AD 52-08-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Sierra Hotel Aero, Inc. | Navion B | Airworthiness Directives; Navion All Model B Aircraft |
Unsafe Condition
Collapse of flexible ducting P/N 146-42207 in the air induction system causing engine malfunction.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace section P/N 146-42207 ducting between carburetor air filter assembly and carburetor air mix box with wire reinforced ducting or equivalent.
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Compliance Time
not later than June 15, 1952
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Affected Aircraft
Sierra Hotel Aero, Inc. Navion B aircraft, all serial numbers
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Carburetor Ducting
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_52-08-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 52-08-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Navion All Model B Aircraft Subject: Carburetor Ducting Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Sierra Hotel Aero, Inc. Model: Navion B Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 52-08-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 52-08-02 SUBJECT HEADING: Airworthiness Directives; Navion All Model B Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 52-08-02 NAVION: Applies to All Model B Aircraft and Cancels AD 51-19-03 Upon Compliance. Compliance required not later than June 15, 1952. Due to reports of engine malfunction caused by collapse of flexible ducts in the air induction system, it is necessary to replace the section P/N 146-42207 ducting between the carburetor air filter assembly and the carburetor air mix box with wire reinforced ducting, or its equivalent. (Ryan Field Service Bulletin No. 16, dated February 12, 1952, covers this same subject.) This supersedes AD 51-19-03. FOOTER:
Document Text
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AD Final Rules - DRS_52-08-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 52-08-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Navion All Model B Aircraft Subject: Carburetor Ducting Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Sierra Hotel Aero, Inc. Model: Navion B Product Type: Aircraft Product Subtype: Small 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: 52-08-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 52-08-02 SUBJECT HEADING: Airworthiness Directives; Navion All Model B Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 52-08-02 NAVION: Applies to All Model B Aircraft and Cancels AD 51-19-03 Upon Compliance. Compliance required not later than June 15, 1952. Due to reports of engine malfunction caused by collapse of flexible ducts in the air induction system, it is necessary to replace the section P/N 146-42207 ducting between the carburetor air filter assembly and the carburetor air mix box with wire reinforced ducting, or its equivalent. (Ryan Field Service Bulletin No. 16, dated February 12, 1952, covers this same subject.) This supersedes AD 51-19-03. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.
Related Airworthiness Directives
2008-05-14 Recurring
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51-07-01
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