AD/CFM56/11 - Accessory and Transfer Gearbox Replacement (Cth)

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES

CFM International Turbine Engines - CFM56 Series

AD/CFM56/11 Accessory and Transfer Gearbox Replacement

6/98 TX

Applicability: CFM International (CFMI) CFM 56-5, 56-5B and 56-5C, all models, turbofan engines with serial numbers as listed below (Warning: some engines may appear in more than one list):

List 1A: (First batch of CFM56-5 Engines with suspect gearshaft cluster spur assembly 31x71 teeth (line 2) in the accessory gearbox (AGB). Engines Serial Number (ESN): 731951, 731954, 731955, 731959, 731960, 731962, 731963, 731966, 731969 (See Service Bulletin CFM56-5 S/B 72-523 Revision 1).

List 1B: (Second batch of CFM56-5 engines with suspect gearshaft cluster spur assembly 31x71 teeth (line 2) in the accessory gearbox (AGB). ESN 731943 to 731948, 731952, 731953, 731956 to 731958, 731973. (See Service Bulletin CFM56-5 S/B 72-523 Revision 1).

List 2A: (First batch of CFM56-5B Engines with suspect gearshaft cluster spur assembly 31x71 teeth (line 2) in the accessory gearbox (AGB). ESN: 779316, 779318, 779322, 779323, 779330, 779332, 779339 (See Service Bulletin CFM56-5B S/B 72-211 Revision 1).

List 2B: (Second batch of CFM56-5B Engines with suspect gearshaft cluster spur assembly 31x71 teeth (line 2) in the accessory gearbox(AGB). ESN 779307 to 779315, 779317, 779327 (See Service Bulletin CFM56-5B S/B 72-211 Revision 1).

List 3A: (First batch of CFM56-5C engines with suspect gearshaft cluster spur assembly 31x71 teeth (line 2) in the accessory gearbox (AGB) ESN: 741666, 741668, 741670 to 741674, 741676, 741677, 741680, 741682, 741684 (see Service Bulletin CFM56-5C S/B 72-350 Revision 1).