Specifications include, but are not limited to: Bidders must have FAA approval to overhaul and repair Pratt & Whitney PT6- 41, PT6T-3DF, and PT6C-67C turbine engines, gearboxes, and accessories. Bidder must have "in-house" capabilities to perform these overhaul and repairs or provide sufficient proof that they will have these capabilities at the time of award. During repair or overhaul, the City shall be given the option of using "limited life" parts that are serviceable, but will not make the next overhaul period, or replacing and a percentage discount extended for remaining service life of these parts, provided there are at least 500 hours and appropriate cycle life remaining. Bidders must have a pool of engines or modules and accessories available to rent. The engine or module and accessories offered for rental can be new or used. The engine or module and accessories offered for rental must have a minimum of 500 hours time remaining before overhaul is due (500 Hours TBO).