Bombardier mitigates CSeries rework

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Bombardier is methodically managing travelled work to its final assembly line for its earliest CSeries CS100 aircraft, after watching competitors Boeing and Airbus struggle to normalise production as out-of-sequence work disrupted certification and delivery schedules.

FTV1, or Flight Test Vehicle 1, the first of five CS100 flight-test aircraft and the second airframe assembled after its static test demonstrator, will have its wiring and high-value avionics systems installed in final assembly, rather than at structural suppliers, explained Rob Dewar, vice-president and general manager of the CSeries programme.

"We've learnt over many programmes that if you say you're going to have 100% of every system supplied from day one, that's not realistic," he said.

Shenyang Aircraft Corporation builds the CS100's centre fuselage, and will deliver FTV1's section fitted with hydraulic tubes and fuel pipes prior to delivery. Its work scope will expand to include the installation of other systems, which will be migrated from Bombardier for regular production.

Dewar said that based on lead times for avionics development, it "doesn't make sense" to have every system delivered on the aircraft structure from "day one".

Dewar said the CSeries is designed with these late changes in mind, by placing the wiring harnesses between the floor panels and floor beams for the easiest possible access. The work will be migrated back to the structural suppliers as the final wiring harness configuration is established, Dewar said.