Hello HP 81
As far as our records show the two Eagle Britannia’s CF and CG had ex military 252 freight doors and VF and VM had the larger doors fitted. I think its correct to say that the smaller doors were 72”X88” and the larger ones were 76”X 122.75.
The first door mod took six months to complete and total hours were 67,000 man hours. In addition to the door the floor beams were reinforced. The basic weight of the aircraft was increased by approx. 300lbs. Both CF and CG had very low flying hours when purchased from Transcontinental SA. The first aircraft cost £150,000 that also included a maintenance check 4.The aircraft could carry as follows
5 pallets plus 37 passengers
4 pallets plus 61 passengers
3 pallets plus 7 passengers
2 pallets plus 103 passengers
1 pallet plus 121 passengers

All freight 8 pallets Pallet size 108”X 88”