| AD Number | 59-10-07 | 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-A1A GO-480-B GO-480-B1A6 GO-480-B1B GO-480-B1C GO-480-B1D GO-480-C1B6 GO-480-C1D6 GO-480-C2C6 GO-480-C2D6 GO-480-C2E6 GO-480-C3A6 GO-480-D1A GO-480-E1A6 GO-480-F1A6 GO-480-F2A6 GO-480-F3A6 GO-480-F3B6 GO-480-F4A6 GO-480-F4B6 GO-480-F6 GO-480-G1A6 GO-480-G1B6 GO-480-G1D6 GO-480-G2D6 GSO-480-A1A6 GSO-480-A1C6 GSO-480-B1A6 GSO-480-B1B6 GSO-480-B1C6 GSO-480-B2D6 IGSO-480-A1A6 O-320-A1A O-320-A1B O-320-A2A O-320-A2B O-320-A3A O-320-A3B O-320-B1A O-320-B1B O-320-B2A O-320-B2B O-320-B3A O-320-B3B O-340-A1A O-340-A2A O-340-B1A O-360-A1A O-360-A2A O-360-B1A O-360-B2A O-360-C1A O-360-C2A O-360-C2B O-540-A1A O-540-A1A5 O-540-A1B5 O-540-A1C5 O-540-A2B O-540-J1A5D O-540-J2A5D |
59-10-07 LYCOMING: Applies to O-320, O-340, O-360, GO-480, GSO-480, IGSO-480 and O-540 Series Engines As Noted.
Compliance required as soon as possible but not later than July 1, 1959.
It has been found that due to normal expansion of the cylinders during engine operation, the cylinder baffle clamps can become wedged between the cylinders causing barrel distortion and possible extensive damage to the cylinder bore and piston assembly. To correct this condition, the cylinder baffle clamps must either be
(1) removed and replaced with baffle retainers and retainer hooks, or
(2) removed and reworked to provide more clearance between the lower portion of the clamp and the cylinder.
Lycoming Service Bulletin No. 254A lists the parts required to comply with alternate method (1) above. An acceptable method of accomplishing the rework noted as alternate method (2) is also outlined in that bulletin, as well as the serial numbers of engines which comply with the requirements of this directive as delivered from the factory.