1.1 Aircraft operating within the territory of Latvia must adhere to the requirements of Commission Regulation (EU) No 965/2012, as amended, and ICAO Regional Supplementary Procedures Document 7030/4-EUR.
1.2 RVSM airspace requirements
1.2.1 Only RVSM approved aircraft and non-RVSM approved State aircraft shall be permitted to operate within the EUR RVSM airspace.
1.2.2 RVSM approved aircraft are those aircraft for which the operator has obtained an RVSM approval, either from the State in which the operator is based, or from the State in which the aircraft is registered.
1.2.3 Except for State aircraft, RVSM approval is required for aircraft to operate in the RVSM airspace within the Riga FIR, as described in ENR 2.1
Not applicable.
3.1 When flying within the controlled airspace of the Riga FIR aircraft, shall be equipped with a serviceable SSR transponder with 4096 response codes in mode A/3 and mode C with automatic transmission of pressure altitude information switched on.
3.2 For more detailed information about the SSR transponder operation procedures, see ENR 1.6.2
4.1 An aircraft, other than State aircraft, operating within the controlled airspace of the Riga FIR between FL095 and FL660, except SIDs and STARs, shall be equipped with, as a minimum, RNAV equipment meeting RNAV 5 specification.
As required by Commission Implementing Regulation (EU) 1079/2012 the carriage and operations of 8.33 kHz channel spacing radio equipment is mandatory through the ICAO EUR Region as of 01 JAN 2018 for flights above and below FL195.
5.1 IFR flights
The carriage and operation of VHF 8.33 kHz channel spacing aircraft radio equipment suitable to maintain continuous two-way radiotelephony communication with the appropriate ATS units is mandatory for IFR flights within the Riga FIR.
Exemptions from the mandatory carriage of VHF 8.33 kHz aircraft radio equipment are described in ENR 1.8.
5.2 VFR flights
The carriage and operation of VHF 8.33 kHz channel spacing aircraft radio equipment suitable to maintain continuous two-way radiotelephony communication with the appropriate ATS units is mandatory for VFR flights within the Riga FIR in the airspace class C.
Exemptions from the mandatory carriage of VHF 8.33/25 kHz aircraft radio equipment are described in ENR 1.8.
VHF aircraft radio equipment suitable to maintain continuous two-way radiotelephony communication with the appropriate ATS units is recommended for VFR flights operating in airspace class G.
5.3 All operators and agents acting on their behalf shall ensure that the letter Y is inserted in item 10 of the flight plan for aircraft equipped with radios with 8.33 kHz channel spacing capability.
5.4 Operators and agents acting on their behalf shall ensure that when planning to fly in airspace requiring the carriage of radios with 8.33 kHz channel spacing capability, the appropriate indicator is included in the flight plan for aircraft which are not equipped but which have been granted exemption from the mandatory carriage of equipment.
6.1 All turbine-powered aeroplanes with a maximum certified take-off mass exceeding 5 700 kg or which are authorised to carry more than 19 passengers, and all other aircraft equipped on a voluntary basis with ACAS II, are to be fitted with, and operate, ACAS II software Version 7.1 within Latvian airspace, as follows:
• from 1 MAR 2012 all newly built aeroplanes,
• from 1 DEC 2015 aeroplanes built before 1 MAR 2012.
6.2 Operations with ACAS II temporarily out of service in accordance with the Minimum Equipment List (MEL) do not require permission to enter the Riga FIR.
Turbine-powered aeroplanes and reciprocating engine-powered aeroplanes, considering its maximum certified take-off mass, maximum operational passenger seating configuration and date of first issued Certificate of Airworthiness shall comply with the requirements of Commission Regulation (EU) No 965/2012, as amended.
8.1 All aeroplanes, helicopters, sailplanes and balloons, except ultra light aircraft, shall comply with the requirements of Commission Regulation (EU) No 965/2012, as amended.
8.2 An ELT of any type shall be capable of transmitting simultaneously on 121.5 MHz and 406 MHz. This requirement does not apply to an aircraft being flown to a place where such a transmitter is to be installed or repaired.
8.3 An operator shall ensure that all ELTs that are capable of transmitting on 406 MHz shall be coded in accordance with ICAO Annex 10 and registered with the Aeronautical Rescue Co-ordination Centre or another nominated agency.
9.1 An operator shall ensure that VHF communication equipment, ILS Localiser and VOR receivers installed on aircraft are operated in compliance with the FM immunity performance standards.
9.2 Acceptable equipment standards, consistent with ICAO Annex 10, are 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 RTCA documents DO-186, DO-195 and DO-196.
10.1 Aircraft flying within the Riga FIR, shall continuously monitor the VHF emergency frequency 121.5 MHz, except for such periods when the aircraft is carrying out communication on other VHF frequencies, or when airborne equipment limitations or cockpit duties do not permit simultaneous monitoring of two frequencies.
10.2 Aircraft shall continuously monitor the VHF emergency frequency 121.5 MHz in areas or over routes where the possibility of interception of aircraft or other hazardous situations exist, and a requirement to continuously monitor the frequency has been established by the appropriate authority.