ENR 1.8  Regional Supplementary Procedures

1.8.1   ADS-B PROVISIONS FOR STATE AIRCRAFT

State Aircraft that do not transmit ADS-B Out for technical or operational reasons will be accommodated by Portuguese ANSPs, in Lisboa FIR and Santa Maria FIR, through traditional surveillance methods such as Mode A/C/S. The flight plan shall include, in item 18, the indicators SUR/EUADSBX or SUR/EUEHSX or SUR/EUELSX or a combination thereof.