Airworthiness Directive · Amendment 39-16299 · Fuel
McDonnell Douglas Corporation Model DC-9-30, DC-9-40, and DC-9-50 Series Airplanes
This AD applies to McDonnell Douglas Corporation Model DC-9-31, DC-9-32, DC-9-32 (VC-9C), DC-9-32F, DC-9-33F, DC-9-34, DC-9-34F, and DC-9-32F (C-9A, C-9B), DC-9-41, and DC-9-51 airplanes, certificated in any category; as identified in Boeing Service Bulletin DC9-28-227, dated April 23, 2009.
We are adopting a new airworthiness directive (AD) for certain Model DC-9-30, DC-9-40, and DC-9-50 series airplanes. This AD requires inspecting to determine the part numbers of the forward and aft auxiliary tank fuel boost and transfer pump conduit/conduit assembly and conduit assembly electrical connector, as applicable, and corrective actions if necessary. This AD results from fuel system reviews conducted by the manufacturer. We are issuing this AD to detect and correct the potential for an arc/spark condition to occur within the fuel boost or transfer pump conduit assembly connectors and propagate into the forward and aft auxiliary fuel tanks, which could result in a fire or explosion.
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, inspect to determine the part numbers of the forward and aft auxiliary fuel tank boost and transfer pumps conduit assembly and conduit assembly electrical connector, as applicable, and do applicable corrective actions, in accordance with the Accomplishment Instructions of Boeing Service Bulletin DC9-28-227, dated April 23, 2009. Do the applicable corrective actions before further flight. If the auxiliary fuel tank(s) has been removed, thereby removing the fuel boost or transfer fuel pump conduit assembly connectors, the corrective action specified in the Accomplishment Instructions of Boeing Service Bulletin DC9-28-227, dated April 23, 2009, is not required. If the removed auxiliary fuel tank(s) are re-installed, the requirements of paragraph (g) of this AD must be done before further flight.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
