- Models
- GO-480-C1B6, GO-480-C1D6, GO-480-C2C6, GO-480-C2D6, GO-480-C2E6, GO-480-C3A6 and 10 more
- Registered aircraft
- 318 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 | 18 KB | 5ccb58f2…c0ea90f | FAA DRS (API key needed) |
On this page
The airworthiness directive
60-11-06 LYCOMING: Amdt. 162 Part 507 Federal Register May 27, 1960. Applies to GO-480-C, -G and All GSO-480 Series Engines.
Compliance required at first engine overhaul after July 1, 1960.
To prevent excessive crankshaft counterweight bushing wear and subsequent detuning of the counterweights, crankshafts with cast counterweights must be modified to incorporate forged counterweights with hardened steel counterweight bushings.
(Lycoming Service Bulletin No. 249A covers this same subject.)
Affected TCDS · 2
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 318
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1924 | 1 |
|---|---|
| 1941 | 3 |
| 1942 | 1 |
| 1943 | 4 |
| 1944 | 2 |
| 1945 | 4 |
| 1946 | 10 |
| 1947 | 11 |
| 1948 | 1 |
| 1950 | 4 |
| 1951 | 2 |
| 1952 | 1 |
| 1953 | 1 |
| 1954 | 5 |
| 1955 | 23 |
| 1956 | 24 |
| 1957 | 12 |
| 1958 | 9 |
| 1959 | 17 |
| 1960 | 24 |
| 1961 | 8 |
| 1962 | 17 |
| 1963 | 5 |
| 1964 | 1 |
| 1965 | 3 |
| 1966 | 8 |
| 1967 | 7 |
| 1968 | 7 |
| 1969 | 6 |
| 1970 | 8 |
| 1971 | 2 |
| 1972 | 2 |
| 1973 | 2 |
| 1974 | 14 |
| 1975 | 2 |
| 1976 | 2 |
| 1992 | 1 |
| 2000 | 1 |
| 2002 | 1 |
62 with no year recorded