Airline and aviation news: What you might have missed over the weekend

What were the best commercial aviation stories of the weekend? I was monitoring the news on Saturday and Sunday so you didn't have to. Here's what you may have missed:

Wreckage from Malaysian Airlines Flight 17 left a rebel-controlled area of Ukraine by train, the Wall Street Journal reported. 

American Airlines and its pilots union said they're going to keep negotiating on a new contract. According to Susan Carey of the Wall Street Journal, the issue isn't money. It's work rules. If the sides can't agree, the issues will go to arbitration. 

Hugo Martin of the Los Angeles Times reported on a study that found U.S. carriers are no longer improving fuel efficiency as substantially as they did a few years ago. 

No surprise. Frontier Airlines is pulling out of Harrisburg, Pa. That means no more flights to Orlando and Denver, beginning next year. PennLive.com. 

The most powerful Wall Street analysts, including Hunter Keay of Wolfe Research, like United CEO Jeff Smisek again. Crain's Chicago Business. 

"Nude man falls through ceiling at Logan, assaults bystander." Boston Globe.

Oakland International Airport finally has an automated train to take passengers from terminals to the nearest public transit station, where they can ride a BART train. It opened at 6 p.m. Saturday. San Francisco Chronicle. 

Another small airport has outsized plans for its future. "Daytona Beach airport officials eye expansion." Daytona Beach News-Journal.