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Note: this limited testing assumes that the air-ground surveillance systems have been
shown to satisfactorily perform their intended functions in the flight environment in
accordance with applicable requirements.
To minimise the certification effort for follow-on installations, the applicant may claim
credit, from the Agency, for applicable certification and test data obtained from
equivalent aircraft installations.
9.2 Performance
Where compliance with a performance requirement cannot readily be demonstrated by a
test, then the performance may be verified by an alternative method such as analysis,
including statistical analysis of measurements under operational conditions.
9.3 Aircraft Flight Manual
9.3.1 The Aircraft Flight Manual (AFM) or the Pilot’s Operating Handbook (POH),
whichever is applicable, needs to provide at least a statement of compliance that the
ADS-B System complies with this AMC20-24 and if deviations are applicable. Deviations,
including those stated in this document13, as appropriate may be included or referred to.
9.4 Existing installations
9.4.1 The applicant will need to submit, to the Agency, a compliance statement,
which shows how the criteria of this AMC have been satisfied for existing installations.
Compliance may be supported by design review and inspection of the installed system to
13 Refer to sections 8.3.3, 8.3.5 and 8.8.2.
10(21)
AMC 20-24 Effective: 02/05/2008
Annex II to ED Decision 2008/004/R of 25/04/2008
confirm the availability of required features, functionality and acceptable human-machine
interface.
9.4.2 Where this design review finds items of non-compliance, the applicant may offer
mitigation that demonstrates an equivalent level of safety and performance. Items
presented by the applicant which impact safety, performance and interoperability
requirements allocation will need to be coordinated in accordance with ED-78A.
10 OPERATIONAL CONSIDERATIONS
10.1 General
10.1.1 The installation should be certified according to airworthiness considerations in
section 8 prior to operational approval.
10.1.2 The assumptions in section 5, concerning Air Traffic and Communications
Services Providers, and Aeronautical Information Services, should have been satisfied.
10.1.3 A unique ICAO 24 bit aircraft address should be assigned by the responsible
authority to each airframe.
10.2 Operational Safety Aspects
10.2.1 In all cases, flight crews should comply with the surveillance provisions,
schedules and relevant procedures contained in the Aeronautical Information
Publications (AIP) published by the appropriate authorities.
10.2.2 Direct controller-pilot VHF voice communications should be available at all
times.
10.2.3 If flight crew receive equipment indications showing that position being
broadcast by the ADS-B system is in error (e.g. GPS anomaly), they should inform the
ATSP, as appropriate, using any published contingency procedures.
10.2.4 When there is not an independent Flight Deck Control selection between the
ADS-B function (ADS-B on/off) and the ATC transponder function, the crew must be fully
aware that disabling the ADS B function will also lead to disable the ACAS function.
10.3 Operations Manual and Training
10.3.1 Operations Manual
10.3.1.1 The Operations Manual should include a system description, operational and
contingency procedures and training elements for use of the ADS-B-NRA application.
10.3.1.2 The Operations Manual, preferably section B, should contain the operational
aspects described in this guidance material.
10.3.1.3 Operators operating under the provisions of ICAO Annex 6 Part II “International
General Aviation – Aeroplanes” are not required to have an operations manual.
However, in order to use ADS-B applications, the operator should develop similar
training and operational procedures to the ones described in this guidance material. This
material may need to be approved by the State of Registry of the operator in accordance
with national practice and sight of this approval may be required by the ADS-B
navigation service provider.
10.3.2 Flight Crew Training
10.3.2.1 Aircraft operators should ensure that flight crew are thoroughly familiar with all
relevant aspects of ADS-B applications.
10.3.2.2 Flight crew training should address the:
a) General understanding of ADS-B-NRA operating procedures;
11(21)
AMC 20-24 Effective: 02/05/2008
Annex II to ED Decision 2008/004/R of 25/04/2008
b) Specific ADS-B associated phraseology;
c) General understanding of the ADS-B technique and technology;
d) Characteristics and limitations of the flight deck human-machine interface, including
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