Narrative:

I mistakenly entered the moore (aye) control zone and landed. I thought I was landing at fitchburg (fit) airport. Moore has 1 runway, runway 14/32. Fitchburg was also using runway 14/32. These 2 airports are approximately 10 mi apart. How the problem arose: I was flying outbound from the concord VOR when I was found to change my course because of low clouds. I flew direct to the concord VOR and then outbound on the 205 degree radial. A short time later I tuned in the fitchburg NDB. I tuned the ADF to ant to identify the station. I did not turn it back to ADF from ant. The bearing needle on the ADF was now inoperable. My VOR was telling me I was centered on the 205 degree radial and my NDB was telling me to turn to the east. When I had what I thought was fitchburg airport in sight, I turned towards it. This was the same direction my ADF needle was pointing to. Fitchburg unicom informed me runway 14 was in use. I self announced my position in the pattern and landed. When I was over the numbers on final I realized that I was at the wrong airport. The control tower was the wrong color, fitchburg has a tower but it is not used. There were no aircraft on the ramp. Contributing factors: my overlooking the ADF needle not moving because it was in the ant mode. Believing my VOR navigation was incorrect. Not using any pilotage for navigation. When I was in the pattern I was looking for an aircraft which was on final at fitchburg. I did not give the airport a good look. Except for runway 14/32 and one taxiway, all other txwys and the 2 closed runways were snow covered. If they had not been snow covered I may have noticed the difference between the 2 airports. Make sure all navigation equipment is operating correctly. Overfly the airport and visually check landmarks. If there is a conflict, such as I had between VOR versus NDB, look at the situation a little more closely.

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Original NASA ASRS Text

Title: WRONG ARPT APCH LNDG. UNAUTH LNDG. LNDG WITHOUT CLRNC.

Narrative: I MISTAKENLY ENTERED THE MOORE (AYE) CTL ZONE AND LANDED. I THOUGHT I WAS LNDG AT FITCHBURG (FIT) ARPT. MOORE HAS 1 RWY, RWY 14/32. FITCHBURG WAS ALSO USING RWY 14/32. THESE 2 ARPTS ARE APPROX 10 MI APART. HOW THE PROB AROSE: I WAS FLYING OUTBOUND FROM THE CONCORD VOR WHEN I WAS FOUND TO CHANGE MY COURSE BECAUSE OF LOW CLOUDS. I FLEW DIRECT TO THE CONCORD VOR AND THEN OUTBOUND ON THE 205 DEG RADIAL. A SHORT TIME LATER I TUNED IN THE FITCHBURG NDB. I TUNED THE ADF TO ANT TO IDENT THE STATION. I DID NOT TURN IT BACK TO ADF FROM ANT. THE BEARING NEEDLE ON THE ADF WAS NOW INOPERABLE. MY VOR WAS TELLING ME I WAS CTRED ON THE 205 DEG RADIAL AND MY NDB WAS TELLING ME TO TURN TO THE E. WHEN I HAD WHAT I THOUGHT WAS FITCHBURG ARPT IN SIGHT, I TURNED TOWARDS IT. THIS WAS THE SAME DIRECTION MY ADF NEEDLE WAS POINTING TO. FITCHBURG UNICOM INFORMED ME RWY 14 WAS IN USE. I SELF ANNOUNCED MY POS IN THE PATTERN AND LANDED. WHEN I WAS OVER THE NUMBERS ON FINAL I REALIZED THAT I WAS AT THE WRONG ARPT. THE CTL TWR WAS THE WRONG COLOR, FITCHBURG HAS A TWR BUT IT IS NOT USED. THERE WERE NO ACFT ON THE RAMP. CONTRIBUTING FACTORS: MY OVERLOOKING THE ADF NEEDLE NOT MOVING BECAUSE IT WAS IN THE ANT MODE. BELIEVING MY VOR NAV WAS INCORRECT. NOT USING ANY PILOTAGE FOR NAV. WHEN I WAS IN THE PATTERN I WAS LOOKING FOR AN ACFT WHICH WAS ON FINAL AT FITCHBURG. I DID NOT GIVE THE ARPT A GOOD LOOK. EXCEPT FOR RWY 14/32 AND ONE TXWY, ALL OTHER TXWYS AND THE 2 CLOSED RWYS WERE SNOW COVERED. IF THEY HAD NOT BEEN SNOW COVERED I MAY HAVE NOTICED THE DIFFERENCE BTWN THE 2 ARPTS. MAKE SURE ALL NAV EQUIP IS OPERATING CORRECTLY. OVERFLY THE ARPT AND VISUALLY CHK LANDMARKS. IF THERE IS A CONFLICT, SUCH AS I HAD BTWN VOR VERSUS NDB, LOOK AT THE SIT A LITTLE MORE CLOSELY.

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.