Narrative:

IFR phf-bwi. 10 NM southeast of bwi we were cleared for visibility approach to runway 33R. At 5 NM we discovered we were lined up with runway 33L (turning base to final runway 33R became visible). Tower questioned our runway alignment and we explained that we had mistakenly idented runway 33L for 33R. No evasive action was required or performed to realign our aircraft with the correct runway.

Google
 

Original NASA ASRS Text

Title: TWR QUESTIONED FLTS ALIGNMENT WITH RWY.

Narrative: IFR PHF-BWI. 10 NM SE OF BWI WE WERE CLRED FOR VIS APCH TO RWY 33R. AT 5 NM WE DISCOVERED WE WERE LINED UP WITH RWY 33L (TURNING BASE TO FINAL RWY 33R BECAME VISIBLE). TWR QUESTIONED OUR RWY ALIGNMENT AND WE EXPLAINED THAT WE HAD MISTAKENLY IDENTED RWY 33L FOR 33R. NO EVASIVE ACTION WAS REQUIRED OR PERFORMED TO REALIGN OUR ACFT WITH THE CORRECT RWY.

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.