Less than 24 hours after a Dallas-bound Southwest Airlines jet made an emergency landing in Philadelphia Tuesday, attorney Ladd Sanger had already fielded two calls from passengers on that flight.

By midafternoon Wednesday, former passengers on Southwest Flight 1380 were making inquiries with Sanger's Texas-based aviation law firm, a sign of litigation brewing over the airline's engine failure.

The callers had witnessed a woman, Jennifer Riordan, almost sucked out of a shattered window of a plane traveling about 30,000 feet above the ground. Riordan died, despite efforts from other passengers to pull her back into the plane and resuscitate her.