
Drone Flight Approval in Sri Lanka: The Official Process
Last verified 2026-07-19 · Civil Aviation Authority of Sri Lanka (CAASL)
The CAASL drone flight approval process step by step: MOD security clearance, no-objection letters, form CAA/AS/017, insurance, payment and timelines.
By the Sri Lanka Drone Editorial Team · Last reviewed 19 July 2026
Quick answer
Flight approval in Sri Lanka is a two-part official process. First, obtain a security clearance from the Ministry of Defence, submitted at least five days before the operation, together with any no-objection letters from site authorities such as the Department of Archaeology. Second, request operation approval from CAASL using form CAA/AS/017, with the MOD letter and third-party insurance, at least two working days before the operation.
- Responsible authority
- Civil Aviation Authority of Sri Lanka (CAASL)
- Who this applies to
- All operators planning drone flights in Sri Lanka after registration.
- Verification status
- verified against official source
- Last verified
- 19 July 2026
- Last reviewed
- 19 July 2026
Overview of the approval chain
Approval to fly a drone in Sri Lanka is built from several pieces: registration of the aircraft, a defence security clearance, permissions from authorities that control specific locations, and finally the CAASL operation approval that ties it together. Missing any piece means the operation is not approved, even if the others are in place.
Part one: MOD security clearance
The security clearance comes from the Ministry of Defence (MOD) and is described by CAASL as mandatory. The request is submitted by email using CAASL's sample request letter, at least five days before the planned operation. The clearance covers who is flying, what equipment is used, and where and when the operation takes place, so accurate locations and dates matter.

Part two: site authority permissions
In parallel with the MOD request, obtain no-objection letters from authorities that control the intended locations. CAASL's guidance names two common cases: operations over archaeologically important sites require a no-objection from the Department of Archaeology, and operations over conservation areas such as forests, national parks and nature reserves require no-objection letters from the Department of Wildlife Conservation or the Forest Department.
Part three: the CAASL operation approval
The approval request itself is made to CAASL on form CAA/AS/017, submitted at least two working days before the operation, together with the MOD letter and an insurance cover at least covering third-party damage. If any planned location falls within restricted or prohibited areas, the GPS coordinates of those locations are sent with the form.
Payment can be made in person or online; CAASL contacts the applicant by email with payment details before issuing the approval, and online payments carry a bank convenience fee. Once payment is complete, the approval letter is collected in person or sent by email for online payments. The CAASL drone portal indicates that requests are reviewed and answered within ten working days, so realistic lead time planning matters, especially for travel itineraries.
Planning tips that prevent rejections
Check every planned location against the CAASL Drone Zone Map and the Department of Archaeology map before applying, so the application matches what the maps allow. Request time windows generous enough to absorb weather delays. Keep the approval, registration and insurance documents accessible during the operation, and follow the altitude and area conditions in the approval exactly.
Frequently asked questions
How long does drone flight approval take in Sri Lanka?
Plan for the published minimums, at least five days for the MOD security clearance and two working days for the CAASL request, and note that the CAASL drone portal indicates review within ten working days. Two to three weeks of total lead time is a realistic planning assumption.
Do I need approval for every flight?
Operation approval is tied to specified locations and dates. Flying outside the approved locations, dates or conditions is not covered, so new operations generally need new approval. Confirm the scope of your approval with CAASL.
What documents are needed for the CAASL approval request?
Form CAA/AS/017, the MOD security clearance letter, insurance covering third-party damage, any required no-objection letters, and GPS coordinates for locations in restricted areas.
Is the CAASL Drone Zone Map itself an approval?
No. The map is official guidance about zones. It does not by itself constitute flight approval; the approval is the CAASL letter issued through the application process.
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