Narrative:

We were departing I69 airport at the same time aircraft participating in a special event were arriving, and overflying the taxiway west of runway 4/22. While taxiing for departure, observers east of runway radioed and inquired about our departure. We were advised of the special event traffic, and a recommended left turnout for a north departure was received from one of the observers. Following our run-up, the PF announced his intention to depart, pulled onto runway 22, and began the takeoff roll. The ground observer with the radio advised our aircraft that a special event participant was inbound 'head on' to our departure path. The PF pointed out the traffic, then right of our departure path and over the taxiway (as we were informed would happen). PF elected to continue the takeoff roll, as the traffic was in sight and believed to be no factor. I also observed the incoming aircraft and concurred with his assessment that it would not be a factor. PF did not relay this information to the ground observers, and I did not have a push to talk switch to handle this task for him. From the viewpoint of the ground observers, the aircraft 'nearly collided,' when in fact we had the arriving 'fly-by' traffic in sight at all times, and never came so close as to create a hazard. Contributing factors: airport should have been notamed closed to allow the multiple and unusual 'fly-by's to be performed. Additional factor: some unknown person acting as ATC at an uncontrolled airfield.

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Original NASA ASRS Text

Title: PAX IN A PA28R-200, WHO IS A FLT INSTRUCTOR, WAS DEPARTING RWY 22 AT A FIELD WHERE SPECIAL EVENT PLTS WERE ARRIVING AND MAKING FLY-BY'S WHICH BROUGHT THEM HEAD ON TO THIS TFC. A GND OBSERVER CALLED OUT THIS TFC TO THE RPTR CREW BUT THEY CONTINUED THEIR TKOF RESULTING IN AN NMAC.

Narrative: WE WERE DEPARTING I69 ARPT AT THE SAME TIME ACFT PARTICIPATING IN A SPECIAL EVENT WERE ARRIVING, AND OVERFLYING THE TXWY W OF RWY 4/22. WHILE TAXIING FOR DEP, OBSERVERS E OF RWY RADIOED AND INQUIRED ABOUT OUR DEP. WE WERE ADVISED OF THE SPECIAL EVENT TFC, AND A RECOMMENDED L TURNOUT FOR A N DEP WAS RECEIVED FROM ONE OF THE OBSERVERS. FOLLOWING OUR RUN-UP, THE PF ANNOUNCED HIS INTENTION TO DEPART, PULLED ONTO RWY 22, AND BEGAN THE TKOF ROLL. THE GND OBSERVER WITH THE RADIO ADVISED OUR ACFT THAT A SPECIAL EVENT PARTICIPANT WAS INBOUND 'HEAD ON' TO OUR DEP PATH. THE PF POINTED OUT THE TFC, THEN R OF OUR DEP PATH AND OVER THE TXWY (AS WE WERE INFORMED WOULD HAPPEN). PF ELECTED TO CONTINUE THE TKOF ROLL, AS THE TFC WAS IN SIGHT AND BELIEVED TO BE NO FACTOR. I ALSO OBSERVED THE INCOMING ACFT AND CONCURRED WITH HIS ASSESSMENT THAT IT WOULD NOT BE A FACTOR. PF DID NOT RELAY THIS INFO TO THE GND OBSERVERS, AND I DID NOT HAVE A PUSH TO TALK SWITCH TO HANDLE THIS TASK FOR HIM. FROM THE VIEWPOINT OF THE GND OBSERVERS, THE ACFT 'NEARLY COLLIDED,' WHEN IN FACT WE HAD THE ARRIVING 'FLY-BY' TFC IN SIGHT AT ALL TIMES, AND NEVER CAME SO CLOSE AS TO CREATE A HAZARD. CONTRIBUTING FACTORS: ARPT SHOULD HAVE BEEN NOTAMED CLOSED TO ALLOW THE MULTIPLE AND UNUSUAL 'FLY-BY'S TO BE PERFORMED. ADDITIONAL FACTOR: SOME UNKNOWN PERSON ACTING AS ATC AT AN UNCTLED AIRFIELD.

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.