Aero Mongolia (M0, Ulaanbaatar) has faced renewed restrictions on certain paid airport services for domestic and international charter flights at Ulaanbaatar International from November 4, 2026, after allegedly failing to honour an agreed debt repayment schedule. Airport operator New Ulaanbaatar International Airport LLC (NUBIA) said it had temporarily suspended earlier restrictions after reaching a repayment agreement with the carrier. However, Aero Mongolia allegedly continued to breach its payment obligations, prompting the renewed measures. The restrictions do not affect other flight operations.