DGCA (Director General of Civil Aviation) has defined NPNT i.e. No Permission No Take-off as a mandatory compliance for all RPA’s in India. As part of this compliance, the RPA must seek permission from the Digital Sky platform for each flight before take-off. The permission is granted in the form of Permission Artefact (PA) from the Digital Sky platform. Primarily, NPNT has following three functions.
- Permission Control – As part of Permission Artefact, the RPA gets geo-fence within which the RPA must fly. Alongwith the horizontal geo-fence, an RPA gets altitude and time bearing within which it should fly. This is the function of controlling flight permissions for RPA.
- Real-time Monitoring – During the flight, the RPA needs to continuously monitor the geo-fence limits defined in the PA. It needs to continuously check its current position vs. the geo-fence position. If it breaches the geo-fence, the RPA must land and return to home (RTH). During this breach, the RPA must send logs of the breach to Digital Sky every second. This is the function of real-time monitoring that ensures safe flights.
- Auditing – Once a flight is complete, the RPA has to upload all logs of flight operations to the Digital Sky Platform. The logs should be signed by the digital keys stored in the RFM (Registered Flight Module). If incase of any mishap, auditing helps to understand the cause of it. Auditing helps identify the manufacturer, owner and pilot of the RPA so that further investigations can be carried.