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What do the conditions have to be for your IFR to be void 30 minutes after you file it?

You have to use IFR when it is ranning and thick cloud with about 5-10nm of vis any other weather you can use VFR or IFR as far as i know.


Try doing a VFR flight plan on the setting gray and rainy you will be denied and said to switch to IFR.

You have to use IFR when it is ranning and thick cloud with about 5-10nm of vis any other weather you can use VFR or IFR as far as i know.


Try doing a VFR flight plan on the setting gray and rainy you will be denied and said to switch to IFR.

I think you misunderstood him.
When you file IFR you are given a certain amount of time that your IFR clearance is valid.
Scenario: you have a

You have to use IFR when it is ranning and thick cloud with about 5-10nm of vis any other weather you can use VFR or IFR as far as i know.


Try doing a VFR flight plan on the setting gray and rainy you will be denied and said to switch to IFR.

I think you misunderstood him.
When you file IFR you are given a certain amount of time that your IFR clearance is valid.
Scenario: you have a  release time of 1145UTC and clearance void time of 1200 UTC.
Prior to departure you decide to take a lunch break between 1215 to 1315 UTC. You get a brain cramp and doesnt notify ATC of this.
Not only will your IFR be cancelled they will send a search and rescue team after you aswell. Since you failed to contact ATC 30mins after your void time expired  :)

That's atleast how I understood it, will check my Airlaw-book later, perhaps somelike like Brett Henderson knows more  :)

I knew what he ment but I just typed something random in  :D Yea I think its about 15-30 minutes.

You have to use IFR when it is ranning and thick cloud with about 5-10nm of vis any other weather you can use VFR or IFR as far as i know.


Try doing a VFR flight plan on the setting gray and rainy you will be denied and said to switch to IFR.

I think you misunderstood him.
When you file IFR you are given a certain amount of time that your IFR clearance is valid.
Scenario: you have a

What do the conditions have to be for your IFR to be void 30 minutes after you file it?

It's kind of a self-answering question. Your flight plan is your reservation in the sky.. A time and space slot for you to get where you're going that won't conflict with any other flight plans. That's why they have expriation times.. because obvioulsy, you can't take your place in the sky, if you miss the window.

So.. what are you asking ? If your plan has a 30 minute expiration.. that's what it means. If you don't take off within that 30 minutes, your plan is void, and you'll have to file another.. Weather conditions have nothibg to do with it. An IFR flight plan can be filed (and is by all commercial flights), just because you want/need to be under constant watch. I file IFR all the time on long flights, because it relieves you of the burden of contacting EVERY towerd airspace that you might need to fly through, asking for permission to transition. While filed IFR.. you just keep plugging along and you get handed over to the governing controlers (much better than being told to fly over or around the airspace)

As far as sending emergency crews to look for you.. no. That only happens if you fail to close a VFR flight plan. That's not a concern with an IFR plan, because you cancel that automatically by landing (you're in touch with ATC for the whole flight). With a VFR flight plan.. it's assumed that you took off (because constant ATC contact is not required), and if the plan is never closed (normally by phone after landing), they assume you're lost, or worse.