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PBN 3D approaches are:

1. GNSS + VNAV
2. GLS
3. PAR
4. RNP 1
5. ILS
6. SBAS

  • A
    1, 2, 3, 4 and 6.
  • B
    1, 2, 4, 5 and 6.
  • C
    1, 5 and 6.
  • D
    1 and 6.

3D APPROACHES

Three dimensional approaches use both lateral and vertical guidance, with the vertical prole provided by the guidance system. A decision altitude (DA) minimum procedure is used.

There are several types of RNP APCH with 3D vertical guidance, and they dier in the way in which they source their vertical guidance information.

  • RNP APCH introduced new types of 3D operations, making use of certified Baro-VNAV systems or the SBAS geometric positioning (RNP APCH to LNAV/VNAV and to LPV respectively);

GNSS + VNAV is a PBN 3D approach: GNSS nav in the horizontal plane and barometric inputs for the vertical plane;

SBAS with vertical guidance (LPV): supported by Satellite Based Augmentation Systems (SBAS) such as EGNOS in Europe and WAAS in the US to provide lateral and vertical guidance.

Instrument landing systems (ILS), Precision Approach Radar (PAR), and ground-based GNSS augmentation landing systems (GLS) are 3D approaches, however these work independently from PBN.
RNP1 is a form of RNAV navigation specification (for arrival, initial, intermediate and missed approach segments).

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