Captive balloons that are usually helium-filled and measure up to 3 meters in any linear dimension may pose a threat to aircraft safety. Although anchored to stationary points, if released, these balloons may drift to heights that could affect aircraft operations.

As such, hoisting of captive balloons is allowed subject to the following restrictions:

Area/Height	Up to 130 feet	Up to 290 feet	Above 290 feet
Within 1km of the flight funnels* of an airport or an airbase	Permit from the Civil Aviation Authority of Singapore (CAAS) required	Permit from the Civil Aviation Authority of Singapore (CAAS) required	Permit from the Civil Aviation Authority of Singapore (CAAS) required
Outside of the flight funnels* within 5km of an airport or an airbase	Notification to the Civil Aviation Authority of Singapore (CAAS) required	Permit from the Civil Aviation Authority of Singapore (CAAS) required	Permit from the Civil Aviation Authority of Singapore (CAAS) required
Outside 5km of an airport or an airbase	Notification to the Civil Aviation Authority of Singapore (CAAS) required	Notification to the Civil Aviation Authority of Singapore (CAAS) required	Permit from the Civil Aviation Authority of Singapore (CAAS) required

* The flight funnel of an airport or an airbase is the volume of airspace enclosing the path taken by aircraft when taking off from and landing at an airport or airbase.

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4 questions

What will happen if I hoist a captive balloon in areas where it is restricted?

How do I notify CAAS or apply for a permit to hoist a captive balloon that exceeds permitted heights and areas?

How can I ensure that a captive balloon does not pose a threat to aircraft safety?

Can I hoist captive balloons in Singapore?