AMC1 ATS.TR.155(f) ATS surveillance services

• ED Decision 2020/008/R found in: ATM/ANS Provision of Services (2017/373) (Mar 2025)

AMC1 ATS.TR.155(f) ATS surveillance services ED Decision 2020/008/R TOLERANCE VALUE FOR PRESSURE-ALTITUDE-DERIVED LEVEL INFORMATION The tolerance value used to determine that the pressure-altitude-derived level information displayed to the air traffic controller is accurate should be ±60 m (±200 ft) in RVSM airspace. In other airspace, it should be ±90 m (±300 ft), except that the competent authority may specify a smaller criterion, but not less than ±60 m (±200 ft), if this is found to be more practical. AMC1 ATS.TR.155(f) ATS surveillance services ED Decision 2020/008/R TOLERANCE VALUE FOR PRESSURE-ALTITUDE-DERIVED LEVEL INFORMATION The tolerance value used to determine that the pressure-altitude-derived level information displayed to the air traffic controller is accurate should be ±60 m (±200 ft) in RVSM airspace. In other airspace, it should be ±90 m (±300 ft), except that the competent authority may specify a smaller criterion, but not less than ±60 m (±200 ft), if this is found to be more practical.