Document ID: chunk:federal_register_of_legislation:F2018C00889:reg:5:p9
Version: federal_register_of_legislation:F2018C00889
Segment Type: reg
Provision Reference: reg 5 (pt 9/51)
Character Range: 48515–51460

more of the following types or combinations of position sensors:
 (i) VOR/DME;
 (ii) DME/DME;
 (iii) INS or IRS;
 (iv) GNSS.
       5.2 If an aircraft is not equipped with GNSS, it must, nevertheless, have the capability to satisfy the RNAV 5 inertial only time limits for any relevant route on which it is flown.

6 Operating standards – flight planning – general
       6.1 Before an RNAV 5 operation commences, proper consideration must be given to matters that may affect the safety of the operation, including the following:
(a) whether the aircraft and the flight crew have relevant authorisations for RNAV 5;
(b) whether the aircraft can be operated in accordance with the RNAV 5 requirements for:
 (i) the planned route, including the route to any alternate aerodromes; and
 (ii) minimum equipment requirements for the flight;
(c) whether the navaids required for the planned route are available and adequate for the period of the operation, including any non-RNAV contingencies;
(d) whether, if a navigation database is used, it is current and appropriate for the region of operation and includes the navaids and waypoints required for the route;
(e) whether operating restrictions, including time limits, apply to the operation.
       6.2 If the aircraft's essential RNAV 5 equipment is functioning properly, the PBN capability of the aircraft must be indicated in the flight plan.

7 Operating standards – flight procedures – general
       7.1 An RNAV 5 operation must comply with the following:
(a) the instructions and procedures of the OEM in relation to the performance requirements of RNAV 5;
(b) any AFM limitations or operating procedures required to maintain the navigation accuracy specified for RNAV 5.
       7.2 The following checks and cross-checks must be made:
(a) a check that the navigation database is valid;
(b) a cross-check of the flight plan by comparing charts or other applicable resources with the navigation system flight plan and the aircraft map display (if applicable) and, if necessary, excluding specific navaids.
       7.3 Flight progress must be monitored for navigational reasonableness by periodic cross-checks with conventional navaids, where available.
       7.4 Subject to subclause 7.5, the aircraft must be flown to maintain the route centreline as close as practicable.
Note    Piloting standards usually require the aircraft to be flown to maintain lateral deviation not exceeding half the current accuracy requirement (RNP value) or half the lateral deviation scale. Whilst this standard should be observed, pilots must also be aware that Navigation System Error + Flight Technical Error (lateral deviation) may not exceed the specified navigation accuracy.
       7.5 Brief deviations from the standard mentioned in subclause 8.4 are acceptable during and immediately after turns, but only to the minimal extent that accurate cross‑track information may not be provided during the turn.