Document ID: chunk:federal_register_of_legislation:F2018C00889:reg:5:p4
Version: federal_register_of_legislation:F2018C00889
Segment Type: reg
Provision Reference: reg 5 (pt 4/51)
Character Range: 35563–38401

entered data in a navigation system must be checked against other aeronautical information, such as current maps and charts carried in the aircraft (see Note 1 to paragraph 13.10).

14 Operating standards – flight planning – GNSS integrity availability
       14.1 When an RNP APCH is planned at the intended destination or designated alternate as part of flight planning, a prediction for GNSS integrity availability must be obtained from a ground-based source.
       14.2 If a continuous loss of the GNSS integrity function for more than 5 minutes is predicted for any part of the RNP APCH operation, the flight plan must be revised, for example, by delaying the departure time or planning a different route.
       14.3 When an aircraft is operating in oceanic airspace and navigation is based on GNSS, as part of flight planning a prediction for GNSS Fault Detection and Exclusion (FDE) availability for the intended route must be obtained.
       14.4 For oceanic/remote operations, the maximum FDE outage duration cannot exceed 25 minutes for RNP-4 operation, 34 minutes for RNP-10 operation and 51 minutes for minimum navigation performance standards (MNPS) operation.
       14.5 For continental en route operations a prediction for GNSS integrity availability is not required. If a continuous loss of the GNSS integrity function for more than 5 minutes occurs during PBN operations, Air Traffic Control must be advised.
       14.6 For a PBN operation navigating with SBAS receivers, a check must be made for GNSS integrity availability in areas where SBAS is unavailable.
       14.7 Paragraphs 14.1, 14.2, 14.3 and 14.4 do not apply to an aircraft whose RNP system can achieve LNAV accuracy less than 0.3 NM using requisite GNSS satellites.
Note   Requisite GNSS satellites is defined in subsection 4 of this Order.

15 Navigation errors
       15.1 The operator must take immediate action to remedy any condition that led to, or is likely to lead to, navigation error in the course of an RNAV or RNP operation.
       15.2 Without affecting the obligation in paragraphs 13.7, 13.8 and 15.1, each of the following navigation errors or events must be reported in accordance with paragraph 2.4 (i) of the Transport Safety Investigation Regulations 2003:
(a) a lateral or longitudinal navigational error that exceeds the required accuracy value i.e. the RNAV or RNP value, for other than a transient duration during a turn; or
(b) an aircraft system failure that results in the aircraft losing the currently active navigation capability i.e. there is a loss of the navigation function.
Note   Loss of the RNAV or RNP capability in use in the aircraft must be reported but the failure of 1 navigation system in a dual installation need not be reported since the capability to meet the navigation specification requirements has not