Narrative:

I landed at buy on runway 6, the winds favoring that runway. For 5 mins prior to landing, I observed no traffic taking off from buy, so I used the winds (ASOS) to determine landing runway. Landed without incident. Subsequent to landing, I proceeded to taxi back on taxiway a to runway 6. There was 1 C172 in front and 1 C172 in the run-up area. Unknown to me at the time, there was a third C172 that had taxied to runway 24. #1 C172 took off runway 6. I taxied into position after announcing my intentions on CTAF. During the takeoff roll, I saw #3 C172 taking off in the opposite direction. It was airborne fast enough to clear me by about 20 ft. When I asked unicom who it was, I was told it was #3 C172. 2 aircraft said they heard my radio call, but not #3 C172. The pilot of #3 C172 claimed to make a call and not to have heard mine. 2 factors appeared involved: 1) possible pilot/equipment failure at/on #3 C172, and 2) buy's runway has a hump in the middle, preventing 1 end seeing the other. Corrective actions: level runway and determine radio failure cause.

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Original NASA ASRS Text

Title: PLT OF PA28 ON TKOF ROLL AT UNCTLED ARPT NEARLY STRUCK BY AIRBORNE C172 DEPARTING FROM OPPOSITE DIRECTION ON SAME RWY.

Narrative: I LANDED AT BUY ON RWY 6, THE WINDS FAVORING THAT RWY. FOR 5 MINS PRIOR TO LNDG, I OBSERVED NO TFC TAKING OFF FROM BUY, SO I USED THE WINDS (ASOS) TO DETERMINE LNDG RWY. LANDED WITHOUT INCIDENT. SUBSEQUENT TO LNDG, I PROCEEDED TO TAXI BACK ON TXWY A TO RWY 6. THERE WAS 1 C172 IN FRONT AND 1 C172 IN THE RUN-UP AREA. UNKNOWN TO ME AT THE TIME, THERE WAS A THIRD C172 THAT HAD TAXIED TO RWY 24. #1 C172 TOOK OFF RWY 6. I TAXIED INTO POS AFTER ANNOUNCING MY INTENTIONS ON CTAF. DURING THE TKOF ROLL, I SAW #3 C172 TAKING OFF IN THE OPPOSITE DIRECTION. IT WAS AIRBORNE FAST ENOUGH TO CLR ME BY ABOUT 20 FT. WHEN I ASKED UNICOM WHO IT WAS, I WAS TOLD IT WAS #3 C172. 2 ACFT SAID THEY HEARD MY RADIO CALL, BUT NOT #3 C172. THE PLT OF #3 C172 CLAIMED TO MAKE A CALL AND NOT TO HAVE HEARD MINE. 2 FACTORS APPEARED INVOLVED: 1) POSSIBLE PLT/EQUIP FAILURE AT/ON #3 C172, AND 2) BUY'S RWY HAS A HUMP IN THE MIDDLE, PREVENTING 1 END SEEING THE OTHER. CORRECTIVE ACTIONS: LEVEL RWY AND DETERMINE RADIO FAILURE CAUSE.

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.