Document ID: chunk:federal_register_of_legislation:F2005L04061:body:0:p15
Version: federal_register_of_legislation:F2005L04061
Segment Type: other
Provision Reference: 
Character Range: 38206–41409

level to calculate the effect of headwinds can be used.

       3.8.3.7If it is determined that the time limit will be exceeded, the aircraft must fly an alternate route or delay the flight until the time limit can be met.

Note   This evaluation is a flight planning or dispatch task.

Section 3.9 Certification actions related to RNP 10 for CASR 91.5010

3.9.1 Improved performance

       3.9.1.1Aircraft navigation performance may be certified to a new standard to take advantage of the aircraft capability.

       3.9.1.2Improved navigation performance demonstrated through operational data collection does not require the aircraft to be re-certified.

       3.9.1.3For aircraft with INS certified under the US CFR Part 121, Appendix G, additional certification is only necessary for an operator who chooses to certify INS accuracy to better than 2 NM per hour radial error. However, the application to CASA for additional certification must:

(a) address all standards associated with maintaining the required accuracy and training programs, including accuracy and reliability, acceptance test procedures and maintenance procedures; and

(b) identify the standard against which INS performance is to be demonstrated.

Note   This standard may be a regulatory (i.e. CFR Part 121, Appendix G), industry or applicant unique specification. An amendment to the AFM identifies the accuracy standard used for certification (see paragraph 3.5.2.3).

       3.9.1.4FAA AC 20-138A also provides an acceptable means of complying with installation requirements for an aircraft that uses GPS but does not integrate it with other sensors.

       3.9.1.5FAA AC 20-130A describes an acceptable means of compliance for multi‑sensor navigation systems that incorporate GPS.

       3.9.1.6An operator who intends to use GPS as the only navigation system (eg no INS or IRS) for RNP 10 operations must comply with Australian and other State requirements, other than specific GPS requirements mentioned in this MOS.

3.9.2 Equipment configuration — MEL

       3.9.2 1The equipment configuration used to demonstrate the required accuracy must be identical to the configuration that is specified in the MEL.

3.9.3 Equipment configuration — accuracy

       3.9.3.1The equipment configuration used to demonstrate the required accuracy must be supportable in RNP 10 oceanic and remote airspace.

       3.9.3.2For example, the statistical benefit of estimating position using INS position data filtered with DME data will not be considered by CASA as part of its review of the application for RNP 10 operational authorisation.

3.9.4 Equipment installation — regulations

       3.9.4.1The design of the installation must comply with the design standards that apply to the aircraft being modified.

       3.9.4.2The installation in an Australian registered aircraft must be performed in accordance with the applicable regulations.

Section 3.10 Training programs, operating practices and procedures for CASR 91.5010

3.10.1 Introduction

      3.10.1.1 Standardised RNP 10 training programs and operating practices and procedures must be incorporated into existing operator programs and procedures.

      3.10.1.2