PPRuNe Forums - View Single Post - Chinese/Russian Aircraft with Meteric Alitmeters in Chinese RVSM airspace
Old 13th May 2015, 07:28
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hikoushi
 
Join Date: Jun 2006
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Yes sir thou art correct!! Too much "drinkee" went into that post. Tsingtao makes math go away. Aren't you glad the Chinese were smart enough to make those handy conversion charts for people like me?


Also for the OP, here is the Chinese rule regarding which altimeter to use, as presented in the IFALPA document on same:


Altitude/ Flight Level Clearances

To prevent undesirable ACAS TA/RA triggering in RVSM airspace and since most civil aircraft use FEET as the primary
altitude reference with a minimum selectable interval of 100 feet;

a) ATC will issue the Flight Level clearance in metres. Pilots shall use the China RVSM FLAS table to
determine the corresponding Flight Level in feet. The aircraft shall be flown using the flight level in FEET.

b) Pilots should be aware that due to the rounding differences, the metric readout of the onboard avionics will
not necessarily correspond to the cleared Flight Level in metres, however, the difference will never be more
than 30 metres.

c) Aircraft equipped with metric and feet altimeters such as the Il-96, Il-62, Tu-214 or Tu-154 shall use the
feet altimeter in RVSM airspace. If unable to use the feet altimeter, the operator shall contact the China
RVSM Program office and apply for special approval to operate into China RVSM as described in China AIP
section 9 (Contact information can be found in section 9.4.3).

Outside of the RVSM FL band, metre altimeters may be used.
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