AD 64-17-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Revo, Incorporated | Lake LA-4 | Airworthiness Directives; Consolidated Aeronautics Models Lake LA-4, Lake LA-4A and Lake LA-4P Aircraft |
| aircraft | Revo, Incorporated | Lake LA-4A | Airworthiness Directives; Consolidated Aeronautics Models Lake LA-4, Lake LA-4A and Lake LA-4P Aircraft |
| aircraft | Revo, Incorporated | Lake LA-4P | Airworthiness Directives; Consolidated Aeronautics Models Lake LA-4, Lake LA-4A and Lake LA-4P Aircraft |
Unsafe Condition
Complete breather blockage and subsequent loss of engine oil due to icing.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Rework the uppermost (-37) elbow on the oil breather separator container by locating a 3/8 inch x 3/32 inch whistle slot 3/4 inch from the top of the breather container in accordance with Consolidated Aeronautics, Inc. Engineering Order No. 2-657 dated March 2, 1964.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
prior to September 15, 1964
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Affected Aircraft
Revo, Incorporated Models Lake LA-4, Lake LA-4A, and Lake LA-4P Aircraft
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Engine Breather Tube
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_64-17-05.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 64-17-05 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Consolidated Aeronautics Models Lake LA-4, Lake LA-4A and Lake LA-4P Aircraft Subject: Engine Breather Tube Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 08/28/1964 Make: Revo, Incorporated Model: Lake LA-4 | Lake LA-4A | Lake LA-4P Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 64-17-05 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 64-17-05 SUBJECT HEADING: Airworthiness Directives; Consolidated Aeronautics Models Lake LA-4, Lake LA-4A and Lake LA-4P Aircraft ACTION: SUMMARY: DATES: Effective August 28, 1964. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 64-17-05 CONSOLIDATED AERONAUTICS: Amdt. 777 Part 507 Federal Register July 29, 1964. Applies to Models Lake LA-4, LA-4A and LA-4P Aircraft. Compliance required prior to September 15, 1964. To preclude the possibility of complete breather blockage and subsequent loss of engine oil due to icing, rework the uppermost (-37) elbow located on the oil breather separator container in accordance with Consolidated Aeronautics, Inc. Engineering Order No. 2-657, dated March 2, 1964. This rework consists of locating a 3/8 inch x 3/32 inch whistle slot 3/4 inch from top of breather container. (Consolidated Aeronautics, Inc. Service Letter No. 8, Revision No. 1 dated March 7, 1964, covers this same subject.) This directive effective August 28, 1964. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_64-17-05.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 64-17-05 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Consolidated Aeronautics Models Lake LA-4, Lake LA-4A and Lake LA-4P Aircraft Subject: Engine Breather Tube Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 08/28/1964 Make: Revo, Incorporated Model: Lake LA-4 | Lake LA-4A | Lake LA-4P 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: 64-17-05 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 64-17-05 SUBJECT HEADING: Airworthiness Directives; Consolidated Aeronautics Models Lake LA-4, Lake LA-4A and Lake LA-4P Aircraft ACTION: SUMMARY: DATES: Effective August 28, 1964. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 64-17-05 CONSOLIDATED AERONAUTICS: Amdt. 777 Part 507 Federal Register July 29, 1964. Applies to Models Lake LA-4, LA-4A and LA-4P Aircraft. Compliance required prior to September 15, 1964. To preclude the possibility of complete breather blockage and subsequent loss of engine oil due to icing, rework the uppermost (-37) elbow located on the oil breather separator container in accordance with Consolidated Aeronautics, Inc. Engineering Order No. 2-657, dated March 2, 1964. This rework consists of locating a 3/8 inch x 3/32 inch whistle slot 3/4 inch from top of breather container. (Consolidated Aeronautics, Inc. Service Letter No. 8, Revision No. 1 dated March 7, 1964, covers this same subject.) This directive effective August 28, 1964. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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