Airworthiness Directive · Amendment 39-15478 · Boeing Model 737-600, -700, -700C, -800, and -900 Series Airplanes
Boeing Model 737-600, -700, -700C, -800, and -900 Series Airplanes
Superseded. A later AD replaced this one: AD 2012-23-08. Comply with the one in force.
This AD applies to Boeing Model 737-600, -700, -700C, -800, and -900 series airplanes, certificated in any category; as identified in Boeing Special Attention Service Bulletin 737-54-1043, dated May 2, 2007.
We are adopting a new airworthiness directive (AD) for certain Boeing Model 737-600, -700, -700C, -800, and -900 series airplanes. This AD requires replacing the drain tube assemblies and support clamps on the aft fairing of the engine struts. This AD results from reports of failure of the drain tube assembly and clamp on the aft fairings of an engine strut. We are issuing this AD to prevent failure of the drain tube assemblies and clamps on the aft fairings of the of the engine struts. Such a failure could allow leaked flammable fluids in the drain systems to discharge on to the heat shields of the aft fairings of the engine struts, which could result in an undetected and uncontrollable fire.
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
Within 60 months after the effective date of this AD, replace the drain tube assemblies and support clamps on the aft fairing of the struts of engine number 1 and engine number 2 with new drain tube assemblies and clamps, in accordance with the Accomplishment Instructions of Boeing Special Attention Service Bulletin 737-54-1043, dated May 2, 2007.
