Quick view Add to Cart Synthetic and Special Training Devices; Modification of Power Take-Off and Aerial Gunnery Trainers Document Part Number: T.O. No. 28-10-4 Number of pages: 4Part Number: T.O. No. 28-10-4Revision Date: 14-Aug-1944Description: For: Type E-5, Type E-9 MSRP: Was: Now: $15.00