ac 91-004 srvsop - ICAO

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SRVSOP AC 91-004 6. AIRCRAFT MODIFICATIONS (DATABASE UPDATE) If an aircraft system necessary for RNP 4 operations is modified (e.g., change of software), the operator is responsible for validating the RNP 4 routes with the navigation database and the modified system. This may be accomplished without any direct evaluation if the manufacturer verifies that the modification has no effect on the navigation database or path computation. If there is no such verification by the manufacturer, the operator must perform an initial validation of the navigation data with the modified system. 24
AC 91-004 SRVSOP APPENDIX 2 RNP 4 APPROVAL PROCESS a) The RNP 4 approval process consists of two types of approvals, airworthiness and operational. Although the two have different requirements, they must be considered in one single process. b) This process is an orderly method used by the CAA to ensure that applicants meet the established requirements. c) The approval process is made up by the following phases: 1) Phase one: Pre-application 2) Phase two: Formal application 3) Phase three: Documentation evaluation 4) Phase four: Inspection and demonstration 5) Phase five: Approval d) In Phase one - Pre-application, the CAA calls the applicant or operator to a pre-application meeting. At this meeting, the CAA informs the applicant or operator of all the operational and airworthiness requirements that must be met during the approval process, including the following: 1) the contents of the formal application; 2) the review and evaluation of the application by the CAA; 3) the limitations (if any) applicable to the approval; and 4) conditions under which the RNP 4 approval could be cancelled. e) In Phase two – Formal Application, the applicant or operator submits the formal application along with all the relevant documentation, as established in Paragraph 9.1.1 b) of this AC. f) In Phase three – Documentation evaluation, the CAA evaluates all the documentation and the navigation system to determine their eligibility and the approval method to be followed in connection with the aircraft. As a result of this analysis and evaluation, the CAA may accept or reject the formal application along with the documentation. g) In Phase four – Inspection and demonstration, the operator will provide training to its personnel and will carry out the validation flights, if required. h) In Phase five - Approval, the CAA issues the RNP 4 approval once the operator has met the airworthiness and operational requirements. For LAR 121 and 135 operators, the CAA will issue the OpSpecs, and for LAR 91 operators, a LOA. 25
Page 1 and 2: AC 91-004 SRVSOP ADVISORY CIRCULAR
Page 3 and 4: AC 91-004 SRVSOP Note 2.- The term
Page 5 and 6: AC 91-004 SRVSOP p) CFR Code of Fed
Page 7 and 8: AC 91-004 SRVSOP minima were reduce
Page 9 and 10: AC 91-004 SRVSOP c) The FAA AC 20-1
Page 11 and 12: AC 91-004 SRVSOP (c) c) Group 3: Ne
Page 13 and 14: AC 91-004 SRVSOP plan until removed
Page 15 and 16: AC 91-004 SRVSOP The World Geodetic
Page 17 and 18: AC 91-004 SRVSOP 4) Flight crew and
Page 19 and 20: AC 91-004 SRVSOP operations. 11. OP
Page 21 and 22: AC 91-004 SRVSOP 12.1 Operators or
Page 23: AC 91-004 SRVSOP 1. INTRODUCTION AP
Page 27 and 28: AC 91-004 SRVSOP APPENDIX 3 SAMPLE
Page 29 and 30: AC 91-004 SRVSOP APPENDIX 4 SAMPLE

ac 91-004 srvsop - ICAO

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