encing BELL HELICOPTER ELECTRICAL STANDARD PRACTICES MANUAL BHT-ELEC-SPM dated 15, NOV, 1996, and BELL HELICOPTER TEXTRON STANDARD PRACTICES MANUAL, BHT-ALLSPM dated 11, OCT, 1996. end BELL HELICOPTER TEXTRON MODEL 407 MAINTENANCE MANUAL 407-MM-1 Rev. 8-01 dated Sept 1998; and in accordance with the manufa