TM 1-1520-238-23 Change 4 2-12.1 2.1. ACCESS PROVISIONS – INSPECTION/REPAIR – continued NAME/ ACCESS NO. (cont) ACCESS TO (cont) PART NUMBER (cont) NSN (cont) CATEGORY( cont) Door L295 Aft Stowage Bay 7-311113690-61 I Cover R40 Electronic Equipment 7-311111147-26 I Cover L40 Electronic Equipment 7-311111147-25 I Door B60 Cyclic Stick Controls 7-311111142-9 I Door B65R Flight Controls 7-311111211-9 I Door B65L Flight Controls 7-311111211-10 I NOTE Category II areas include enclosures shielding non-mission critical equipment and wire harnesses. Shielding effectiveness: 40-20 db. (b) EMI conductive coating Category II areas. Conductive coating in these areas are non-mission critical equipment and wire harnesses. 1 Conductive coating paint will protect these areas up to 20 db. If coating is discovered missing in these areas, flight operations are permissible in E.M.I. environments. Repair these areas at next phase maintenance interval. NAME/ ACCESS NO. ACCESS TO PART NUMBER NSN CATEGORY Door L325 Walkway Access – Deck Area 7-311150126-33 II Fairing R510 Vertical Stabilizer 7-311122620-48 II Fairing L510 Vertical Stabilizer 7-311122620-47 II Door B200 Ammunition Bay 7-311112420-17 1560-01-221-2946 II Fairing L540 Tail Rotor Transmission 7-311122621-75 II NOTE Category III areas include enclosures incorporating shading techniques. Shielding effectiveness: 20-10 db. (c) EMI conductive coating Category III areas. Conductive coating in these areas are least critical. 1 The conductive coating in these areas should protect up to 10 db. If the coating in these areas is damaged, it is permissible to operate the aircraft in E.M.I environments. The coating is to be repaired at the next phase maintenance interval.