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Airworthiness directives › 2009-16-03

AD 2009-16-03 Airworthiness Directives; Teledyne Continental Motors (TCM) IO-520, TSIO-520, and IO-550 Series Reciprocating Engines With Superior Air Parts, Inc. (SAP) Cylinder Assemblies Installed

Superseded. This directive was replaced by AD 2014-05-29. Work to the current one.
2009-09-09
2009-08-05
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Engine
2014-05-29

Makes named: continental, teledyne, superior air parts. Read the applicability below — it usually turns on serial or part numbers too.

Applicability*9

This AD applies to Teledyne Continental Motors (TCM) IO-520, TSIO-520, and IO-550 series reciprocating engines with SAP investment cast cylinder assemblies, part numbers (P/Ns) SA52000-A1, SA52000-A20P, SA52000-A21P, SA52000-A22P, SA52000-A23P, SA55000-A1, or SA55000-A20P, installed. These engines are installed on, but not limited to, the airplanes listed in Table 1 of this AD. Table 1—Teledyne Continental Motors-Related Aircraft Models Engine model Aircraft manufacturer Aircraft model designation IO-520-A Cessna 210 D, E, F, G, & H. IO-520-A Cessna 206. IO-520-A Cessna P206. IO-520-A Rockwell 200 D. IO-520-B Beechcraft 36 Bonanza. IO-520-B Beechcraft A36. IO-520-B Navion Range Master. IO-520-BA Beechcraft A36. IO-520-BA Beechcraft S & V35, V35A, V35B. IO-520-BA Beechcraft C33 A. IO-520-BA Beechcraft E33 A & C. IO-520-BA Beechcraft F33 A & C. IO-520-BA Navion Range Master. IO-520-BB Beechcraft A36. IO-520-BB Beechcraft V35B. IO-520-BB Beechcraft F33 A. IO-520-C & CB Beechcraft C55-E55 Baron. IO-520-D Bellanca 17-30 Viking. IO-520-D Cessna A188-300 AG Truck. IO-520-D Cessna 185. IO-520-E (Cessna 310) Exec 600. IO-520-E (Beech Baron) Pres 600. IO-520-F Cessna 207. IO-520-F Cessna U206. IO-520-K Bellanca 17-30A. IO-520-L Cessna 210 K, L, M, N & R. IO-520-L Cessna 210N II. IO-520-L Cessna 210R. IO-520-M Cessna 310R. IO-520-MB Cessna 310R. IO-550-A Cessna 310 Conversion. IO-550-B Beechcraft A36. IO-550-B (Beech Bonanza) Foxstar. IO-550-C Beechcraft 58 Baron. IO-550-D Cessna 185/188 Conversion. IO-550-E Cessna 310 Conversion. IO-550-F Cessna 206/207 Conversion. IO-550-L Cessna 210 Conversion.

Compliance

You are responsible for having the actions required by this AD performed within the compliance times specified unless the actions have already been done. Inspecting SAP Cylinder Assemblies (f) If the engine records don't contain the P/N of the cylinder heads, do the following: (1) Remove the valve cover from the cylinder assembly. (2) Look at the cylinder head for the P/N SAC 52001 I or SAC 55001 I and the word “AMCAST.” (g) For TCM IO-520, TSIO-520, and IO-550 series reciprocating engines with SAP investment cast cylinder assemblies, P/Ns SA52000-A1, SA52000-A20P, SA52000-A21P, SA52000-A22P, SA52000-A23P, SA55000-A1, or SA55000-A20P, installed, with over 750 flight hours (FH) time-in-service (TIS), do the following within 25 FH TIS after the effective date of this AD: (1) Inspect each cylinder head around the exhaust valve side for visual cracks or any signs of black combustion leakage. (2) Replace any cracked or leaking cylinders before further flight. (3) Perform a standard cylinder compression test. Guidance on standard cylinder compression tests can be found in Teledyne Continental Aircraft Engine Service Bulletin SB03-3, Differential Pressure Test and Borescope Inspection Procedures for Cylinders, dated March 28, 2003. (i) If the cylinder pressure gauge reads below 60 pounds per-square inch, determine if the unacceptable pressure is due to a cracked cylinder. (ii) To check the cylinder, apply a 2 percent soapy water solution to the side of the leaking cylinder. (iii) If you see air bubbles, indicating air leakage, on the side of the cylinder head, or near the head-to-cylinder interface, replace the cylinder assembly before further flight. (h) Thereafter, repeat the cylinder visual inspections and compression tests within 50 FH time-since-last inspection (TSLI) until the cylinders reach their time-between-overhaul (TBO) limits specified in Teledyne Continental Aircraft Engine Service Information Letter SIL98-9A, Revision A, dated March 28, 2003. Replacing SAP Cylinder Assemblies (i) For TCM IO-520, TSIO-520, and IO-550 series reciprocating engines with SAP investment cast cylinder assemblies, P/Ns SA52000-A1, SA52000-A20P, SA52000-A21P, SA52000-A22P, SA52000-A23P, SA55000-A1, or SA55000-A20P, replace the SAP cylinder head assembly at the first TBO after the effective date of this AD. Engines that were already overhauled may continue in service until the first TBO after the effective date of this AD. Prohibition Against Installing Certain P/N SAP Cylinder Assemblies (j) After the effective date of this AD, do not install any SAP investment cast cylinder assembly, P/Ns SA52000-A1, SA52000-A20P, SA52000-A21P, SA52000-A22P, SA52000-A23P, SA55000-A1, or SA55000-A20P, in any engine. Alternative Methods of

Unsafe condition

This AD results from reports of cracks in the area of the exhaust valve and separation of cylinder heads from the barrels of SAP cylinder assemblies with certain part numbers. We are issuing this AD to prevent the separation of the cylinder head, which could result in immediate loss of engine power, possible structural damage to the engine, and possible fire in the engine compartment.

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