Narrative:

On left base of a visual approach to 35L (sdf); we found we were closer to the A300 in front of us than planned. We were slowing and configuring as quickly as possible while descending to 2400 feet in flight change and joining the localizer at the same time (autopilot was engaged). As the aircraft leveled at 2400 feet and turned to track the localizer; we hit wake turbulence from the A300 that was about 4 miles in front of us. At that point; the stick shaker came on for about 1 second. As pilot flying; I disengaged the autopilot; lowered the nose slightly; and added power. As I leveled off at about 2150 feet-plus MSL; we checked configuration and ran the landing checklist. We never lost control in any way; crossed centerline; or descended to an unsafe altitude. Nor did we hit any more wake turbulence. When approach control called our traffic for the visual; we were in a descending turn. I believe that combined with the dark made it difficult to judge the actual distance and apparent closure rate. In the future; I would give more space to insure we could configure and slow down more easily.

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Original NASA ASRS Text

Title: B767-300 Captain reported encountering wake turbulence in trail of an A300 while on a visual approach to SDF.

Narrative: On left base of a visual approach to 35L (SDF); we found we were closer to the A300 in front of us than planned. We were slowing and configuring as quickly as possible while descending to 2400 feet in Flight Change and joining the Localizer at the same time (Autopilot was engaged). As the aircraft leveled at 2400 feet and turned to track the localizer; we hit wake turbulence from the A300 that was about 4 miles in front of us. At that point; the stick shaker came on for about 1 second. As Pilot Flying; I disengaged the Autopilot; lowered the nose slightly; and added power. As I leveled off at about 2150 feet-plus MSL; we checked configuration and ran the landing checklist. We never lost control in any way; crossed centerline; or descended to an unsafe altitude. Nor did we hit any more wake turbulence. When Approach Control called our traffic for the visual; we were in a descending turn. I believe that combined with the dark made it difficult to judge the actual distance and apparent closure rate. In the future; I would give more space to insure we could configure and slow down more easily.

Data retrieved from NASA's ASRS site 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.