This paper is a critical discussion of various problems which one company encountered with accessories on several different makes of gas-fired turbines. These turbines are used as prime movers driving centrifugal natural gas compressors on a pipeline transmission system. The accessories covered are: ignition system, lube oil cooler, tach generator, lube oil pumps, auxiliary gearbox, thermocouples, lubricators, inlet air filter, instrument air system, cab pressurization fan, and starter.