Narrative:

I was pilot monitoring. We were cleared for river visual approach to runway 19 at dca. First officer had visual on the river and began the approach. Aircraft was on the path. Told to contact tower and I went heads down to switch over and get landing clearance. When I looked back up we were below the path and descending. Just as I directed a correction we got a GPWS terrain warning. First officer disconnected the autopilot and started correcting back to the descent path. I also directed a turn to the left to continue following the river. We configured the aircraft and he was slightly below the path at 1000 ft and correcting. At 500 ft he was stable and following the VASI guidance. Landing was uneventful.

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Original NASA ASRS Text

Title: Flight crew of a large transport jet reported going below glide path on approach into DCA resulting in a GPWS warning. After correcting the flight landed normally.

Narrative: I was pilot monitoring. We were cleared for River Visual Approach to runway 19 at DCA. FO had visual on the river and began the approach. Aircraft was on the path. Told to contact tower and I went heads down to switch over and get landing clearance. When I looked back up we were below the path and descending. Just as I directed a correction we got a GPWS terrain warning. FO disconnected the autopilot and started correcting back to the descent path. I also directed a turn to the left to continue following the river. We configured the aircraft and he was slightly below the path at 1000 ft and correcting. At 500 ft he was stable and following the VASI guidance. Landing was uneventful.

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.