This past weekend, I took a work colleague flying in the Long-EZ. The local weather was very unsettled, with lots of thunderstorm shower systems springing up, moving irregularly across the countryside, and dying away again.
We took off from Dallas Executive and headed South-East. After about 20 minutes it became clear that a line of thunder showers was moving down into the area from the North-East.
Assuming (note fatal word there) that I was near Lancaster, I started looking for the airport, to land there and wait out the weather. I spotted what I thought was the airport, and headed towards it, intending to overfly and enter downwind for the active runway. I was broadcasting on the Lancaster CTAF. I was a little surprised that there was an aircraft in the pattern that did not seem to be broadcasting, but I have come across aircraft in local traffic patterns with no radio, so I put it to the back of my mind. I flew over the aircraft, which was flying the downwind portion of the pattern, turned back on a 45, entered downwind and followed the aircraft around the pattern to final. The aircraft touched down on the runway, and then came to a stop at midfield. By this time I was on short final, and I decided to execute a go-around, since I did not have any idea what the other plane was doing. I flew around the pattern again, gaily announcing my movements on the radio, landed, and rolled out.
While rolling out, the terrible truth began to dawn....the buildings did not really look like Lancaster airport. Then the "d'oh!" moment dawned, as I read the words "Midway" on the airport buildings. I had landed at Mid-Way Regional Airport, not Lancaster.
In fact, Mid-Way has the airport name in large letters on the ramp area, which I would have seen as I overflew the airport..except that at that point it was directly underneath the canard, and therefore invisible. After that point, I was more worried about navigating around the plane on downwind than I was about looking down, so I never saw the airport name. Because my GPS was turned off, I had no cockpit instrument "reality check" either.
No wonder I could not hear the aircraft in the pattern - they were using a different frequency, and no doubt cursing me for operating without a radio. The other plane in the pattern had landed behind me and parked. I parked the plane, apologized to my work colleague, and went off to eat crow and apologize to them. The plane was a Citabria with a woman instructor and her pupil. The pupil had actually owned a Vari-EZE for a while, but he sold it because he moved to a grass airstrip. I took the blame for the confusion, apologized and all was OK.
However, I learned a couple of valuable lessons:

1. Always keep the GPS on - it will provide a reality check on where you actually are, as opposed to where you think you are
2. When overflying, always look for airport identifiers on the ramp. It may save later embarrassment...

We did not stay very long at Midway, since the shower system (complete with lightning) was moving in rapidly. I fired up, and we left quickly, with a massive crosswind rapidly building. I flew out to the West and we landed at Cleburne, bought a soda, checked the weather at Dallas Executive, which was clear, and headed back to Dallas Executive over Joe Pool Lake, landing in dull conditions. As we arrived back at the hangar it began to rain.
An interesting afternoon, but not in the way that I would really have liked...