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Questions tagged [precision-approach]

An instrument approach system that provides both lateral and vertical guidance to landing aircraft.

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4
votes
1answer
87 views

What is the lowest RNP approach requirement without being RNP AR?

I was recently told by a friend that as soon as RNP for an approach is below the 1.0/0.3nm standard that it is required to be RNP AR. At least here in Australia, a curved segment anywhere on the ...
2
votes
1answer
572 views

What is an obstacle identification surface and why would a pilot intentionally penetrate it during an ILS approach?

What is an obstacle identification surface? Why would a pilot intentionally penetrate it during an ILS approach?
4
votes
1answer
375 views

Is the callout “minimums” on the 737 used to describe DH on precision approaches

So, I have heard that decision height (DH) is used to signify the height on a precision approach which the pilot has to decide whether to continue or not. But, in the 737, I only hear "approaching ...
5
votes
1answer
742 views

Why are the minimums between these two ILS instrument approaches to the same runway so different?

The minimums for the Van Nuys ILS Z Rwy 16R are 1095/40. The minimums for the Van Nuys ILS Y Rwy 16R are 1461-1 1/2. Question: Why are the minimums for the ILS Z so much lower than the minimums for ...
2
votes
1answer
414 views

How do GLS avionics plot an entire accurate approach path?

I'm studying wireless navigation systems, especially GBAS. I have gone through some ICAO documents regarding GBAS. From what I have read, FAS data is included in Message Type 4. Closer examination of ...
4
votes
1answer
330 views

Approach plate does not require DME, but DME used in the published missed?

This approach plate doesn't say "DME REQUIRED", but the published missed approach uses DME. Can I still fly it without DME equipment? If this approach didn't say "RADAR REQUIRED", could you fly it ...
3
votes
4answers
590 views

Does a Tower controller need to see an aircraft on final to give landing clearance?

If there is an IFR aircraft on approach that has already received an approach clearance, and he reports being at the final approach fix but the controller does not have him in sight yet, can the ...
1
vote
1answer
487 views

Are there any precision approaches that use only GNSS/LAAS?

Is there any airport which has a precision instrument approach using only GNSS (augmented with LAAS) for guidance?