Duncan Aviation of Lincoln, Neb., has received RVSM group certification for the Westwind 1124 and RVSM equipment certification for the Astra series. Basic equipment installation for the Westwind (including air-data computers and IS&S altimeters) costs $160,400, depending on aircraft configuration. A pneumatic standby altimeter is an additional $12,000 (installed). Basic prices on the equipment required for the Astra series range from $184,000 to $187,000 (installed).