Document ID: chunk:federal_register_of_legislation:F2018C00889:reg:22:p9
Version: federal_register_of_legislation:F2018C00889
Segment Type: reg
Provision Reference: reg 22 (pt 9/26)
Character Range: 190759–193683

(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. When carrying out approach operations, if the GNSS Horizontal Protection Limit (HPL) exceeds 0.15 NM, the allowable lateral deviation will be limited to less than the half scale value.
       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 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 smallest navigation accuracy for the route or procedure is manually entered into the RNP system.

8 Operating standards – flight procedures – SID requirements
       8.1 Before an eligible aircraft takes-off, the following A-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 runway and departure procedure (including any applicable en route transition) is entered in the navigation system flight plan and properly depicted;
(d) that, if an RNP departure procedure is assigned and the runway, procedure or transition is subsequently changed, the appropriate changes are entered in the navigation system flight plan, properly depicted and available for navigation.
Note   It is recommended that, within the constraints of normal operations, there be a final check of proper runway entry and correct route depiction, shortly before take-off.
       8.2 The operator must ensure that each member of the flight crew is aware of the functional limitations of relevant A-RNP systems and the correct application of manual tracking procedures.
       8.3 The RNP system must be selected and available to provide flight guidance for lateral navigation no later than 153 m (or 500 ft) above the aerodrome field elevation.
Note   The altitude at which navigation guidance begins on a given route may be higher, for example, "climb to 304 m (or 1 000 ft), then direct to X….".
       8.4 For an RNP operation, an authorised method must be used to achieve an appropriate level of performance for the selected procedure, for example, lateral deviation indicator, navigation map display, flight director or autopilot.
       8.5 The GNSS signal must be acquired before the take-off roll commences.
       8.6 For aircraft using (E)TSO-C129a stand-alone equipment, the departure aerodrome must be loaded into the flight plan in order to achieve the