AD 84-19-03 R1
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Lycoming Engines | LTIO-540-V2AD | AVCO LYCOMING Model TIO-540-V2AD and LTIO-540-V2AD Engines |
| engine | Lycoming Engines | TIO-540-V2AD | AVCO LYCOMING Model TIO-540-V2AD and LTIO-540-V2AD Engines |
Unsafe Condition
Cracks have occurred in the area of the intake valve seat of the cylinder head in Avco Lycoming model TIO-540-V2AD and LTIO-540-V2AD engines with P/N LW-18852 cylinder assemblies.
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Required Actions
Replace all P/N LW-18852 cylinder assemblies with P/N LW-19281 cylinder assemblies from kit P/N LW-19297-S within the next 50 hours of time-in-service after the effective date or prior to accumulating 550 hours time-in-service, whichever occurs later. The aircraft may be flown to a location for compliance under FAR 21.197 and 21.199. Equivalent compliance may be approved by the Manager, New York Aircraft Certification Office.
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Compliance Time
Within the next 50 hours of time-in-service after the effective date of this AD, or prior to accumulating 550 hours time-in-service, whichever occurs later
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Affected Aircraft
Avco Lycoming model TIO-540-V2AD engines Serial Numbers L-8620-61A and below and model LTIO-540-V2AD Serial Numbers L-2820-68A and below with P/N LW-18852 cylinder assemblies installed in Piper PA-31P-350 'Mojave' aircraft.
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Federal Register Abstract
Cylinder Assemblies
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_84-19-03_R.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 84-19-03 R1 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: AVCO LYCOMING Model TIO-540-V2AD and LTIO-540-V2AD Engines Subject: Cylinder Assemblies Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 09/20/1984 Make: Lycoming Engines Model: LTIO-540-V2AD | TIO-540-V2AD Product Type: Engine Product Subtype: Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 84-19-03 R1 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-4921 AD NUMBER: 84-19-03 R1 SUBJECT HEADING: AVCO LYCOMING Model TIO-540-V2AD and LTIO-540-V2AD Engines ACTION: SUMMARY: DATES: Effective September 20, 1984. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 84-19-03 R1 AVCO LYCOMING: Amendment 39-4907 as amended by Amendment 39-4921. Applies to Avco Lycoming model TIO-540-V2AD engines Serial Numbers L-8620-61A and below and model LTIO-540- V2AD Serial Numbers L-2820-68A and below, having P/N LW-18852 cylinder assemblies. These engines are installed in Piper PA-31P-350 "Mojave" aircraft. Compliance is required as indicated, unless already accomplished. Cracks have occurred in the area of the intake valve seat of the cylinder head in the above engine models. To prevent possible failure of the engine cylinder assembly, P/N LW-18852, accomplish the following: (a) Within the next 50 hours of time-in-service after the effective date of this AD, or prior to accumulating 550 hours time-in-service, whichever occurs later, replace all P/N LW-18852 cylinder assemblies with P/N LW-19281 cylinder assemblies which are included in kit P/N LW-19297-S. Cylinder part number identification is located on the cylinder head casting in the rocker box area. (b) In accordance with FAR 21.197 and 21.199, the aircraft may be flown to a location where the inspections or alterations required by this AD can be performed. (c) An equivalent means of compliance with the requirements of this AD may be approved by the Manager, New York Aircraft Certification Office. Amendment 39-4907 becomes effective on September 20, 1984. This Amendment 39-4921 becomes effective on September 20, 1984. FOOTER:
Document Text
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AD Final Rules - DRS_84-19-03_R.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 84-19-03 R1 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: AVCO LYCOMING Model TIO-540-V2AD and LTIO-540-V2AD Engines Subject: Cylinder Assemblies Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 09/20/1984 Make: Lycoming Engines Model: LTIO-540-V2AD | TIO-540-V2AD 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: 84-19-03 R1 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-4921 AD NUMBER: 84-19-03 R1 SUBJECT HEADING: AVCO LYCOMING Model TIO-540-V2AD and LTIO-540-V2AD Engines ACTION: SUMMARY: DATES: Effective September 20, 1984. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 84-19-03 R1 AVCO LYCOMING: Amendment 39-4907 as amended by Amendment 39-4921. Applies to Avco Lycoming model TIO-540-V2AD engines Serial Numbers L-8620-61A and below and model LTIO-540- V2AD Serial Numbers L-2820-68A and below, having P/N LW-18852 cylinder assemblies. These engines are installed in Piper PA-31P-350 "Mojave" aircraft. Compliance is required as indicated, unless already accomplished. Cracks have occurred in the area of the intake valve seat of the cylinder head in the above engine models. To prevent possible failure of the engine cylinder assembly, P/N LW-18852, accomplish the following: (a) Within the next 50 hours of time-in-service after the effective date of this AD, or prior to accumulating 550 hours time-in-service, whichever occurs later, replace all P/N LW-18852 cylinder assemblies with P/N LW-19281 cylinder assemblies which are included in kit P/N LW-19297-S. Cylinder part number identification is located on the cylinder head casting in the rocker box area. (b) In accordance with FAR 21.197 and 21.199, the aircraft may be flown to a location where the inspections or alterations required by this AD can be performed. (c) An equivalent means of compliance with the requirements of this AD may be approved by the Manager, New York Aircraft Certification Office. Amendment 39-4907 becomes effective on September 20, 1984. This Amendment 39-4921 becomes effective on September 20, 1984. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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