Narrative:

On the way to the runway the pilot was listening to an AWOS test frequency. When he switched back to unicom frequency, he tuned in wrong frequency 122.20. His intention was to tune 122.80. It was bright sunlight, and it was hard to see the #south on the display. He reported that he was taxiing, and asked for traffic advisories. Naturally, nobody answered, which is really common on a unicom operated airport. During the runup he used the checklist, but must have missed a point, and that was radio set. I did not catch this during the runup. After the runup I discussed with the the importance of using checklists. After looking for traffic, we entered the active runway 20 and took off. The pilot reported on the radio everything he was doing. After takeoff, we saw an aircraft doing go around, high above us and to our right side. That was an light transport from air carrier operation who probably was making a straight in on 20. We had not seen this aircraft before takeoff. We checked the radio and discovered that the wrong frequency was tuned in. We decided to go back and land, to explain and apologize to the captain of the air carrier. I must admit that I did not pay enough attention to what the pilot was doing during the runup. The reason was that I was a passenger on this flight. What to do to prevent this from happening in the future is to reinforce that the pilots and students take their time and follow the checklist step for step before, during and after every flight, and turn a complete 90 degree turn to each side before entering the runway.

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Original NASA ASRS Text

Title: GA SMA FAILED TO SEE AN ACR LTT ON SHORT FINAL AND TAXIED ONTO RWY FORCING THE ACR TO GO AROUND.

Narrative: ON THE WAY TO THE RWY THE PLT WAS LISTENING TO AN AWOS TEST FREQ. WHEN HE SWITCHED BACK TO UNICOM FREQ, HE TUNED IN WRONG FREQ 122.20. HIS INTENTION WAS TO TUNE 122.80. IT WAS BRIGHT SUNLIGHT, AND IT WAS HARD TO SEE THE #S ON THE DISPLAY. HE RPTED THAT HE WAS TAXIING, AND ASKED FOR TFC ADVISORIES. NATURALLY, NOBODY ANSWERED, WHICH IS REALLY COMMON ON A UNICOM OPERATED ARPT. DURING THE RUNUP HE USED THE CHKLIST, BUT MUST HAVE MISSED A POINT, AND THAT WAS RADIO SET. I DID NOT CATCH THIS DURING THE RUNUP. AFTER THE RUNUP I DISCUSSED WITH THE THE IMPORTANCE OF USING CHKLISTS. AFTER LOOKING FOR TFC, WE ENTERED THE ACTIVE RWY 20 AND TOOK OFF. THE PLT RPTED ON THE RADIO EVERYTHING HE WAS DOING. AFTER TKOF, WE SAW AN ACFT DOING GAR, HIGH ABOVE US AND TO OUR RIGHT SIDE. THAT WAS AN LTT FROM ACR OPERATION WHO PROBABLY WAS MAKING A STRAIGHT IN ON 20. WE HAD NOT SEEN THIS ACFT BEFORE TKOF. WE CHKED THE RADIO AND DISCOVERED THAT THE WRONG FREQ WAS TUNED IN. WE DECIDED TO GO BACK AND LAND, TO EXPLAIN AND APOLOGIZE TO THE CAPT OF THE ACR. I MUST ADMIT THAT I DID NOT PAY ENOUGH ATTN TO WHAT THE PLT WAS DOING DURING THE RUNUP. THE REASON WAS THAT I WAS A PAX ON THIS FLT. WHAT TO DO TO PREVENT THIS FROM HAPPENING IN THE FUTURE IS TO REINFORCE THAT THE PLTS AND STUDENTS TAKE THEIR TIME AND FOLLOW THE CHKLIST STEP FOR STEP BEFORE, DURING AND AFTER EVERY FLT, AND TURN A COMPLETE 90 DEG TURN TO EACH SIDE BEFORE ENTERING THE RWY.

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.