Summary
We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 757-200, -200PF, and -300 series airplanes. This proposed AD was prompted by reports of cracking found at a certain fuselage frame inner chord. This proposed AD would require repetitive inspections for any cracking of a certain fuselage frame inner chord; for certain airplanes, an identification of the material of a certain fuselage frame inner chord; and applicable corrective actions. We are proposing this AD to address the unsafe condition on these products.