This is a lass--large aircraft start system--it contains a turbine engine
No other part numbers with same form, fit, and function found.
Classification: Gas turbine engine, except aircraft nesoi, of a power not exceeding 5,000 kw
NSN 5910-01-358-0161
NSN 5975-00-296-0468
NSN 5990-01-320-1412
NSN 6150-01-502-9532
NSN 6320-01-352-5653
NSN 5998-01-042-4360
NSN 5945-01-036-1962
NSN 6620-01-459-6401
NSN 6105-00-852-8197
NSN 2925-01-074-9102
NSN 5935-00-011-5031
NSN 4140-01-656-0158