APPENDIX C REPAIR PARTS AND SPECIAL TOOLS LIST

TM 55-4920-413-13&P APPENDIX C REPAIR PARTS AND SPECIAL TOOLS LIST Section I. INTRODUCTION 1. Scope This manual lists spares and repair parts required for per- formance of Aviation Unit Maintenance (AVUM) and Aviation Intermediate Maintenance (AVIM) of the Instrument Display System Line Test Set. It authorizes the requisitioning and is- sue of spares and repair parts as indicated by the source and maintenance codes. 2. General This Repair Parts and Special Tools List is divided into the following sections a. Section II. Repair Parts List. A list of spares and repair parts authorized for use in the performance of maintenance. Parts are listed in figure and item number sequence. Items are indented when required to indicate the relationship to the next higher assembly. b. Section III. Special Tools List. (Not Applicable.) c. Section IV. National Stock Number and Part Number ln- dex. A list, in descending National Item Identification Num- ber (NIIN) sequence, of all National Stock Numbers (NSN), or Management Control Numbers (MCN) appearing in the list- ings, followed by a list in alphanumeric sequence, of all part numbers appearing in the listings. National Stock Numbers or Management Control Numbers and part numbers are cross- -referenced to each illustration figure and item number ap- pearance. 3. Explanation of Columns. a. Illustration. This column is divided as follows: (1) Figure Number. Indicates the figure number of the il- lustration in which the item is shown. (2) Item Number. The number used to identify each item called out in the illustration. b. Source, Maintenance, and Recoverability Codes (SMR). (1) Source Code. Source codes are assigned to support items to indicate the manner of acquiring support items for maintenance, repair, or overhaul of end items. Source codes are entered in the first and second positions of the Uniform SMR Code format as follows: Code Definition PA --- Item procured and stocked for anticipated or known usage. AD --- Item to be assembled at depot maintenance level. NOTE Cannnibalization or salvage maybe used as a source of supply for any items source coded above except aircraft support items as restricted by AR 700-42. (2) Maintenance Code. Maintenance codes are assigned to indicate the levels of maintenance authorized to USE and RE- PAIR support items. The maintenance codes are entered in the third and fourth positions of the Uniform SMR Code format as follows: (a) The maintenance code entered in the third position will indicate the lowest maintenance level authorized to re- move, replace, and use the support item. The maintenance code entered in the third position will indicate the following level of maintenance: Code Application/Explanation 0 --- Support item is removed, replaced, used at the Avia- tion Unit Maintenance (AVUM) level. (b) The maintenance code entered in the fourth position indicates whether the item is to be repaired and identities the lowest maintenance level with the capability to perform com- plete repair (i.e., all authorized maintenance functions). This position will contain the following maintenance code: C-1