AD 80-02-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Lycoming Engines | TO-360-C1A6D | AVCO LYCOMING Model TO-360-C1A6D Series Engines |
Unsafe Condition
Failure of turbocharger oil drain flange P/N LW-14391 leading to possible loss of engine oil.
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Required Actions
Replace the turbocharger oil drain flange with P/N LW-16036 in accordance with AVCO Lycoming Service Bulletin No. 426 or FAA-approved equivalent. Equivalent methods of compliance must be approved by the Chief, Engineering and Manufacturing Branch, FAA Eastern Region.
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Compliance Time
within the next 50 hours in service after the effective date of this AD, unless already accomplished
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Affected Aircraft
AVCO Lycoming Model TO-360-C1A6D series engines serial numbers L-101-69A through L-264-69A except L-200-69A, L-246-69A and L-254-69A and all engines overhauled by Lycoming prior to May 4, 1977.
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Federal Register Abstract
Turbocharger Oil Drain Flange
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_80-02-13.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 80-02-13 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: AVCO LYCOMING Model TO-360-C1A6D Series Engines Subject: Turbocharger Oil Drain Flange Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 01/22/1980 Make: Lycoming Engines Model: TO-360-C1A6D Product Type: Engine Product Subtype: Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 80-02-13 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3671 AD NUMBER: 80-02-13 SUBJECT HEADING: AVCO LYCOMING Model TO-360-C1A6D Series Engines ACTION: SUMMARY: DATES: Effective January 22, 1980. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 80-02-13 AVCO LYCOMING: Amendment 39-3671. Applies to TO-360-C1A6D series engines serial numbers L-101-69A through L-264-69A except L-200-69A, L-246-69A and L-254-69A and all TO-360-C1A6D series engines overhauled (also known as remanufactured) by Lycoming prior to May 4, 1977. Compliance required within the next 50 hours in service after the effective date of this AD, unless already accomplished. To prevent possible loss of engine oil due to the failure of turbocharger oil drain flange P/N LW-14391, replace the turbocharger oil drain flange with oil drain flange P/N LW-16036 in accordance with AVCO Lycoming Service Bulletin No. 426 or FAA-approved equivalent. Equivalent methods of compliance must be approved by the Chief, Engineering and Manufacturing Branch, Federal Aviation Administration, Eastern Region. Upon submission of substantiating data by an owner or operator through an FAA Maintenance Inspector, the Chief, Engineering and Manufacturing Branch, FAA Eastern Region may adjust the compliance time specified in this AD. This amendment is effective January 22, 1980. FOOTER:
Document Text
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AD Final Rules - DRS_80-02-13.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 80-02-13 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: AVCO LYCOMING Model TO-360-C1A6D Series Engines Subject: Turbocharger Oil Drain Flange Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 01/22/1980 Make: Lycoming Engines Model: TO-360-C1A6D Product Type: Engine Product Subtype: Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 80-02-13 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3671 AD NUMBER: 80-02-13 SUBJECT HEADING: AVCO LYCOMING Model TO-360-C1A6D Series Engines ACTION: SUMMARY: DATES: Effective January 22, 1980. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 80-02-13 AVCO LYCOMING: Amendment 39-3671. Applies to TO-360-C1A6D series engines serial numbers L-101-69A through L-264-69A except L-200-69A, L-246-69A and L-254-69A and all TO-360-C1A6D series engines overhauled (also known as remanufactured) by Lycoming prior to May 4, 1977. Compliance required within the next 50 hours in service after the effective date of this AD, unless already accomplished. To prevent possible loss of engine oil due to the failure of turbocharger oil drain flange P/N LW-14391, replace the turbocharger oil drain flange with oil drain flange P/N LW-16036 in accordance with AVCO Lycoming Service Bulletin No. 426 or FAA-approved equivalent. Equivalent methods of compliance must be approved by the Chief, Engineering and Manufacturing Branch, Federal Aviation Administration, Eastern Region. Upon submission of substantiating data by an owner or operator through an FAA Maintenance Inspector, the Chief, Engineering and Manufacturing Branch, FAA Eastern Region may adjust the compliance time specified in this AD. This amendment is effective January 22, 1980. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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