ENR 1.7 ALTIMETER SETTING PROCEDURES

1 Introduction

The altimeter setting procedures in use generally conform to those contained in ICAO Doc 8168, Vol Ⅲ, Section 2. In Incheon FIR, The transition altitude is 14 000 ft and the transition level is FL 140.

The Transition altitude and The Transition level are shown on the Instrument Approach Chart, Standard Departure Chart, Standard Arrival Chart and En-route Chart.

QNH values are given in hectopascals. Military ATC facilities may provide it in inches (hg). Unless otherwise requested by the pilot altimeter settings are given in hectopascals.

2 Altimeter setting procedure

2.1

Vertical positioning of aircraft when at or below the transition altitude is expressed in terms of 'altitude' where as such positioning above the transition level is expressed in term of 'flight levels'.

2.2 Aircraft altimeters shall be set to one of the following :

2.2.1 When operating Below 14 000 ft AMSL

Use current reported altimeter setting of a station along the route and within 100 NM of the aircraft.
And there is no station within the area prescribed in paragraph 2.2.1.(1) of this section, the current reported altimeter setting of an appropriate available station must be used; or
In the case of an aircraft not equipped with a radio, the elevation of the departure airport or an appropriate altimeter setting is available before departure; or

2.2.2 At or above 14 000 ft AMSL

The standard altimeter setting (1013.2 hPa or 29.92" inches (Hg)).

2.3 Terminal

2.3.1 The altimeter setting is provided to all departure aircraft unless specifically requested by the pilot. For arriving aircraft altimeter setting is provided on or after the contact.

2.3.2 The tower may omit the altimeter if the aircraft is sequenced or Radar vectored to the airport by the approach control that has jurisdiction.

2.4 En-route

2.4.1 For arriving aircraft, altimeter settings are provided approximately 50 miles from the destination, if an approach control facility does not serve the airport.

2.4.2 When issuing clearance to descend below the lowest usable flight level, advise the pilot of the altimeter setting of the weather reporting station nearest the point the aircraft will descend below that flight level.

2.5 The lowest Usable Flight Level

The lowest usable flight levels to clear aircraft are shown in the following table.

Atmosphere pressure hectopascal (Inch Hg)	Lowest usable FL
1013.2(29.92) or higher	FL 140
1012.9(29.91) - 996.3(29.42)	FL 145
995.9(29.41) - 979.3(28.92)	FL 150
979.0(28.91) - 962.4(28.42)	FL 155
962.1(28.41) - 945.5(27.92)	FL 160

3 Description of altimeter setting region

The altimeter setting region is the Incheon FIR. This area is shown as follows in the ENR 6 (En-route Chart)

4 Procedures applicable to operators (including pilots)

4.1 Flight Planing

The levels at which a flight is to be conducted shall be specified in a flight plan

in terms of flight levels if the flight is to be conducted at or above the transition level, and
in terms of altitudes if the flight is to be conducted at or below the transition altitude.

5 Cruising level Tables

5.1 The cruising levels to be observed in the Incheon FIR are as follows:

TRACK
From 000° to 179°				From 180° to 359°
IFR Flight		VFR Flight		IFR Flight		VFR Flight
FL	Altitute(Feet)	FL	Altitude (Feet)	FL	Altitude (Feet)	FL	Altitude (Feet)
010 030 050 070 090 110 130 150 170 190 210 230 250 270 290 330 370 410 450 490 ㆍ ㆍ ㆍ	1 000 3 000 5 000 7 000 9 000 11 000 13 000 15 000 17 000 19 000 21 000 23 000 25 000 27 000 29 000 33 000 37 000 41 000 45 000 49 000 ㆍ ㆍ ㆍ	- 035 055 075 095 115 135 155 175 195 215 235 255 275 300 340 380 420 460 500 ㆍ ㆍ ㆍ	- 3 500 5 500 7 500 9 500 11 500 13 500 15 500 17 500 19 500 21 500 23 500 25 500 27 500 30 000 34 000 38 000 42 000 46 000 50 000 ㆍ ㆍ ㆍ	020 040 060 080 100 120 140 160 180 200 220 240 260 280 310 350 390 430 470 510 ㆍ ㆍ ㆍ	2 000 4 000 6 000 8 000 10 000 12 000 14 000 16 000 18 000 20 000 22 000 24 000 26 000 28 000 31 000 35 000 39 000 43 000 47 000 51 000 ㆍ ㆍ ㆍ	- 045 065 085 105 125 145 165 185 205 225 245 265 285 320 360 400 440 480 520 ㆍ ㆍ ㆍ	- 4 500 6 500 8 500 10 500 12 500 14 500 16 500 18 500 20 500 22 500 24 500 26 500 28 500 32 000 36 000 40 000 44 000 48 000 52 000 ㆍ ㆍ ㆍ

5.2 The cruising levels in areas where RVSM is applied between FL 290 and FL 410 are as follows (refer to ENR 1.9 for the RVSM airspace in the Incheon FIR).:

TRACK
From 000° to 179°				From 180° to 359°
IFR Flight		VFR Flight		IFR Flight		VFR Flight
FL	Altitute(Feet)	FL	Altitude (Feet)	FL	Altitude (Feet)	FL	Altitude (Feet)
290 310 330 350 370 390 410	29 000 31 000 33 000 35 000 37 000 39 000 41 000			300 320 340 360 380 400	30 000 32 000 34 000 36 000 38 000 40 000