Calculate the TOM = 19339 kg .

Subtract :

Fe fuel used 2100 litres x 0.79=1659 kg.

Oil used 4.5 litres = 0.96= 4.32 kg

Freight dropped 410 kg

Therefore Landing mass = 17265.68 kg

Calculate the TO moment = 392350 kgcm

Calculate the moment change for fuel, oil and freight:

Fuel 1659 x -8 = +13272 kgcm

Oil 4.32 x +40 = - 172.8 kgcm

Freight 410 x -40 = + 16400 kgcm

New total moment = 421849.2 kgcm

 

Landing CG = Moment

                            Mass

 

                  = 421849.2  = +24.43 cm (aft)

                     17265.68