Cengiz Topel Airport KCO / LTBQ

Cengiz Topel is primarily a Turkish Navy air station east of Izmit that DHMI also operates for civil traffic; scheduled passenger service is effectively dormant. DHMI's own year-end statistics show 2025 traffic of 3,756 passengers (2019 peak was 57,280; 2024 was 5,306), and critically 2025 domestic (Ic Hat) traffic was zero - a full-year confirmation that the Pegasus Airlines Trabzon service, which ran only as a 7-week Friday-only trial from 9 Aug to 20 Sep 2024 after a roughly 3-year suspension of scheduled flights, was not repeated in 2025. Pegasus's own current published Trabzon route list (Adana, Izmir, Istanbul) does not include Kocaeli, and a 26 Mar 2026 local news piece has a civic group publicly urging the airport be 'opened to domestic flights' - implying none existed at that date. DHMI's Jan-Jul 2026 cumulative figures do show a modest domestic uptick (535 pax alongside 834 international) versus zero domestic in the same period of 2025, but no specific scheduled carrier or route behind this could be confirmed in current news or booking-engine listings, so it should not be read as a re-established network route. Planners should treat KCO as charter/GA and military-priority only, expect flight-plan filing to the MTMA authority (LTBQZGZX) and no circling/instrument training due to heavy military traffic, and note the single RWY 27 ILS CAT I as the only precision approach.