/

/

Division Teledyne Continental Motors Piston Engin - AD/CON/90 Amdt 1 - EQ3 Cylinders - Inspection for Cracks - Teledyne Continental Motors Piston Engines | Zoe

CTHIn ForceLegislation

AD/CON/90 Amdt 1 - EQ3 Cylinders - Inspection for Cracks

Teledyne Continental Motors Piston EnginTeledyne Continental Motors Piston Engines

Start here

Get a plain-English read of Teledyne Continental Motors Piston Engin

Turn the raw legal text into a practical explanation grounded in AD/CON/90 Amdt 1 - EQ3 Cylinders - Inspection for Cracks.

Ask Zoe about this section View in full context

Teledyne Continental Motors Piston Engines

AD/CON/90 Amdt 1	EQ3 Cylinders - Inspection for Cracks	12/2009

Applicability:	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 Directive that have one or more affected TCM cylinders installed.To identify the affected cylinders, cross reference the engine models in Table 1 of this Directive with the engine serial numbers found in Tables 1, 1A, 2 and 2A of TCM Mandatory Service Bulletin (MSB) No. MSB09-1B, dated 14 July 2009. Use the tables found in MSB09-1B to also identify spare EQ3 cylinders by cylinder part number and cylinder serial number that may have been installed on these engines.
	Table 1 - Affected Engine Models
	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
	Note 1: 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 aeroplanes.
Requirement:	1. Identify EQ3 cylinders using Step 1 of MSB09-1B.

	2. For EQ3 cylinders with 400 or more hours total time of operation on the effective date of this Directive, perform an initial visual inspection of the cylinder for cracks using Step 2, paragraph B, of MSB09-1B.
	3. For EQ3 cylinders with fewer than 400 hours total time of operation on the effective date of this Directive, perform an initial visual inspection of the cylinder for cracks, using Step 2, paragraph B, of TCM MSB09-1B.

Background:	In February 2009, the FAA was made aware by TCM of reports of 35 EQ3 cylinders found with cracks during inspection. Cracked cylinders occurred on engines with times ranging from about 430 to 1,300 hours of operation. TCM investigated the cause and discovered that their EQ3 configuration cylinder head casting tool used in the cylinder manufacturing process created an area of reduced wall thickness. This reduced wall thickness can result in a crack in the area between the upper spark plug bore and the fuel injector/primer nozzle bore during operation. TCM shipped engines with EQ3 cylinders and shipped individual EQ3 cylinders from 1 November 2007, through 30 January 2009. Also, TCM produced a group of about 300 EQ3 cylinders in August and September of 2006.
	This condition, if not corrected, could result in loss of engine power due to cracks in the cylinder head, possible engine failure and fire in the engine compartment.
	This Amendment corrects a typographical error in the compliance statement. Compliance times remain unchanged.
	The original issue of this Directive became effective on 7 October 2009.