AD 47-20-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | American Champion Aircraft Corp. | 11AC | Airworthiness Directives; Aeronca Model 7AC Airplanes |
| aircraft | American Champion Aircraft Corp. | 7AC | Airworthiness Directives; Aeronca Model 7AC Airplanes |
Unsafe Condition
The oleo strut assembly may separate in flight due to the use of a fiber piston.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace the fiber piston with aluminum pistons.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
at next periodic inspection but not later than August 1, 1947
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Aeronca Model 7AC Airplanes, serial numbers 226 to 3721; and 11AC, serial numbers 1 to 351.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Oleo Piston
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_47-20-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 47-20-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Aeronca Model 7AC Airplanes Subject: Oleo Piston Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: American Champion Aircraft Corp. Model: 11AC | 7AC Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 47-20-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 47-20-02 SUBJECT HEADING: Airworthiness Directives; Aeronca Model 7AC Airplanes ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 47-20-02 AERONCA: (Was Mandatory Note 2 of AD-761-2 and Mandatory Note 2 of AD-759-3.) Applies to 7AC Airplanes Having Serial Numbers 226 to 3721; and 11AC, Serial Numbers 1 to 351. Compliance required at next periodic inspection but not later than August 1, 1947. To prevent the oleo strut assembly from separating in flight, replace the fiber piston with aluminum pistons. (Supplementary to Aeronca Service Helps and Hints No. 12 dated February 11, 1947, covers this same subject.) FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_47-20-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 47-20-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Aeronca Model 7AC Airplanes Subject: Oleo Piston Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: American Champion Aircraft Corp. Model: 11AC | 7AC 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: 47-20-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 47-20-02 SUBJECT HEADING: Airworthiness Directives; Aeronca Model 7AC Airplanes ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 47-20-02 AERONCA: (Was Mandatory Note 2 of AD-761-2 and Mandatory Note 2 of AD-759-3.) Applies to 7AC Airplanes Having Serial Numbers 226 to 3721; and 11AC, Serial Numbers 1 to 351. Compliance required at next periodic inspection but not later than August 1, 1947. To prevent the oleo strut assembly from separating in flight, replace the fiber piston with aluminum pistons. (Supplementary to Aeronca Service Helps and Hints No. 12 dated February 11, 1947, covers this same subject.) 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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