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DogandPonyShow

Workin for the Man!!!
Joined
May 31, 2006
Posts
6
When reading a TAF. When there has been a TEMPO published for the time of arrival at your destination do you use the TEMPO for determing the need for an alternate OR do you use the "non-tempo" info??

Thanks
 
DogandPonyShow said:
When reading a TAF. When there has been a TEMPO published for the time of arrival at your destination do you use the TEMPO for determing the need for an alternate OR do you use the "non-tempo" info??

Thanks
Doesn't TEMPO imply the destination will have thus stated conditions during the period of time noted as TEMPO? If this is your ETA, give and take an hour, I believe alternate requirements have to be considered.

Sorry I'm on this board so much, hope it's not too annoying, I'm mending from 5 broken bones and have way too much time on my hands..
 
d91papa said:
Doesn't TEMPO imply the destination will have thus stated conditions during the period of time noted as TEMPO? If this is your ETA, give and take an hour, I believe alternate requirements have to be considered.

Sorry I'm on this board so much, hope it's not too annoying, I'm mending from 5 broken bones and have way too much time on my hands..

I agree but is it law?? I am unable to locate specifics about it anywhere within the regs.
 
Yes, you must use the worst wx published, even if it's only TEMP or a chance of, etc.
 
Have you ever flown 121, or used exemption 3585? If you have, I believe that if I remember correctly that exemption actually tells you that you must use the TEMPO wx when determining alternate requirements. I know that it is a little off topic, but I know that is one place where it explicitly tells you that you must use the TEMPO. For an alternate I agree with guido, must use the worst forecast wx during your eta.
 
If the tempo shows the wx improving, you must use the ending time. If the wx is supposed to get worse, you use the beginning of the time. ex.. tempo 1315.. If wx is getting better, you use 1500, if wx is getting worse, you use 1300.. hope that helps..
 
Point Blank. Use it. If its there you have to because those conditions are likely to exist between those times. Its in ops specs and regs.
 
Captian Jack said:
Point Blank. Use it. If its there you have to because those conditions are likely to exist between those times. Its in ops specs and regs.

I completely understand why we should use it. Would you happen to know where to find it in the REGS?? I have researched this up and down and cannot find it ;-((((

Hap
 
DogandPonyShow said:
I completely understand why we should use it. Would you happen to know where to find it in the REGS?? I have researched this up and down and cannot find it ;-((((

Hap
Try reading FAR 135.223 (b)
 
d91papa said:
Try reading FAR 135.223 (b)

This is the one I figured that I could quote. I was hopin for one or some info at all that supported the element of tempo specifically.

I think this has been put to rest.

Your responses are all appreciated.
 
DogandPonyShow said:
I completely understand why we should use it. Would you happen to know where to find it in the REGS?? I have researched this up and down and cannot find it ;-((((

Hap

Not mention it is common sense but FAR 135.219 addresses the use of forecast. A tempo is a forecast. You must use the forecast and if a tempo breaks out a specific time period that you will arrive in, you have to use it. I don't think you will find any thing in the regs that specifically states to use the tempo. You will only see statements regarding ETA plus or minus one hour. If the tempo covers that time, you have to use it if it is more restrictive.
 
d91papa said:
Sorry I'm on this board so much, hope it's not too annoying, I'm mending from 5 broken bones and have way too much time on my hands..

How'd you pull that one Papa??

Baja.
 
Going2Baja said:
How'd you pull that one Papa??

Baja.
Bicycle race, doing my Lance Armstrong imitation. We were 1/4 mile from the finish line and the field was really crowded together. The guy to my right did something dumb and took me down with him. I will never race again (promise to my loyal wife!). 3 ribs, collar bone and left hand all have fractures. NJA has been really supportive as I was hanging out at home waiting for my first IOE assignment and have yet to do anything productive for the company!
 
Nice!!! My 1st Triathalon in Hawaii and I got hit by a guy and slammed into the guard raid and ended up with 24 stiches im my arm. Enjoy the time off - I assume it's paid. IOE and 7n7 will be coming around the corner shortly I bet.

Good luck.

Baja.
 
Yeah....I'd take some more of that action.....I'm going to the supermarket tomorrow.....maybe I'll get lucky and bag me a goat herder.
 
DO-82 driver said:
I cut my finger on a beer can while sitting in my Lazy-Boy watching the Olympics. Sports can be a real bitch sometimes!!!!!
Yeah, especially for those of us over 50. My wife says to take up golf, then I could get a cush corporate gig.
 
Back to the thread subject

Interpreting FAR's can be very frustrating, but let's take a deep breath and read it slower. Although we often simplify regs for operational purposes by paraphrasing such as "I only need an alt if its bad wx". 135.223b actually says you are always required to have an alt UNLESS the forecast conditions will be AT LEAST 2000 and 3(or 1500 and 2 added to lowest circling or other applicable approach criteria whichever is GREATER). The key words that indirectly address Temporarily or occasionally are the words "AT LEAST". If you have a forecast of 2 miles with occasional 1/4 mile vis then you don't have "AT LEAST" 2 miles vis, you have "AT MOST" 2 miles vis and "AT LEAST" 1/4 mile vis. I hope that helps and ends your frustration.
 

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