Page 395 - UK Air Operations Regulations 201121

Part CAT - ANNEX IV - Commercial Air Transport Operations

carried. This may be accomplished by the carriage of an additional VOR receiver or
a GNSS receiver approved for IFR operations.
(2) For IFR operations without ADF, the operator should ensure that:
(i) route segments that rely solely on ADF for navigation are not flown;
(ii) ADF/NDB procedures are not flown;
(iii) the minimum equipment list (MEL) has been amended to take account of the
non- carriage of ADF;
(iv) the operations manual does not refer to any procedures based on NDB
signals for the aeroplanes concerned; and
(v) flight planning and dispatch procedures are consistent with the above
mentioned criteria.
(3) The removal of ADF should be taken into account by the operator in the initial and
recurrent training of flight crew.
(e) VHF communication equipment, ILS localiser and VOR receivers installed on aeroplanes
to be operated in IFR should comply with the following FM immunity performance
standards:
(1) ICAO Annex 10, Volume I - Radio Navigation Aids, and Volume III, Part II - Voice
Communications Systems; and
(2) acceptable equipment standards contained in EUROCAE Minimum Operational
Performance Specifications, documents ED-22B for VOR receivers, ED-23B for
VHF communication receivers and ED-46B for LOC receivers and the
corresponding Radio Technical Commission for Aeronautics (RTCA) documents
DO-186, DO-195 and DO-196.
CAT.IDE.A.345 AMC3 Communication and navigation equipment for operations under IFR or under VFR over routes not navigated by
reference to visual landmarks
FAILURE OF A SINGLE UNIT
Required communication and navigation equipment should be installed such that the failure of any
single unit required for either communication or navigation purposes, or both, will not result in the
failure of another unit required for communications or navigation purposes.
CAT.IDE.A.345 AMC4 Communication and navigation equipment for operations under IFR or under VFR over routes not navigated by
reference to visual landmarks
LONG RANGE COMMUNICATION SYSTEMS
(a) The long range communication system should be either a high frequency/HF-system or
another two-way communication system if allowed by the relevant airspace procedures.
(b) When using one communication system only, the CAA may restrict the minimum
navigation performance specifications (MNPS) approval to the use of the specific routes.
CAT.IDE.A.345 GM1 Communication and navigation equipment for operations under IFR or under VFR over routes not navigated by
reference to visual landmarks
APPLICABLE AIRSPACE REQUIREMENTS
For aeroplanes being operated under European air traffic control, the applicable airspace requirements
include the Single European Sky legislation.
CAT.IDE.A.345 GM2 Communication and navigation equipment for operations under IFR or under VFR over routes not navigated by
reference to visual landmarks
AIRCRAFT ELIGIBILITY FOR PBN SPECIFICATION NOT REQUIRING SPECIFIC APPROVAL
(a) The performance of the aircraft is usually stated in the AFM.
(b) Where such a reference cannot be found in the AFM, other information provided by the
aircraft manufacturer as TC holder, the STC holder or the design organisation having a
privilege to approve minor changes may be considered.
(c) The following documents are considered acceptable sources of information:
(1) AFM, supplements thereto, and documents directly referenced in the AFM;
(2) FCOM or similar document;
(3) Service Bulletin or Service Letter issued by the TC holder or STC holder;
(4) approved design data or data issued in support of a design change approval;
(5) any other formal document issued by the TC or STC holders stating compliance with
PBN specifications, AMC, Advisory Circulars (AC) or similar documents issued by
the State of Design; and
(6) written evidence obtained from the State of Design.
(d) Equipment qualification data, in itself, is not sufficient to assess the PBN capabilities of the
aircraft, since the latter depend on installation and integration.
(e) As some PBN equipment and installations may have been certified prior to the publication
of the PBN Manual and the adoption of its terminology for the navigation specifications, it is
not always possible to find a clear statement of aircraft PBN capability in the AFM.
However, aircraft eligibility for certain PBN specifications can rely on the aircraft
performance certified for PBN procedures and routes prior to the publication of the PBN
Manual.
(f) Below, various references are listed which may be found in the AFM or other acceptable
documents (see listing above) in order to consider the aircraft’s eligibility for a specific PBN
specification if the specific term is not used.
(g) RNAV 5
(1) If a statement of compliance with any of the following specifications or standards is
found in the acceptable documentation as listed above, the aircraft is eligible for
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