AD 47-30-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | American Champion Aircraft Corp. | 11AC | Airworthiness Directives; Aeronca Model 7AC and 11AC. Airplanes |
| aircraft | American Champion Aircraft Corp. | 7AC | Airworthiness Directives; Aeronca Model 7AC and 11AC. Airplanes |
Unsafe Condition
Exhaust stack
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Exhaust Stack Inspection
Applicability Source Text
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AD Final Rules - DRS_47-30-05.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 47-30-05 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Aeronca Model 7AC and 11AC. Airplanes Subject: Exhaust Stack Inspection 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 Model: 11AC | 7AC Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 47-30-05 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 47-30-05 SUBJECT HEADING: Airworthiness Directives; Aeronca Model 7AC and 11AC. Airplanes ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 47-30-05 AERONCA: (Was Service Note 2 of AD-759-3 and Service Note 2 of AD-761- 3.) Applies to Models 7AC and 11AC. Inspection required not later than September 15, 1947, and each 50 hours thereafter on Model 7AC airplanes having serial numbers prior to No. 7AC-6797 and Model 11AC airplanes having serial numbers prior to No. 11AC-1697. Due to difficulties in the manufacture of the exhaust stacks for these airplanes, it is necessary to inspect the stack "Y" junction for evidence of failure or deterioration. This inspection should be accomplished as follows: A. Initial inspection (not later than September 30, 1947). The exhaust stacks on these airplanes should be removed from the airplane and checked visually in the vicinity of the "Y" junction for evidence of burning or flaking, tapped with a hammer for evidence of soft spots, and inspected to determine whether the stack is obstructed in any way. B. Periodic inspection (each 50 hours). The exhaust stacks should be reinspected visually in the vicinity of the "Y" junction by removing the cabin and carburetor heater muffs each 50 hours of engine operation. (This information is also contained in Aeronca Service Helps and Hints No. 25 dated May 13, 1947.) FOOTER:
Document Text
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AD Final Rules - DRS_47-30-05.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 47-30-05 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Aeronca Model 7AC and 11AC. Airplanes Subject: Exhaust Stack Inspection 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: 47-30-05 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 47-30-05 SUBJECT HEADING: Airworthiness Directives; Aeronca Model 7AC and 11AC. Airplanes ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 47-30-05 AERONCA: (Was Service Note 2 of AD-759-3 and Service Note 2 of AD-761- 3.) Applies to Models 7AC and 11AC. Inspection required not later than September 15, 1947, and each 50 hours thereafter on Model 7AC airplanes having serial numbers prior to No. 7AC-6797 and Model 11AC airplanes having serial numbers prior to No. 11AC-1697. Due to difficulties in the manufacture of the exhaust stacks for these airplanes, it is necessary to inspect the stack "Y" junction for evidence of failure or deterioration. This inspection should be accomplished as follows: A. Initial inspection (not later than September 30, 1947). The exhaust stacks on these airplanes should be removed from the airplane and checked visually in the vicinity of the "Y" junction for evidence of burning or flaking, tapped with a hammer for evidence of soft spots, and inspected to determine whether the stack is obstructed in any way. B. Periodic inspection (each 50 hours). The exhaust stacks should be reinspected visually in the vicinity of the "Y" junction by removing the cabin and carburetor heater muffs each 50 hours of engine operation. (This information is also contained in Aeronca Service Helps and Hints No. 25 dated May 13, 1947.) FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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