ETSI TS 102 576 specifies operational requirements and the methodology for showing conformance to the operational requirements for a Mobile Communication Onboard Aircraft system, which allows communication in the GSM and LTE (FDD) 1 800 MHz frequency band and the UMTS 2 100 MHz frequency band to ensure, that mobile terminals will not connect to ground based mobile networks.

The present document further specifies measurement methodologies allowing the definition of the key RF parameters of the aircraft, which are:

• the aircraft attenuation as observed at the windows;
• the aircraft attenuation in combination of the antenna system as observed at the antenna system feeding point;
• the effective cabin coupling loss within the aircraft cabin.

The present document also provides a way to translate the power level generated by the Mobile Communication Onboard Aircraft system at the antenna system output port to an E.I.R.P. defined outside the aircraft.