The Transportation Security Administration will review the fiery crash of a small plane into an IRS office building and use that information to shape future anti-terrorism regulations for the nation's 220,000 private airplanes.

The review is the first in which the TSA has studied a crash involving a private plane. It comes as the agency undertakes a controversial plan to regulate private jets, which currently don't face TSA security requirements such as passenger screening.

TSA Assistant Administrator John Sammon said the agency is hiring an aviation expert to study reports by the FBI and other agencies on the Feb. 18 crash in Austin that killed two and extensively damaged a seven-story building.

"We've commissioned folks to do a follow-up study as the results are being released to see what impacts it would have on our future decision-making," Sammon said. The analyst, who has not been named, will study the cause and extent of damage, including issues such as how the building's structure and composition affected the fire.

Sammon said the review would provide valuable information to help the TSA understand how much damage and how many deaths could be caused by a small plane flown into an office building.

"It may simply be a confirmation that for very small planes you're not going to see a lot of casualties. Or there may be something we're unaware of," Sammon said.