Wx Minimums 121

[airviationpapii]

If a flight is over it’s destination and diverts to its destination alternate, what Wx minimums apply?

600-2
800-2

Or

APCH plate minimums.

Very basic question but I need clarification please!

Also can someone please explain the 300-1 rule!

 

[MIADX]

121.631 (b) has the answer in my opinion. Key word in the first sentence being continue. The point at which the flight is no longer continuing to the destination (the diversion has been initiated) alternate mins no longer apply.

 

[Htown19]

If you are actively heading to an airport then just approach plate mins unless a high mins captain. Then you add your hundred and a half

 

[PiperLady]

If a flight is over it’s destination and diverts to its destination alternate, what Wx minimums apply?

600-2
800-2

Or

APCH plate minimums.

Very basic question but I need clarification please!

Also can someone please explain the 300-1 rule!

altnernate becomes destination therefore approach plate mins are what you use

 

[DutchArgo]

Agree with all answers above... ALT mins are for planning purposes only to be legal. Once a decision to divert is made, then you revert to landing mins..

 

[airviationpapii]

Agree with all answers above... ALT mins are for planning purposes only to be legal. Once a decision to divert is made, then you revert to landing mins..

Thank you all!!

 

[airviationpapii]

121.631 (b) has the answer in my opinion. Key word in the first sentence being continue. The point at which the flight is no longer continuing to the destination (the diversion has been initiated) alternate mins no longer apply.

Ty!!!

 

[gopherdx]

A good way to look at it is if you planned a precautionary alternate originally (C055 still must be applied whether precautionary or not) and then decided to remove said alternate to allow for more holding fuel but then decide to change your destination to that originally planned alternate, then the same goes.. plate mins.

 

[sixxis]

The 600-2 (precision) and 800-2 (non-precision) are the standard ceiling and visibility requirements in order to *list* an airport as an alternate. Once your nose is pointed at the alternate it has become your new destination therefore approach plate minimums apply.

The 300-1 rule is regarding a high minimum captain heading to an alternate.

For a high minimum captain at regular, refueling, and provisional airports the approach plate minimums are to be increased by 100 - 1/2. For an *alternate* airport with a high minimum captain, you can use approach plate minimums but in no event can they be less than 300-1. If the approach plate minimums at the alternate are below 300-1 then you increase them to 300-1 to adjust for your high minimum captain. 121.652(a)