Document ID: chunk:federal_register_of_legislation:F2005L04061:body:0:p11
Version: federal_register_of_legislation:F2005L04061
Segment Type: other
Provision Reference: 
Character Range: 27744–30612

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 that the particular GPS installations meet the appropriate CASA requirements must be included in the AFM.

Note   If predictions indicate that the maximum FDE outage time for the intended RNP 10 operation will be exceeded, RNP 10 operations are to be rescheduled when FDE is available, or RNP 10 predicated on an alternate means of navigation.

         3.5.3.8 Multi-sensor systems integrating GPS (with GPS integrity provided by Receiver Autonomous Integrity Monitoring (RAIM))

      3.5.3.8.1 Multi-sensor systems integrating GPS with RAIM and FDE that are approved using the guidance of FAA AC 20-130A Airworthiness Approval of Navigation or Flight Management Systems Integrating Multiple Navigation Sensors, or equivalent, meet RNP 10 requirements without time limitations.

Note   FAR Part 121 Appendix G is the basis for the approval of INS or IRU.

3.5.4 Aircraft eligibility through data collection — Group 3 for CASR 91.5010

       3.5.4.1Group 3 aircraft are those that use a data collection program to address the appropriate navigational accuracy requirements for RNP 10. The 2 main requirements of a data collection program are:

(a) the applicant must demonstrate that the aircraft and the navigation system give the flight crew navigation situational awareness of the intended RNP 10 route: and

(b) the applicant must demonstrate that the flight crew has a clear understanding of the status of the navigation system, and that failure indications and procedures are consistent with maintaining the required navigation performance.

       3.5.4.2There are 2 methods approved by CASA for data collection:

(a) the sequential method — the operator collects data and plots it against the 'Pass-Fail' graphs to determine if the operator's aircraft system will meet the RNP 10 requirements for the length of time needed by the operator; and

Note   This data collection program meets the provisions of AC 91.U-2(0) Appendix 1.

(b) the periodic method — a hand-held GPS receiver is used as a base line for collected INS data and data collected is analysed in accordance with the procedures set out in the AC to determine if the system is capable of maintaining RNP 10 for the length of time needed by the operator.

Note An approved process is described in AC 91.U-2(0) Appendix 6.

3.5.5 Obtaining authorisation for an extended time limit for INS or IRU systems

       3.5.5.1The baseline RNP 10 time limit of 6.2 hours for INS and IRU systems after the system is placed in the navigation mode may be extended by 1 of the following methods:

(a) integration of the RNP into the aircraft