Quick Answer
Drone operations at Indian heritage sites require: DGCA registration of the UAS, Remote Pilot Certificate (RPC/RPL) for the operator, a Digital Sky flight plan with NOC where the site falls outside an uncontrolled Green zone, and separate written permission from ASI (for centrally protected monuments), state archaeology department (for state-listed sites), or HR&CE (for Tamil Nadu temples). The most common error is completing Digital Sky approval without obtaining site-specific heritage authority permission — both are required simultaneously.
The question every heritage drone survey starts with is deceptively simple: 'Can I fly here?' The answer almost always requires checking four overlapping permission systems simultaneously — DGCA airspace zones, Digital Sky flight plan approval, heritage authority site permission, and (in some states) local police intimation.
India's drone regulatory framework, revised significantly in 2021 and 2022, replaced the previous blanket prohibition approach with a zone-based permission system through the Digital Sky platform. For heritage professionals, the key practical change is that many rural heritage sites now fall in uncontrolled Green zones where operations up to 400 feet AGL do not require prior permission. Urban heritage sites — temple complexes in city centres, fort precincts, listed buildings in heritage precincts — present more complex permission requirements.
This guide covers the complete permission pathway for heritage drone survey in India as of mid-2026, including DGCA registration, Digital Sky procedures, ASI permissions, state-specific variations, and on-site documentation requirements.
The Regulatory Framework
India's drone regulation sits across three primary instruments: the Unmanned Aircraft System Rules 2021 (the primary statutory framework), the Drone Airspace Map defining zone classifications (updated by DGCA through Notices to Airmen/SUASPs), and the Digital Sky Platform (the online system for UAS registration, operator certification and flight plan submission).
For heritage documentation specifically, the UAS Rules 2021 interact with the Ancient Monuments and Archaeological Sites and Remains (AMASR) Act 1958 and its amendments — which restrict certain activities within protected areas — and with state heritage legislation. Neither the AMASR Act nor state heritage acts specifically address drone operations, but heritage authorities have established administrative procedures requiring their permission for any aerial photography at protected monuments.
Drone Categories and What They Mean
DGCA drone categories under UAS Rules 2021 — heritage documentation implications
| Category | Weight | Registration required? | RPC/RPL required? | Insurance required? | Heritage use |
|---|---|---|---|---|---|
| Nano | < 250g | No registration for domestic; yes for foreign-manufactured | No — but must comply with operating conditions | No | Close-range inspection at ground level; not suitable for elevation documentation above 15m |
| Micro | 250g – 2kg | Yes — NPNT compliant preferred | Yes — Remote Pilot Certificate | Third-party liability | DJI Mini 4 Pro class; suitable for most heritage facade and site surveys up to medium scale |
| Small | 2kg – 25kg | Yes — unique ID; NPNT mandatory | Yes — Remote Pilot Licence (RPL) from DGCA-authorised instructor | Third-party liability + hull | DJI Mavic 3, Phantom 4 RTK class; most common for professional heritage survey; full NPNT compliance required |
| Medium | 25kg – 150kg | Yes — full type certification | Yes — RPL + additional endorsements | Comprehensive | Rarely used for documentation; some LiDAR and thermal platforms in this range |
| Large | > 150kg | Yes — type certification + airworthiness | Yes — commercial pilot licence + UAS rating | Comprehensive | Not applicable to heritage documentation |
Sub-250g drones and the NOC exemption
Nano-category drones (< 250g) do not require DGCA registration for Indian-manufactured units and do not require an RPL. This has made DJI Mini series drones popular for budget heritage work. However: nano drones still cannot operate in Red or Yellow zones without separate permission; they cannot be flown at ASI monuments without ASI written permission; and their camera resolution and stability limitations make them unsuitable for professional heritage survey at 1:50 accuracy requirements. The registration exemption does not exempt operators from heritage authority permission requirements.
Airspace Zones and Heritage Sites
To check the zone classification of a specific heritage site: visit the Digital Sky platform (digitalsky.dgca.gov.in), use the Airspace Map tool, and enter the site location. The map shows the current zone classification. Note that zone boundaries change — a site that was Green in 2023 may now be Yellow due to new airspace restrictions.
Major Indian heritage sites in constrained airspace: Taj Mahal (Yellow — within Agra Airport zone and restricted areas); Red Fort, Delhi (Yellow/Red — near multiple restricted zones); Hampi (mostly Green — rural Karnataka); Mahabalipuram temple complex (Yellow — near Chennai Airport at 60km distance but within coastal restriction zones in some areas); Chidambaram Natarajar Temple (confirm current — within town but distance from airports varies).
DGCA airspace zone classification — heritage site implications
| Zone | Colour | What it means | Heritage sites typically in this zone | Permission required? |
|---|---|---|---|---|
| Uncontrolled | Green | Operations up to 400ft AGL permitted without prior permission during permitted hours (6am–6pm) | Rural and semi-rural heritage sites; many older temples away from airports and cities | No airspace permission — but heritage authority permission still required |
| Controlled — conditional | Yellow | Requires advance permission through Digital Sky before each flight; permission granted within defined time window | Heritage sites within 8km of airports; heritage sites near sensitive installations | Digital Sky NOC required; plus heritage authority permission |
| Prohibited | Red | No drone operations permitted; permanent prohibition | Heritage sites within restricted areas: defence installations, international borders, Vijay Chowk, certain national monuments | No drone operations possible |
| Temporary Restricted Area | Orange (temporary) | Time-limited restriction during events, VIP movement, etc. | Any heritage site during Republic Day, state events, VVIP visits | Operations not possible during restriction period; check NOTAM before flight |
Digital Sky: What You Actually Need
Digital Sky (digitalsky.dgca.gov.in) is the central platform for all DGCA drone-related registrations and permissions. For professional heritage survey, the steps are:
- 1UAS Registration — Register the drone on Digital Sky; obtain the Unique Identification Number (UIN); for NPNT-compliant drones, the UIN is linked to the drone's remote ID.
- 2Operator registration — Register as a UAS operator (individual or company); upload GST, PAN, address proof.
- 3Remote Pilot Certificate / Licence — RPC for Micro class; RPL for Small and above; obtained through DGCA-authorised training organisations; the RPL requires ground training (minimum 25 hours theory), simulator, and flight test.
- 4Flight plan submission (Yellow zones) — for each flight in a Yellow zone, submit a flight plan: date, time window, location (polygon or radius), max altitude, drone UIN, pilot RPL number; flight permission typically granted within 24–72 hours for standard permissions.
- 5NPNT compliance — for Small and above, the drone must support No Permission No Takeoff (NPNT); the drone's flight controller checks Digital Sky before allowing motors to arm; ensure your drone firmware is NPNT-enabled for operations in India.
Green zone operations: what you still must have
Even in a Green zone, you must have: UAS registration (for Micro/Small/above); RPL (for Small and above); third-party insurance; and heritage authority written permission. The Green zone classification means you do not need a Digital Sky flight plan NOC — it does not exempt you from any other requirement. Flying at a heritage monument in a Green zone without ASI or state heritage permission is still an unauthorised operation.
Heritage Authority Permissions
Heritage authority permission requirements by monument type
| Monument type | Authority | Permission document | Processing time | Contact point |
|---|---|---|---|---|
| Centrally Protected Monument (ASI) | Archaeological Survey of India — relevant Circle Superintendent | Written permission letter on ASI letterhead; specifies date, drone type, area, purpose | 2–8 weeks; apply early | ASI Circle office for the state (e.g. Chennai Circle for Tamil Nadu, Bangalore Circle for Karnataka) |
| State Protected Monument | State Archaeology Department | Written NOC from State Director of Archaeology | 2–6 weeks; varies by state | State Archaeology Department of the relevant state; some have online portals |
| HR&CE temples (Tamil Nadu) | HR&CE Executive Officer of the specific temple | Written permission from Temple EO; Joint Commissioner approval for major temples | 2–4 weeks | HR&CE District Office; temple-specific EO contact |
| Private heritage building (listed) | No formal requirement from heritage authority; but local body (municipal corporation) permission may be needed | Letter from property owner; inform local police station in advance | Days — if owner is cooperative | Property owner directly; local police station intimation |
| Unlisted private heritage | No requirement | Property owner written consent recommended | N/A | Property owner |
The twin permission requirement that most operators miss
Many drone operators obtain Digital Sky flight plan approval and consider their permissions complete. At any heritage monument, you also need written permission from the relevant heritage authority (ASI, state archaeology, HR&CE) — independent of Digital Sky. ASI permission is not linked to Digital Sky in any way. Turning up at a protected monument with Digital Sky approval but no ASI letter will result in the survey being stopped by the monument's ASI guard. Both permissions must be in hand before the site visit.
Step-by-Step Permission Pathway
- 1Identify monument type — check the ASI list of centrally protected monuments; state protected monument list; INTACH listing; confirm heritage authority with jurisdiction.
- 2Check Digital Sky airspace zone — log in to Digital Sky, use Airspace Map; note Green/Yellow/Red status for the site; note any nearby restricted zones that may affect flight path.
- 3Draft heritage authority permission application — letter on company letterhead describing: purpose (heritage documentation for conservation / research / condition survey); drone type and specifications (make, model, category, UIN); flight area (rough sketch or coordinates); date(s) required; pilot name and RPL number; statement that DGCA compliance will be maintained.
- 4Submit heritage authority application — by registered post and email to the relevant authority; follow up by phone after 10 days if no acknowledgement received; for ASI, direct application to the Circle Superintending Archaeologist of the relevant circle.
- 5Submit Digital Sky flight plan (Yellow zones) — after obtaining heritage authority permission (include scan of permission letter in the Digital Sky application); select date, time window, location polygon, maximum altitude (typically 100m AGL for temple survey); submit for approval.
- 6Insurance — obtain or renew third-party liability insurance for the specific flight; some insurers issue per-project endorsements; the policy must cover the UAS model being operated.
- 7On-site documentation pack — carry on site: ASI/heritage permission letter (original); Digital Sky approval (for Yellow zone flights); RPL original or certified copy; UAS registration certificate; insurance certificate; property owner consent letter if applicable.
- 8Pre-flight site check — on arrival, meet ASI monument supervisor / temple trust representative; show permission letter; brief them on the flight plan; agree a contact point during the operation.
State-by-State Variations
State-specific heritage drone permission requirements
| State | State heritage authority | Special requirements | Notes |
|---|---|---|---|
| Tamil Nadu | Tamil Nadu State Department of Archaeology and Museums / HR&CE for temples | HR&CE permission required for all temple surveys; TNPCB may be required for large projects near protected ecosystems | Tamil Nadu has one of the largest inventories of heritage temples; HR&CE permission pathway is well-established but slow — allow 4+ weeks |
| Karnataka | Directorate of Archaeology, Museums and Heritage (DAMH) | Written NOC from DAMH Director; Hampi World Heritage Area has specific restrictions from Hampi WHA Authority | Hampi requires additional clearance from Hampi Area Development Authority (HADA) beyond standard DAMH NOC |
| Kerala | Kerala State Archaeology Department / Devaswom Boards for temples | Travancore Devaswom Board and Cochin Devaswom Board control major Kerala temples — separate permission from the relevant Devaswom Board | Kerala temples not under HR&CE; Devaswom Board permission required |
| Rajasthan | Rajasthan State Department of Archaeology and Museums | Additional clearance from Rajasthan Tourism for monuments in tourism circuit; Jaipur Walled City (UNESCO nomination) has specific aerial photography restrictions | Jaipur, Jodhpur, Udaipur city cores — obtain Rajasthan Tourism and municipal clearance in addition to DAMH |
| Maharashtra | Directorate of Archaeology and Museums Maharashtra | Mumbai: additional MCGM clearance for flights over listed heritage buildings; some precincts require police permission | |
| Delhi | Delhi government does not control ASI monuments in Delhi — contact ASI Delhi Circle directly; South Delhi Municipal Corporation for some heritage areas | Large parts of Delhi are Yellow or Red zone — Digital Sky permission critical; many ASI Delhi monuments are in restricted airspace |
On-Site Protocol and Documentation
On the day of the survey, professional protocol at a heritage site demonstrates the competence and care that justifies the heritage authority's decision to grant permission.
- Pre-flight briefing — brief all ground team members on the flight plan; assign a visual observer for VLOS (Visual Line of Sight) compliance; identify hazard zones (visitor pathways, overhead wires, trees within the flight envelope).
- Public safety — establish a ground exclusion zone around the drone launch point; do not fly over visitors or temple-goers; at active temple sites, coordinate with temple administration to manage visitor proximity during the flight.
- Flight log — maintain a written flight log for each operation: date, time, location, drone UIN, pilot RPL number, flight duration, maximum altitude, any anomalies; this is a DGCA requirement and evidence of professional operation.
- Visitor management at active temples — many South Indian temples under HR&CE have continuous visitor movement; the permission letter should specify that flights will avoid the principal shrine area during puja times; brief the temple EO on proposed flight timing at least one day in advance.
- No commercial broadcasting — permission for heritage documentation does not extend to commercial photography or video broadcast; do not live-stream or post footage from a protected monument on social media without specific additional permission.
Common Mistakes and Consequences
- Flying at a heritage monument with Digital Sky approval but without ASI/heritage authority written permission — operations will be stopped by monument staff; permission revoked for future applications; potential FIR under the AMASR Act (which restricts certain activities at protected monuments).
- Operating a Small-category drone without an RPL — the RPL is not optional for commercial operations; flying commercially without an RPL is an offence under the UAS Rules 2021; penalty provisions include cancellation of operator licence and fines.
- Not checking for temporary airspace restrictions (NOTAMs) on the day of the flight — a NOTAM may impose temporary restrictions over a heritage site due to VIP movement, state events or other factors; check the Digital Sky NOTAM board and AAIB India website on the morning of the operation.
- Assuming rural heritage sites are automatically in a Green zone — zone boundaries change; a quarterly check on the Digital Sky map for frequently used sites is professional practice.
- Using a foreign-registered drone without completing Indian UAS registration — foreign-manufactured drones require UIN registration regardless of the country of purchase; bringing an unregistered drone to a project site is an illegal operation.
Professional Practice
Professional drone survey practice for heritage documentation means building the permission pathway into the project timeline from the first day. Applying for ASI permission four weeks before a planned survey date is the minimum; eight weeks is more reliable for major monuments where the Circle office has a high workload.
Maintaining a permissions register — a simple spreadsheet of project name, monument, permission authority, application date, approval date, approval reference, validity period — prevents the common failure of operating on an expired permission or missing a renewal deadline for ongoing monitoring projects.
The fee for a heritage drone survey professional service should include permission procurement as a separate, clearly priced line item. Clients who have not previously organised heritage drone surveys frequently assume permissions are automatic. Making the permission cost and time explicit at proposal stage prevents the most common project management problem in heritage drone work: the survey date arrives before permissions do.
Key Takeaways
- 1Indian drone regulations require both Digital Sky airspace approval (for Yellow zones) AND separate heritage authority permission (from ASI, state archaeology or HR&CE) — both must be in hand before the survey date.
- 2The Remote Pilot Licence (RPL) from a DGCA-authorised training organisation is mandatory for commercial operation of Small-category drones (2–25kg); most professional heritage survey drones fall in this category.
- 3Green zone classification means no Digital Sky NOC is required — not that the site is unrestricted; all other permissions (heritage authority, insurance, RPL) still apply.
- 4Nano drones below 250g are exempt from DGCA registration but are not exempt from heritage authority permissions; they are also inadequate for professional-standard heritage survey output.
- 5Build 6–8 weeks into the project timeline for ASI permission for major monuments; manage client expectations about permission lead times from the first day of the project.
Frequently Asked Questions
Can I fly a drone at any Indian heritage site if I have Digital Sky approval?
No. Digital Sky approval addresses airspace permission — whether the airspace is clear for drone operations. Heritage monument permission from ASI, state archaeology or HR&CE is a completely separate requirement, administered by a different authority, and is not linked to Digital Sky. Both permissions are required for operations at any protected monument or state/HR&CE-administered heritage site. At private unlisted heritage buildings, Digital Sky approval (if required by the zone) and property owner consent are sufficient.
How long does ASI drone permission take?
ASI Circle offices typically process permission applications in 2–8 weeks, depending on the Circle's workload and the complexity of the project. The Chennai Circle (Tamil Nadu) and Hyderabad Circle tend to process routine documentation applications within 3–4 weeks if the application is complete. Allow 8 weeks for any survey at a major monument (Mahabalipuram, Thanjavur Brihadeeswara, Chidambaram) where the Circle office receives multiple applications and prioritises conservation works over documentation surveys.
What is the Remote Pilot Licence (RPL) and who needs it?
The Remote Pilot Licence (RPL) is the DGCA-issued qualification for operating Small (2kg–25kg) and larger drones commercially in India. It requires completion of a DGCA-authorised ground training course (typically 5 days), simulator assessment, and a practical flying test. The RPL is tied to a specific drone category (Small, Medium, Large) and can be extended to cover multiple categories. For most professional heritage drone survey using DJI Mavic 3, Phantom 4 RTK or equivalent drones (which fall in the Small category), the RPL is mandatory for commercial operations.
Are there drones small enough to fly at heritage sites without registration?
Nano-category drones below 250g (domestically manufactured) do not require DGCA registration. However, they still cannot operate in Red zones, require zone-specific NOC in Yellow zones, and — critically — still require heritage authority written permission at ASI-protected or HR&CE-administered monuments. Most sub-250g drones (DJI Mini series) also lack the camera quality and GPS accuracy for professional-standard heritage survey. The registration exemption is practically useful for low-risk reconnaissance but not for final survey output.
Further Reading
Jabendra Raja
Technical-Commercial Partner, Evergreen Origins
Jabendra Raja leads drone survey and heritage documentation practice at Evergreen Origins, with licensed drone operations at heritage sites across Tamil Nadu and South India.