AD 46-37-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Piper Aircraft Inc. | PA-12 | Airworthiness Directives; Piper Models J3C-65, J3C-65S, and All PA-12 |
| aircraft | Piper Aircraft Inc. | PA-12S | Airworthiness Directives; Piper Models J3C-65, J3C-65S, and All PA-12 |
| aircraft | Piper Aircraft Inc. | J3C-65S | Airworthiness Directives; Piper Models J3C-65, J3C-65S, and All PA-12 |
| aircraft | Piper Aircraft Inc. | J3C-65 (Army L-4; L-4A; L-4B (Navy NE-1); L-4H; L-4J (Navy NE-2)) | Airworthiness Directives; Piper Models J3C-65, J3C-65S, and All PA-12 |
Unsafe Condition
Failure of the fuel strainer bowl due to the use of a thin gasket that may not provide adequate sealing, leading to potential leaks or structural failure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace the present thin fuel strainer bowl gasket with a 1/8-inch thick cork and neoprene gasket supplied by Piper. Tighten the bowl seat nut only finger tight. Examine the bowl for flaws or cracks and replace if any are found.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
November 1, 1946
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Piper Models J3C-65, J3C-65S (Serial Numbers 14027 and up) and all PA-12.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Fuel Strainer Gasket
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_46-37-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 46-37-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Piper Models J3C-65, J3C-65S, and All PA-12 Subject: Fuel Strainer Gasket Status: Current Citation: This information is not available. Citation Publish Date: 06/17/1950 Effective Date: Make: Piper Aircraft Inc. Model: PA-12 | PA-12S | J3C-65S | J3C-65 (Army L-4; L-4A; L-4B (Navy NE-1); L-4H; L-4J (Navy NE-2)) Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: AIR-700: Compliance & Airworthiness Division Office of Primary Responsibility: AIR-720: Operational Safety Branch CFR Part Reference: Part 39 Comments: Group of older ADs published in FR on this date, issue/publish date of original from 1946 unavailable. AIRWORTHINESS DIRECTIVES FINAL RULES: 46-37-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 46-37-01 SUBJECT HEADING: Airworthiness Directives; Piper Models J3C-65, J3C-65S, and All PA-12 ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 46-37-01 PIPER: (Was Mandatory Note 12 of AD-691-02 and Mandatory Note 1 of AD- 780-3.) Applies to J3C-65 and J3C-65S, Serial Numbers 14027 and Up and All PA-12. Compliance required by November 1, 1946. To prevent possible failure of the fuel strainer bowl, replace the present thin fuel strainer bowl gasket with a 1/8-inch thick cork and neoprene gasket supplied by Piper. The bowl seat nut should be tightened only finger tight. The bowl should be carefully examined for signs of flaws or cracks and should be replaced if any are found. (Piper Service Bulletin No. 89 dated July 11, 1946, covers this same subject.) FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_46-37-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 46-37-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Piper Models J3C-65, J3C-65S, and All PA-12 Subject: Fuel Strainer Gasket Status: Current Citation: This information is not available. Citation Publish Date: 06/17/1950 Effective Date: Make: Piper Aircraft Inc. Model: PA-12 | PA-12S | J3C-65S | J3C-65 (Army L-4; L-4A; L-4B (Navy NE-1); L-4H; L-4J (Navy NE-2)) Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: AIR-700: Compliance & Airworthiness Division Office of Primary Responsibility: AIR-720: Operational Safety Branch CFR Part Reference: Part 39 Comments: Group of older ADs published in FR on this date, issue/publish date of original from 1946 unavailable. AIRWORTHINESS DIRECTIVES FINAL RULES: 46-37-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 46-37-01 SUBJECT HEADING: Airworthiness Directives; Piper Models J3C-65, J3C-65S, and All PA-12 ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 46-37-01 PIPER: (Was Mandatory Note 12 of AD-691-02 and Mandatory Note 1 of AD- 780-3.) Applies to J3C-65 and J3C-65S, Serial Numbers 14027 and Up and All PA-12. Compliance required by November 1, 1946. To prevent possible failure of the fuel strainer bowl, replace the present thin fuel strainer bowl gasket with a 1/8-inch thick cork and neoprene gasket supplied by Piper. The bowl seat nut should be tightened only finger tight. The bowl should be carefully examined for signs of flaws or cracks and should be replaced if any are found. (Piper Service Bulletin No. 89 dated July 11, 1946, covers this same subject.) FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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