Work that Spirit does for bombardier Looks like all of bbd work is done at Belfast.
https://www.spiritaero.com/programs/commercial/commercial-programs/
Bombardier Challenger 350 business jet
The Belfast site manufactures the centre fuselage. The Casablanca site assembles emergency doors.
Bombardier Challenger 650 business jet
The Belfast site manufactures the centre fuselage and engine nacelles.
Bombardier Global 5500 and 6500 business jets
The Belfast site manufactures the forward fuselage, engine nacelles, horizontal stabiliser and other components. The Casablanca site assembles the floors.
Bombardier Global 7500 business jet
The Belfast site manufactures the composite horizontal stabiliser which includes advanced composite skins.