| AD Number | 60-11-06 | Status | Active |
| Effective Date | Not specified | Issue Date | Not specified |
| Docket Number | Unknown | Amendment | N/A |
| Product Type | ["Engine"] | Product Subtype | Not specified |
| CFR Part | --- - Part 39 | CFR Section | N/A |
| Citation | This information is not available. | ||
| Manufacturer(s) | Lycoming Engines |
| Model(s) | GO-480-C1B6 GO-480-C1D6 GO-480-C2C6 GO-480-C2D6 GO-480-C2E6 GO-480-C3A6 GO-480-G1A6 GO-480-G1B6 GO-480-G1D6 GO-480-G2D6 GSO-480-A1A6 GSO-480-A1C6 GSO-480-B1A6 GSO-480-B1B6 (O-480-1) GSO-480-B1C6 GSO-480-B2D6 |
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.)