Quick view Add to Cart Operation, Service and Overhaul Instructions with Parts Catalog for Directional Gyro Indicators type, C-1, C-5, C-5C, Part No. 657069, 661560, 652191, 653290, 674174, 674090 Document Part Number: NAVAIR 05-20HD-1, T.O. No. 5F8-5-4-1 Number of pages: 200Part Number: NAVAIR 05-20HD-1, T.O. No. 5F8-5-4-1Revision Date: 20-Apr-1955Description: Manufactured by: Sperry MSRP: Was: Now: $60.00