There are new concerns for the Marine Corps V-22 Osprey Aircraft.
Some pressure switches in the actuators, which make the plane's prop rotors angle, may be bad.
The good news, according to a Marin Corps spokesman, is they're easy to spot when they're bad.
The Marines are now determining whether the Osprey's should be placed on an "inspect for flight notice".
There are more than 40 Osprey's based at the New River Air Station.