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Flight level
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=== People's Republic of China and Mongolia=== The flight levels below apply to [[Mongolia]] and [[People's Republic of China]], not including Hong Kong. To distinguish flight levels in feet, flight levels are read without "flight level", e.g. "one two thousand six hundred metres" or for 12,600 m (Chinese only available in Chinese airspace). To distinguish altitude from flight level, "on standard" or "on QNH" would be added during initial clearance, such as "climb 4,800 metres on standard" or "descent 2,400 metres on QNH 1020". RVSM was implemented in China at 16:00 UTC on 21 November 2007, and in Mongolia at 00:01 UTC on 17 November 2011. Aircraft flying in feet according to the table below will have differences between the metric readout of the onboard avionics and ATC cleared flight level; however, the differences will never be more than thirty metres. {{Col-begin}} {{Col-break}} ;Track 180 to 359Β° *600 m (2,000 ft) *1,200 m (3,900 ft) *1,800 m (5,900 ft) *2,400 m (7,900 ft) *3,000 m (9,800 ft) *3,600 m (11,800 ft) *4,200 m (13,800 ft) *4,800 m (15,700 ft) *5,400 m (17,700 ft) *6,000 m (19,700 ft) *6,600 m (21,700 ft) *7,200 m (23,600 ft) *7,800 m (25,600 ft) *8,400 m (27,600 ft) *9,200 m (30,100 ft) *9,800 m (32,100 ft) *10,400 m (34,100 ft) *11,000 m (36,100 ft) *11,600 m (38,100 ft) *12,200 m (40,100 ft) *13,100 m (43,000 ft) *14,300 m (46,900 ft) and every 1,200 metres thereafter. {{Col-break}} ;Track 000 to 179Β° *900 m (3,000 ft) *1,500 m (4,900 ft) *2,100 m (6,900 ft) *2,700 m (8,900 ft) *3,300 m (10,800 ft) *3,900 m (12,800 ft) *4,500 m (14,800 ft) *5,100 m (16,700 ft) *5,700 m (18,700 ft) *6,300 m (20,700 ft) *6,900 m (22,600 ft) *7,500 m (24,600 ft) *8,100 m (26,600 ft) *8,900 m (29,100 ft) *9,500 m (31,100 ft) *10,100 m (33,100 ft) *10,700 m (35,100 ft) *11,300 m (37,100 ft) *11,900 m (39,100 ft) *12,500 m (41,100 ft) *13,700 m (44,900 ft) *14,900 m (48,900 ft) and every 1,200 metres thereafter. {{col-end}} <!--what is the recognised upper limit? -->
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