Document ID: chunk:federal_register_of_legislation:F2018C00889:reg:5:p29
Version: federal_register_of_legislation:F2018C00889
Segment Type: reg
Provision Reference: reg 5 (pt 29/51)
Character Range: 102025–105022

between charted navigation information and displayed navigation data may be noted. Differences of 3 degrees or less due to the equipment manufacturer's application of magnetic variation or leg track averaging are operationally acceptable.
       7.6 For RNP 0.3 routes, a lateral deviation indicator, flight director or autopilot in LNAV mode must be used. If the aircraft is approved for RF Legs, the map display under subclause 5.4 must be in accordance with Appendix 10.
Note   Examples of a lateral deviation indicator include CDI and HSI.
       7.7 Where a lateral deviation indicator is used, scaling must be selected suitable for the navigation accuracy associated with the route or procedure, but not greater than a full scale deflection ±0.3 NM.
       7.8 Route centrelines must be maintained as close as practicable, as depicted by lateral deviation indicators or flight guidance, unless authorised to deviate by ATC or under emergency conditions NSE + FTE (lateral deviation) must not exceed the specified navigation accuracy.
       7.9 Brief deviations from the standard mentioned in subclause 7.8 of this Appendix 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.
Note   Flight crew procedures and training must emphasise observance of turn anticipation commands and management of rate of turn.
       7.10 If ATC issues a heading assignment taking the aircraft off a route, the navigation system flight plan may only be modified when:
(a) ATC clearance is received to rejoin the route; or
(b) ATC confirms a new clearance.
       7.11 Manually selecting aircraft bank limiting functions may reduce the aircraft's ability to maintain its desired track and is not recommended. The pilot should recognise manually selectable aircraft bank-limiting functions might reduce ability to satisfy path requirements of the procedure, especially when executing large angle turns. This should not be construed as a requirement to deviate from FM procedures; rather, pilots should be encouraged to avoid the selection of such functions except where needed for flight safety reasons.
       7.12 If the navigation system does not automatically retrieve and set the navigation accuracy from the on-board navigation database for each leg segment of a route or procedure, the flight crew's operating procedures must ensure the RNP 0.3 navigation accuracy for the route or procedure is manually entered into the RNP system.

8 Operating standards – flight procedures – RNP SID requirements
       8.1 Before an eligible aircraft takes-off, the following RNP SID requirements must be verified:
(a) that the aircraft's RNP system is available, is operating correctly and the correct aerodrome and runway data is loaded;
(b) that the aircraft navigation system is operating correctly;
(c) that the correct aerodrome/heliport and departure procedure (including any applicable en route transition)