Narrative:

After takeoff from eagle, co, we began the IFR climb out (runway 25) procedure. The check pilot was monitoring navaids, radios, and backing up the pilot on assigned ATC procedures. The pilot (me) was flying the airplane and clearing. While rolling out on the 215 degree IFR departure procedure heading, I was also watching the rapidly rising terrain on the right. As I rolled out, I saw an unannounced white single engine cessna at my 10 O'clock and very close. I rolled right and the cessna went slightly below and slightly left of my aircraft. Tower had advised us of another aircraft, which we were watching. However, the single engine cessna was not announced by tower. Visibility was excellent. The single engine cessna was in a descent. We were in a climb clearing terrain and watching other announced traffic. I do not know if the single engine cessna saw me. The check pilot called eagle tower and confirmed we would file a formal report after our flight. Supplemental information from acn 412612: while verifying the takeoff/climb checks were completed, I heard an exclamation from the PF (in the left seat). As I looked up, I saw the left windscreen filled with the sight of another aircraft in extremely close proximity with a collision appearing imminent. The PF was already rolling the aircraft to the right with full control travel. The collision was avoided and the PF returned the aircraft to the previous heading of 215 degrees. The king air that we had been advised about was sighted immediately after the near midair collision, it was well clear of our aircraft and no factor at that time. I reported the near midair collision to the tower. The controller acknowledged the report and then contacted the king air to advise of a single engine cessna 100 ft below the king air. Relevant factors: non radar environment. Elevated workload period. Mountainous terrain. Tower advised us of only one inbound aircraft. Potentially confusing ATC instructions to arriving southeast aircraft -- a later telephone conversation with tower controller indicated that the pilot of the other aircraft had been instructed to report entering a midfield right downwind in the traffic pattern. The terrain and direction of flight would make this a difficult task to complete (without crossing the departure corridor) unless the pilot was familiar with the airport and ATC procedures at ege.

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Original NASA ASRS Text

Title: CESSNA CITATION AND SINGLE ENG CESSNA HAD NMAC 2 MI W OF EGE ARPT.

Narrative: AFTER TKOF FROM EAGLE, CO, WE BEGAN THE IFR CLBOUT (RWY 25) PROC. THE CHK PLT WAS MONITORING NAVAIDS, RADIOS, AND BACKING UP THE PLT ON ASSIGNED ATC PROCS. THE PLT (ME) WAS FLYING THE AIRPLANE AND CLRING. WHILE ROLLING OUT ON THE 215 DEG IFR DEP PROC HDG, I WAS ALSO WATCHING THE RAPIDLY RISING TERRAIN ON THE R. AS I ROLLED OUT, I SAW AN UNANNOUNCED WHITE SINGLE ENG CESSNA AT MY 10 O'CLOCK AND VERY CLOSE. I ROLLED R AND THE CESSNA WENT SLIGHTLY BELOW AND SLIGHTLY L OF MY ACFT. TWR HAD ADVISED US OF ANOTHER ACFT, WHICH WE WERE WATCHING. HOWEVER, THE SINGLE ENG CESSNA WAS NOT ANNOUNCED BY TWR. VISIBILITY WAS EXCELLENT. THE SINGLE ENG CESSNA WAS IN A DSCNT. WE WERE IN A CLB CLRING TERRAIN AND WATCHING OTHER ANNOUNCED TFC. I DO NOT KNOW IF THE SINGLE ENG CESSNA SAW ME. THE CHK PLT CALLED EAGLE TWR AND CONFIRMED WE WOULD FILE A FORMAL RPT AFTER OUR FLT. SUPPLEMENTAL INFO FROM ACN 412612: WHILE VERIFYING THE TKOF/CLB CHKS WERE COMPLETED, I HEARD AN EXCLAMATION FROM THE PF (IN THE L SEAT). AS I LOOKED UP, I SAW THE L WINDSCREEN FILLED WITH THE SIGHT OF ANOTHER ACFT IN EXTREMELY CLOSE PROX WITH A COLLISION APPEARING IMMINENT. THE PF WAS ALREADY ROLLING THE ACFT TO THE R WITH FULL CTL TRAVEL. THE COLLISION WAS AVOIDED AND THE PF RETURNED THE ACFT TO THE PREVIOUS HDG OF 215 DEGS. THE KING AIR THAT WE HAD BEEN ADVISED ABOUT WAS SIGHTED IMMEDIATELY AFTER THE NMAC, IT WAS WELL CLR OF OUR ACFT AND NO FACTOR AT THAT TIME. I RPTED THE NMAC TO THE TWR. THE CTLR ACKNOWLEDGED THE RPT AND THEN CONTACTED THE KING AIR TO ADVISE OF A SINGLE ENG CESSNA 100 FT BELOW THE KING AIR. RELEVANT FACTORS: NON RADAR ENVIRONMENT. ELEVATED WORKLOAD PERIOD. MOUNTAINOUS TERRAIN. TWR ADVISED US OF ONLY ONE INBOUND ACFT. POTENTIALLY CONFUSING ATC INSTRUCTIONS TO ARRIVING SE ACFT -- A LATER TELEPHONE CONVERSATION WITH TWR CTLR INDICATED THAT THE PLT OF THE OTHER ACFT HAD BEEN INSTRUCTED TO RPT ENTERING A MIDFIELD R DOWNWIND IN THE TFC PATTERN. THE TERRAIN AND DIRECTION OF FLT WOULD MAKE THIS A DIFFICULT TASK TO COMPLETE (WITHOUT XING THE DEP CORRIDOR) UNLESS THE PLT WAS FAMILIAR WITH THE ARPT AND ATC PROCS AT EGE.

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.