Unfortunately Numbers doesn’t recognise the formulas used to calculate the Days since Last Flight.

However you can use this formula (specific to Numbers for Mac/iOS) which will return the same result.

Simply copy and paste this formula into the top aircraft type row and copy/fill down to the other rows.

=TODAY()−IF(COUNTIF(Logbook::Table 1::B,C6)>0,INDEX(Logbook::Table 1::A,MATCH(C6,Logbook::Table 1::B,1)),"N/A")