TM 10-8400-203-23 SectIon Ill. SOURCE, MAINTENANCE AND RECOVERABILITY 1-8. SOURCE, MAINTENANCE AND RECOVERABILITY (SMR) CODES The 5 character SMR Code indenties the Source Code (SRC-CD), Maintenance Level and Recoverability Code (RE- COV-CD). a. Source Code (first two positions). The some Code is a two digit code assigned to an item to indicate the manner in which it is to be required for maintenance, repair or overhaul of an end item. CODE EXPLANATION PA PB PC PD PE PF PG KD KF KB MO MH ML MF MD AO AF AH Item procured and stocked for anticipated or known usage. Item procured end stocked for insurance purposes because  essentiality  dictates that a minimum quantity must be available in the supply system. Item procured  and stocked  which otherwise would be waled PA except that it is deteriorative in nature. Support item, excluding support equipment, procured for initial issue or outfittings and stocked only for subsequent or additional initial issues or outfittings. Not subject to automatic replinishment; i.e., installation kits, Modification Work Order (MWO) kits, and special purpose crew/operator tool kits. Support equipment procured and stocked for initial issue or outfitting to specified maintenance repair   activities. Support equipment which will not be stocked but which will be centrally procured on demand. Item procured and stocked to provide sustained support for the life of the equipment. It is applied to an item peculiar to the equipment which, because of probable discontinuance or shutdown of production facilities, would prove uneconomical to reproduce at a later time. An item of depot overhau/repair kit and not purchased separately. Depot kit defined as a kit that provides items required at the time of overhaul or repair. An item of a maintenance kit and not purchased separately. Maintenance kit defined as a kit that provides an item that can be placed at unit or intermediate categories of maintenance. Item included in both a depot overhaul repair kit and a maintenance tit. Item to be manufactured or fabricated at the unit category of maintenance. Item to be manufactured or fabricated at the Intermediate General Support (IGS) maintenance category. Item to be manufactured or fabricated at the specialized Repair Activity (SRA). Item to be manufactured or fabricated at the Intermediate Direct Support (IDS) maintenance category. Item to be manufactured or fabricated at depot maintenance category. Item to be assembled from stock numbered components at the unit category of maintenance. Item to be assembled at the IDS maintenance category. Item to be assembled at IGS maintenance category. Change 6  1-19