Airworthiness Directive · Amendment 39-16023 · Teledyne Continental Motors O-470, IO-470, TSIO-470, IO-520, TSIO-520, IO-550, and IOF-550 Series Reciprocating Engines
Teledyne Continental Motors O-470, IO-470, TSIO-470, IO-520, TSIO-520, IO-550, and IOF-550 Series Reciprocating Engines
This AD applies to Teledyne Continental Motors (TCM) O-470, IO-470, TSIO-470, IO-520, TSIO-520, IO-550, and IOF-550 reciprocating engine models listed in Table 1 of this AD that have one or more affected TCM cylinders installed. To identify the affected cylinders, cross reference the engine models in Table 1 of this AD with the engine serial numbers found in Tables 1, 1A, 2, and 2A of TCM Mandatory Service Bulletin (MSB) No. MSB09-1B, dated July 14, 2009. Use the tables found in MSB No. MSB09-1B, dated July 14, 2009, to also identify spare EQ3 cylinders by cylinder part number and cylinder serial number that may have been installed on these engines.
| O-470-G, K, L, R, S, M, U |
| IO-470-C, D, E, F, H, L, M, N, S, U, V, VO |
| TSIO-470-B, C, D |
| IO-520-A, B, BA, BB, C, CB, D, E, F, J, K, L, M, MB |
| TSIO-520-AF, B, BB, C, CE, D, DB, E, EB, G, H, J, JB, K, KB, L, LB, M, N, NB, P, R, T, UB, VB, WB |
| IO-550-A, B, C, D, E, F, L |
| IOF-550-B, C, D, E, F, L |
(d) These engines are installed on, but not limited to, Alexandria Aircraft LLC (formerly Bellanca) model 300 Super Viking; Beech Bonanza 33, 35 and 36 series, Beech Baron 56 and 58 series, Cessna 180, 182, 188, 205, 206, 207, 210, 303, 310, 320, 402, and 414 model series; Aero Commander 200 and 500; certain Rockwell (formerly Meyers) Windecker Eagle 200, and Navion airplanes.
The FAA is adopting a new airworthiness directive (AD) for Teledyne Continental Motors (TCM) O-470, IO-470, TSIO-470, IO-520, TSIO-520, IO-550, and IOF-550 series reciprocating engines with TCM EQ3 cylinders installed. This AD requires initial and repetitive visual inspections of TCM EQ3 cylinders for cracks. This AD also requires removal of all EQ3 cylinders as terminating action to the repetitive visual inspections. This AD results from reports of 35 EQ3 cylinders found cracked. We are issuing this AD to prevent loss of engine power due to cracks in the cylinder head, possible engine failure, and fire in the engine compartment.
You are responsible for having the actions required by this AD performed within the compliance times specified unless the actions have already been done.
Within 20 flight hours after the effective date of this AD, identify EQ3 cylinders using Step 1 of TCM MSB No. MSB09-1B, dated July 14, 2009.
(1) Within 20 flight hours after the effective date of this AD, for EQ3 cylinders with 400 or more hours total time of operation on the effective date of this AD, perform an initial visual inspection of the cylinder for cracks using Step 2, paragraph B, of TCM MSB No. MSB09-1B, dated July 14, 2009.
(2) For EQ3 cylinders with fewer than 400 hours total time of operation on the effective date of this AD, perform an initial visual inspection of the cylinder for cracks before reaching 400 hours total time of operation, using Step 2, paragraph B, of TCM MSB No. MSB09-1B, dated July 14, 2009.
(3) Remove from service before flight, any cylinders found cracked.
Repeat the visual inspections required by this AD every 50 hours of operation. Use Step 2, paragraph B, of TCM MSB No. MSB09-1B, dated July 14, 2009, to perform the inspection.
(i) Remove from service before flight, any cylinders found cracked.
Within 1,300 hours total time of operation after the effective date of this AD, remove all EQ3 cylinders from service.
After the effective date of this AD, do not install any EQ3 cylinder onto any engine, or any EQ3 cylinder-equipped engine, onto any aircraft.
Initial visual inspections done before the effective date of this AD per TCM MSB No. MSB09-1A, dated March 11, 2009, comply with the initial inspection requirements specified in this AD.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
