| Last Squawk | 2000
Australia: Civil IFR flights in Class G airspace
Canada: Uncontrolled IFR at or above 18,000ft
ICAO countries: The code to be squawked when entering a secondary surveillance radar (SSR) area from a non-SSR area used as Uncontrolled IFR flight squawk code
US: Non-discrete code assignments in accordance with FAA Order JO 7110.65, 5-2 *Also for use in oceanic airspace, unless another code is assigned by ATC
US: External ARTCC subsets (Discrete codes of blocks only except for first primary block, which is used as the ARTCC's non-discrete code if all discrete codes are assigned)
UK: Aircraft from a non SSR environment, or on the aerodrome surface in accordance with Note 12
Germany: Militärische Flüge im Nachttiefflugsystem |
SBO