The pertinent ATC clearance when complementing the standard radiotelephony phraseology with traffic information.

In this incident the air traffic controller used subsidiary phraseology in addition to standard radiotelephony phraseology by providing traffic information of a landing aircraft to the taxiing aircraft. The pilot-in-command interpreted this as permission to taxi onto the runway.

Safety Investigation Authority, Finland recommend that Finavia Corporation make certain that air traffic controllers include the pertinent air traffic control clearance, as applicable, when they complement the standard radiotelephony phraseology with traffic information.

In this incident the air traffic controller used subsidiary phraseology in addition to standard radiotelephony phraseology by providing traffic information of a landing aircraft to the taxiing aircraft. The pilot-in-command interpreted this as permission to taxi onto the runway.