General/Brief ATC Timeline Help

[Origin Airport]

  1. Ground
    –Request pushback
    –Request taxi
    –If (for some reason) instruction not given to request frequency change after progressive taxi instructions: request frequency change.

  2. Tower
    –Request departure
    [Positive rate]
    –If (for some reason) I am not given instructions to change frequencies while approach or departure is staffed: request frequency change.

  3. Approach
    —Flight plan is filed.
    [I am filed to a destination approximately 600 miles from origin airport.]
    –Is it mandatory that I check in?
    –Do I…:
    -1. Request approach to my destination?
    -2. Request flight following to my destination?

I’m assuming you’re having questions about the radar frequency communication? This should help, it has everything you need to know.

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Thank you, @AviationChampion ! Just trying to see if I’m interpreting/understanding everything in the guide. Starting the topic like I can always be wrong and asking questions where I think I am wrong.

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Hey, I’ll be happy to answer some of your questions to clear things out:

  • Ground:

Typically, once you get a taxi instruction, at the end, they’ll instruct you to hand off to tower once you’re ready. (Taxi to runway xx, contact tower when ready). You don’t need to request frequency change as it can be considered redundant, and ATC can scold you with “you were already instructed to change frequency”.

However, with the use of drag and taxi, they can take you to a holding point of a runway that you may need to cross. Here, the handoff instruction won’t be included. However, you still shoudn’t ask for a frequency change as ATC on ground may have other intentions (for example, a runway crossing on ground).

→ TL;DR: Do not request frequency change. ATC will always instruct you to handoff at some point, either with the taxi instruction, or in special situactions.

That’s correct, but I’d be patient with it before requesting it. ATC is usually aware of their airspace, and they’ll know when they’ll instruct you to hand off.

Airspace limit is 50nm, 18000ft AGL, so if you exceed those limits without being handed off, then It’s valid to request. ATC can forget sometimes, and that’s ok.


  • You don’t need to check in; you’ll ask your approach straight away. As a pilot, you can request ILS, GPS, VIS, Radar Vectors, and even Flight Following. However, you should differenciate IFR with VFR.

You may ask VFR or IFR, with the options as follows:

→ Visual Flight Rules (VFR) (Request VIS, Radar Vectors, Flight Following to…)

  • On VIS (FPL can be included here) and Radar Vectors, Approach will vector you to approach to your airport, and they’ll hand you off to tower, usually at base. You need to have visual with your airfield in order to have your approach done.

  • On flight following, since is all about Visual Flight Rules (VFR), it’s your responsibility as a pilot to maintain visual separation with surrounding aircraft. (3nm, 1000ft). Handoff would be quite the same as with RV and VIS.

→ Instrumental Flight Rules (IFR - ILS/GPS)

  • You will simply tune in to approach and request your desired approach and runway. ATC will either let you fly your FPL (FPL is required for IFR approaches), or vector you.

It’s important to remind that ATC can change your approach at their discretion, depending of the airspace and operational needs.


I think that’s it from me. Communicating with ATC can be tricky at first, but once you get the hand of it, this will be easy for you. As always, though, follow ATC instructions.

Let me know if you’ve got any questions.

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Ground: Gotcha’! Yeah, I definitely noticed that on ES. Though, I guess I said if not told only because on TS when controlling and doing Drag & Taxi the message doesn’t end with, “…contact tower when ready.” Definitely hear and heard myself in the beginning,“You were already instructed to change frequencies,” a few times! Haha! Though, when not using D&T on TS it definitely transmits contact tower when ready.

[quote=“JetSuperior5192, post:4, topic:952923”]
You don’t need to check in; you’ll ask your approach straight away.
[/quote] Thank you so much for the clarification! So, was my use of flight following incorrect? I am just confused after just departing and was told to contact departure. The first thing I did with departure was request flight following and I was immediately told to check the user guide.

I don’t know what was up with that ATC, but you were correct. You asked for VFR. The ATC should told you to proceed on course

Checking in is the same as asking for IFR. The “Radar Contact” authorizes you to continue on your FPL.

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Gotcha’! Sorry, like I said I just like going at it like I don’t know at all and ask questions. Again, and as always, thank you, @JetSuperior5192 and @AviationChampion for your time and help!

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No problem. Something I’d like to add.

Checking in, then requesting flight following, isn’t a good practice to do, as you ask for IFR, then VFR. You should choose between “check in” or “flight following”.

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Note taken and I appreciate it! Definitely all coming together and makes sense! Thank you, again!

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When a radar controller issues a Check User Guide [CUG] after a flight following request, it’s typically because the pilot is on an IFR flight plan - the most common example is flight involving class A airspace (18,000 and above).

All published approaches can be flown visually in VMC (visual meteorology conditions). In fact, a visual approach is an ATC authorization for an aircraft on an IFR flight plan to proceed visually and clear of clouds to the airport of intended landing.

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Hi @Ronni_Fuentes

A bit of additional information to assist you:

If you’re operating a commercial airliner with a flight plan and intend on flying above 18,000 feet, you would be considered IFR.

Flight plans including a SID (standard instrument departure), a STAR, or an IFR approach (Visual, GPS, or ILS) are generally IFR, as these are all IFR procedures.

Most VFR flights are general aviation whereas commercial flights are almost always IFR.

That said, if you’re flying IFR:

  • Handoff to departure frequency - check-in is sufficient
  • Center Airspace - check-in is sufficient
  • If you are in Center airspace and are nearing TOD where you will descend via a STAR, request descent via STAR.
  • Approach airspace, request IFR approach to your destination.

Do not request flight following or radar vectors when flying IFR.

Any questions, I’d be happy to assist!

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Everything was already addressed. Thank you for your time. Request for my topic to be closed, please and thank you, @moderators .