Civil Aviation Order 20.91 (Instructions and directions for performance-based navigation) Instrument 2014
9Certain aircraft are deemed to be approved for navigation specifications in Appendices 1, 2, 3 and 4
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9 Certain aircraft are deemed to be approved for navigation specifications in Appendices 1, 2, 3 and 4
9.1Subject to compliance with paragraphs 9.2 and 9.3, an Australian aircraft is deemed to be approved for navigation in accordance with any of the following navigation specifications:
(d) RNP 1.
9.2 The aircraft must be equipped with a GNSS stand-alone system with en route and terminal navigation capability having:
(a) (E)TSO-C129 ( ) authorisation for Class A1 or A2; or
(b) (E)TSO-C146 ( ) authorisation for Class Gamma and operational Class 1, 2 or 3; or
(c) an integrated avionics system using GNSS sensors with (E)TSO‑C129 ( ) Class B1, B2, C1 or C2 authorisation, or (E)TSO‑C145 ( ) Class Beta and operational Class 1, 2 or 3 authorisation as the only primary sensor input to the area navigation function, that is accepted as a stand-alone system for this subsection.
Note The integrated avionics systems referred to are those systems typically installed in US 14 CFR/EASA CS Part 23 or Part 27 aircraft that combine flight displays, communications, radio navigation (VOR and ILS) and area navigation into a single integrated system. (E)TSO C115 multi-sensor systems that utilise independent discrete sensor inputs are not addressed under this subsection.
9.3The aircraft is approved for navigation during a flight in accordance with a navigation specification mentioned in paragraph 9.1 if the AFM or AFMS for the aircraft, as published at the time of the flight, states that the aircraft:
(b) has the GPS capability mentioned in an item of the Table that corresponds to the navigation specification.
| GPS capability(Column 1) | Navigation specification(Column 2) | |
|---|---|---|
| 1 | GPS RNAV EN ROUTE | RNAV 5; RNAV 2 or RNP 2 |
| 2 | GPS RNAV TERMINAL | RNAV 1 or RNP 1 |
Note For example, for the purposes of subparagraph 9.3 (b), if the AFM or AFMS for an aircraft states that the aircraft is capable of GPS RNAV TERMINAL (a “GPS capability”), then the aircraft would be approved to navigate in accordance with RNAV 1 (the corresponding “navigation specification”).
9.5 If the AFM or AFMS for an aircraft states that the aircraft is approved for RF Legs and the aircraft:
(a) meets the requirements of paragraph 9.3; and
the aircraft is taken to be approved for RF Legs in conjunction with RNP 1 operations.