Assuring Safe Aircraft Operations at Changi Airport Despite Haze

24 June 2013

In light of the haze situation, the Civil Aviation Authority of Singapore (CAAS) and Changi Airport Group (CAG), together with other airport stakeholder agencies, have taken steps to ensure that aircraft operations at Changi Airport continue to be conducted safely and efficiently even in low visibility conditions. Since 19 June 2013, as a precaution, the separation between aircraft take-offs and landings has been increased. Airfield lights, such as the runway and approach lights, are turned on even in daytime to enhance the visibility of the runways. So far, no significant delays in aircraft departures and arrivals have been experienced.

Changi Airport has the facilities and procedures necessary for the safe landing of aircraft in low visibility conditions in accordance with international standards. It is equipped with instrument landing systems (ILS), which provide position information needed to guide aircraft as they make their approach for landing.

Under normal circumstances, Changi Airport can allow aircraft to land safely when the runway visual range (RVR) 1 is more than 550 metres. Should the RVR fall to between 300 and 550 metres, Changi Airport can continue to allow aircraft to land safely with more stringent measures. These include enforcing obstacle protection in areas around the runways to protect the integrity of the ILS signals. Secondary power supply for essential equipment, such as runway lights, will also be put on standby. There will also be greater separation between aircraft landings and take-offs. Some delays and disruptions to aircraft operations, including flight cancellations, could be expected.

In the event that the RVR falls below 300 metres, Changi Airport will not be able to accept aircraft landings for safety reasons. However, it will continue to operate and aircraft can continue to take-off safely, in accordance with each airline's policy.

CAAS and CAG are closely monitoring the situation and working with the airline and airport community. This includes preparing for lower visibility operations at Changi Airport should this be required. The safety of aircraft operations at Changi Airport remains top priority, and every effort will be made to minimise their disruption.

About the Civil Aviation Authority of Singapore (CAAS)

The mission of CAAS is to grow a safe, vibrant air hub and civil aviation system, making a key contribution to Singapore's success. CAAS' roles are to oversee and promote safety in the aviation industry, develop the air hub and aviation industry, provide air navigation services, provide aviation training for human resource development, and contribute to the development of international civil aviation.

For more information, visit

About Changi Airport Group (CAG)

Changi Airport Group (Singapore) Pte Ltd (CAG) ( was formed on 16 June 2009 and the corporatisation of Singapore Changi Airport (IATA: SIN, ICAO: WSSS) followed on 1 July 2009.  As the company managing Changi Airport, CAG undertakes key functions focusing on airport operations and management, air hub development, commercial activities and airport emergency services.  CAG also manages Seletar Airport (IATA: XSP, ICAO: WSSL) and through its subsidiary Changi Airports International, invests in and manages foreign airports.

Changi Airport ( is the world’s most awarded airport with more than 430 accolades received since it opened in 1981. To serve passengers and visitors from the world over, there are over 330 retail stores and 120 F&B outlets across the airport's three terminals.  Changi handled more than 51 million passenger movements in 2012, an annual record.  Today, it serves some 100 airlines flying to over 250 cities in about 60 countries and territories worldwide.  A flight takes off or lands at Changi roughly once every 100 seconds.


1 Runway Visual Range (RVR) is the range over which the pilot of an aircraft on the centre line of a runway can see the runway surface markings or the lights delineating the runway or identifying its centre line. It is a function of factors such as ambient light, runway lighting level and dispersion coefficient of the air, and computed from readings taken by three sets of transmissometers (located at the beginning, the mid-point and the end of the runway).

For more information, please contact:

Ms Michelle Teo
Senior Manager 
Corporate Communications Division
Tel: (65) 6541 2086
Mobile: (65) 9825 0982

Mr Robin Goh
Assistant Vice President, Corporate & Marketing Communications
Changi Airport Group
Tel: (65) 6595 6486
Mobile: (65) 9093 5772


Last Updated on 12 November 2019