Singapore was the host this year to the Steering Group Meeting of the ICAO Committee on Aviation Environmental Protection (CAEP). Held from 1-5 Dec 2025 at the Grand Hyatt Hotel, the meetings convened 34 CAEP members and 20 observers, accompanied by their respective advisors and technical experts.
CAEP is a Technical Committee established by the ICAO Council in 1983 to formulate policies, and standards and recommended policies (SARPs) in relation to aircraft noise and aircraft engine emissions (Annex 16 to the International Convention on Civil Aviation). The Steering Group meets annually in the lead up to the triennial formal CAEP meeting (14th cycle).
As an Associate Member of the International Coordinating Council of Aerospace Industries Associations (ICCAIA), an observer organisation to ICAO Council, AAIS participated in CAEP as part of the 36-member strong delegation of technical experts from ICCAIA. The delegation was led by Mr Olivier Husse (Chair of ICCAIA’s Aircraft Noise and Emissions Committee) and AAIS was represented by members of our Panel of Experts, Mr Mervyn Sirisena and Mr Ivan Neo, and Senior Advisor, Mr K.Y. Sia.
Chief Sustainability Officer and 3rd Deputy DG, Mr Daniel Ng, of the Civil of Aviation Authority of Singapore (CAAS) welcomed the CAEP members on Day 1 and CAAS hosted a wonderful evening reception at Gardens by the Bay. DG Mr Han Kok Juan opened the Day 2 session with an address outlining Singapore’s actions to address sustainability. He highlighted the Air Hub Sustainability Blueprint and subsequent actions to form the Asia Pacific Sustainable Aviation Centre (APSAC) to promote aviation sustainability and SAF, and SAFCo, to procure and manage SAF for the Singapore air hub. To pave the way for SAF adoption in Singapore, legislation has been approved for a passenger levy to be applied to all flights departing Singapore starting 2026.
ICCAIA and AAIS were pleased to host an evening poolside reception on Day 2 at the Goodwood Park Hotel for our delegates. Following welcome speeches by Ms Anouck Barreaux, Mr Olivier Husse and Mr K.Y. Sia, CAEP Chairman Mr Michael Lunter addressed the attendees. Guests then enjoyed local flavours and refreshing drinks while connecting over lively conversations. The poolside setting at the iconic Goodwood Park Hotel offered the perfect backdrop for a relaxed evening after a full day of discussions. AAIS was represented by Management Committee members, Mr Iain Rodger of GE Aerospace and Ms Lee Siu Min of Viasat, and Mr Tan Lye Teck, Mr Mervyn Sirisena and Mr Ivan Neo of our Panel of Experts, and Senior Advisor Mr K.Y. Sia.
In the course of an intense week of meetings, the CAEP Steering Group addressed topics such as aviation fuels, sustainability certification schemes evaluation, CORSIA, LTAG monitoring and reporting, technical matters concerning noise and emissions, various analyses on NOx, forecasting and economics, etc. The CAEP Steering Group concluded its meeting on Friday.
As air traffic continues to double every 15 years, the CAEP meeting reinforced how sustainability is one of aviation’s top priorities. AAIS/ICCAIA supports ICAO as the right place to set international standards and recommended practices for aviation sustainability. Harmonized standards are always preferable over a patchwork of local regulations and it takes the whole ecosystem to achieve impact – manufacturers and MROs, civil aviation authorities, supply chains, airports, airlines, and air navigation service providers. For AAIS, the CAEP meeting in Singapore was an opportunity to glimpse the aviation ecosystem coming together to systematically address issues and drive towards the shared goal of aviation sustainability.
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