ENR 1.7 ALTIMETER SETTING PROCEDURE

1 Introduction

The altimeter setting procedures in use generally conform to those contained in ICAO Doc 8168, Vol. I, Part 6 and are given in full below.

QNH reports and temperature information for use in determining adequate terrain clearance are provided in MET broadcasts and are available on request from the ATS units. QNH values are given in hectopascals.

2 Basic Altimeter Setting Procedures

2.1 General
2.1.1 The transition altitude for all aerodromes in Estonia is 5000 ft (1500 m) MSL.
2.1.2 The transition level is based on the local actual QNH value and is determined by the appropriate ATS unit.
2.1.3 Flight level zero is located at the atmospheric pressure level of 1013.25 hPa. Consecutive flight levels are separated by a pressure interval corresponding to 500 ft (152.4 m) in the standard atmosphere.
2.2 Take-Off and Climb
2.2.1 A QNH altimeter setting is made available to aircraft in start up clearance or before taxiing, except if the pilot of the aircraft has reported getting valid QNH from ATIS.
2.2.2 Vertical positioning of aircraft during climb is expressed in terms of altitudes until reaching the transition altitude (including).
2.3 Cross-Country Flight
2.3.1 When flying in the vicinity of aerodrome or at or below transition altitude (TA) in terminal control area, vertical position of the aircraft is given as altitude.When flying at or above transition level (TRL), vertical position of the aircraft is given as flight level (FL).
2.3.2 When flying below lowest usable flight level (LUF) in cross country flight, the vertical position of the aircraft is given as altitude.
When flying at or above lowest usable flight level (LUF), the position of the aircraft is given as flight levels (FL).

Note: Lowest usable flight level (LUF) is used in uncontrolled airspace, where it is determined by the flight crew taking into concern valid or forecast of QNH and
temperature.

2.3.3 In uncontrolled airspace aircraft shall be flown at altitudes or flight levels as applicable corresponding to the magnetic tracks shown in the table para. 5.
2.3.4 Flights planned to operate within airspace class C shall file in a flight plan that is conducted at flight levels appropriate to the track as specified in column “IFR flights” of the table para. 5 of cruising levels.
2.3.5 The correlation between flightlevel and track shall not apply, when otherwise indicated in ATC unit clearance.
2.4 Approach and Landing
2.4.1 Vertical position of aircraft during approach is expressed in terms of flight levels until reaching transition level (including).
2.4.2 A QNH altimeter setting for IFR flight is made available with clearance that takes the aircraft below transition level and with approach clearance.
2.4.3 The transition level (TRL), if it is not included or differs from ATIS broadcast, shall be transmitted to IFR flight with QNH. The transition level shall be acknowledged by read-back.
2.4.4 Altimeter QNH setting shall be transmitted to VFR flight with the clearance to join traffic circuit (at the latest).
2.4.5 QFE altimeter setting is available on demand only.
2.5 Missed Approach
2.5.1 The relevant portions of para. 2.2 and 2.4 shall be applied in the event of a missed approach.

3 Description of Altimeter Setting Region

There are no altimeter setting regions in Estonia.

4 Procedures Applicable to Operators (Including Pilots)

4.1 Flight Planning
The levels at which a flight is to be conducted shall be specified in a flight plan:
  1. in terms of flight levels if the flight shall be conducted at or above 6000 ft MSL, and
  2. in terms of altitudes if the flight shall be conducted at or below 6000 ft MSL.

5 Table of Cruising Levels

The cruising levels to be observed are as follows:

MAGNETIC TRACK
From 000° to 179°
From 180° to 359°
IFRVFRIFRVFR
Altitude
Altitude
Altitude
Altitude
FLmftFLmftFLmftFLmft
103001 000206002 000
309003 000351 0503 500401 2004 000451 3504 500
501 5005 000551 7005 500601 8506 000652 0006 500
702 1507 000752 3007 500802 4508 000852 6008 500
902 7509 000952 9009 5001003 05010 0001053 20010 500
1103 35011 0001153 50011 5001203 65012 0001253 80012 500
1303 95013 0001354 10013 5001404 25014 0001454 40014 500
1504 55015 0001554 70015 5001604 90016 0001655 05016 500
1705 20017 0001755 35017 5001805 50018 0001855 65018 500
1905 80019 0001955 95019 5002006 10020 0002056 25020 500
2106 40021 0002156 55021 5002206 70022 0002256 85022 500
2307 00023 0002357 15023 5002407 30024 0002457 45024 500
2507 60025 0002557 75025 5002607 90026 0002658 10026 500
2708 25027 0002758 40027 5002808 55028 0002858 70028 500
2908 85029 0003009 15030 000
3109 45031 0003209 75032 000
33010 05033 00034010 35034 000
35010 65035 00036010 95036 000
37011 30037 00038011 60038 000
39011 90039 00040012 20040 000
41012 50041 00043013 10043 000
45013 70045 00047014 35047 000
49014 95049 00051015 55051 000
etc
etc
etc
etc
etc
etc

Note: Guidance material relating to vertical separation is contained in the Manual on Implementation of a 300 m (1000 ft) Vertical Separation Minimum Between FL 290 and FL 410 Inclusive (Doc 9574).