Ministry of Civil Aviation, GoI has been taking numerous steps towards regulating as well as making the drone business one of the promising sector. Aviation World Magazine in its endeavor to highlight pertinent issues of the drone sector publishes content written be industry experts so that readers’ can be updated with all new guidelines. BY ARUN SASIDHARAN Drones have proven to be among the most promising technologies from the fourth industrial revolution.Worldwide, commercial drones are finding widespread application in law enforcement, disaster management, photography, film making, agriculture, last mile logistics, healthcare, visual inspections, and mapping. Evolution of drone regulations in India. The commercial use of drones in India has been limited by policy paralysis for years. In October 2014, Directorate General of Civil Aviation (DGCA), decided to put a near-blanket ban on drones operations due to lack of regulatory framework and infrastructure for safe operation. Since then, DGCA has been endeavouring to put in place appropriate procedures and policies to ensure regulated use of drones in country. As a result, in December 2018 DGCA issuedthe Civil Aviation Requirements (CAR) for operating unmanned aircraft in India. Since managing low-level airspace and drone traffic operations manually was a daunting task for government, the drone regulations envisaged automated software based management of drone operation through a Digital Sky Platform. The Digital Sky Platform is the first-of-its-kind national unmanned traffic management (UTM) platform that implements “no permission, no take-off” (NPNT). NPNT system aims to prevent unauthorized flights and to ensure public safety, any drone without a digital permit to fly will not be able to take-off. Implementation Woes in Digital Sky For operating unmanned aircraft, DGCA requires that the operators, pilots, trainers, manufacturers and unmanned traffic management service providers shouldconfirm with stringent set of approvals and compliances. Digital Sky is the only one mean of obtaining all permits, licenses, and authorisations for drone operations, manufacturing, training and traffic management. The first stage of Digital Sky is yet to be fully implemented and delay in its implementation is becoming a bottleneck for drone industry. As shown in figure below, Digital Sky has a complex technology architecture having multiple stake holder across industry and interconnected processes. Airports Authority of India (AAI) is the nodal authority responsible for the development, maintenance and technical operation of the DigitalSky Platform on behalf of DGCA. To illustrate the concept of interconnected procedures, take an example ofan operator who wishto obtain UAS Operator Permit (UAOP) to fly a small category drone. The operator will need pilotswith DGCA license, while the drone training infrastructure in the countryitself is still evolving. To address non-availability drone training facilities, MoCA designated around 13existing flying schools as Flying Training Organisations (FTO) for unmanned aircraft in mid-2020. The drone pilot trained by these FTOs, needs to apply through Digital Sky for a license, based on which the DGCA willconduct exam and grant RPA License. Currently these functionality is reportedly not available inthe Digital Sky. DGCA approved drone pilot license, is a mandatory requirement to obtain UAS Operator Permit (UAOP) through Digital Sky.Since the whole processes is not yet established, not a single UAOP has been allotted to any operator. Every drone of Micro category (>250 gm) and above needs to have Unique Identification Number (UIN) akin to the number plate of car. However, as per Digital Sky portal data in December 2020, only 41 drones in India has been issued UIN. This obviously means that nearly all micro drones and above operating in India are not complaint with DGCA requirements. Challenges in NPNT Initiative and Opportunities for Indian OEMs All drone having take-off weight of greater than 250 gram are required to be NPNT complaint. NPNT ensures that a UAS does not take-off without a signed and encrypted digital permission known as the Permission Artefact (PA). In July 2020, the first Digital Sky enabled NPNT (No Permission No Takeoff) drone flight in India was successfully put to test using Asteria’s A200 micro drone. Though the NPNT functionality is claimed to be validated, there is still a long way to go before itcan be practicallyutilized by the end users. To illustrate, NPNT requires end-to-end traceability and this can be achieved only by undisputable identification of a drone through its registered flight module (RFM). The RFM is required to be implemented at the Flight Controller Level of the drone. A NPNT compliant RFM should allow for secure storage to store the digital identifiers for a drone. A Permission Artifact is an electronic document generated by the Digital Sky platform which specifies the permitted parameters for a flight. An RFM should be able to accept a Permission Artifact (PA) and the RFM should allow the drone to be armed only when the PA is validated. From the explanation above, it is clear that drone manufacturers will have to make firmware and hardware level changes in the flight controller, for compliance with NPNT. Also, the communication between drone and the digital sky will be happening through intermediaries like Ground Control Software, Registered Flight Module Provider and unmanned traffic service providers. This will necessitate a standardized communication interface for the external applications to interact with RFM’s permission artefact. NPNT initiative to safeguard the skies is considered a bold step. However, it is clear that NPNT bring extremely high level of technological complexities for all stakeholders and seamless integration will be a challenge. NPNT can also result in increased cost of compliance for end user. Prominent drone manufacturer DJI told that they don’t intend to make their drones NPNT complaint for India.Requirement to tweak drone hardware for compliance was reported to be one of the reason. Presently, DJI has a massive presence in India despite its drones not complying with India’s current drone regulations. Many leading industry figures are proposing Remote ID system of drone monitoring as an alternative to NPNT. Remote IDsystem only require firmware level changes and can also be used by drone pilotto submit flightplan for approval. In case the operator do not adhere to approved flight plan,