121 Reg Question - Landing

[Steveair]

Does anyone know the # of the reg for landing under IFR / 121?

I'm trying to find where it says what to do if you are cleared for an approach but then tower reports a lower visibility / what you have to do...

Thanks in advance

 

[Steveair]

Furthermore... if you are inside the FAF (part 121), have been cleared, tower reports it's below mins, can you land and say you had the flight visibility or does it have to be reported?

 

[KeroseneSnorter]

Outside the FAF if you get a weather report lower than minimums you cannot start the approach. Do not have the reg handy but that is the jist of it. Below mins, not legal to proceed.

Once inside the FAF if weather is reported below mins, you are legal to continue.....but you run into the catch 22. Some contend that if you actually do land you could possibly be violated for busting mins. However since flight visibility was obviously at or above minimums, since you could see to land, how could you be violated? Gray area here. I have seen different airlines take different approaches to this problem. Some go with continuing, and others have you go missed no matter when the low vis report was given. Most kind of leave it up to the PIC, a sort of, "here you go, here is the legal risk, we wash our hands of any legal problems"

The one thing that I always asked was, "Is it tower vis., or RVR?" Tower visibility and flight visibility can be two very different things. I doubt anybody would complain about continuing to a landing based on tower visibility, if you had the flight visibility. RVR however is a different story, I would not continue if RVR dropped after crossing the FAF. Kind of hard to dispute an electronic light beam mounted on the side of the runway in the FAA's eyes.

So to answer in the short form. Before FAF= No After= Yes........sort of!!

 

[GIVDrvr]

121.651

For 135 folks OpsSpec C074 Note 1 does not permits this for visibility values below 1/2SM.