A Georgia woman said she is thankful to be alive after a 20-foot section of a 747 cargo plane's wing fell off before part of it came crashing into her home.

Pamela Ware was in her Clayton County, Ga., home Sunday afternoon when she heard a boom from above.

"I was like, 'Huh?'" Ware told local ABC affiliate WSB. "Actually, I hit the floor."

The boom Ware heard was a part of the wing of a China Airlines-operated Boeing 747 cargo plane flying to Atlanta from Anchorage, Alaska. As the plane approached Atlanta's Hartsfield-Jackson International Airport, a piece of its right wing tore off, forcing the pilot to make an emergency landing, according to WSB.

Part of the ripped debris landed on top of Ware's house, while another chunk of the plane's wing landed a few miles away, in the parking lot of a Walmart.

The plane's debris punctured two holes in Ware's roof before landing in her yard.

"If it had landed in here, because that is just Sheetrock, it would have … oh, boy, I wouldn't be no good," Ware, who could not be reached today by ABCNews.com, told WSB. "I just keep thinking of what could have happened."

Federal officials are investigating what caused the plane's wing to break.