A 30-year-old District man has been charged with interfering with the duties of an Air Florida flight crew after allegedly telling fellow passengers aboard a Miami-to-Washington flight Thursday that he was carrying a bomb.

Bruce Alan Landy, who gave as his address as Howard Johnson's Motor Lodge at 2601 Virginia Ave. NW, appeared yesterday before U.S. Magistrate Harvey Schlesinger in Jacksonville, Fla., on the charge and was ordered held without bond, a court spokesman said. If convicted, he could face up to 20 years in prison.

Landy was scheduled to undergo a psychiatric examination late yesterday, the spokesman said.

The flight originated in Freeport, Bahamas. Landy was among passengers who boarded at Miami, officials said. They said that about 30 minutes after takeoff Landy announced he was carrying a package containing a bomb.

According to U.S. Marshall George Grosse, two unidentified passengers overpowered Landy. The plane made an unscheduled landing in Jacksonville, where Landy was removed and taken into custody by federal authorities. No bomb or any other weapon was found. The Boeing 737 arrived in Washington 35 minutes late.

None of the 93 passengers aboard the plane were injured.

Authorities said Landy offered no information other than his address. A desk clerk at the motel confirmed that Landy had been staying there, but would not state whether he was a perament or transient resident.