Summary
The FAA proposes to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 777-200, -200LR, -300, -300ER, and 777F series airplanes. This proposed AD was prompted by reports of cracks found on the main landing gear (MLG) support beam lower stabilizer brace aft fitting lower flange attachment holes. This proposed AD would require repetitive inspections of the MLG support beam lower stabilizer brace aft fittings for any crack; repetitive inspections of the MLG support beams and lower stabilizer braces for any damage; repetitive inspections of the MLG support beams and the upper and lower flanges of the MLG support beam lower stabilizer brace aft fittings for any crack, or repetitive inspections of the upper and lower flange surfaces of the MLG support beam lower stabilizer brace aft fittings for any crack; and applicable on-condition corrective actions. The FAA is proposing this AD to address the unsafe condition on these products.