Canadian regional carrier Jazz Aviation’s airport services group has ratified a new five-year labor contract.  The contract, retroactive to Jan. 14, 2017, extends to Jan. 13, 2022, and includes agreements on wages, pensions and benefits, Jazz parent Chorus Aviation said.  Jazz’s 900-plus customer service and aircraft services workers  were represented at bargaining sessions by Unifor Local 2002, a branch of the union that advocates for aviation ground crews, ...