Heathrow Airport this morning published three new Operational Advice Notices (OAN 461, 500 and 535) dated 17 September, detailing overnight closure of the main airside tunnel, power-outage work on Stands 309 and 311, and a 24-hour diversion on Hotel Road—a key route for crew buses and concession-supplier vehicles. OANs are legally binding on all airside pass holders and breaches can attract fines or suspension of permits. While the works are scheduled for off-peak hours, the tunnel closure in particular may force longer towing routes for wide-body aircraft repositioning between Terminals 4 and 5, potentially adding ground-time during the morning wave of departures. Cargo handlers have been advised to pre-position high-value shipments before 22:00, and limousine providers serving premium passengers at Terminal 3 will need to follow alternative signage to avoid missed kerbside slots. Heathrow says real-time updates will appear in the Airport Operations Database and via its A-CDM mobile app. Global mobility teams moving VIPs or time-critical technicians through Heathrow this week should share the OAN summary with travel agents and ground-transport vendors to avert last-minute surprises. The notices also signal that infrastructure works—paused during peak-summer traffic—are ramping up again ahead of winter operations.
