AD 64-04-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | American Champion Aircraft Corp. | 7GC | Airworthiness Directives; Champion Model 7GCB, 7GCBA, 7KC, and All Models 7GC, 7GCA and 7HC Series Aircraft |
| aircraft | American Champion Aircraft Corp. | 7GCA | Airworthiness Directives; Champion Model 7GCB, 7GCBA, 7KC, and All Models 7GC, 7GCA and 7HC Series Aircraft |
| aircraft | American Champion Aircraft Corp. | 7GCB | Airworthiness Directives; Champion Model 7GCB, 7GCBA, 7KC, and All Models 7GC, 7GCA and 7HC Series Aircraft |
| aircraft | American Champion Aircraft Corp. | 7GCBA | Airworthiness Directives; Champion Model 7GCB, 7GCBA, 7KC, and All Models 7GC, 7GCA and 7HC Series Aircraft |
| aircraft | American Champion Aircraft Corp. | 7HC | Airworthiness Directives; Champion Model 7GCB, 7GCBA, 7KC, and All Models 7GC, 7GCA and 7HC Series Aircraft |
| aircraft | American Champion Aircraft Corp. | 7KC | Airworthiness Directives; Champion Model 7GCB, 7GCBA, 7KC, and All Models 7GC, 7GCA and 7HC Series Aircraft |
Unsafe Condition
Engine power loss due to the carburetor alternate air door being sucked into the engine.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Lock the door in the closed position using a 0.040 x 1/2 x 4 1/2 5052-H34 aluminum strap with AN 515-8-6 screws and AN 365-832 nuts, or remove the door assembly and cover the opening with a 0.040 x 4 x 4 5052-H34 aluminum patch using eight AN 470AD3-4 rivets.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within 50 hours' time in service after the effective date of this AD unless already accomplished
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
American Champion Aircraft Corp. models 7GC, 7GCA, 7GCB, 7GCBA, 7HC, and 7KC with the 4-1099 Airscoop Box and elliptical frame air filter.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Air Door Hinge
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_64-04-03.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 64-04-03 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Champion Model 7GCB, 7GCBA, 7KC, and All Models 7GC, 7GCA and 7HC Series Aircraft Subject: Air Door Hinge Status: Current Citation: Federal Register: February 8, 1964 Citation Publish Date: 02/08/1964 Effective Date: 03/09/1964 Make: American Champion Aircraft Corp. Model: 7GC | 7GCA | 7GCB | 7GCBA | 7HC | 7KC 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: 64-04-03 CITATION: [Federal Register: February 8, 1964] PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 64-04-03 SUBJECT HEADING: Airworthiness Directives; Champion Model 7GCB, 7GCBA, 7KC, and All Models 7GC, 7GCA and 7HC Series Aircraft ACTION: SUMMARY: DATES: Effective March 9, 1964. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 64-04-03 CHAMPION: Amdt. 683 Part 507 Federal Register February 8, 1964. Applies to All Models 7GCB, 7GCBA, 7KC and All Models 7GC, 7GCA and 7HC Series Aircraft Using the 4-1099 Airscoop Box with Elliptical Fram Air Filter. Compliance required within 50 hours' time in service after the effective date of this AD unless already accomplished. As a result of several cases of engine power loss due to the carburetor alternate air door being sucked into the engine, make the spring loaded alternate air door inoperative by one of the following: (a) Locking the door in the closed position by installing a 0.040 x 1/2 x 4 1/2 5052- H34 aluminum strap or equivalent across the door and attach with two AN 515-8-6 screws and AN 365-832 nuts; or (b) Removing the entire door assembly and covering the opening with a 0.040 x 4 x 4 5052-H34 aluminum patch or equivalent. Attach the patch with eight AN 470AD3-4 rivets evenly spaced. (Champion Service Letter No. 59 covers the same subject.) This directive effective March 9, 1964. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_64-04-03.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 64-04-03 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Champion Model 7GCB, 7GCBA, 7KC, and All Models 7GC, 7GCA and 7HC Series Aircraft Subject: Air Door Hinge Status: Current Citation: Federal Register: February 8, 1964 Citation Publish Date: 02/08/1964 Effective Date: 03/09/1964 Make: American Champion Aircraft Corp. Model: 7GC | 7GCA | 7GCB | 7GCBA | 7HC | 7KC 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: 64-04-03 CITATION: [Federal Register: February 8, 1964] PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 64-04-03 SUBJECT HEADING: Airworthiness Directives; Champion Model 7GCB, 7GCBA, 7KC, and All Models 7GC, 7GCA and 7HC Series Aircraft ACTION: SUMMARY: DATES: Effective March 9, 1964. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 64-04-03 CHAMPION: Amdt. 683 Part 507 Federal Register February 8, 1964. Applies to All Models 7GCB, 7GCBA, 7KC and All Models 7GC, 7GCA and 7HC Series Aircraft Using the 4-1099 Airscoop Box with Elliptical Fram Air Filter. Compliance required within 50 hours' time in service after the effective date of this AD unless already accomplished. As a result of several cases of engine power loss due to the carburetor alternate air door being sucked into the engine, make the spring loaded alternate air door inoperative by one of the following: (a) Locking the door in the closed position by installing a 0.040 x 1/2 x 4 1/2 5052- H34 aluminum strap or equivalent across the door and attach with two AN 515-8-6 screws and AN 365-832 nuts; or (b) Removing the entire door assembly and covering the opening with a 0.040 x 4 x 4 5052-H34 aluminum patch or equivalent. Attach the patch with eight AN 470AD3-4 rivets evenly spaced. (Champion Service Letter No. 59 covers the same subject.) This directive effective March 9, 1964. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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