WASHINGTON, March 11 (Reuters) - National Transportation

Safety Board Chair Jennifer Homendy will testify at a March 27

Senate Commerce hearing on the mid-air collision of an Army

Black Hawk helicopter and American Airlines ( AAL ) regional jet

that killed 67 people, the panel said.

The panel's aviation subcommittee will examine preliminary

findings of the January 29 crash. The committee has also invited

the acting head of the Federal Aviation Administration, Chris

Rocheleau, and Brigadier General Matthew Braman, who is director

of Army Aviation.