Narrative:

I made a mistake, but an ATC nonstandard procedure contributed. I was told I was the second airplane to make the same mistake in 30 mins, but ATC didn't seem to have a clue why. I was instructed by ATIS to expect runway 23L and told by approach to enter a right base to runway 23L which I acknowledged. I was on a heading of 80 degrees from mem from the west. Upon my shift to tower, my first and only contact was 'right base, cleared to land runway 23L.' when I was still 3 NM southwest, I acknowledged right base runway 23L. My path put me in a right downwind on the north side of runway 23R. For airport orientation I was looking at the 'flight guide' publication of tys which depicts a right base to runway 23R and a left base to runway 23L. This is the customary scheme in my experience for airports with parallel runways. Therefore when I did a right base from a right downwind outside runway 23R, habit took over and I, in error, turned on a fairly long final to runway 23R, the nearest runway, instead of crossing longer on right base to runway 23L. Although I made a fairly long final approach clearly lined to runway 23R, tower never mentioned my mistake until I was safely on the ground. Fortunately there was no incident.

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Original NASA ASRS Text

Title: SMT MAKES R APCH FOR L RWY, LANDS ON WRONG RWY.

Narrative: I MADE A MISTAKE, BUT AN ATC NONSTANDARD PROC CONTRIBUTED. I WAS TOLD I WAS THE SECOND AIRPLANE TO MAKE THE SAME MISTAKE IN 30 MINS, BUT ATC DIDN'T SEEM TO HAVE A CLUE WHY. I WAS INSTRUCTED BY ATIS TO EXPECT RWY 23L AND TOLD BY APCH TO ENTER A R BASE TO RWY 23L WHICH I ACKNOWLEDGED. I WAS ON A HDG OF 80 DEGS FROM MEM FROM THE W. UPON MY SHIFT TO TWR, MY FIRST AND ONLY CONTACT WAS 'R BASE, CLRED TO LAND RWY 23L.' WHEN I WAS STILL 3 NM SW, I ACKNOWLEDGED R BASE RWY 23L. MY PATH PUT ME IN A R DOWNWIND ON THE N SIDE OF RWY 23R. FOR ARPT ORIENTATION I WAS LOOKING AT THE 'FLT GUIDE' PUB OF TYS WHICH DEPICTS A R BASE TO RWY 23R AND A L BASE TO RWY 23L. THIS IS THE CUSTOMARY SCHEME IN MY EXPERIENCE FOR ARPTS WITH PARALLEL RWYS. THEREFORE WHEN I DID A R BASE FROM A R DOWNWIND OUTSIDE RWY 23R, HABIT TOOK OVER AND I, IN ERROR, TURNED ON A FAIRLY LONG FINAL TO RWY 23R, THE NEAREST RWY, INSTEAD OF XING LONGER ON R BASE TO RWY 23L. ALTHOUGH I MADE A FAIRLY LONG FINAL APCH CLRLY LINED TO RWY 23R, TWR NEVER MENTIONED MY MISTAKE UNTIL I WAS SAFELY ON THE GND. FORTUNATELY THERE WAS NO INCIDENT.

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.