Airbus A320neo hit by hydraulic system problems

Airbus is facing a new batch of technical problems with some of its new A320neo medium-haul jets on top of previously reported engine glitches that caused delivery delays, industry sources said Monday. The problems are related to the hydraulic systems and particularly an increased noise when taxiing, they said, adding that some jets are also displaying excess hydraulic temperatures, which can be a nuisance in hot climates. Airbus reiterated that any glitches would be resolved by July. Regular flyers are familiar with the distinctive "dog bark" sound heard below the cabin in some Airbus jets before take-off. The sound is produced by a pump designed to maintain equal pressure in separate hydraulic systems, even when one of the engines supporting them is shut down. <br/>