Boeing MD-11 Engine Falls Off: FAA Issues Broader Airworthiness Fixes
Published Date: 11/24/2025
Rule
Summary
The FAA is updating safety rules for Boeing airplanes after a scary accident where an engine fell off during takeoff. Now, more Boeing models like the MD-10 and DC-10 series must be inspected and fixed before flying again. These new rules start December 1, 2025, and could cost operators some time and money but keep everyone safer in the sky.
Analyzed Economic Effects
3 provisions identified: 0 benefits, 3 costs, 0 mixed.
Grounding until inspection and fixes
As of December 1, 2025, affected Boeing MD-11, MD-11F, MD-10 (MD-10-10F, MD-10-30F) and DC-10 series airplanes are prohibited from further flight until each airplane is inspected and all applicable corrective actions are performed using a method approved by the Manager, AIR-520, Continued Operational Safety Branch, FAA. The rule continues the emergency requirement first sent to known U.S. owners and operators on November 14, 2025.
More Boeing models added; 167 U.S. planes affected
The AD expands applicability beyond MD-11/MD-11F to include MD-10-10F, MD-10-30F, and DC-10 models (DC-10-10, -10F, -15, -30, -30F (KC-10A and KDC-10), -40, -40F), and the FAA estimates the rule affects 167 airplanes of U.S. registry. The FAA also states it has no definitive data to estimate the inspection and corrective-action costs.
Special flight permits restricted
Special flight permits under 14 CFR 21.197 and 21.199 are not allowed for affected airplanes unless approved per the procedures specified in the AD (see paragraph (i)(1)). This means operators cannot move affected airplanes under a standard special flight permit without separate approved authorization.
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