A total of 45 CRJ700s already completed will receive the EICAS 5 update at Bombardier's cost. The work will last around two weeks per aircraft and entail the swapping out of some line replaceable units for software updates, says Les Porkhardt from Bombardier's CRJ700 product planning office.

Several early-build aircraft require wiring changes, including additional switch inputs to the aircraft's General Electric CF34-8C1 full authority digital engine controls. Other changes include altering aircraft ducting to reduce air velocity and cabin noise. Bombardier hopes the EICAS 5 update will help bring the aircraft's dispatch reliability in line with that of the earlier CRJ200.

Source: Flight International