19Track deviation monitoring

19 Track deviation monitoring

19.1Deviation from the defined lateral path must not exceed 1 x RNP at all stages of flight.

19.2 To ensure compliance with subclause 19.1, the operator’s procedures must provide for the following:

(a) monitoring lateral tracking;

(b) track deviation alerts and callouts;

(c) flight crew intervention;

(d) regaining track;

(e) discontinuing the operation.

Note RNP AR procedures designed in accordance with proprietary design criteria for use by operators of Australian aircraft require that the standard for track-keeping is applied during turns and no allowance is made for overshoot or undershoot during entry or exit. All turns for these procedures are RF legs.