Airworthiness Directive · Amendment 39-14949 · McDonnell Douglas Model DC-10-10, DC-10-10F, DC-10-15, DC-10-30, and DC-10-30F (KC-10A and KDC-10) Airplanes; Model DC-10-40 and DC-10-40F Airplanes Equipped With Pratt & Whitney JT9-20 or JT9-20J Engines; and Model MD-10-10F and MD-10-30F Airplanes
McDonnell Douglas Model DC-10-10, DC-10-10F, DC-10-15, DC-10-30, and DC-10-30F (KC-10A and KDC-10) Airplanes; Model DC-10-40 and DC-10-40F Airplanes Equipped With Pratt & Whitney JT9-20 or JT9-20J Engines; and Model MD-10-10F and MD-10-30F Airplanes
This AD applies to McDonnell Douglas airplanes, certificated in any category; as specified in paragraphs (c)(1), (c)(2), and (c)(3) of this AD.
(1) All Model DC-10-10, DC-10-10F, DC-10-15, DC-10-30, and DC-10-30F (KC-10A and KDC-10) airplanes;
(2) Model DC-10-40 and DC-10-40F airplanes equipped with Pratt & Whitney JT9-20 or JT9-20J engines; and
(3) All Model MD-10-10F and MD-10-30F airplanes.
The FAA is adopting a new airworthiness directive (AD) for the McDonnell Douglas airplanes previously described. This AD requires replacing the control modules of the fire detection systems of the propulsion engines with new, improved control modules. This AD results from a report of broken or severed wiring between engine fire detectors and the fire detection system control module, which caused the fire detection system to become non-functional without flightcrew awareness. We are issuing this AD to prevent unannunciated fire in a propulsion engine, which could cause injury to flightcrew and passengers or loss of the airplane.
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 control modules of the fire detection systems of the propulsion engines with new, improved control modules, in accordance with paragraph 2., “Main Engine Control Module Replacement Instructions,” of Meggitt Safety Systems Service Bulletin 26-34, Revision 2, dated August 15, 2006.
Actions done before the effective date of this AD in accordance with Meggitt Safety Systems Service Bulletin 26-34, Revision 1, dated July 17, 2006, are acceptable for compliance with the corresponding actions required by paragraph (f) of this AD.
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.
