The welcome mat has been pulled out from under the blimp now carrying sightseers over the San Francisco Bay Area because, some say, it's too noisy. "It's noisy, it's obtrusive and we want to get rid of it," Oakland City Councilman Dick Spees said. Several councilmen reported receiving many complaints from city residents about noise and the blimp's advertisements. The 190-foot-long airship, powered by two engines, has been flying out of Oakland International Airport since May 6. It displays big advertisements on its sides and makes 10 to 12 flights a day over the Bay Area with passengers paying $150 each. The blimp is owned by Airship Industries of London.