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Civil Aviation Authority of Singapore

Noise certificate

Learn about aircraft noise certification requirements in Singapore and how to apply for a Noise Certificate.

Last updated 14 May 2026

Aircraft noise certification requirements ensure that aircraft noise levels remain within ICAO‑prescribed limits.

Application process

When to apply

Apply for a Noise Certificate during the registration of the aircraft.

Who can apply

The applicant for the Certificate of Registration can apply.

What are the fees

There are no fees to apply for a Noise Certificate.

What is the processing time

Processing timelines vary by application type and are set out in IC 6/2025 Information circular on service standards for processing of aviation safety instruments related to airworthiness, flight operations and training organisations.

You are encouraged to engage CAAS early to discuss your Noise Certificate application to facilitate timely processing.

How to apply

Phase 1: Pre-application

Inform CAAS prior to submitting an application for a Noise Certificate.

Phase 2: Formal application

Fill in and submit your application on eSOMS together with the required documents. The required documents are:

  • documentary evidence that aircraft complies with ICAO requirements

  • any other document or report that CAAS may require

For more details on the requirements, refer to:

Phase 3: Document evaluation

CAAS will review the application and documents submitted. During this phase, CAAS may request clarifications from the applicant.

Phase 4: Demonstration and inspection

CAAS may request demonstration evidence to ensure compliance with applicable noise standards.

Phase 5: Certification

Upon approval, CAAS will notify the applicant and the Noise Certificate will be available in eSOMS. Each certificate includes a QR code for authenticity.

Note: The aircraft must have a valid Certificate of Registration before the Noise Certificate can be granted. For details, refer to Certificate of Registration

Application for Noise Certificate

To apply, submit your application on eSOMS.

Apply on eSOMS

If eSOMS is unavailable:

What is the validity period

The Noise Certificate for an aircraft remains in force until the aircraft is deregistered, or the certificate is suspended or revoked.

What are the conditions

As the holder of a Noise Certificate, you must ensure that your aircraft continues to comply with the applicable noise certification requirements.

If the noise level or certification standard of your aircraft changes, you must notify CAAS and submit a variation application.

How to vary a Noise Certificate

To vary an existing Noise Certificate, notify CAAS and submit a variation application on eSOMS.

There are no fees for variations to a Noise Certificate.

Legislation, regulations and resources

Contact information  

Flight Standards Division
Contact us using the Enquiries & Feedback Form.