The story is now getting a run on Stuff:
https://www.stuff.co.nz/business/ind...eing-777300ers
Air New Zealand engineering and maintenance group general manager Brett Daley said ...“As the Auckland environment can be higher in humidity than desert storage locations, there has been some surface corrosion on four of the GE90 engines. These issues do not present a safety concern or impact the structure or integrity of the engine or aircraft." ... He said the aircraft were placed into storage in accordance with the maintenance procedures supplied via the engine and aircraft manufacturers. Air New Zealand’s local engineering and maintenance staff managed the aircraft on a regular basis throughout the storage period
i.e. "Nothing to see here, move along please"