Southwest loosens weight restrictions for cargo

Southwest loosens weight restrictions for cargo       Southwest Airlines said it will increase its per-piece weight limits on cargo shipments to 200 pounds from 150 pounds on Aug. 1. The Dallas-based airline will also raise seafood shipment limits to 175 pounds from 80 pounds, allowing commercial customers to ship large items such as whole tuna.
   Southwest said the moves were made in response to customer demand. Southwest’s fleet consists of more than 462 Boeing 737s. The airline had cargo revenue of $133 million in 2005, a fraction of the $7.3 billion in revenue it collected for passenger service.