- Effective
- February 27, 1962
- Models
- VO-540-A1A, VO-540-B1A, VO-540-B1B, VO-540-B1B3, VO-540-B1C, VO-540-B1D and 3 more
- Data sheet
- TCDSE-304
- Registered aircraft
- 113 matched by model
- Product
- Engine
Unofficial copy of the text in the FAA’s Dynamic Regulatory System. The FAA’s own copy is the authoritative one. DRS record last changed May 30, 2024.
Copies of the files this page was built from, with their SHA-256. Retrieved October 18, 2026.
| File | Size | SHA-256 | Original |
|---|---|---|---|
| FAA DRS HTML | 19 KB | e12e5e3e…1a25dcf | FAA DRS (API key needed) |
On this page
The airworthiness directive
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.
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 113
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1954 | 1 |
|---|---|
| 1958 | 1 |
| 1959 | 4 |
| 1960 | 6 |
| 1961 | 9 |
| 1962 | 3 |
| 1963 | 4 |
| 1964 | 10 |
| 1965 | 11 |
| 1966 | 4 |
| 1967 | 3 |
| 1968 | 1 |
| 1969 | 2 |
| 1970 | 3 |
| 1971 | 3 |
| 1975 | 1 |
| 1976 | 4 |
| 1977 | 4 |
| 1978 | 1 |
| 1979 | 2 |
| 1980 | 4 |
| 1981 | 1 |
| 1982 | 2 |
| 1984 | 1 |
| 1988 | 1 |
| 1993 | 2 |
| 1996 | 1 |
| 2000 | 2 |
22 with no year recorded