INDIGO AIR LAW 1-513 INDIGO SYSTEMS(515-806) INDIGO PISTON(836-954) INDIGO JET (955-1001) FIRE EXTINGUISHER 1002 -1050 EMERGENCY EQUIPMENT AND OXYGEN (1051-1116) INDIGO INSTRUMENTS (1117-1427) PRESSURE FUEL AND TEMPERATURE GAUGE( 1428-1487) PAYLOAD AND CG(1488-1678) PERFORMANCE (1718-2089) INDIGO FLIGHT PLANNING (2108-2519) HUMAN PERFORMANCE ( 2520-3271) INDIGO METEOROLOGY(3272-4089) Indigo gen NAV 4090-4604 MISCELLANEOUS 4903-5258 INDIGO RADIO NAVIGATION INDIGO COMMUNICATION 5690-5917 INDIGO AERODYNAMIC 5259-5689