Airworthiness Directives; The Boeing Company Airplanes

FAA / Federal Register · 2019-13336

The FAA proposes to supersede Airworthiness Directive (AD) 2013-07-09, which applies to certain The Boeing Company Model 737-700, -700C, -800, and -900ER series airplanes, Model 747-400F series airplanes, and Model 767-200 and -300 series airplanes. AD 2013-07-09 requires a general visual inspection for affected serial numbers of the crew oxygen mask stowage box units, and replacement or re- identification as necessary. Since the FAA issued AD 2013-07-09, the agency has determined that the affected parts may be installed on airplanes outside the original applicability of AD 2013-07-09. This proposed AD would retain the requirements of AD 2013-07-09 and expand the applicability to include those other airplanes. The FAA is proposing this AD to address the unsafe condition on these products.