Bell 407 Helicopter; s/n 53375." Dated 08-27-1999 and FAA form 8110-3 dated 08-27-1999. This system has been previously installed in accordance with STC SA00733CH dated August 20, 1997. Installation and wiring has been done in accordance with AC 43.13-IB chapter I 1 on electrical systems, AC 43.13-2A chapters