ACCESS PROVISIONS – INSPECTION/REPAIR

TM 1-1520-238-23 2-12 Change 4 2.1. ACCESS PROVISIONS – INSPECTION/REPAIR – continued NOTE ·Steps (9), (10), and (11), refer to aircraft equipped with EMI provisions. ·Damage orientations and categories contained in step (10), determine serviceability of the EMI conductive coating. The EMI conductive coating protection is divided into three (I,II, and III) catego- ries of importance. (9) Check for damage, cuts, tears, and punctures in EMI gasket. Repair damage (para 2.27). (10) Check for damage, cuts, scratches, cracking, or peeling in EMI conductive coating. Repair damage (para 2.34). (11) Check for damage, cracking, or peeling in EMI tape. Repair damage (para 2.28). NOTE ·Category I areas should be repaired prior to flight operations in EMI environments of 200 volts/meter or higher. ·Category I areas include enclosures shielding critical equipment and wire harnesses. Shielding effectiveness: 60-40 db. (a) EMI conductive coating Category I areas. Category I conductive coating areas are the most critical and should be in good condition (i.e. scratch free) with minimum defects. 1 Check mating surface of conductive coating to gasket or joining surface for contaminates and paint over spray. Conductive coating surface can be cleaned by carefully using a soft cloth dampened with isopropyl alcohol. Ensure conductive coating is not softened or damaged. 2 Scratched conductive coating around fasteners is allowable if gap is limited to one side of fastener and not wider than 0.25 INCH. NAME/ ACCESS NO. ACCESS TO PART NUMBER NSN CATEGORY Door R90 Laser, PNVS, MUX, HF Remote 7-311111223-46 I Door L90 IHADSS and PNVS Boxes and ICU 7-311111223-45 I Fairing R60 Forward Avionics Bay Nose 7-311111223-606 I Fairing L60 Forward Avionics Bay Nose 7-311111223-605 I PNVS Shroud Assembly 13080400–039 5340-01–309-1338 I Door R295 Aft Electronics Equipment 7-311113690-50 I END OF TASK