Narrative:

I was preparing to depart on a cross country flight from a non twred airport. The windsocks and ASOS broadcast both favored runway 21 (wind 170 degrees at 7 KTS). (This runway is posted to use runway 3 in calm or crosswind conditions.) runway is 4200 ft long. 2 aircraft landed on runway 3 as I did my run-up. I was at the run-up area at the north end of runway 3/21. (1 of those 2 landing aircraft was the seneca involved in this.) when I was ready to takeoff, I taxied to the hold line and visually scanned for traffic and also monitored radio CTAF/unicom. No one was in the pattern and the seneca was taxiing southward, on the opposite side of the runway, on the taxiway. I announced by radio that I was entering the 'preferred runway 21' and began my takeoff. As I got close to lift-off speed, the seneca taxied into position on runway 3,right in my path (but at the far end of the runway). I called 'seneca, cessna is taking off on runway 21' and the instructor called back 'runway 3 is the active.' I said 'this is a non controled airport and the winds favor runway 21.' the instructor called back and said 'you're going to kill somebody, we've been using runway 3 for 20 mins.' as I called the seneca the first time, I had already decided to proceed with takeoff as I was nearly at flying speed. I lifted off, banked/turned slightly left (into the wind) and flew a normal departure from there. I believe the seneca was crewed by a non-native speaker of english receiving instruction from a young CFI. The seneca did announce it was entering runway 3 -- by that time I was already rolling down runway 21. All radio calls up to that point were in a heavily accented voice. After I lifted off and called to alert the seneca to my presence, another voice (the CFI, I presume) took over the radio. I believe my decision to use runway 21 was correct given the wind. I also believe I acted properly in visually clearing the area and making a self-announce radio call before entering the runway. I believe this incident was caused by an inattentive student (advanced student multi-engine) and flight instructor who did not pay attention to my radio call, did not look for traffic on the runway before taxiing into position and, did not bother to check the meteorological conditions, preferring to practice takeoffs and lndgs downwind, because other aircraft had been doing the same thing. After I made the call to tell the seneca I was taking off, the seneca held its position (instead of proceeding with the takeoff). We were never very close to each other and at no time did I doubt my ability to avoid a collision. I do regret having participated in even a brief debate over whose mistake it was, over the radio. But nobody used profanity.

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Original NASA ASRS Text

Title: A POTENTIAL CONFLICT ENSUES AT A NON TWR ARPT WHEN A C152 PVT PLT TAKES OFF ON RWY 21 WHICH WAS FAVORED BY THE WIND. A SENECA PA34 TAKES POS AT THE OTHER END, RWY 3. BOTH PLTS WERE SELF ANNOUNCING BUT THE PA34 CREW FAILED TO HEAR THE C152'S CALL.

Narrative: I WAS PREPARING TO DEPART ON A XCOUNTRY FLT FROM A NON TWRED ARPT. THE WINDSOCKS AND ASOS BROADCAST BOTH FAVORED RWY 21 (WIND 170 DEGS AT 7 KTS). (THIS RWY IS POSTED TO USE RWY 3 IN CALM OR XWIND CONDITIONS.) RWY IS 4200 FT LONG. 2 ACFT LANDED ON RWY 3 AS I DID MY RUN-UP. I WAS AT THE RUN-UP AREA AT THE N END OF RWY 3/21. (1 OF THOSE 2 LNDG ACFT WAS THE SENECA INVOLVED IN THIS.) WHEN I WAS READY TO TKOF, I TAXIED TO THE HOLD LINE AND VISUALLY SCANNED FOR TFC AND ALSO MONITORED RADIO CTAF/UNICOM. NO ONE WAS IN THE PATTERN AND THE SENECA WAS TAXIING SOUTHWARD, ON THE OPPOSITE SIDE OF THE RWY, ON THE TXWY. I ANNOUNCED BY RADIO THAT I WAS ENTERING THE 'PREFERRED RWY 21' AND BEGAN MY TKOF. AS I GOT CLOSE TO LIFT-OFF SPD, THE SENECA TAXIED INTO POS ON RWY 3,RIGHT IN MY PATH (BUT AT THE FAR END OF THE RWY). I CALLED 'SENECA, CESSNA IS TAKING OFF ON RWY 21' AND THE INSTRUCTOR CALLED BACK 'RWY 3 IS THE ACTIVE.' I SAID 'THIS IS A NON CTLED ARPT AND THE WINDS FAVOR RWY 21.' THE INSTRUCTOR CALLED BACK AND SAID 'YOU'RE GOING TO KILL SOMEBODY, WE'VE BEEN USING RWY 3 FOR 20 MINS.' AS I CALLED THE SENECA THE FIRST TIME, I HAD ALREADY DECIDED TO PROCEED WITH TKOF AS I WAS NEARLY AT FLYING SPD. I LIFTED OFF, BANKED/TURNED SLIGHTLY L (INTO THE WIND) AND FLEW A NORMAL DEP FROM THERE. I BELIEVE THE SENECA WAS CREWED BY A NON-NATIVE SPEAKER OF ENGLISH RECEIVING INSTRUCTION FROM A YOUNG CFI. THE SENECA DID ANNOUNCE IT WAS ENTERING RWY 3 -- BY THAT TIME I WAS ALREADY ROLLING DOWN RWY 21. ALL RADIO CALLS UP TO THAT POINT WERE IN A HEAVILY ACCENTED VOICE. AFTER I LIFTED OFF AND CALLED TO ALERT THE SENECA TO MY PRESENCE, ANOTHER VOICE (THE CFI, I PRESUME) TOOK OVER THE RADIO. I BELIEVE MY DECISION TO USE RWY 21 WAS CORRECT GIVEN THE WIND. I ALSO BELIEVE I ACTED PROPERLY IN VISUALLY CLRING THE AREA AND MAKING A SELF-ANNOUNCE RADIO CALL BEFORE ENTERING THE RWY. I BELIEVE THIS INCIDENT WAS CAUSED BY AN INATTENTIVE STUDENT (ADVANCED STUDENT MULTI-ENG) AND FLT INSTRUCTOR WHO DID NOT PAY ATTN TO MY RADIO CALL, DID NOT LOOK FOR TFC ON THE RWY BEFORE TAXIING INTO POS AND, DID NOT BOTHER TO CHK THE METEOROLOGICAL CONDITIONS, PREFERRING TO PRACTICE TKOFS AND LNDGS DOWNWIND, BECAUSE OTHER ACFT HAD BEEN DOING THE SAME THING. AFTER I MADE THE CALL TO TELL THE SENECA I WAS TAKING OFF, THE SENECA HELD ITS POS (INSTEAD OF PROCEEDING WITH THE TKOF). WE WERE NEVER VERY CLOSE TO EACH OTHER AND AT NO TIME DID I DOUBT MY ABILITY TO AVOID A COLLISION. I DO REGRET HAVING PARTICIPATED IN EVEN A BRIEF DEBATE OVER WHOSE MISTAKE IT WAS, OVER THE RADIO. BUT NOBODY USED PROFANITY.

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.