This is related to my earlier question.

Delhi has a lot of areas with restricted airspace and no fly zones. Assuming we are able to get the necessary licenses and permissions to fly, what should we do if we accidentally enter no fly zones while in controlled flight?

The altitude will be less than 400 meters.

Once (and if) we are clear of the no fly zone, where should we report the incident?

This is a hypothetical question. I do not intend to break any laws knowingly.


1 Answer 1


Well this one I can answer even without being an expert on India's airspace regulations: Entering a "no-fly zone" or other restricted area with an aircraft - even an unmanned one - is going to be some kind of a violation. You local authorities could tell you what kind, but it doesn't matter: it's a situation to be entirely avoided.

You should plan your test flights to occur far, far away from such restricted areas (as well as from airports, population centers, "open-air gatherings of people" (to use the FAA's parlance), or anything else that you might disturb, damage, destroy, or annoy during your testing.
This is almost certainly what the DGCA is going to tell you if you contact them and ask for advice on test parameters for an Unmanned Aerial Vehicle, but more importantly it's just plain good old fashioned Common Sense!

If you cannot exercise such common sense you should rethink & rework your plans until you can.
If after real, honest rethinking you're still in a situation where you feel you may inadvertently penetrate controlled or restricted airspace then coordinate with the agencies that handle that airspace PRIOR TO YOUR TESTING to make appropriate arrangements.

Now if you exercised all due common sense and still the absolute worst happens (Murphy's law rears its ugly head and LITERALLY everything that can go wrong does - even the engine cutoff and the emergency self-destruct didn't work!) you may still accidentally wander into airspace you shouldn't be in.

If that DOES happen your procedures should be effectively the same as they are in a manned aircraft anywhere in the world if you encounter the same situation: Communicate, Confess, and Comply.
Contact the controlling authority (e.g. tower, approach, the military division responsible, etc.), let them know what's happened, tell them where you are (in this case, where your drone is - they'll likely ask you to copy a number if they want to find out where "home base" is), and comply with any instructions they give you.
(This may mean you need a radio and a list of frequencies on the ground with you - picking up a sectional chart would be a good idea. You may also need a radio-relay in your UAV depending on what kind of range the vehicle has...)

Yes, the controller might get a little snippy with you (you are after all somewhere you're not supposed to be. Controllers tend to not like that!), and you might get in a little trouble for the violation (because again, you're somewhere you're not supposed to be), but that's all preferable to the potential alternative of smacking your UAV into a plane full of people at 300 feet on short final to Indira Gandhi International Airport.
As with all aviation operations, safety must be your overriding concern.

  • $\begingroup$ The restricted airspace (that I am talking about) in urban Delhi is primarily VIP residences such as the President's Estate, Prime Minister's Estate and Office, Minister's living accommodations, etc. There are lots of open areas and population density is probably the lowest in these areas. We understand safety. My main question was what should be done immediately when we realise we have entered such an area. Maintain straight course? Maintain altitude but change direction? Contacting any authority will take much longer than any of these immediate steps. $\endgroup$
    – asheeshr
    Dec 26, 2013 at 5:15
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    $\begingroup$ IMHO the answer isn't a what, its a don't -- any answer other than "don't" is inherently wrong, and any operation that puts you at risk of this sort of violation is probably a Bad Idea. If you want a "what" though, ask yourself: "What would the procedure be in a manned aircraft?" In my (US) training I was generally taught that if something like this happens I should "exit by the most expedient route" (which is usually a best-rate 180-degree turn), while attempting to implement "Communicate, Confess, and Comply". $\endgroup$
    – voretaq7
    Dec 26, 2013 at 6:13
  • $\begingroup$ Incidentally, if India has something equivalent to NASA's ASRS program reporting the incident to that program would be an important thing to do as well -- I didn't see anything equivalent on the DGCA website, but that's a pretty massive site :) $\endgroup$
    – voretaq7
    Dec 26, 2013 at 6:15
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    $\begingroup$ What would the procedure be in a manned aircraft? I wouldn't know specifics, (I am not a pilot) which was the whole reason behind the question :) $\endgroup$
    – asheeshr
    Dec 26, 2013 at 6:17
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    $\begingroup$ @AsheeshR The procedure any flight instructor would teach you is "don't" :-) But if you do, what I mentioned in my comment above is the advice I always got - get out by the fastest route, while trying to talk to someone to tell them what you did. (The assumption in manned aircraft being when you get someone on the radio and explain what happened they'll help you keep it from happening again until you get yourself sorted out.) $\endgroup$
    – voretaq7
    Dec 26, 2013 at 6:25

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