Narrative:

During the takeoff phase of a touch and go on runway 30L, an unknown aircraft was observed crossing from right to left in front of us. Upon seeing the aircraft, we initiated a 50 degree bank turn to the right to avoid the aircraft. No radio calls had been observed from any traffic other than a learjet holding short at runway 30L for departure, and another company seminole who was taxiing to the ramp. I discussed the situation with the other instructor afterwards who saw the aircraft (described as a cessna 210 centurion) takeoff off runway 22 (with no runway lighting on), without using strobe lights or a landing light. He also observed no radio calls from the aircraft involved.

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Original NASA ASRS Text

Title: BEECHCRAFT SEMINOLE FLC HAS TO TAKE EVASIVE ACTION DURING A TOUCH AND GO LNDG DUE TO ANOTHER ACFT PASSING IN FRONT OF THEIR ACFT AT CPS.

Narrative: DURING THE TKOF PHASE OF A TOUCH AND GO ON RWY 30L, AN UNKNOWN ACFT WAS OBSERVED XING FROM R TO L IN FRONT OF US. UPON SEEING THE ACFT, WE INITIATED A 50 DEG BANK TURN TO THE R TO AVOID THE ACFT. NO RADIO CALLS HAD BEEN OBSERVED FROM ANY TFC OTHER THAN A LEARJET HOLDING SHORT AT RWY 30L FOR DEP, AND ANOTHER COMPANY SEMINOLE WHO WAS TAXIING TO THE RAMP. I DISCUSSED THE SIT WITH THE OTHER INSTRUCTOR AFTERWARDS WHO SAW THE ACFT (DESCRIBED AS A CESSNA 210 CENTURION) TKOF OFF RWY 22 (WITH NO RWY LIGHTING ON), WITHOUT USING STROBE LIGHTS OR A LNDG LIGHT. HE ALSO OBSERVED NO RADIO CALLS FROM THE ACFT INVOLVED.

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.