AD 79-23-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Scotts-Bell 47 Inc | 47G | Airworthiness Directives; Bell 47G Series Helicopters |
| aircraft | Scotts-Bell 47 Inc | 47G-2 | Airworthiness Directives; Bell 47G Series Helicopters |
| aircraft | Scotts-Bell 47 Inc | 47G-2A | Airworthiness Directives; Bell 47G Series Helicopters |
| aircraft | Scotts-Bell 47 Inc | 47G-2A-1 | Airworthiness Directives; Bell 47G Series Helicopters |
| aircraft | Scotts-Bell 47 Inc | 47G-3 | Airworthiness Directives; Bell 47G Series Helicopters |
| aircraft | Scotts-Bell 47 Inc | 47G-3B | Airworthiness Directives; Bell 47G Series Helicopters |
| aircraft | Scotts-Bell 47 Inc | 47G-3B-1 | Airworthiness Directives; Bell 47G Series Helicopters |
| aircraft | Scotts-Bell 47 Inc | 47G-3B-2 | Airworthiness Directives; Bell 47G Series Helicopters |
| aircraft | Scotts-Bell 47 Inc | 47G-3B-2A | Airworthiness Directives; Bell 47G Series Helicopters |
| aircraft | Scotts-Bell 47 Inc | 47G-4 | Airworthiness Directives; Bell 47G Series Helicopters |
| aircraft | Scotts-Bell 47 Inc | 47G-4A | Airworthiness Directives; Bell 47G Series Helicopters |
| aircraft | Scotts-Bell 47 Inc | 47G-5 | Airworthiness Directives; Bell 47G Series Helicopters |
| aircraft | Scotts-Bell 47 Inc | 47G-5A | Airworthiness Directives; Bell 47G Series Helicopters |
Unsafe Condition
Non-magnetic stainless steel rod ends (NMB Inc. P/N AH FTL5 or Soloy P/N 100-2205-2B) may fail due to fatigue cracking, posing a risk of engine separation.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect turbine engine mount rod ends within 25 hours time-in-service after the effective date. Replace non-magnetic rod ends with Heim P/N HFL-5M or Soloy P/N 100-2205-1B within 25 hours time-in-service. Return suspect rod ends to Soloy Conversions within 30 days after removal.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within 25 hours time-in-service after the effective date of this AD
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Bell 47G series helicopters converted to turbine power via Soloy Conversions, Ltd. STC SH657NW
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Soloy Conversion per STC SH657NW
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_79-23-07.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 79-23-07 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Bell 47G Series Helicopters Subject: Soloy Conversion per STC SH657NW Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 11/26/1979 Make: Scotts-Bell 47 Inc Model: 47G | 47G-2 | 47G-2A | 47G-2A-1 | 47G-3 | 47G-3B | 47G-3B-1 | 47G-3B-2 | 47G-3B-2A | 47G-4 | 47G-4A ...Show more Product Type: Aircraft Product Subtype: Rotorcraft Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 79-23-07 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3613 AD NUMBER: 79-23-07 SUBJECT HEADING: Airworthiness Directives; Bell 47G Series Helicopters ACTION: SUMMARY: DATES: Effective November 26, 1979. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 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. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_79-23-07.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 79-23-07 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Bell 47G Series Helicopters Subject: Soloy Conversion per STC SH657NW Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 11/26/1979 Make: Scotts-Bell 47 Inc Model: 47G | 47G-2 | 47G-2A | 47G-2A-1 | 47G-3 | 47G-3B | 47G-3B-1 | 47G-3B-2 | 47G-3B-2A | 47G-4 | 47G-4A ...Show more Product Type: Aircraft Product Subtype: Rotorcraft Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 79-23-07 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3613 AD NUMBER: 79-23-07 SUBJECT HEADING: Airworthiness Directives; Bell 47G Series Helicopters ACTION: SUMMARY: DATES: Effective November 26, 1979. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 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. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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