RENTON, Wash. -- Boeing's 737 aircraft face some new challenges. The Federal Aviation Administration is ordering special inspections of 1,050 Boeing 737 aircrafts flown by U.S. airlines.

Inspectors need to check a possibly defective part that could cause pilots to lose control if the aircraft fails.

The specific problem is with a pin in the 737's tail that's prone to corrosion.

The FAA is mandating airlines check and replace, if necessary, pins in the plane's tail with improved pins.

The concern is over how the pins protective coating was applied when they were manufactured. The pins are prone to corrosion and they help secure the horizontal stabilizer.

The Boeing 737 is a popular aircraft among airlines like Southwest and Alaska Airlines.

The FAA's order could cost more than $10.1 million to fix across the fleet or up to $9,627 per plane to fix.

No accidents have been reported because of the parts. Although this is a pressing issue, NBCNews reports no planes will be grounded.

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