98-17-11: Crankshafts

98-17-11 Textron Lycoming and Teledyne Continental Motors: Amendment 39-10713. Docket 98-ANE-27-AD. Textron Lycoming (LYC) O-235, O-235-C1, O-235-C2C, O-235-L2C, O-235-N2C, O-290, O-290-D2, O-320, O-320-A, O-320-A1A, O-320-A2B, O-320-B2B, O-320-B2C, O-320-D2J, O-320-D3G, O-320-E2A, O-320-E2D, O-320-E2G, O-320-E3D, O-320-H2AD, O-360, O-360-A1A, O-360-A1D, O-360-A3A, O-360-A4A, O-360-A4K, O-360-B1B, IO-360-F1A6, AEIO-320-E1B, HIO-360-C1A, IO-320, IO-320-B1A, IO-360, IO-360-A1A, IO-360-A1B6, IO-360-B1E, IO-360-C, IO-360-CIC, IO-360-C1C6, IO-360-C1D6, IO-360-D, O-540-A1B5, O-540-A1D5, O-540-R2AD, IO-540, IO-540-C4B5, IO-540-S1A5, TIO-540-A2, LIO-320-C1A, LIO-360-C1E6, and IO-720 reciprocating engines; and Teledyne Continental Motors (TCM) A-65, A65-3, A65-8, A75, A75-8, C75-12, C85, C85-8, C85-12, C90-8FJ, C90-12, O-200, O-200-A, O-300, O-300-D, IO-360-C, E-185-4, E-225-8, O-470, O-470-K, O-470-L, O-470-R, O-470-11, IO-470, IO-470-N, IO-470-S, IO-520, IO-520-D, GTSIO-520, and TSIO-520-VB reciprocating engines, with installed crankshafts repaired by Nelson Balancing Service, Bedford, Massachusetts, Repair Station Certificate No. NB7R820J, between February 1, 1995, and December 31, 1997, inclusive, as listed (by work order (W/O)) in Table 1 of this AD. Table 1 ENGINE & MODEL W/O DATE ENGINE SER# ENGINE & MODEL W/O DATE ENGINE SER# LYC: AEIO-320-E1B 1134 2/17/96 L-5653-55A HIO-360-C1A 1155 2/7/96 L-12126-51A IO-320 1141 1/17/96 IO-320-B1A 1525 11/14/97 IO-360 1314 12/17/96 IO-360 IN6137 8/7/97 IO-360-A1A 1230 6/10/96 L-474-51 IO-360-A1A 1289 10/23/96 L-4085-5174 IO-360-A1A 1415b 5/23/97 RL-3920-51A IO-360-A1 B6 1463 7/31/97 IO-360-B1E 1312 12/12/96 L-4453-51A IO-360-C 1146 1/23/96 R-51448-9-C IO-360-C1C 1336 2/10/97 IO-360-C1C 1518 12/9/97 IO-360-C1C6 1530 11/25/97 IO-360-C1C6 1537 12/9/97 L-19294-51A IO-360-C1D6 1286 4/28/97 IO-360-D 1540 12/2/97 IO-360-F1A6 1176 3/7/96 L-27423-36A IO-540 1014 2/8/95 IO-540 1056 6/13/95 IO-540 1302 12/5/96 IO-540-C4B5 1313 12/17/96 L-19547-48 IO-540-S1A5 1513 10/27/97 L-19597-48A IVO-435-G1A 1271 10/1/96 LIO-320-C1A 1158 2/8/96 LIO-360-C1E6 1280 10/7/96 LIO-360-C1E6 1281 10/9/96 O-235 1013 2/21/95 O-235 1051 6/2/95 O-235 1054 6/9/95 O-235 1057 6/14/95 L-9041-15 O-235 1058 6/29/95 O-235 1060 6/30/95 O-235 1069 8/10/95 O-235 1110 2/20/96 O-235 1145 1/23/96 O-235 1151 1/25/96 O-235 1160 2/9/96 RL-24636-15 O-235 1305 12/5/96 L-22542-15 O-235 1329 2/11/97 O-235 1332 2/11/97 O-235 1481 9/2/97 O-235-C1 1089 10/8/95 L-6475-15 O-235-C1 1188 4/2/96 L-7143-15 O-235-C1 1335 3/12/97 L-5569-15 O-235-C1 1367 3/24/97 O-235-C2C 1019 2/24/95 L-12284-15 O-235-C2C 1040 5/8/95 O-235-C2C 1105 12/1/95 L-12273-15 O-235-L2C 1030 4/6/95 L-14545-15 O-235-L2C 1036 4/24/95 O-235-L2C 1037 4/24/95 L-23012-15 O-235-L2C 1050 6/2/95 L-15542-15 O-235-L2C 1062 7/5/95 L-18306-15 O-235-L2C 1067 8/8/95 O-235-L2C 1070 8/10/95 L-16005-15 O-235-L2C 1095 11/14/95 RL-023227-15 O-235-L2C 1101 11/4/95 L-15300-15 O-235-L2C 1102 11/15/95 L-20183-15 O-235-L2C 1162 2/14/96 L-16114-15 O-235-L2C 1251 8/22/96 O-235-L2C 1219 5/16/96 L-21215-15 O-235-L2C 1365 3/24/97 O-235-L2C 1285 10/19/96 O-235-L2C 1414 8/5/97 O-235-L2C 1400 4/28/97 O-235-L2C 1433 6/26/97 L-17074-15 O-235-L2C 1417 12/5/97 O-235-L2C 1504 10/31/97 O-235-L2C 1435 6/9/97 O-235-L2C 1524 11/12/97 O-235-L2C 1508 11/18/97 O-235-L2C 2010 11/19/97 O-235-L2C 1536 11/24/97 O-290 1257 9/4/96 O-235-N2C 1511 10/29/97 L-23857-15 O-290-D2 1082 9/26/95 L-6019-21 O-290 1326 3/26/97 O-320 1024 3/17/95 O-320 1018 2/22/95 O-320 1045 5/24/95 O-320 1038 5/3/95 L-39272-27A O-320 1084 9/28/95 O-320 1116 1/8/96 O-320 1125 1/8/96 O-320 1169 2/28/96 O-320 1175 3/7/96 O-320 1184 3/28/96 O-320 1189 8/27/96 O-320 1202 4/30/96 O-320 1212 5/10/96 O-320 1283 10/17/96 O-320 1316 12/21/96 O-320 1340 2/25/97 L-24367 O-320 1347 2/18/97 O-320 1360 3/10/97 O-320 1361 3/10/97 O-320 1436 5/29/97 O-320 1468 8/14/97 O-320 1474 8/22/97 L-13130-39A O-320 1477 9/13/97 O-320 1519 11/21/97 O-320 1507 11/18/97 O-320 1171 3/1/96 O-320 1546 12/7/97 O-320-A 1194 4/13/96 O-320-A 1192 4/13/96 O-320-A1A 1244 8/13/96 L-5270-27 O-320-A 1196 4/13/96 O-320-A2B 1461 9/9/97 L-12626-27 O-320-A2B 1081 9/22/95 O-320-B2C 1315 12/17/96 O-320-B2B 1452 7/10/97 L-2977-39 O-320-D2J 1173 3/7/96 L-123412-39A O-320-D2J 1172 3/4/96 L-13039-39A O-320-D2J 1534 11/25/97 O-320-D2J 1253 9/4/96 O-320-D3G 1077 9/17/95 O-320-D2J 1539 12/3/97 O-320-D3G 1354 2/25/97 O-320-D3G 1114 1/8/96 L-10983-39A O-320-D3G 1544 12/3/97 O-320-D3G 1370 3/26/97 H45247 O-320-E2A 1191 4/13/96 L-19377-27A O-320-E2A 1103 11/10/95 L-26363-27A O-320-E2A 1439 6/9/97 L-38003-55A O-320-E2A 1317 12/21/96 L-15219-27A O-320-E2D 1078 9/17/95 O-320-E2D 1068 8/10/95 L-35528-27A O-320-E2D 1181 3/14/96 O-320-E2D 1177 3/9/96 L-44732-27A O-320-E2D 1245 8/13/96 L-40483-27A O-320-E2D 1241 8/9/96 L-42691-27A O-320-E2D 1343 2/17/97 O-320-E2D 1260 9/9/96 L-15300-15 O-320-E2D 1385 4/16/97 O-320-E2D 1346 3/2/97 L-44320-27A O-320-E2D 1533 11/25/97 O-320-E2D 1458 7/18/97 O-320-E2G 1338 3/10/97 L-38264-27A O-320-E2D 1549 12/12/97 O-320-E3D 1074 8/24/95 L-29495-27A O-320-E3D 1034 4/18/95 L-29668-27A O-320-E3D 1444 6/13/97O-320-E3D 1431 6/9/97 L-33770-27A O-320-H2AD 1322 1/22/97 L-1530-78T O-320-E3D 1500 10/7/97 L-33841-27A O-360 1157 2/7/96 O-360 1025 3/17/95 O-360 1362 3/10/97 O-360 1199 4/18/96 O-360 1394 5/6/97 O-360 1386 4/17/97 O-360-A1A 1170 2/28/96 L-20677-36A O-360 1528 11/19/97 O-360-A1A 1239 8/5/96 O-360-A1A 1214 5/14/96 L-20190-36A O-360-A3A 1531 11/25/97 O-360-A1D 1411 5/5/97 O-360-A4A 1464 7/30/97 L-24796-36A O-360-A4A 1270 9/27/96 L-14008-36A O-360-A4A 1529 11/25/97 O-360-A4A 1486 9/6/97 O-360-B1B 1262 9/9/96 L-5261-51A O-360-A4K 1166 2/22/96 L-26455-36A O-540-A1B5 1132 1/9/96 L-1165-40 O-540-A1B5 1129 12/29/95 IO-720 1510 10/26/97 O-540-A1D5 1462 7/28/97 L-5661-40 TIO-540-A2 1111 1/10/96 TIO-540-A2 1064 7/13/95 TIO-540-R2AD 1106 11/27/95 L-5949-61A TCM: A-65 1152 1/25/96 A-65 1154 2/7/96 7187 A-65 1183 2/22/96 A-65 1185 3/28/96 A-65 1233 6/23/96 A-65 1290 10/29/96 A-65 1296 11/14/96 4933868 A-65 1299 11/19/96 A-65 1325 3/26/97 A-65 1326 3/26/97 A-65 1376 4/29/97 A-65 1438 6/17/97 5890178 A-65-3 1243 8/13/96 324993 A-65-8 1541 12/2/97 A-65-8 1276 10/5/96 5762568 A75 1156 2/7/96 5321868 A75 1255 9/3/96 A75 1256 9/4/96 A75-8 1275 10/5/96 5162868 C75-12F 1293 11/4/96 3316-6-12 C85 1088 10/4/95 C85 1092 10/18/95 C-85 1198 4/17/96 29652-7-8 C-85 1297 11/14/96 C-85 1352 3/10/97 C-85 1381 4/28/97 C-85 1391 4/19/97 C-85 1392 4/19/97 C-85 1484 9/4/97 28487-6-12 C-85-8FJ 1139 1/17/96 29845-7-8 C-85-8FJ 1420 5/12/97 29465-7-8 C-85-12 1031 4/6/95 C85-12 1182 3/18/96 21596-6-12 C-85-12 1217 5/15/96 C85-12 1265 9/12/96 14657 C-85-12 1298 11/14/96 23610-6-12 C-90-8F 1471 9/6/97 42838-1-8 C-90-12 1279 10/7/96 44747-6-12 E-185-4 1124 1/16/96 25700D-1-9 E-225-8 1505 10/28/97 35477-D-9-8-P GTSIO-520 1208 5/7/96 210114-70H IO-360-C 1126 12/28/95 F-51439-9-C IO-470 1028 3/23/95 87329-R IO-470-N 1421 5/13/97 95271-1-N IO-470-S 1331 3/11/97 102412-2-S-I IO-520 1174 3/4/96 IO-520-D 1167 2/22/96 O-200 1033 4/18/95 O-200 1043 5/12/95 O-200 1049 6/2/95 O-200 214668-27A 1076 9/11/95 O-200 1104 11/21/95 213830-71A O-200 1131 1/5/96 O-200 1142 1/18/96 265349-R O-200 1147 1/23/96 O-200 1190 4/13/96 O-200 1193 4/13/96 O-200 1195 4/13/96 O-200 1197 4/17/96 O-200 1213 5/13/96 O-200 1261 9/9/96 O-200 1303 12/5/96 O-200 1321 2/7/97 28115 O-200 1324 2/6/97 O-200 1344 3/2/97 O-200 1393 5/5/97 O-200 1413 5/7/97 61001-5-4 O-200 1430 5/23/97 O-200 1437 6/17/97 255759A-48 O-200 1488 9/7/97 O-200 1506 11/18/97 O-200 1522 11/11/97 O-200-A 1052 6/21/95 254150-A-48 O-200-A 1085 9/29/95 O-200-A 1120 12/29/95 253971 O-200-A 1161 2/9/96 24R-469 O-200-A 1215 5/15/96 O-200-A 1240 8/5/96 69589-8-A O-200 1254 9/3/96 6105-71-A-R O-200-A 1264 9/12/96 O-200- 1356 3/10/97 O-300 1027 3/20/95 O-300 1042 5/12/95 34012-D-6-D O-300 1083 9/26/95 O-300 1096 10/23/95 464481 O-300 1137 1/17/96 O-300 1259 9/4/96 O-300 1387 4/22/97 O-300 1397 4/26/97 5928-9A O-300 1403 4/28/97 O-300 1423 6/9/97 3834D8Z O-300 1555 1/13/98 O-300-A 1446 6/27/97 O-300-D 1022 3/17/95 35110-D-6-D O-300-D 1079 9/17/95 O-300-D 1487 9/6/97 O-300-D 1543 12/3/97 O-470 1046 6/1/95 O-470 1383 4/4/97 O-470-11 1017 2/22/95 O-470-11 149110/19/97 O-470-11 1492 10/19/97 O-470-11 1493 10/19/97 O-470-11 1494 10/19/97 O-470-F 1236 7/25/96 76956-4-F O-470-K 1087 10/3/95 47172-6-K O-470-L 1128 1/10/96 68681-8-L O-470-L 1359 5/19/97 68245-8-L O-470-L 1399 4/28/97 O-470-R 1016 2/10/95 133087-6-R O-470-R 1086 10/3/95 O-470-R 1165 2/22/96 O-470-R 1178 3/10/96 O-470-R 1201 6/2/96 83164-1-R O-470-R 1319 1/6/97 459408 TSIO-520-VB 1055 6/9/95 Note 1: Blank spaces indicate unknown data. Where the engine serial number is blank in this table, it is either unknown or the crankshaft may not be installed in an engine. Note 2: This airworthiness directive (AD) applies to each engine identified in the preceding applicability provision, regardless of whether it has been modified, altered, or repaired in the area subject to the requirements of this AD. For engines that have been modified, altered, or repaired so that the performance of the requirements of this AD is affected, the owner/operator must request approval for an alternative method of compliance in accordance with paragraph (c) of this AD. The request should include an assessment of the effect of the modification, alteration, or repair on the unsafe condition addressed by this AD; and, if the unsafe condition has not been eliminated, the request should include specific proposed actions to address it. Compliance: Required as indicated, unless accomplished previously. To prevent crankshaft failure due to cracking, which could result in an inflight engine failure and possible forced landing, accomplish the following: (a) Within 10 hours time in service after the effective date of this AD, determine if this AD applies, as follows: (1) Determine if any repair was conducted on the engine that required crankshaft removal during the February 1, 1995, to December 31, 1997, time frame; if the engine was not disassembled for crankshaft removal and repair in this time frame, no further action is required. (2) If the engine and crankshaft was repaired during this time frame, determine from the maintenance records (engine log book), and Table 1 of this AD if the crankshaft was repaired by Nelson Balancing Service, Repair Station Certificate No. NB7R820J, Bedford, Massachusetts. The maintenance records should contain the Return to Service (Yellow) tag for the crankshaft that will identify the company performing the repair. Also the work order number contained in Table 1 of this AD was etched on the crankshaft propeller flange, adjacent to the closest connecting rod journal. Because some etched numbers will be difficult to see, if necessary, use a 10X magnifying glass with an appropriate light source to view the work order number. In addition, the propeller spinner, if installed, will have to be removed in order to see this number. (3) A person with a private pilot or higher rated certificate may make the determination of applicability of this AD provided the propeller spinner does not have to be removed. (4) If it cannot be determined who repaired the crankshaft, compliance with this AD is required. (5) If the engine and crankshaft were not repaired during the time frame specified in (a)(1), or if it is determined that the crankshaft was not repaired by Nelson Balancing Service, no further action is required. (b) Within 10 hours time in service after the effective date of this AD, accomplish the following: (1) Perform a visual inspection as defined in paragraph (b)(2) of this AD, magnetic particle inspection, and a dimensional check of the crankshaft journals, or remove from service affected crankshafts and replace with serviceable parts. (2) For the purpose of this AD, a visual inspection of the crankshaft is defined as the inspection of all surfaces of the crankshaft for cracks which include heat check cracking of the nitrided bearing surfaces, cracking in the main or aft fillet of the main bearing journal and crankpin journal, including checking the bearing surfaces for scoring, galling, corrosion, or pitting. Note 3: Further guidance on all inspection and acceptance criteria is contained in applicable TCM or LYC Overhaul or Maintenance Manuals, or other FAA-approved data. (3) Replace any crankshaft that fails the visual inspection, magnetic particle inspection, or the dimensional check with a serviceable crankshaft, unless the crankshaft can be reworked to bring it in compliance with: (i) All the overhaul requirements of the appropriate TCM or LYC Overhaul/Maintenance Manuals; or (ii) All of the FAA-approved requirements for any repair station which currently has approval for limits other than those in the appropriate TCM or LYC Overhaul/Maintenance Manuals. (4) For the purpose of this AD, a serviceable crankshaft is one which meets the requirements of paragraph (b)(3)(i) or (b)(3)(ii)of this AD. Note 4: Crankshafts removed from TCM engine models IO-360, IO-520, and TSIO-520 series engines are also subject to compliance with AD 97-26-17. (c) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, New York (LYC) or Atlanta (TCM) Aircraft Certification Offices. Operators shall submit their requests through an appropriate FAA Airworthiness Inspector, who may add comments and then send it to the Manager, New York or Atlanta Aircraft Certification Offices. Note 5: Information concerning the existence of approved alternative methods of compliance with this airworthiness directive, if any, may be obtained from the Atlanta Aircraft Certification or New York Aircraft Certification Office, as applicable. (d) Special flight permits may be issued in accordance with sections 21.197 and 21.199 of the Federal Aviation Regulations (14 CFR 21.197 and 21.199) to operate the aircraft to a location where the requirements of this AD can be accomplished. (e) This amendment becomes effective on October 19, 1998.