121Dispatch
Pre-takeoff checklist
A TAF is issued 4 times a day (scheduled, I'm not talking about AMD/COR/RTD in this scenario).
When a TAF is issued at 2335z for instance, it's valid for 24 hours (valid from 00 to 00). Then another TAF is issued around 0535z (valid from 06 to 06).
Any thoughts on what happens to the 2335z TAF once the new one is issued? Is it still valid? I can't receive the 0535 TAF with worse weather (requiring an alternate for instance), and disregard it by saying, well, the 2335 TAF is better, so I'm going to use that since my flight is within the 24 hour period (I'm talking legality hear, not the smart decision).
I've always been under the impression that a TAF is valid for 24 hours, OR UNTIL SUPERCEDED, but I can't find any wording anywhere that states those words (although I've heard people say this).
Perhaps the reason this wording doesn't exist is so that if you are enroute and a new TAF is issued, you still have a "valid TAF" in your posession. Although, you DEPARTED with a current and valid TAF, so that really shouldn't be an issue, and a pilot should be keeping up with weather updates through FSS/Flight Watch.
Anways, whad'ya think? Superceded TAF still legal, or any source for wording otherwise?
When a TAF is issued at 2335z for instance, it's valid for 24 hours (valid from 00 to 00). Then another TAF is issued around 0535z (valid from 06 to 06).
Any thoughts on what happens to the 2335z TAF once the new one is issued? Is it still valid? I can't receive the 0535 TAF with worse weather (requiring an alternate for instance), and disregard it by saying, well, the 2335 TAF is better, so I'm going to use that since my flight is within the 24 hour period (I'm talking legality hear, not the smart decision).
I've always been under the impression that a TAF is valid for 24 hours, OR UNTIL SUPERCEDED, but I can't find any wording anywhere that states those words (although I've heard people say this).
Perhaps the reason this wording doesn't exist is so that if you are enroute and a new TAF is issued, you still have a "valid TAF" in your posession. Although, you DEPARTED with a current and valid TAF, so that really shouldn't be an issue, and a pilot should be keeping up with weather updates through FSS/Flight Watch.
Anways, whad'ya think? Superceded TAF still legal, or any source for wording otherwise?