Method of repairing a damaged abradable coating

摘要

A method of repairing a damaged abradable coating (48) on a surface (46) of a shroud (44) in an assembled gas turbine engine (10) comprises inserting a boroscope (60) through an aperture (52) in the casing (50) of the compressor (26) of the gas turbine engine (10). The boroscope (60) is arranged to carry a conduit (62). The boroscope (60) and hence the conduit (62) are directed to the damaged abradable coating (48) on the surface (46) of the shroud (44). A liquid abradable glue (64) is supplied through the conduit (62) and the liquid abradable glue (64) is directed onto the surface (46) of the shroud (44) in the compressor (26) of the gas turbine engine (10) to repair the damaged abradable coating (48).