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Questions tagged [performance-based-navigation]

Performance-based-navigation (PBN) specifics the standards of RNP and RNAV for navigation (inc. approaches).

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4
votes
1answer
308 views

How to calculate ground speed using a map with a known scale and time?

If an aircraft flies from point A to B for a distance of 8cm on a chart of 1:1,000,000 in 18 minutes, What’s the ground speed? It’s a multiple choice question and the possible answers are in ratios. (...
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0answers
45 views

Has FAA published any A-RNP STAR or A-RNP / RNP AR DP SID?

After reading FAA's Performance Based Navigation Strategy 2016, I tried to search for already published Departure Procedures of RNP specification. I could only find some that require RNP-1, even ...
2
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0answers
29 views

Does a Navigation Specification characterize all legs of a terminal procedure?

I am studying the different parts of Instrument Flight Procedures, as they are described by FAA's manuals, such as the Aeronautical Information Manual, TERPS and Performance Based Navigation. For ...
3
votes
1answer
188 views

Which Navigation Specifications support an RF leg?

I am studying FAA's rules concerning navigation specifications and the utilization of RF legs in an Instrument Flight Procedure. However, I am having trouble understanding if an RF leg is supported by ...
3
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2answers
476 views

Why are there no RNAV (ILS) approaches?

While studying the PBN (FAA Order 8260.58A) and TERPS (FAA order 8260.3D) documents, I still have some trouble figuring part of the logic behind the naming and definitions of the published IAP Charts. ...
2
votes
1answer
136 views

How much difference in heading/bearing between consecutive legs is “officially” considered a turn?

While examining FAA's TERPS manual (Order 8260.3D) and PBN manual (Order 8260.58A), I noticed two seemingly contradictory statements. TERPS 8260.3D Chapter 14. Departure Routes, 14-3-4 . Construct ...
0
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1answer
41 views

What are early/inside and late/outside turns (see, e.g., PBN Manual Order 8260.58A) and when do pilots perform them?

While studying FAA's PBN Manual (Order 8260.58A), I came across the concept of early/inside and late/outside turn construction (Section 5-3. Turning Departures). For each of the possible cases, it ...
1
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1answer
53 views

How to accurately determine Navigation Accuracy from FAA's PBN Criteria (Order 8260.58A)?

I am trying to understand how to determine the Navigation Accuracy for a given flight phase of an Instrument Flight Procedure, from the US Standard for PBN Instrument Procedure Design (Order 8260.58A)....
3
votes
1answer
3k views

Is GLS (GBAS landing system) an RNAV approach?

PBN which is contrast to conventional navigation consists of RNAV and RNP. And I know that general RNAV approach of IAP has up to 4 minima such as LPV, LNAV, LNAV/VNAV, and LP. And I know that GLS ...
5
votes
1answer
149 views

Why do some airfields not have a climb gradient for LPV?

Can anyone advise why for some airfields there are minimum approach climb gradients for LNAV with none for LPV, while at other airfields there are minimum approach climb gradients for both LPV and ...
16
votes
3answers
6k views

Why isn't an LPV SBAS approach considered a precision approach according to ICAO?

According to ICAO's classification, LPV SBAS approach is in the APV group, because it doesn't meet some specifications for precision approaches. But what exactly does it not meet? Glossary: LPV: ...