LYNN, Mass. (AP) – Chunks of ice from one of three planes approaching Logan International Airport crashed through the roof of a Lynn home, but federal regulators say it could be “very difficult to pinpoint” the source.

Constance Cotter, 80, is deaf, but she felt her home shake Friday night when a brick-sized piece of ice tore through the roof over her bedroom.

“She was in shock,” said Mary Petrillo, the woman’s daughter. “She actually heard the boom and she thought the house was falling down.”

Cotter was downstairs and uninjured. The ice block tore a hole 2 feet by 4 feet in the roof. Other shards of ice fell as well.

The Federal Aviation Administration said the ice likely fell from one of three planes incoming to Logan between 5 p.m. and 5:15 p.m. It planned to contact the carriers Monday.

“It’s difficult for a flight crew to realize a piece of ice may have fallen from an aircraft,” FAA spokesman Jim Peters said of the difficulty of holding one carrier responsible.

Peters would not name the airlines.

Damage to the roof has been temporarily repaired, but Petrillo is concerned that it could happen again.

“My mother was lucky,” she said. “The next person might not be.”

AP-ES-11-28-04 1130EST