At least four freighters so far have been parked – two at Paine Field outside Seattle and two in the Arizona desert – after rolling out of Boeing’s Everett production line as a result of the ongoing slump in cargo demand, according to a Seattle Times report.

One of the white-painted freighters in Everett is a 777 freighter owned by Air France, while the second is a 747- 400ERF freighter ordered by LoadAir, a Kuwaiti airfreight company. A second LoadAir 747 freighter, the last 747-400 that will ever be built, rolled out of the Everett factory Thursday and will likely join its twin on the tarmac.

Two more freighters freshly painted in the livery of China Southern flew this week not to Asia, but to a jet parking lot in the Arizona desert.

“We have no white tails,” said Boeing spokesman Jim Proulx. “We have not built any airplanes that are not designated for delivery to customers,” he added saying the 747s for LoadAir are on target for delivery in September.

In February, Air France took delivery of the first of two 777 freighters, but the carrier has yet to decide whether to store the third 777, an Air France spokeswoman who asked not to be identified told Bloomberg.

The airline said in February it will defer delivery of two more 777 freighters to sometime between 2010 and 2012.

As for the two China Southern 777s now in Arizona, the airline hasn’t yet accepted delivery of the 777s. They were stored by Boeing, an airline executive told Bloomberg on Friday from Guangzhou.

China Southern, the nation’s biggest carrier, said this week it will save US$1 billion this year by delaying aircraft deliveries.

“We’re working with China Southern to deliver the airplanes on a delivery schedule that best fits their fleet requirements,” said Boeing spokesman Jim Proulx. “We don’t discuss our financial dealings with our customers.”