GOODYEAR, Ariz. -- Trevor Bauer's drone has been grounded.

The ever-inventive Indians right-hander built an unmanned aircraft over the winter. Some people call it a quadcopter because it has four propellers. MLB Security simply called an end to its remote-controlled flights over the Indians' spring training site.

Bauer flew the drone over the complex Wednesday, the day pitchers and catchers reported. He had a video camera on the quad and it took several aerial pictures of the complex with fans watching practice.

He posted the pictures on Twitter. The pictures looked good, but MLB was not impressed. Apparently it does not take kindly to unmanned flights over its ballparks and spring-training facility.

Home for the next 6 weeks @Indians camp. Thanks to these fans for coming out and supporting us already! pic.twitter.com/n52fLgTKPU — Trevor Bauer (@BauerOutage) February 18, 2015

The Indians received word Friday that it would be in their best interest if Bauer put the drone away. No one said if the whir of black helicopter blades could be heard in the background when the Indians received the message.

"I saw the drone the other day," said manager Terry Francona. "I told him if that drone hits (Corey) Kluber, he's released."

Francona confirmed that MLB wanted Bauer to clip the drone's wings.

"We actually got a note telling him to cool it," said Francona. "That actually makes sense. That's all we need. If we get the MLB on us, we don't need the FAA. We'll be in all kinds of trouble."

Directly behind the Indians' spring training site is Phoenix-Goodyear Airport. It is mostly a graveyard for passenger planes, but smaller planes still use it.

Bauer said he was unaware of MLB's concerns over his drone.

"I got a call about it from my agent but that's all I know," said Bauer after the Indians first official practice Friday. "But I don't want to break any rules."

Later Bauer posted this Tweet.

Hey @MLB if my drone is really banned, can I at least have that rule named in my honor? — Trevor Bauer (@BauerOutage) February 20, 2015

Some fans had their say as well.

@BauerOutage @MLB Is it the "no drone zone" considered a part of the infield fly rule? — Lisa (@RollTribe2019_) February 20, 2015

It's possible to buy a quadcopter already assembled and ready to fly. Bauer, who wants to study the inner workings of all things, built his own.

"I just wanted to learn about it, learn how to program it, tune it ... all that different stuff," said Bauer. "It's been fun."

Bauer said the range of his quad is about two miles. He's not sure if that's vertical or horizontal.

"Quadcopters routinely get above the clouds," said Bauer. "It will get pretty far up there."

Yes, he's crashed it. He's also blown it up.

"I was flying it and trying some new motors and I didn't get the speed controllers graded correctly," said Bauer. "I was just hovering it, trying to tune it and all of a sudden I heard a pop and it went into a wall."

The quadcopter caught on fire and erupted, which explains why Bauer has had to redesign it three times.

Bauer is serious about film study when it comes to understanding his pitching motion. He was asked if he thought about having the quad hover above him while he was pitching while taking video of him.

"It does have that capability, but I won't do that," said Bauer with a laugh. "I don't want it falling on my head and mine probably would."

Bauer was 5-8 with a 4.18 ERA in 26 starts last season as a rookie. He's out of options and is favored to open the season as one top four starters in the Tribe's rotation. He said he spent the off-season working on his velocity and command, while refining his splitter and two-seam fastball.

"I'm trying to make my two-seamer move for the first time in my life," said Bauer. "I don't know if that's going to work or not. Some days it worked, some days it didn't."

Bauer said he studied how Kluber and Toronto's Marcus Stroman threw their two seamers. For the split, he broke down film on teammate Danny Salazar and Yankee right-hander Masahiro Tanaka.

Francona wanted Bauer to spend time with pitching coach Mickey Callaway this off-season and he did.

"Mickey actually flew up to Seattle and they went to see a (pitching specialist) together," said Francona. "They spent a couple of days together. He's been great about sending in information and asking for information.

"He's come a long way."

Now if Bauer can just keep the drone/quadcopter in the hanger for the rest of spring training everyone will rest a little easier.