Questions tagged [clearance]

The permission from air traffic control to take an action, e.g. to land on runway 5.

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16
votes
2answers
18k views

How do you request a “pop up” IFR clearance?

If you are flying VFR into deterioration weather conditions and would like to continue the flight under IFR, or you would like to climb to a better altitude but are restricted by a cloud layer, what ...
27
votes
5answers
6k views

When is an aircraft cleared to land?

In Is there a minimum separation between a landing aircraft and another crossing its runway? it was explained that once an aircraft has clearance to land, that runway is reserved for the exclusive use ...
8
votes
3answers
3k views

When is the descent clearance requested from ATC?

Is there a rule / Standard Operating Procedure as to when request the descent clearance during cruise flight? Something like one minute before reaching the Top of Descent point?
15
votes
1answer
7k views

How do you open and get a IFR clearance while in the air?

I once had a traffic controller give me a hard time about how I requested IFR clearance once in the air. I had previously filed an IFR flight plan, and took off from my untowered home airport. On ...
7
votes
2answers
834 views

When has a pilot legally accepted an ATC clearance or instruction?

At what point is a pilot considered to have accepted an clearance or instruction? Upon simple acknowledgement (e.g., Roger or ...
13
votes
2answers
3k views

What is the correct phraseology for changing the runway of a landing clearance?

In the liveATC clip on this YouTube video, an American Airlines 767 arriving at SFO (San Francisco International) had been cleared to land on 28R, but, apparently while already on final, was told to ...
6
votes
1answer
2k views

Why was this helicopter denied entry to Class B airspace?

This question is somewhat related to this other one. I listened to this exchange between a helicopter and Newark. The helicopter wants to land at Newark. The controller tells the helicopter to ...