| AD Number | 73-23-01 | Status | Active |
| Effective Date | January 13, 1977 | Issue Date | Not specified |
| Docket Number | Unknown | Amendment | 39-2804 |
| 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 Textron Lycoming, AVCO Corporation |
| Model(s) | AIO-360-A1A AIO-360-A1B AIO-360-A2A AIO-360-A2B AIO-360-B1B GO-480-G1D6 HIO-360-A1A HIO-360-B1A HIO-360-B1B HIO-360-C1A HIO-360-C1B HIO-360-D1A IGO-540-A1A IGO-540-A1B IGO-540-A1C IGO-540-B1A IGO-540-B1B IGO-540-B1C IGSO-480-A1E6 IGSO-540-A1A IGSO-540-A1C IGSO-540-A1D IGSO-540-A1E IGSO-540-A1F IGSO-540-B1A IGSO-540-B1C 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-D1A IO-320-D1B IO-320-E1A IO-320-E2A IO-320-E2B IO-360-A1A IO-360-A1B IO-360-A1B6 IO-360-A1B6D IO-360-A1C IO-360-A1D IO-360-A1D6 IO-360-A2A IO-360-A2B IO-360-A2C IO-360-B1A IO-360-B1B IO-360-B1C IO-360-B1D IO-360-B1E IO-360-B1F IO-360-B1F6 IO-360-B2E IO-360-B2F IO-360-B2F6 IO-360-B4A IO-360-C1A IO-360-C1B IO-360-C1C IO-360-C1D6 IO-360-C1F IO-360-D1A IO-360-E1A IO-360-F1A IO-540-A1A5 IO-540-B1A5 IO-540-C4B5 IO-540-D4A5 IO-540-E1A5 IO-540-E1B5 IO-540-G1D5 IO-540-J4A5 IO-540-K1A5 IO-540-K1B5 IO-540-K1C5 IO-540-K1E5 IO-540-K1E5D LIO-360-C1E6 O-320-A1A O-320-A1B O-320-A2A O-320-A2B O-320-A2C O-320-A2D 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-D1C O-320-D1F O-320-D2A O-320-D2B O-320-D2C O-320-D2F O-320-E1A O-320-E1B O-320-E1C O-320-E1F O-320-E2A O-320-E2B O-320-E2C O-320-E2D O-320-E2F O-320-E2G O-320-E2H O-320-E3D O-320-E3H O-360-A1A O-360-A1C O-360-A1D O-360-A1F O-360-A1F6 O-360-A1F6D O-360-A1G O-360-A1G6 O-360-A1H O-360-A1LD O-360-A2A O-360-A2D O-360-A2E O-360-A2F O-360-A2G O-360-A2H O-360-A3A O-360-A3D O-360-A4A O-360-A4AD O-360-A4G O-360-A4J O-360-A5AD 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-A1C5 O-540-A1D5 O-540-B1A5 O-540-B2B5 O-540-B2C5 O-540-B4B5 O-540-E4A5 O-540-E4B5 O-540-E4C5 O-540-G1A5 TIGO-541-B1A TIGO-541-C1A TIGO-541-D1A TIGO-541-E1A TIGO-541-G1AD TIO-360-A1A TIO-360-A1B TIO-360-A3B6 TIO-360-C1A6D TIO-540-A2B TIO-540-A2C TIO-540-C1A TIO-540-J2BD TIO-541-A1A TIO-541-E1A4 TIO-541-E1B4 TIO-541-E1C4 TIO-541-E1D4 VO-540-A1A VO-540-A2A VO-540-B1A VO-540-B1B VO-540-B1B3 VO-540-B1C VO-540-B1D VO-540-B1E VO-540-B1F VO-540-B1H3 VO-540-B2A VO-540-B2C VO-540-B2D VO-540-B2E VO-540-B2G VO-540-C1A VO-540-C1B VO-540-C1C3 VO-540-C2A VO-540-C2B VO-540-C2C IO-720-A1A IO-720-A1B IO-720-B1A IO-720-B1B IO-720-D1B |
73-23-01 AVCO LYCOMING: Amendment 39-1738 as amended by Amendment 39-1825, 39-1984 and 39-2188 is further amended by Amendment 39-2804. Applies to all Lycoming series engines and all engines overhauled by Lycoming (also known as remanufactured) listed below and in Lycoming Service Bulletin No. 367F and in Supplement No. 1 for Lycoming Service Bulletin No. 367F.
O-320 Series L-6798-39A thru L-6815-39A
IO-320 Series L-4952-55
O-360 Series L-17389-36A thru L-17408-36A, L-17410-36A thru L-17427-36A, L-17429-36A thru L-17452-36A, L-17454-36A thru L-17479-36A, L-17481-36A thru L-17495-36A, L-17497-36A thru L-17500-36A, L-17503-36A thru L-17505-36A, L-17516-36A thru L-17518-36A
RL-523-36A, RL-2030-36A, RL-3933-36A, RL-7173-36A, RL-11169-36A, RL-16937-36A
IO & HIO-360 Series L-9409-51A, L-9410-51A, L-9415-51A thru L-9417-51A, L-9419-51A thru L-9427-51A, L-9438-51A thru L-9453-51A, L-9455-51A, L-9457-51A thru L-9498-51A, L-9500-51A thru L-9517-51A, L-9519-51A thru L-9564-51A, L-9566-51A thru L-9616-51A, L-9618-51A, L-9620-51A thru L-9640-51A, L-9642-51A thru L-9651-51A, L-9653-51A thru L-9713-51A, L-9715-51A, L-9716-51A, L-9718-51A thru L-9768-51A, L-9770-51A thru L-9774-51A, L-9776-51A thru L-9826-51A, L-9828-51A thru 9848-51A, L-9850-51A thru L-9930-51A, L-9932-51A thru L-9962-51A, L-9964-51A thru L-9995-51A, L-9997-51A thru L-10090-51A, L-10092-51A thru L-10113-51A, L-10115-51A thru L-10249-51A, L-10257-51A thru L-10261-51A, L-10263-51A thru L-10273-51A, L-10279-51A thru L-10281-51A, L-10284-51A thru L-10290-51A
RL-191-51A, RL-591-51A, RL-595-51A, RL-702-51A, RL-776-51A, RL-778-51A, RL-955-51A, RL-993-51A, RL-1267-51A, RL-1272-51A, RL-1435-51A, RL-1481-51A, RL-1515-51A, RL-1642-51A, RL-1769-51A, RL-1845-51A, RL-1847-51A, RL-2143-51A, RL-2227-51A, RL-2249-51A, RL-2464-51A, RL-2476-51A, RL-2508-51A, RL-2562-51A, RL-2629-51A, RL-2672-51A, RL-2923-51A, RL-3048-51A, RL-3113-51A, RL-3195-51A, RL-3235-51A, RL-3318-51A, RL-3344-51A, RL-3392-51A, RL-3427-51A, RL-3464-51A, RL-3540-51A, RL-3573-51A, RL-3738-51A, RL-3832-51A, RL-3868-51A, RL-3974-51A, RL-4787-51A, RL-4960-51A, RL-5082-51A, RL-5085-51A, RL-5652-51A, RL-5685-51A, RL-5751-51A, RL-5824-51A, RL-6331-51A, RL-6345-51A, RL-6350-51A, RL-6417-51A, RL-6469-51A, RL-6623-51A, RL-6652-51A, RL-6693-51A, RL-6724-51A, RL-6744-51A, RL-6950-51A, RL-7043-51A, RL-7201-51A, RL-7357-51A, RL-7422-51A, RL-7475-51A, RL-7806-51A, RL-7852-51A, RL-7886-51A, RL-8000-51A, RL-8354-51A, RL-8872-51A, RL-9611-51A, RL-9812-51A
AIO-360 Series L-165-63A thru L-171-63A
TIO-360 Series L-112-64A thru L-115-64A
LIO-360 Series L-440-67A thru L-480-67A, L-487-67A thru L-512-67A, L-514-67A thru L-537-67A, L-545-67A thru L-591-67A, L-593-67A thru L-632-67A, L-634-67A thru L-648-67A, L-650-67A thru L-655-67A, L-660-67A
GO-480-G1D6 Series RL-288-37, RL-482-37
IGSO-480-A1E6 Series RL-829-44, RL-1258-44, RL-1508-44, RL-1509-44, RL-1518-44, RL-1586-44
IGO-540 Series L-320-49
VO-540 Series L-2280-43, L-2281-43
RL-343-43, RL-376-43, RL-456-43, RL-485-43, RL-522-43, RL-564-43, RL-691-43, RL-694-43, RL-846-43, RL-849-43, RL-1125-43, RL-1148-43, RL-1186-43, RL-1333-43, RL-1452-43, RL-1571-43, RL-1700-43, RL-1731-43, RL-1828-43, RL-1900-43, RL-1913-43, RL-1929-43, RL-1931-43, RL-2041-43, RL-2125-43, RL-2142-43, RL-2208-43, RL-2224-43, RL-2245-43, RL-2269-43, RL-2275-43 thru RL-2279-43
O-540-A1C5, -A1D5, -B1A5, -B2B5, -B4B5, -B2C5, -E4A5, -E4B5, -E4C5, G1A5 Series L-15062-40, L-15063-40, L-15108-40, L-15117-40, L-15132-40, L-15133-40, L-15161-40, L-15221-40, L-15222-40, L-15225-40 thru L-15227-40, L-15242-40 thru L-15249-40, L-15297-40, L-15300-40, L-15304-40 thru L-15320-40, L-15322-40 thru L-15367-40, L-15372-40
RL-1040-40, RL-1207-40, RL-3330-40, RL-6768-40, RL-7670-40, RL-9416-40, RL-10859-40, RL-11312-40, RL-11377-40, RL-11420-40, RL-11862-40, RL-13058-40, RL-13637-40, RL-14194-40
IO-540-A1A5, -B1A5, -C1A5, -C4B5, -D4A5, -E1A5, -E1B5, -G1D5, J4A5, -K1A5, -K1B5, -K1C5, -K1E5, -K1E5D Series L-10118-48 thru L-10122-48, L-10124-48 thru L-10127-48, L-10144-48, L-10145-48, L-10209-48, L-10213-48, L-10221-48 thru L-10260-48, L-10263-48 thru L-10267-48, L-10303-48, L-10304-48, L-10306-48 thru L-10308-48, L-10317-48 thru L-10320-48, L-10398-48, L-10459-48, L-10487-48 thru L-10546-48, L-10548-48 thru L-10562-48, L-10564-48 thru L-10569-48, L-10571-48 thru L-10584-48
RL-113-48, RL-622-48, RL-918-48, RL-1170-48, RL-1606-48, RL-1640-48, RL-2015-48, RL-2050-48, RL-2210-48, RL-2271-48, RL-2276-48, RL-3610-48, RL-3614-48, RL-3732-48, RL-4057-48, RL-4103-48, RL-4506-48, RL-5778-48, RL-7116-48
TIO-540-A2B, -A2C, -C1A, TIO-540-J2BD Series L-2412-61 thru L-2414-61, L-2416-61 thru L-2419-61, L-2489-61 thru L-2498-61, L-2501-61 thru L-2503-61, L-2550-61, L-2557-61, L-2562-61, L-2566-61, L-2567-61, L-2572-61 thru L-2583-61, L-2585-61 thru L-2588-61, L-2590-61, L-2591-61, L-2595-61 thru L-2597-61
RL-122-61, RL-226-61, RL-759-61, RL-771-61, RL-1263-61,RL-1268-61, RL-1346-61, RL-1488-61, RL-1679-61, RL-1683-61, RL-2189-61
LIO-540 Series L-102-68, L-105-68, L-109-68, L-113-68 thru L-117-68, L-125-68, L-128-68 thru L-130-68, L-147-68 thru L-152-68, L-154-68, L-155-68
RL-106-68
IGSO-540 Series L-3060-50, L-3061-50, L-3070-50, L-3071-50, L-3074-50, L-3085-50 thru L-3087-50, L-3090-50, L-3093-50, L-3094-50
RL-315-50, RL-518-50, RL-528-50, RL-821-50, RL-1014-50, RL-1100-50, RL-1151-50, RL-1174-50, RL-1216-50, RL-1517-50, RL-1558-50, RL-1591-50, RL-1682-50, RL-1694-50, RL-1700-50, RL-1773-50, RL-1788-50, RL-1821-50, RL-2003-50, RL-2157-50, RL-2187-50, RL-2385-50, RL-2479-50, RL-2543-50, RL-2604-50, RL-2907-50
TIO-541 Series L-866-59 thru L-873-59
TIGO-541 Series L-343-62 thru L-352-62
RL-161-62
IO-720-A, -B and -C Series L-505-54, L-506-54, L-508-54 thru L-529-54, L-532-54 thru L-538-54, L-540-54, L-541-54, L-546-54 thru L-549-54, L-551-54 thru L-554-54
Compliance required within 50 hours in service after the effective date of this AD, unless already accomplished.
To prevent piston pin failures resulting from grinding cracks which occurred during manufacture, comply with Lycoming Service Bulletin No. 367F or equivalent procedure approved by Chief, Engineering and Manufacturing Branch, FAA, Eastern Region.
The manufacturer's specifications and procedures identified and described in this directive are incorporated herein and made a part hereof pursuant to 5 U.S.C. 552(a)(1). All persons affected by this directive who have not already received these documents from the manufacturer, may obtain copies upon request to Avco Lycoming Division, Service Department, Williamsport Pennsylvania 17701. These documents may also be examined at the Engineering and Manufacturing Branch, Federal Aviation Administration, Eastern Region, Federal Building, John F. Kennedy International Airport, Jamaica, New York 11430. A historical file on this AD which includes the incorporated material in full is maintained by the FAA at its Eastern Region Headquarters.
Amendment 39-1738 was effective November 1, 1973.
Amendment 39-1825 was effective May 1, 1974.
Amendment 39-1984 was effective October 10, 1974.
Amendment 39-2188 was effective April 30, 1975.
This amendment 39-2804 is effective January 13, 1977.