Method of repairing combustion chamber liners

A method of repairing a damaged annular transpiration cooled liner of a gas turbine engine combustion chamber comprising the steps of:

• removing an annular portion of the liner including a damaged region from between an upstream section and a downstream section of the liner;
• forming sheet metal into an annular replacement section having at least one axial seam extending between an upstream end of the replacement section and a downstream end opposite said upstream end, the replacement section being sized and shaped similarly to said removed annular portion of the liner;
• joining the upstream end of the formed annular replacement section to said upstream section of the liner;
• and
• joining the downstream end of the formed annular replacement section to said downstream section of the liner.