AD 83-23-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | BAE Systems (Operations) Limited | HS 748 Series 2A | Airworthiness Directives; BRITISH AEROSPACE Model HS 748 Series 2A and 2B Airplanes |
| aircraft | BAE Systems (Operations) Limited | HS 748 Series 2B | Airworthiness Directives; BRITISH AEROSPACE Model HS 748 Series 2A and 2B Airplanes |
Unsafe Condition
Structural failure of the engine subframe
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect engine subframe struts and perform appropriate actions per British Aerospace HS 748 Service Bulletin 54/25, Revision 4. Repeat inspections every seven years from the last inspection.
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Compliance Time
Prior to 7 years from date of manufacture, or within the next 12 months after the effective date of this AD, whichever occurs later
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Affected Aircraft
BAE Systems (Operations) Limited Model HS 748 Series 2A and 2B airplanes certificated in all categories
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Federal Register Abstract
Engine Subframe Struts
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_83-23-06.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 83-23-06 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; BRITISH AEROSPACE Model HS 748 Series 2A and 2B Airplanes Subject: Engine Subframe Struts Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 12/15/1983 Make: BAE Systems (Operations) Limited Model: HS 748 Series 2A | HS 748 Series 2B Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 83-23-06 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-4767 AD NUMBER: 83-23-06 SUBJECT HEADING: Airworthiness Directives; BRITISH AEROSPACE Model HS 748 Series 2A and 2B Airplanes ACTION: SUMMARY: DATES: Effective December 15, 1983. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 83-23-06 BRITISH AEROSPACE AIRCRAFT GROUP: Amendment 39-4767. Applies to Model HS 748 series 2A and 2B airplanes certificated in all categories. To prevent structural failure of the engine subframe, accomplish the following, unless already accomplished: A. Prior to 7 years from date of manufacture, or within the next 12 months after the effective date of this AD, whichever occurs later, inspect engine subframe struts and perform the appropriate actions in accordance with paragraph 2, Accomplishment Instructions, of British Aerospace Aircraft Group HS 748 Service Bulletin 54/25, Revision 4, dated May 1979. B. Repeat the inspections of the subframe struts at seven year intervals from the last inspection. C. Alternate means of compliance which provide an equivalent level of safety may be used when approved by the Manager, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region. D. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base for the accomplishment of inspections and/or modifications required by this AD. This amendment becomes effective December 15, 1983. FOOTER:
Document Text
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AD Final Rules - DRS_83-23-06.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 83-23-06 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; BRITISH AEROSPACE Model HS 748 Series 2A and 2B Airplanes Subject: Engine Subframe Struts Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 12/15/1983 Make: BAE Systems (Operations) Limited Model: HS 748 Series 2A | HS 748 Series 2B Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 83-23-06 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-4767 AD NUMBER: 83-23-06 SUBJECT HEADING: Airworthiness Directives; BRITISH AEROSPACE Model HS 748 Series 2A and 2B Airplanes ACTION: SUMMARY: DATES: Effective December 15, 1983. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 83-23-06 BRITISH AEROSPACE AIRCRAFT GROUP: Amendment 39-4767. Applies to Model HS 748 series 2A and 2B airplanes certificated in all categories. To prevent structural failure of the engine subframe, accomplish the following, unless already accomplished: A. Prior to 7 years from date of manufacture, or within the next 12 months after the effective date of this AD, whichever occurs later, inspect engine subframe struts and perform the appropriate actions in accordance with paragraph 2, Accomplishment Instructions, of British Aerospace Aircraft Group HS 748 Service Bulletin 54/25, Revision 4, dated May 1979. B. Repeat the inspections of the subframe struts at seven year intervals from the last inspection. C. Alternate means of compliance which provide an equivalent level of safety may be used when approved by the Manager, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region. D. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base for the accomplishment of inspections and/or modifications required by this AD. This amendment becomes effective December 15, 1983. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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