| AD Number | 66-20-04 | Status | Active |
| Effective Date | August 27, 1966 | Issue Date | Not specified |
| Docket Number | Unknown | Amendment | 39-277 |
| 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) | IO-320-A1A IO-320-A2A IO-320-B1A IO-320-B1B IO-320-B1C IO-320-B1D IO-320-B2A IO-320-C1A IO-320-E2A IO-360-A1A IO-360-A1B IO-360-A2A IO-360-A2B IO-360-B1A IO-360-B1B IO-360-B1C IO-360-B1D IO-360-B1E IO-360-C1A IO-360-C1B IO-360-D1A IO-540-A1A5 IO-540-B1A5 IO-540-B1B5 IO-540-B1C5 IO-540-C1B5 IO-540-C1C5 IO-540-C2C IO-540-C4B5 IO-540-C4C5 IO-540-D4A5 IO-540-E1A5 IO-540-E1B5 IO-540-G1A5 IO-540-G1B5 IO-540-G1C5 IO-540-J4A5 IO-540-K1A5 IO-540-K1B5 O-320-A1A O-320-A1B O-320-A2A O-320-A2B O-320-A2C O-320-A3A O-320-A3B O-320-A3C O-320-B1A O-320-B1B O-320-B2A O-320-B2B O-320-B2C O-320-B3A O-320-B3B O-320-B3C O-320-C1A O-320-C1B O-320-C2A O-320-C2B O-320-C2C O-320-C3A O-320-C3B O-320-C3C O-320-D1A O-320-D1B O-320-D2A O-320-D2B O-320-D2C O-320-E1A O-320-E1B O-320-E2A O-320-E2B O-320-E2C O-340-A1A O-340-A2A O-340-B1A O-360-A1A O-360-A1C O-360-A1D O-360-A2A O-360-A2D O-360-A2E O-360-A3A O-360-A3D O-360-A4A O-360-B1A O-360-B1B O-360-B2A O-360-B2B O-360-C1A O-360-C1C O-360-C2A O-360-C2B O-360-C2C O-360-C2D O-360-D1A O-360-D2A O-360-D2B O-540-A1A O-540-A1A5 O-540-A1B5 O-540-A1C5 O-540-A1D O-540-A1D5 O-540-A2B O-540-A3D5 O-540-A4A5 O-540-A4B5 O-540-A4C5 O-540-A4D5 O-540-B1A5 O-540-B1B5 O-540-B2A5 O-540-B2B5 O-540-B4A5 O-540-B4B5 O-540-D1A5 O-540-E4A5 O-540-E4B5 O-540-E4C5 O-540-F1A5 O-540-F1B5 O-540-J1A5D O-540-J2A5D |
66-20-04 LYCOMING: Amdt. 39-277, Part 39, Federal Register August 18, 1966. Applies to Model O-320, IO-320, O-340, O-360, IO-360, O-540, and IO-540 Series Engines Equipped With AC Oil Filters Except O-320- A, -E Series, Engine Serial Number 16128-27 and Higher; O-320-B, -C, and -D Series, Engine Serial Number 6217-39 and Higher; IO-320 Series, Engine Serial Numbers 2110-55A, 2113-55A and Higher; O-360 Series, Engine Serial Number 9346-36A and Higher; O-540 Series, Engine Serial Numbers 9770-40, 9800-40, 9803-40 and Higher; and IO-540 Series, Engine Serial Numbers 2831-48, 2835-48, 2840-48 and Higher.
Compliance required within the next 50 hours' time in service after the effective date of this AD, unless already accomplished.
To prevent further failures of oil filter adapter gasket, P/N 74904, accomplish the following:
(a) Replace gasket, P/N 74904, with gasket, P/N 76691.
(b) Inspect the stud, cap screws, and tapped holes in the accessory housing mounting padfor proper length or depth, as applicable, in accordance with Lycoming Service Bulletin No. 307 or later FAA-approved revision. Replace studs and cap screws of improper length and retap holes of insufficient depth as necessary in accordance with Bulletin No. 307 or later FAA-approved revision.
This directive effective August 27, 1966.