GAS TURBINE ENGINE COMBUSTOR

The gas turbine engine combustor (16) can have a gas generator case (40) having a first coefficient of thermal expansion, a liner (42) inside the gas generator case (40), the liner (42) delimiting a combustion chamber (44), a service tube (50) extending inside the gas generator case (40), outside the liner (42), the service tube (50) having a second coefficient of thermal expansion, the second coefficient of thermal expansion being higher than the first coefficient of thermal expansion.