400sf conversion:
seems that carriers who have 400 pax planes are keen to retain the low hull values by converting their own fleet types CX/SQ/OZ
for eg are interested to convert some pax hulls and combi's to SF
however a dedicated 400f operator will see that purchasing an aging airframe conversion with a reduced payload 10000 kgs and higher maint costs for a price of 50-60mio and range reduction 250 miles -300 miles makes little economic sense. second hand 400f's required send s.a.e and price