AD 52-28-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | American Champion Aircraft Corp. | 11AC | Airworthiness Directives; Aeronca Model 11AC and S11AC Aircraft |
| aircraft | American Champion Aircraft Corp. | S11AC | Airworthiness Directives; Aeronca Model 11AC and S11AC Aircraft |
Unsafe Condition
Accidents have occurred due to misuse of the fuel transfer system when pilots attempted to transfer fuel during takeoff or climb, leading to potential fuel transfer failures.
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Required Actions
Install a placard near the fuel transfer system shutoff valve stating: 'Transfer fuel in level flight or glide only and when main tank is is half full or less. Valve is to be closed except while transferring fuel.'
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
not later than January 31, 1953
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Affected Aircraft
American Champion Aircraft Corp. Model 11AC and S11AC aircraft equipped with the Auxiliary Fuel Tank Installation.
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Federal Register Abstract
Fuel Transfer Placard
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_52-28-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 52-28-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Aeronca Model 11AC and S11AC Aircraft Subject: Fuel Transfer Placard Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: American Champion Aircraft Corp. Model: 11AC | S11AC Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 52-28-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 52-28-01 SUBJECT HEADING: Airworthiness Directives; Aeronca Model 11AC and S11AC Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 52-28-01 AERONCA: Applies to All Model 11AC and S11AC Aircraft Equipped With the Auxiliary Fuel Tank Installation. Compliance required not later than January 31, 1953. Accidents have occurred in the above model aircraft due to misuse of the fuel transfer system. These accidents have been caused by pilots attempting to transfer fuel while taking off or in a climb attitude. To preclude the possibility of pilot error with regard to the foregoing, the following placard, or its equivalent, shall be displayed near the fuel transfer system shutoff valve and in view of the pilot: "Transfer fuel in level flight or glide only and when main tank is half full or less. Valve is to be closed except while transferring fuel." FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_52-28-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 52-28-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Aeronca Model 11AC and S11AC Aircraft Subject: Fuel Transfer Placard Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: American Champion Aircraft Corp. Model: 11AC | S11AC 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: 52-28-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 52-28-01 SUBJECT HEADING: Airworthiness Directives; Aeronca Model 11AC and S11AC Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 52-28-01 AERONCA: Applies to All Model 11AC and S11AC Aircraft Equipped With the Auxiliary Fuel Tank Installation. Compliance required not later than January 31, 1953. Accidents have occurred in the above model aircraft due to misuse of the fuel transfer system. These accidents have been caused by pilots attempting to transfer fuel while taking off or in a climb attitude. To preclude the possibility of pilot error with regard to the foregoing, the following placard, or its equivalent, shall be displayed near the fuel transfer system shutoff valve and in view of the pilot: "Transfer fuel in level flight or glide only and when main tank is half full or less. Valve is to be closed except while transferring fuel." 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.
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