Southwest Airlines, the cattle-car service of affordable air transportation, resumed flights this morning after yesterday's maintenance SNAFU grounded "approximately 4 percent" on Tuesday night. It seems that many of their airplanes failed to have safety checks last year, which resulted in yesterday's Southwest Airlines schedule meltdown and a drop in their stock price. But today, Thursday, "the majority of the planes removed from service have been returned" spokeswoman Christi Day tells CBS 5.

Yesterday's aircraft removals caused widespread cancellations and delays at airports across the country.

Flights at Oakland Airport have all resumed, but according to CBS 5, "San Francisco International Airport's duty manager was unable to provide specifics regarding flight cancellations."