Butte Plane Crash

A worker carries a piece of propeller as NTSB investigators and local authorities scoured the scene at Holy Cross Cemetery of the fatal plane crash which killed 14 people on Sunday, adjacent to the Butte Airport in Butte, Mont., on Tuesday, March 24, 2009.

NTSB investigators and local authorities examine the scene of the fatal plane crash which killed 14 people on Sunday, at Holy Cross Cemetery, adjacent to the Butte Airport in Butte, Mont., on Tuesday, March 24, 2009.

An investigator looks for small pieces of debris as authorities scoured the scene at Holy Cross Cemetery, site of the fatal plane crash which killed 14 people on Sunday, adjacent to the Butte Airport in Butte, Mont., on Tuesday, March 24, 2009.

A fire burns inside the Holy Cross Cemetery after a small, singe-engine plane crashed in an area just south of the Bert Mooney Airport in Butte, Mont. on Sunday, March 22, 2009. A small plane carrying seven children on a ski trip crashed Sunday as it approached the Butte airport, killing all 14 aboard, according to a federal official. The single engine turboprop nose-dived into a cemetery 500 feet from the runway.

Officials investigate the scene of fatal plane crash outside the Butte Airport in Butte, Mont., on Sunday, March 22, 2009.

Map shows location of plane crash in Butte, Mont.

Officials investigate the scene of fatal plane crash outside the Butte Airport in Butte, Mont., on Sunday, March 22, 2009.

NTSB investigators, local police and members of the sheriff's department investigate the scene of fatal plane crash outside the Butte Airport in Butte, Mont., on Sunday, March 22, 2009.

Police tape is strung inside the Holy Cross Cemetery after a small, singe-engine plane crashed in an area just south of the Bert Mooney Airport in Butte, Mont. on Sunday, March 22, 2009.

Dr. Michael Pullen, right, Dr. Vanessa Pullen, left, and their children Sydney Pullen, 9, front left, and Christopher Pullen, 7, in an undated family photo. The Pullen family died along with 10 other people in a plane crash in Butte, Mont., on Sunday, March 22, 2009.

Dr. Brent Ching, left, his wife Kristen Ching, right, and their children Hailey Ching, 5 and Caleb Ching, 3, in an undated family photo. The Ching family died along with 10 other people in a plane crash in Butte, Mont., on Sunday, March 22, 2009.