Narrative:

While approaching dab from the south, we were cleared to land on runway 7R. This was my first flight with a student, so I accidentally made an approach to the bigger runway (runway 7L) while I was teaching. In the future, I am going to pay more attention to the phase of flight and to the less prominent runways. After ATC (dab tower) advised me that I was aligned with the wrong runway, I remained calm and landed the airplane safely. Fortunately, there was no conflicting traffic and no hazard.

Google
 

Original NASA ASRS Text

Title: INSTRUCTOR PLT WITH STUDENT IN C172 APCHS AND LANDS ON THE WRONG PARALLEL RWY.

Narrative: WHILE APCHING DAB FROM THE S, WE WERE CLRED TO LAND ON RWY 7R. THIS WAS MY FIRST FLT WITH A STUDENT, SO I ACCIDENTALLY MADE AN APCH TO THE BIGGER RWY (RWY 7L) WHILE I WAS TEACHING. IN THE FUTURE, I AM GOING TO PAY MORE ATTN TO THE PHASE OF FLT AND TO THE LESS PROMINENT RWYS. AFTER ATC (DAB TWR) ADVISED ME THAT I WAS ALIGNED WITH THE WRONG RWY, I REMAINED CALM AND LANDED THE AIRPLANE SAFELY. FORTUNATELY, THERE WAS NO CONFLICTING TFC AND NO HAZARD.

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.