Learjet 30-series jets operating in the Pacific Rim can have RVSM mods performed by Jet Aviation Singapore. Under an agreement with the jet’s manufacturer, Bombardier, Jet Aviation will arrange for height-monitoring flights and install modifications to make the aircraft RVSM-compliant. The agreement applies to Learjet 31s, 31As, 35s, 35As, 36 and 36As. RVSM currently applies in Pacific airspace from FL 290 to FL 390 inclusive.