Domanda 59, Mass and Balance - ATPL - Airline Transport Pilot license

May be done by using standard fuel density values as specified in EU - OPS 1.
May be done by using standard fuel density values as specified in the Operations Manual, if the actual fuel density is not known.
Must be done using fuel density values of 0.79 for JP 1 and 0.76 for JP 4 as specified in EU - OPS, IEM - OPS 1.605E.
Must be done by using actual measured fuel density values.