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Questions tagged [performance-based-navigation]

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

2
votes
1answer
84 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
votes
1answer
33 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
vote
1answer
31 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)....
2
votes
1answer
601 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
118 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
5k 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: ...