79-23-07: Soloy Conversion per STC SH657NW

79-23-07 BELL HELICOPTER TEXTRON: Amendment 39-3613. Applies to Bell 47G series helicopters certificated in all categories that have been converted to turbine power Soloy Conversions, Ltd., Supplemental Type Certificate SH657NW. A. Within the next 25 hours time-in-service, after the effective date of this AD, inspect the turbine engine mount rod ends with a magnet to determine if the NMB Inc. P/N AH FTL5, or Soloy P/N 100-2205-2B rod ends are installed. These suspect stainless steel rod ends are identified by the fact that they are non-magnetic. B. If the non-magnetic stainless steel rod ends are found to be installed, replace the rod ends with Heim P/N HFL-5M or Soloy P/N 100-2205-1B in accordance with Soloy Conversions, Ltd., Service Bulletin 03-660 dated July 16, 1979, within 25 hours time-in-service after the effective date of this AD. C. Return the suspect stainless steel rod ends to Soloy Conversions, Ltd., for disposal within 30 days after removal. D. Alternate replacements which provide an equivalent level of safety may be used when approved by the Chief, Engineering and Manufacturing Branch, FAA Northwest Region. The manufacturer's specifications and procedures identified and described in this directive are incorporated herein and made a part hereof pursuant to 5 U.S.C. 552(a)(1). All persons affected by this directive who have not already received these documents from the manufacturer, may obtain copies upon request to Soloy Conversions, Ltd., P.O. Box 60, Chehalis, Washington, 98532. These documents may also be examined at FAA Northwest Region, 9010 East Marginal Way South, Seattle, Washington 98108. This amendment is effective November 26, 1979 and was effective earlier, for all recipients of the airmail letter dated August 21, 1979, which contained this Amendment.