The 61st ICAO Conference of Directors General of Civil Aviation for Asia and the Pacific, held in Kuala Lumpur from 7 to 11 September, backed an ACI Asia-Pacific and Middle East paper written with CANSO. The paper asks whether airport capacity and air-traffic-management capacity will actually meet the traffic that airlines are already selling. That sounds bureaucratic. It is the right question. A new pier does not create a landing slot. A second runway does not create a controller. A 2053 forecast of nearly 10 billion Asia-Pacific passengers does not survive a summer afternoon when Bangkok, Jakarta, Manila, Delhi and Mumbai all try to recover the same delayed bank in the same constrained sky.
ACI and CANSO signed a cooperation memorandum in Bangkok in May for the same reason. Assess airport and ATM capacity together. Find where the ground and the air are out of step. Push Airport Collaborative Decision-Making, air-traffic flow management and total airport management instead of another glass hall. ICAO’s own Asia-Pacific group already drafted regional guidance in April on how to measure airport capacity and airspace capacity as one problem. The conference did not invent the idea. It gave directors-general a political hook to fund the unglamorous half of it. Slot policy was the second paper. The Worldwide Airport Slot Guidelines have barely moved since 1974. Historic rights still protect incumbents at coordinated fields. New regional frequencies and late low-cost entries lose. ACI wants retention tied to how a slot is used, not only to whether it was flown 80 percent of the season. Pacific island states backed the climate paper. Heat, flood, ash, smoke and storm are already cutting declared capacity on days the master plan still treats as normal. ACI’s climate-risk tools and Net Zero Roadmap are the available kit. They only work if a declared runway rate can be cut on a 42-degree afternoon without pretending the schedule is still legal.
The mismatch is already visible. Delhi and Mumbai sell dense domestic waves into terminals that still fight landside queues and into airspace shared with military corridors and VIP bubbles. Bangkok’s two airports share one weather and one FIR. Jakarta’s recovery after ash showed how little spare stand and crew the system holds. Manila and the single-runway secondary fields of the Philippines lose a city when one aircraft parks on the runway. Kuala Lumpur can close the terminal control area for a flypast and discover that gates were never the constraint. Operational gains come first. Better arrival management. Shared stand plans. A-CDM that actually talks to flow control. Flexible runway use. Published five and ten-year joint forecasts from the airport and the ANSP with a number for movements in bad weather, not only in brochure weather. Construction still matters. It does not substitute for a slot that does not exist and a sector that cannot accept the next twelve arrivals. Asia’s next capacity crisis will not begin at check-in. It will begin in the sky above a terminal that looks finished.