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Airmotive Steel, CermiNil, Classic Cast, Double Band, ECi, FREEDOM, IFR, Nickel+Carbide, Q3, Q4, Q5, TITAN and TITAN Advanced are Trademarks or Registered Trademarks of Engine Components, Inc. 

T113

Mandatory S.B. No.: 05-8 Service Bulletin

ENGINE COMPONENTS, INC. Page: 1 of 2

Issued: 09/01/05 

Revision: 1 (12/29/05)

Title: REPLACEMENT OF CLASSIC CAST CYLINDERS IN 

COMPLIANCE WITH AIRWORTHINESS DIRECTIVE 2005-26-10

 

1.0 PURPOSE: To announce a replacement program for Engine Components, Inc. (ECi®) Classic CastTM i

 cylinders 

(P/N AEL65102) manufactured using Closa Foundry head castings for Lycoming parallel valve engines, in accordance 

with the FAA’s Airworthiness Directive (AD) 2005-26-10 which becomes effective January 31, 2006. 

2.0 BACKGROUND: ECi produced and sold Classic Cast cylinders addressed in this Mandatory Service Bulletin and FAA’s 

Airworthiness Directive beginning in January 1997 through September 2001. These cylinders were the subject of a Special 

Airworthiness Information Bulletin No. NE-01-32 issued July 18, 2001. Subsequent to the issuance of the SAIB, the FAA 

and ECi have continued to receive reports of cracks in these cylinders. 

3.0 TIME OF COMPLIANCE: If the cylinder assemblies are identified as being affected by this AD per sections 4.0 and 5.0 

of this Mandatory Service Bulletin, then: 

3.1 If the cylinder assembly has fewer than 800 operating hours-in-service (HIS) on the effective date of the AD, replace 

the cylinder at no later than 800 operating hours-in-service. No action is required until the affected cylinders reach 

800 operating HIS. 

3.2 If, on the effective date of this AD, the cylinder assembly has 800 operating HIS or more, replace the cylinder 

assembly within 60 operating HIS after the effective date of the AD. 

4.0 MODELS AFFECTED: The Classic Cast replacement cylinders to be replaced are eligible for installation on the 

following engines: 

O-320-A1A, A1B, A2A, A2B, A2C, A2D, A3A, A3B, A3C, B1A, B1B, B2A, B2B, B2C, B3A, B3B, B3C, C1A, C1B, 

C2A, C2B, C2C, C3A, C3B, C3C, D1A, D1AD, D1B, D1C, D1D, D1F, D2A, D2B, D2C, D2F, D2G, D2H, D2J, D3G, 

E1A, E1B, E1C, E1F, E1J, E2A, E2B, E2C, E2D, E2E, E2F, E2G, E2H, E3D, E3H; IO-320-A1A, A2A, B1A, B1B, B1C, 

B1D, B1E, B2A, C1A, C1B, C1F, D1A, D1AD, D1B, D1C, E1A, E1B, E2A, E2B, F1A; AIO-320-A1A, A1B, A2A, A2B, 

B1B, C1B; AEIO-320-D1B, D2B, E1A, E1B, E2A, E2B; LIO-320-B1A, C1A; O-360-A1A, A1AD, A1C, A1D, A1F, 

A1F6, A1F6D, A1G, A1G6, A1G6D, A1H, A1H6, A1J, A1LD, A2A, A2D, A2E, A2F, A2G, A2H, A3A, A3AD, A3D, 

A4A, A4AD, A4D, A4G, A4J, A4JD, A4K, A4M, A4N, A5AD, B1A, B2A, B2B, C1A, C1C, C1E, C1F, C1G, C2A, 

C2B, C2C, C2D, C2E, D1A, D2A, D2B, F1A6, G1A6; LO-360-A1G6D, A1H6; IO-360-B1A, B1B, B1BD, B1C, B1D, 

B1E, B1F, B1F6, B2E, B2F, B2F6, B4A, E1A; TO-360-A1G6D; LTO-360-A1G6D; HO-360-A1A, B1A, B1B, C1A; 

O-540-A1A, A1A5, A1B5, A1C5, A1D, A1D5, A2B, A3D5, A4A5, A4B5, A4C5, A4D5, B1A5, B1B5, B1D5, B2A5, 

B2B5, B2C5, B2C5D, B4A5, B4B5, B4B5D, D1A5, E1A, E4A5, E4B5, E4B5D, E4C5, F1A5, F1B5, G1A5, G1A5D, 

G2A5, H1A5, H1A5D, H1B5, H1B5D, H2A5, H2A5D, H2B5D, J1A5D, J1B5D, J1C5D, J1D5D, J3A5, J3A5D, J3C5D; 

IO-540- A1A, C1B5, C1C5, C2C, C4A5, C4B5, C4B5D, C4C5, C4D5D, D4A5, D4B5, D4C5, J4A5, N1A5, N1A5D, 

R1A5, T4A5, T4A5D, T4B5D, T4C5D, V4A5D, W1A5D, W3A5D; LTIO-540-K1AD 

5.0 CYLINDER IDENTIFICATION: The ECi Classic Cast cylinders that are affected by this AD are identified through 

several unique features. The primary identification feature is the casting part number, AEL65099, which is cast into the 

cylinder rocker flange above the exhaust port as shown in Photograph 1 (next page.) Classic Cast replacement cylinders 

for Lycoming parallel valve engines have this unique number while the TITAN® brand cylinders, which are NOT the 

subject of this Mandatory Service Bulletin, have casting number AEL85099 (See photograph 2 next page.) 

NOTE: The Subject Matter of This Service Bulletin Is Incorporated In Whole Or In Part in an FAA 

Airworthiness Directive. Technical Portions are FAA DER Approved. 
ENGINE COMPONENTS, INC. 

Mandatory Service Bulletin No. 05-8, Revision 1 (12/29/05) 

REPLACEMENT OF CLASSIC CAST CYLINDERS IN COMPLIANCE WITH 

AIRWORTHINESS DIRECTIVE 2005-26-10 

Page 2 of 2

Photograph 2 

TITAN Cylinder (Oberdorfer Casting) 

NOT AFFECTED BY AD 

Photograph 1 

Classic Cast (Closa Casting) 

Affected by AD 

Photograph 3 

Location of cylinder serial number 

(Must be between 110 and 9879) 

The “EC” logo on the Classic Cast heads is also on the rocker flange toward the intake port side of the cylinder head 

(Photograph 1), whereas the TITAN cylinder has the Oberdorfer logo as well as the ECi logo, instead of just “EC” (Photograph 2.) 

The cylinder serial number is marked on the side of the cylinder below the rocker cover flange on the intake side. Cylinders with 

part number AEL65099 as described in Photograph 1 (above) AND with serial numbers that are between 110 and 9879 are 

affected by this service bulletin and AD 2005-26-10. Photograph 3 (below) describes the location of the serial number which 

must be 9879 or lower. Cylinders with serial numbers 9880 or higher are not affected.

6.0 REPLACEMENT PROGRAM: ECi will exchange each Classic Cast cylinder returned under this program with a new 

TITAN cylinder complete assembly at a special lower exchange price. The discount will be based on the actual hours in 

service for the cylinder(s). ECi will also provide pro-rated labor reimbursement for removal and installation. Owners or 

operators that wish to exchange their cylinders should contact ECi Customer Service to obtain a Returned Material 

Authorization (RMA) number and a completed Warranty Application (Form T800.1a). The customer can then ship the 

Classic Cast cylinders to ECi (freight pre-paid), and then ECi will ship the new replacement cylinders ground-freight 

prepaid. NOTE: To receive proper discount and labor credit, cylinders MUST be in an “as-removed” condition. 

Do not send piston pins or rocker arms. 

 

i

 Classic Cast and TITAN brand cylinders are trademarks of Engine Components, Inc. 

Casting P/N 

AEL65099

EC Logo 

Oberdorfer Logo 

Casting P/N 

AEL85099 

ECi Logo