FAA-2011-0157 Chemical oxygen generators in the lavatory

This document publishes in the Federal Register an amendment adopting airworthiness directive (AD) 2011-04-09 that was sent previously by individual notices to the known U.S. owners and operators of affected airplanes identified above.

This AD requires modifying the chemical oxygen generators in the lavatory.

This AD was prompted by reports that the current design of these oxygen generators presents a hazard that could jeopardize flight safety.

We are issuing this AD to eliminate this hazard.