Airworthiness Directive · Amendment 39-17369 · Fuel system
The Boeing Company Airplanes
This AD applies to The Boeing Company Model 737-600, -700, -800, and -900ER series airplanes, certificated in any category, identified in Boeing Special Attention Service Bulletin 737-28-1303, dated April 26, 2012.
We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 737-600, -700, -800, and -900ER series airplanes. This AD was prompted by incorrect wire support clamps installed within the left environmental control systems (ECS) bay, which could allow wiring to come in contact with the exposed metal of the improper clamp. This AD requires inspections to identify the part number of the wire support clamp, related investigative actions, and corrective actions if necessary. We are issuing this AD to prevent electrical arcing and a potential ignition source within the ECS bay, which in combination with flammable fuel vapors, could result in a center wing fuel tank explosion, and consequent loss of the airplane.
Within 60 months after the effective date of this AD, do a detailed inspection for part number (P/N) TA0930034-10 wire support clamp at the locations specified in Figures 1 through 4 of Boeing Special Attention Service Bulletin 737-28-1303, dated April 26, 2012, and do all applicable related investigative and corrective actions, in accordance with the Accomplishment Instructions of Boeing Special Attention Service Bulletin 737-28-1303, dated April 26, 2012, except as provided by paragraph (h) of this AD. Do all applicable related investigative and corrective actions before further flight.
Where Boeing Special Attention Service Bulletin 737-28-1303, dated April 26, 2012, specifies to install P/N TA0930034-10 wire support clamp, this AD also allows installation of P/Ns TA0930034-10P, TA0930034-11, and TA0930034-12P wire support clamps.
