Airworthiness Directive · Amendment 39-23203 · Nacelles/pylons
The Boeing Company Airplanes
This emergency AD applies to all The Boeing Company airplanes, certificated in any category, as identified in paragraphs (c)(1) through (3) of this emergency AD.
(1) Model MD-11 and MD-11F airplanes.
(2) Model MD-10-10F and MD-10-30F airplanes.
(3) Model DC-10-10, DC-10-10F, DC-10-15, DC-10-30, DC-10-30F (KC-10A and KDC-10), DC-10-40, and DC-10-40F airplanes.
The FAA is superseding Emergency Airworthiness Directive (AD) 2025-23-51, which applied to all The Boeing Company Model MD-11 and MD- 11F airplanes. Emergency AD 2025-23-51 was prompted by an accident where the left-hand engine and pylon detached from the airplane during takeoff. Emergency AD 2025-23-51 prohibited further flight until the airplane is inspected and all applicable corrective actions are performed using a method approved by the FAA. Since the FAA issued Emergency AD 2025-23-51, the FAA has determined additional airplane models are subject to the same unsafe condition. This emergency AD continues to require the actions in AD 2025-23-51 and adds the Model MD-10-10F, MD-10-30F, DC-10-10, DC-10-10F, DC-10-15, DC-10-30, DC-10- 30F (KC-10A and KDC-10), DC-10-40, and DC-10-40F airplanes to the applicability. The FAA previously sent an emergency AD to all known U.S. owners and operators of these airplanes. The FAA is issuing this emergency AD to address the unsafe condition on these products.
Comply with this emergency AD within the compliance times specified, unless already done.
(1) For airplanes identified in paragraph (c)(1) of this emergency AD: As of December 1, 2025 (the effective date of Emergency AD 2025-23-51), further flight is prohibited until the airplane is inspected and all applicable corrective actions are performed using a method approved by the Manager, AIR-520, Continued Operational Safety Branch, FAA.
(2) For airplanes identified in paragraphs (c)(2) and (3) of this emergency AD: As of the effective date of this emergency AD, further flight is prohibited until the airplane is inspected and all applicable corrective actions are performed using a method approved by the Manager, AIR-520, Continued Operational Safety Branch, FAA.
