Narrative:

During radar vectors to runway 17R at den, we were cleared for a visual approach 8 mi from the field, well above glide path. In an attempt to lose altitude in the shortest amount of down range travel, I decided to maneuver the aircraft slightly through the final approach course in an s-turn fashion. In my preoccupation with vertical navigation, I drifted further right than I had intended and actually intruded on the extended centerline of runway 16L, a parallel runway. Once I recognized my mistake, I quickly corrected my course. That notwithstanding, approach control chided me for my excursion. While I was #1 for the airport, I inadvertently flew in front of an air carrier aircraft that was landing on the parallel. The closest point of approach between the 2 aircraft was 4 mi. While the air carrier crew had me in sight during this entire incident and both aircraft landed uneventfully, I nevertheless felt uncomfortably close. My distraction with the vertical navigation challenge presented to me led to a breakdown in my lateral navigation and overall situational awareness.

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Original NASA ASRS Text

Title: AN A300-600 PLT MADE S-TURNS ON FINAL TO DEN RWY 17R XING THE FINAL AND CAME WITHIN 4 MI OF TFC FOR RWY 17L.

Narrative: DURING RADAR VECTORS TO RWY 17R AT DEN, WE WERE CLRED FOR A VISUAL APCH 8 MI FROM THE FIELD, WELL ABOVE GLIDE PATH. IN AN ATTEMPT TO LOSE ALT IN THE SHORTEST AMOUNT OF DOWN RANGE TRAVEL, I DECIDED TO MANEUVER THE ACFT SLIGHTLY THROUGH THE FINAL APCH COURSE IN AN S-TURN FASHION. IN MY PREOCCUPATION WITH VERT NAV, I DRIFTED FURTHER R THAN I HAD INTENDED AND ACTUALLY INTRUDED ON THE EXTENDED CTRLINE OF RWY 16L, A PARALLEL RWY. ONCE I RECOGNIZED MY MISTAKE, I QUICKLY CORRECTED MY COURSE. THAT NOTWITHSTANDING, APCH CTL CHIDED ME FOR MY EXCURSION. WHILE I WAS #1 FOR THE ARPT, I INADVERTENTLY FLEW IN FRONT OF AN ACR ACFT THAT WAS LNDG ON THE PARALLEL. THE CLOSEST POINT OF APCH BTWN THE 2 ACFT WAS 4 MI. WHILE THE ACR CREW HAD ME IN SIGHT DURING THIS ENTIRE INCIDENT AND BOTH ACFT LANDED UNEVENTFULLY, I NEVERTHELESS FELT UNCOMFORTABLY CLOSE. MY DISTR WITH THE VERT NAV CHALLENGE PRESENTED TO ME LED TO A BREAKDOWN IN MY LATERAL NAV AND OVERALL SITUATIONAL AWARENESS.

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.