Summary
The FAA proposes to supersede an existing airworthiness directive (AD) for certain EMBRAER Model EMB-135 and EMB-145 series airplanes. That AD currently requires replacing the nose landing gear wheel nuts and associated inner and outer seals, and reidentifying the landing gear strut. This proposed AD would add an airplane to the applicability and revise a part number for a replacement part. This proposed AD is prompted by a report of an invalid part number for the new nose landing gear wheel nut. We are proposing this AD to prevent separation of the wheels from the nose landing gear due to the failure of the outer wheel bearings, and consequent loss of control of the airplane during takeoff and landing.