CLB 10000 FT. WE ACKNOWLEDGED AND CONTINUED OUR CLB WHILE PERFORMING THE CLB CHKLIST. WE WERE SOON ON COURSE HEADING NBOUND; CLBING TO OUR ASSIGNED ALT. TCAS GAVE US A TFC ALERT AS WE WERE CLBING THROUGH 6000 FT. I TOLD THE SIC TO QUERY THE CTLR ABOUT THE TFC AS WE BOTH SCANNED THE SKY IN FRONT OF US SEARCHING FOR TFC. TCAS SHOWED THE OTHER ACFT LESS THAN 500 FT ABOVE US AND THE POS APPEARS TO BE DIRECTLY ABOVE US. I LEANED FORWARD TO SCAN ABOVE US. THE CTLR RPTS TFC LESS THAN 1 MI AT 6500 FT. WHILE HE WAS SAYING THIS; THE SIC SPOTTED THE TFC IN FRONT OF US AND QUICKLY DISENGAGED THE AUTOPLT AND ARRESTED OUR CLB AS THE OTHER ACFT MADE AN ABRUPT TURN TO THE R. THE SIC THEN RESPONDED TO THE CTLR; 'THAT WAS CLOSE.' THE PLT OF THE OTHER ACFT (RV6) RESPONDED 'WAY TOO CLOSE.' THE CTLR DID NOT RESPOND OTHER THAN TO GIVE US A FREQ CHANGE. MYSELF AND THE SIC THEN DISCUSSED WHAT HAD JUST TRANSPIRED AND WE DECIDED TO WRITE DOWN WHAT HAPPENED WITH THE INTENT TO FILE A NASA RPT AFTER NOTIFYING OUR CHIEF PLT. TCAS ALERTED US AND GAVE US JUST ENOUGH TIME TO AVOID THE OTHER ACFT. THE QUICK RESPONSE OF MY SIC AFTER SEEING THE OTHER ACFT PREVENTED A MIDAIR. I BELIEVE IT WAS 'CTLR ERROR' AS HE WAS TALKING TO BOTH OF US AND FAILED TO GIVE TFC CALLOUTS TO EITHER OF US. SUPPLEMENTAL INFO FROM ACN 657357: THE TCAS IN OUR ACFT GAVE US A TA. THE DISPLAY SHOWED THE RV6 AT OUR 12 O'CLOCK POS AND 200 FT ABOVE US. BOTH THE CAPT AND I STARTED LOOKING FOR THE ACFT AND I IMMEDIATELY ASKED ATC IF HE COULD SEE TFC IN FRONT OF US. ATC CAME BACK AND REPLIED WE HAD TFC 12 O'CLOCK POS AT 6500 FT MSL. JUST BEFORE HE FINISHED HIS XMISSION; I SAW THE RV6 AHEAD OF US; MAYBE 1500 FT AHEAD OF US AND 100 FT ABOVE US. THE CAPT HAD NOT SEEN THE ACFT AT THIS TIME; SO I TOOK CTL OF THE ACFT; AND PUSHED THE NOSE DOWN TO AVOID A COLLISION. THE RV6 ALSO HAD TO TAKE EVASIVE MANEUVERS. HE CLBED AND ROLLED OVER US.

Data retrieved from NASA's ASRS site as of January 2009 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.