source:[1] Leaked Memo: UPS, FedEx's Cargo Planes To Be Grounded Over ... (https://ground.news/article/leaked-memo-ups-f ...)[2] Regulators Expect MD-11 Grounding to Continue Into 2026 After ... (https://aviationnews.eu/news/2025/11/regulato ...)[3] MD-11 fleet grounding after UPS crash unlikely to end before 2026 (https://www.reddit.com/r/planecrashes/comment ...)