Altimeter setting procedures

ENR 1.7 Altimeter setting procedures

1.7.1. Introduction

1.7.1.1 The altimeter setting procedures in use generally conform to those contained in ICAO Doc 8168 – OPS, Volume III and only differences are stated.

1.7.2. Basic setting procedure

1.7.2.1 QNH reports are available from all Air Traffic Service units. QNH values are given in whole hectoPascal rounded down in accordance with the standards in ICAO Annex 3.

1.7.2.2 Transition altitude is fixed at 13,000 FT for the entire Emirates FIR.

1.7.2.3 Transition level is fixed at FL 150 for the entire Emirates UIR.

1.7.3. Altimeter setting regions

1.7.3.1 Due to the relatively small pressure differentials experienced across the Emirates FIR there are no altimeter setting regions specified. When required:

Aircraft in contact with Emirates ACC shall be issued with an area QNH.
Aircraft in contact with other ATS units shall normally be given the QNH applicable to the location of the ATS unit.

1.7.4. Procedures applicable to operators

1.7.4.1 When complying with the semi - circular system of cruising levels, an aircraft shall be flown at levels corresponding to the magnetic track shown in the table of cruising levels applicable in the Emirates FIR.

Note: While the table of cruising levels apply to uncontrolled VFR flights (i.e. in class G airspace), ATC will normally assign IFR cruising altitudes to controlled VFR flights (i.e. in Class C and D airspace).

1.7.5. Table of cruising levels

TRACK
From 000˚ to 179˚						From 180˚ to 359˚
IFR Flights			VFR Flights			IFR Flights			VFR Flights
FL	Altitude		FL	Altitude		FL	Altitude		FL	Altitude
FL	Metres	Feet	FL	Metres	Feet	FL	Metres	Feet	FL	Metres	Feet
	900	3000		450	1500		600	2000		750	2500
	1500	5000		1050	3500		1200	4000		1350	4500
	2150	7000		1700	5500		1850	6000		2000	6500
	2750	9000		2300	7500		2450	8000		2600	8500
	3350	11000		2900	9500		3050	10000		3200	10500
	3950	13000		3500	11500		3650	12000		3800	12500
150			Class A airspace			160			Class A airspace
170						180
190						200
210						220
230						240
250						260
270						280
290			Class A airspace RVSM applied (See ENR 1.10.3)			300			Class A airspace RVSM applied (See ENR 1.10.3)
310						320
330						340
350						360
370						380
390						400
410						400
450			Class A airspace			430			Class A airspace
490						470
etc.						etc.