A minute later, the transmitter sounded, signaling the crash. The Tampa airport then stopped all departures. Not until two minutes later did the Tampa controller ask the Coast Guard pilot if he knew what building the pilot flew into.
"Bank of America building, about two-thirds of the way up the building," the pilot responded.
Bishop left a note expressing sympathy for Osama bin Laden and supporting the Sept. 11 attacks. Though he said in the note that al Qaeda terrorists tried to recruit him, a police report said there was no truth to the claim.
Police said Bishop committed suicide, not a terrorist act. The Hillsborough County medical examiner's office ruled the death a suicide based on the information it received from law enforcement agencies.
The incident spurred the FAA to push for stronger security at smaller airports and flight schools. The FAA in January suggested that airport operators and flight schools require separate ignition and door keys for private planes; secure planes so they cannot be flown without permission; have student pilots check in before getting keys; and train employees and pilots to look for suspicious activity.
And in April, the agency said it was drafting a rule to require pilots of private planes to carry photo identification cards. Existing federal regulations do not require pilots to show a photo ID when renting a small private plane.
—The Associated Press