当座舱增压面板上的AUTO FAIL和ALTN都亮时,将增压方式选择器选择ALTN位则:
AAUTO FAIL灯灭, ALTN灯保持亮
BAUTO FAIL灯灭, ALTN灯保持灭
CAUTO FAIL灯亮, ALTN灯保持灭
DAUTO FAIL灯亮, ALTN灯保持亮
AAUTO FAIL灯灭, ALTN灯保持亮
BAUTO FAIL灯灭, ALTN灯保持灭
CAUTO FAIL灯亮, ALTN灯保持灭
DAUTO FAIL灯亮, ALTN灯保持亮