COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Coolers AD/COOL/2 Stewart Warner Oil Coolers - Inspection NK and Replacement Applicability: Stewart Warner Oil Coolers: Stewart-Warner Model Numbers Begining Serial Numbers Ending Serial Numbers 8406J 12558 16212 8406L 1496 1763 8432K 514 541 8432L 631 964 10568C 1105 1141 10578B 2212 2316 10599A 7369 9013 10610A 815 1956 10614A 732 947 10622A 334 394 10634D 105 907 8446C 575 629 8437C 422 472 10641B 143 162 8493B 1269 1603 Which do not have a date ink stamped next to the nameplate. Note: Oil coolers of the above model and S/Nos. that do have a date ink stamped next to the nameplate have been inspected and found satisfactory for continued use. Requirement: 1. Inspect the engine oil cooler for applicability within the affected model and serial number range. 2. If the oil cooler has accumulated 10 hours or less time in service since new, replace with a serviceable cooler not of the above serial numbered range unless the serial number has a date ink stamped next the oil cooler nameplate. COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES 3. If the oil cooler has accumulated more than 10 hours time in service since new, inspect the cooler for oil leakage. 4. If leakage is evident, replace cooler as in paragraph 2. 5. If no leakage is evident, fabricate and install the following placard on the aircraft instrument panel: "Visually inspect oil cooler for leakage prior to each flight". Note 1: FAA AD 80-25-07 refers. Note 2: This inspection may be performed by the pilot. These oil coolers may be installed on, but not limited to, the following aircraft: Bellanca Models : 7GCAA, 7GCBC, 7KCAB, 8GCBC and 8KCAB. Cessna Models: 152, A152, F152, FA152, 172I, 172K, 172L, 172M, (including Reims Aviation) 172N, 172P, 172RG, F172L, F172M, F172P, 177, 177A, 177B, 177RG, F177RG, R182, FR182, TR182, T182, A188B, T188C, 210N, T210N and P210N. Piper Models: PA-38-112 and PA-44. Mooney Models: M20C, M20E, M20F, M20G and M20J. Great Lakes Models: 2T-1A-1 and 2T-1A-2. Beech Models: 76, 77 and C-23. Compliance: For Para. 2 - Inspect before further flight. Replace within 10 hours time in service. For Para. 3 - Inspect before further flight. Background: Improper heat treatment during manufacture has resulted in several failures of oil coolers overseas. In flight failure of an oil cooler may be a fire hazard.