AD 62-03-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Lycoming Engines | VO-540-A1A | LYCOMING Model VO-540 Series Engines |
| engine | Lycoming Engines | VO-540-B1A | LYCOMING Model VO-540 Series Engines |
| engine | Lycoming Engines | VO-540-B1B | LYCOMING Model VO-540 Series Engines |
| engine | Lycoming Engines | VO-540-B1B3 | LYCOMING Model VO-540 Series Engines |
| engine | Lycoming Engines | VO-540-B1C | LYCOMING Model VO-540 Series Engines |
| engine | Lycoming Engines | VO-540-B1D | LYCOMING Model VO-540 Series Engines |
| engine | Lycoming Engines | VO-540-B1E | LYCOMING Model VO-540 Series Engines |
| engine | Lycoming Engines | VO-540-C1A | LYCOMING Model VO-540 Series Engines |
| engine | Lycoming Engines | VO-540-C1B | LYCOMING Model VO-540 Series Engines |
Unsafe Condition
Failures of the hydraulic valve tappet body and plunger assembly
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Install Lycoming P/N 72876 plunger assembly and Lycoming P/N 73061 tappet body at the next engine overhaul after the effective date of this AD.
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Compliance Time
next engine overhaul after the effective date of this AD
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Affected Aircraft
Lycoming Engines VO-540 Series Engines including models VO-540-A1A, VO-540-B1A, VO-540-B1B, VO-540-B1B3, VO-540-B1C, VO-540-B1D, VO-540-B1E, VO-540-C...
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Federal Register Abstract
Hydraulic Valve Tappet Body and Plunger Assembly
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_62-03-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 62-03-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: LYCOMING Model VO-540 Series Engines Subject: Hydraulic Valve Tappet Body and Plunger Assembly Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 02/27/1962 Make: Lycoming Engines Model: VO-540-A1A | VO-540-B1A | VO-540-B1B | VO-540-B1B3 | VO-540-B1C | VO-540-B1D | VO-540-B1E | VO-540-C...Show more Product Type: Engine Product Subtype: Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: Updated RGL applicability to match AD applicability; CAR C-11-185 AIRWORTHINESS DIRECTIVES FINAL RULES: 62-03-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 62-03-02 SUBJECT HEADING: LYCOMING Model VO-540 Series Engines ACTION: SUMMARY: DATES: Effective February 27, 1962. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 62-03-02 LYCOMING: Amdt. 394 Part 507 Federal Register January 26, 1962. Applies to All VO-540 Series Engines. Compliance required as indicated. To preclude failures of the hydraulic valve tappet body and plunger assembly, an improved hydraulic tappet body and plunger assembly has been provided. Unless already incorporated, install a Lycoming P/N 72876 plunger assembly and a Lycoming P/N 73061 tappet body at the next engine overhaul after the effective date of this AD. (Lycoming Service Instruction No. 1011 covers this same subject.) This directive effective February 27, 1962. FOOTER:
Document Text
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AD Final Rules - DRS_62-03-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 62-03-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: LYCOMING Model VO-540 Series Engines Subject: Hydraulic Valve Tappet Body and Plunger Assembly Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 02/27/1962 Make: Lycoming Engines Model: VO-540-A1A | VO-540-B1A | VO-540-B1B | VO-540-B1B3 | VO-540-B1C | VO-540-B1D | VO-540-B1E | VO-540-C...Show more 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: Updated RGL applicability to match AD applicability; CAR C-11-185 AIRWORTHINESS DIRECTIVES FINAL RULES: 62-03-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 62-03-02 SUBJECT HEADING: LYCOMING Model VO-540 Series Engines ACTION: SUMMARY: DATES: Effective February 27, 1962. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 62-03-02 LYCOMING: Amdt. 394 Part 507 Federal Register January 26, 1962. Applies to All VO-540 Series Engines. Compliance required as indicated. To preclude failures of the hydraulic valve tappet body and plunger assembly, an improved hydraulic tappet body and plunger assembly has been provided. Unless already incorporated, install a Lycoming P/N 72876 plunger assembly and a Lycoming P/N 73061 tappet body at the next engine overhaul after the effective date of this AD. (Lycoming Service Instruction No. 1011 covers this same subject.) This directive effective February 27, 1962. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.
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