| Last Squawk | 1000
Canada: Instrument Flight Rules (IFR) flight below 18,000' when no other code has been assigned
ICAO: Non-discrete mode A code reserved use in Mode S radar/ADS-B environment where the aircraft identification will be used to correlate the flight plan instead of the mode A code
US: Used exclusively by ADS-B aircraft to inhibit Mode 3A transmit
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)
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: IFR GAT flights operating in designated Mode S Airspace
Germany: IFR / Mode S Transponder Code |
SBO