Thank you for choosing Aerospace-Aviation360 for Part Number RFS1005A by Beechcraft for model Beech B1900C, B1900D which is described as Rotating Disc - Heavy Duty . This is an ASAP Semiconductor owned and operated website. We are a leading supplier of aircraft Commuter Brake parts like RFS1005A. You have 24/7 x 365 access to our diverse product database with the fastest lead times in the industry.