Subpart C - Instrument Flight Procedure (IFP) Approval

176.39 Instrument flight procedure approval

(a) An applicant approved to publish an IFP shall comply with the requirements of this Subpart at all times.

(b) An applicant shall ensure the compliance of any third parties used whilst satisfying the requirements of this Subpart.

(c) On approval of the IFP design report:

(1) the IFP shall be published in the AIP in accordance with paragraph 176.55 and any conditions that the Governor may prescribe; and

(2) the applicant shall assume continuous ownership and responsibility for the IFP, including data management according to paragraph 176.47; and

(3) the applicant shall be responsible for safeguarding the procedure and the assessment of new obstacles that require a revalidation of the IFP according to paragraph 176.43(b)(4).

176.41 Approval submission

(a) An IFP design report shall be provided to the Governor containing the evidence that the IFP has been constructed, designed, and will be maintained, in accordance with the requirements of this Subpart.

(b) The IFP design report shall contain the following documentary evidence:

(1) Details of the design criteria used in the construction of the IFP, including:

(i) a statement of the procedure’s compliance with respect to the requirements of paragraph 176.45; and

(ii) a comprehensive design rationale in text format; and

(iii) references to those parts of Doc 8168 (Procedures for Air Navigation Services – Aircraft Operations) Volume 2 where a deviation from the standard criteria or policy has been employed.

(2) A description of the procedure, including:

(i) signatures of the procedure designer and nominated checker as designated respectively; and

(ii) waypoint names, type and coordinates; and

(iii) obstacles assessed in the construction of the procedure including height and position coordinates; and

(iv) description of the source of obstacle, terrain and aerodrome data used as applicable in the design of the IFP, as complying with the requirements of paragraph 176.47; and

(v) a diagram detailing the obstacle surfaces used in plan and profile to aid safeguarding assessment as described in paragraph 176.55(b)(2); and

(vi) a procedure chart compliant with the requirements of paragraph 176.55(b)(1); and

(vii) a textual narrative that describes in an unambiguous manner the flight procedure.

(3) A description of the flight test procedure, including:

(i) evidence of aircraft used as required by paragraph 176.51; and

(ii) flight crew and certification approvals as required by paragraph 176.53; and

(iii) the flight test report in accordance with the requirements of paragraph 176.49(g).

176.43 IFP design safety requirements

(a) The applicant shall ensure that the IFP design construction is:

(1) compliant with paragraph 176.45; and,

(2) completed by a Design Organisation approved in accordance with the requirements of Subpart B; and

(3) undertaken with sufficient documented coordination between ATC, the aerodrome certificate holder, Air Traffic Engineering and the Design Organisation where applicable. This shall include:

(i) a review of the obstacles applicable to the procedure with the aerodrome certificate holder prior to any design work; and

(ii) development of the flight check plan, as described in paragraph 176.49, taking into account the requirement for operational ground navigation aids as necessary; and

(iii) validation of both the operational and certification status of all applicable navigation aids.

(b) The applicant shall establish formal records and procedures to ensure that:

(1) there are sufficient cross checks to detect erroneous calculations; and

(2) required separations in the proximity of adjacent air traffic routings are maintained; and

(3) potential navigation database limitations are addressed before the procedure is coded and approved; and

(4) the Governor is informed and a reassessment of the IFP minimum altitudes undertaken when:

(i) there is a potential obstacle infringement of the IFP protected surfaces; or

(ii) there is a potential breach of aerodrome protected surfaces stipulated through aerodrome safeguarding.

(5) a NOTAM to suspend the IFP is promulgated when a potential infringement or breach as specified by 176.43(b)(4) is confirmed.

176.45 IFP design procedures

(a) All IFPs shall be designed adhering to the methodology and design criteria specified in ICAO Doc 8168 (Procedures for Air Navigation Services – Aircraft Operations) Volume 2 ensuring in particular that required obstacle clearances are achieved.

(b) When the IFP being developed is an RNAV based procedure, then the additional requirements from ICAO Doc 9613 (Performance Based Navigation (PBN) Manual) Volumes 1 and 2 shall also apply.

(c) As applicable, the provisions from ICAO Doc 9906 (The Quality Assurance Manual for Flight Procedure Design) in the construction of flight procedures shall apply.

176.47 Provenance of IFP source data

(a) Source data used in the development of IFP procedures shall include, as applicable, all aerodrome, navigation aid, obstacle and terrain data as specified in ICAO Annexes 14 (Aerodromes) and 15 (Aeronautical Information Services).

(b) All data used as the basis for IFP design shall be traceable to source and shall have as a minimum the following metadata available:

(1) the name of the source or entity originating the data; and

(2) the function performed by the source or entity; and

(3) the date at which the function was performed.

(c) The requirements for survey frequency are as follows:

(1) A geodetic connection survey sufficient to meet the requirements of ICAO Annex 14 (Aerodromes) and Annex 15 (Aeronautical Information Services) shall be undertaken for all aerodromes with instrument procedures:

(i) at the time of the initial aerodrome survey; and

(ii) when a more accurate reference frame for WGS-84 becomes available.

(2) A full survey sufficient to meet the requirements of ICAO Annex 14 (Aerodromes) and Annex 15 (Aeronautical Information Services) shall be undertaken for all aerodromes:

(i) at the time of the initial aerodrome survey; and

(ii) if a check survey is not carried out annually; and

(iii) if any doubt exists as to the validity of the previous survey.

(3) A check survey shall be undertaken for all aerodromes on an annual basis following the initial survey to identify any changes, including significant tree growth or reduction, since the previous survey. Any change shall be surveyed to meet the requirements of ICAO Annex 14 (Aerodromes) and Annex 15 (Aeronautical Information Services).

(d) All source data shall only be considered valid for use when the data is traceable according to the requirements of 176.47(b) and the period of last survey complies with the requirements of 176.47(c).

(e) All source data shall be in WGS-84 format as specified in ICAO Doc 9674 (World Geodetic System – 1984 (WGS-84) Manual) and compliant with the requirements of ICAO Doc 9613 (Performance Based Navigation (PBN) Manual) Volume 1 Attachment 2. If source data is unavailable in WGS-84 format, then it shall be converted to WGS-84 prior to use. The source data and converted data shall be made available as required in paragraph 176.41(b)(2).

(f) Source data shall be provided by the relevant aerodrome certificate holder. Where valid source data according to paragraph 176.47(d) is unavailable, the applicant shall conduct a survey to provide baseline data for the purposes of IFP design to meet these requirements.

(g) Where a third party is contracted for the purpose of the survey, the applicant shall ensure that the data is consistent with the requirements of ICAO Annex 14 (Aerodromes) Volume 1 Appendix 5 and Volume 2 Appendix 1, ICAO Annex 11 (Air Traffic Services) Appendix 5 and ICAO Annex 15 (Aeronautical Information Services) Appendix 7, and is accepted by the aerodrome certificate holder.

176.49 IFP Flight check requirements

(a) All IFPs shall be subject to flight check unless specifically permitted otherwise by the Governor.

(b) All IFPs shall be subject to flight check utilising aircraft and aircrew compliant with the requirements of paragraph 176.51 and paragraph 176.53.

(c) The flight check shall be in accordance with ICAO Doc 9613 (Performance Based Navigation (PBN) Manual) Volume 1, Part B Chapter 1 and Doc 8071 (Manual on Testing of Radio Navigation Aids) Volume 2 (Testing of Satellite-based Radio Navigation Systems) Chapter 5 noting that the purpose of the flight check shall be:

(1) to validate the obstacles as shown on the chart and used as the basis for computing minimum altitude; and

(2) to ensure, in particular, the flyability of the procedure in maintaining safe operations for each category of aircraft; and

(3) to review the IFP for complexity of workload, correctness of information and ease of interpretation.

(d) The applicant shall prepare a flight check plan prior to the flight check to accompany the flight check report detailing how the flight check will:

(1) provide assurance that adequate obstacle clearance has been provided; and

(2) verify that the navigation data to be published, as well as that used in the design of the procedure, are correct; and

(3) verify that all required infrastructure, such as runway markings, lighting and communications and navigation sources are in place and operative; and

(4) conduct an assessment of flyability to determine that the procedure can be safely flown; and

(5) evaluate the charting, required infrastructure, visibility and other operational factors.

(e) The flight check plan shall comply with the guidance and recommendations given in ICAO Doc 8071 (Manual on Testing of Radio Navigation Aids) and ICAO Doc 9906 (The Quality Assurance Manual for Flight Procedure Design).

(f) The applicant shall ensure that the flight check report is issued as soon as possible following the flight check.

(g) The flight check report shall be completed according to the templates shown in Appendix A to this Part or as stipulated in ICAO Doc 9906 (Quality Assurance Manual for Flight Procedure Design).

176.51 Aircraft requirements

(a) The aircraft used to conduct a flight check in accordance with paragraph 176.49 shall meet the following minimum requirements:

(1) the aircraft shall be multi-engined and capable of safe flight within the intended operational envelope with a single engine operative; and

(2) the aircraft shall be fully instrument equipped according to requirements for night and instrument flight rules; and

(3) the aircraft shall be capable of being flown at speeds equivalent to categories of aircraft for which the IFP was designed.

(b) As applicable, the aircraft used shall comply with the requirements of ICAO Doc 8071 (Manual on Testing of Radio Navigation Aids) Volume 1 (Testing of Ground Based Navigation Aids) Attachment 1 to Chapter 1.

(c) Evidence of the aircraft’s applicable certifications shall be presented to the Governor.

176.53 Aircrew requirements

(a) Flight validation aircrew:

(1) shall have received suitable training in accordance with ICAO Doc 9906 and relevant to the IFP for which the check is being completed; and

(2) shall be familiar with the test and inspection particular to the type of IFP being checked as detailed within ICAO Doc 8071 (Manual on Testing of Radio Navigation Aids); and

(3) shall be sufficiently trained to be able to recognise anomalous output from aircraft instruments that would require more detailed inspection with a more fully equipped aircraft and crew; and

(4) may be single pilot only when it can be demonstrated to the Governor that flight can be conducted safely and that flight workload is acceptable; and

(5) shall include, where appropriate for the flight check, engineers or technicians able to demonstrate sound knowledge and experience in flight testing and inspection procedures and requirements.

176.55 IFP dissemination

(a) The applicant shall be responsible for dissemination of the IFP and associated documentation to the designated Aeronautical Information Service (AIS) for publication following approval of the procedure by the Governor.

(b) The applicant shall ensure that:

(1) the design and format of the IFP charts are in a standardised format in accordance with the requirements of ICAO Annex 4 (Charts), ICAO Doc 8697 (Aeronautical Chart Manual) and ICAO Doc 8168 (Procedures for Air Navigation Services – Aircraft Operations) Volume 2; and

(2) the aerodrome certificate holder is provided with charts detailing the obstacle surfaces used in plan and profile to aid safeguarding assessment; and

(3) where the IFP is an RNAV procedure, it is described in a clear and unambiguous fashion as detailed in ICAO Doc 8168 (Procedures for Air Navigation Services – Aircraft Operations) Volume 2 and ICAO Annex 15 (Aeronautical Information Services); and

(4) where the IFP is an RNAV procedure, prior to publication, it is validated to ensure that the dataset is complete, coherent and correct; and

(5) the Design Organisation specified by 176.43(a)(2) performs a final check of the published data in the AIP/chart amendment when issued to ensure that no errors have been introduced during the data transfer process.


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