Document ID: chunk:federal_register_of_legislation:F2005L04061:body:0:p10
Version: federal_register_of_legislation:F2005L04061
Segment Type: other
Provision Reference: 
Character Range: 25069–28010

have been approved under CFR Part 121

      3.5.3.4.1 INSs or IRUs approved under Appendix G of FAR Part 121 meet RNP 10 requirements for up to 6.2 hours of flight time.

      3.5.3.4.2 For 3.5.3.4.1, the flight time starts at the later of when the system is placed in the navigation mode or the last time the systems are updated.

      3.5.3.4.3 If systems are updated during en route, the effect that the accuracy of the update has on the time limit must be included in the operator's application (see subclause 3.5.6).

      3.5.3.4.4 The requirements of FAR 121.355 and FAR Part 121 Appendix G for INS accuracy, reliability, flight crew training and maintenance, and any requirements associated with Class II navigation, apply to RNP 10 operational authorisation.

         3.5.3.5 Aircraft equipped with dual INSs or IRUs approved Minimum Navigation Performance Specification (MNPS) or approved for RNAV operations in Australia

      3.5.3.5.1 Aircraft equipped with dual INSs or IRUs approved to MNPS or approved for RNAV operations in Australia meet RNP 10 requirements for up to 6.2 hours after the system is placed in the navigation (NAV) mode or following an en‑route update.

      3.5.3.5.2 For 3.5.3.5.1, if systems are updated during en-route, the effect that the accuracy of the update has on the time limit must be included in the operator's application (see subclause 3.5.6).

         3.5.3.6 Aircraft equipped with a single INS or IRU and a single GPS approved for primary means navigation

      3.5.3.6.1 Aircraft equipped with a single INS or IRU and a single Global Positioning System (GPS), approved under FAR Part 121 Appendix G for primary means of navigation in oceanic and remote areas, meet the RNP 10 requirements without time limitations.

      3.5.3.6.2 The minimum standard for a GPS receiver is TSO-C129a with an approved dispatch Fault Detection and Exclusion (FDE) availability prediction program.

      3.5.3.6.3 RNP 10 operational authorisation is subject to the following conditions:

(a) the maximum allowable time for which the FDE capability is projected to be unavailable is 34 minutes;

(b) a statement that the particular INS or GPS installation meets the appropriate CASA requirements is in the AFM.

         3.5.3.7 Aircraft equipped with dual GPS approved for primary means of navigation

      3.5.3.7.1 Aircraft equipped with dual GPS approved for primary means of navigation in oceanic and remote areas under Appendix 1 of FAA AC20-138A meet the requirement for RNP without time limitations.

      3.5.3.7.2 For 3.5.3.7.1, the minimum standard for the GPS receivers is dual TSO authorised equipment and an approved dispatch FDE availability prediction program for use with operations.

      3.5.3.7.3 RNP 10 approval is subject to the following conditions:

(a) the maximum allowable time for which the FDE capability is projected to be unavailable is 34 minutes;

(b) a statement