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Old 4th Jul 2012, 15:11
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aterpster
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In the US., certification for RNAV 1 does indeed permit operations in RNAV 2 airspace. (AC 90-100A) This is supposedly harmonized with ICAO.

RNAV 1 = accuracy of +/- 1.0 n.m. 95% of the time.

RNAV 2 = accuracy of +/- 2.0 n.m. 95 % of the time.
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