Applicability:
Lycoming Engines (formerly Textron Lycoming) models 320, 360, and
540 series, parallel valve, reciprocating engines specified in
Table 1 of FAA AD 2005-26-10, with Engine Components Inc. (ECi)
cylinder assemblies, part number (P/N) AEL65102 series "Classic
Cast", with casting P/N AEL65099 and serial numbers (SNs) 1 through
9879, installed.
Requirement: Engines Not Repaired or
Overhauled Since New
If your engine has not been overhauled or had any major repair
since new, no further action is required.
Engines Overhauled or Repaired Since New
1. If your engine was overhauled or repaired since new, do the
following:
(a) Determine if ECi cylinder assemblies, P/N AEL65102 series
"Classic Cast", with casting P/N AEL65099 and SNs 1 through 9879
are installed on your engine, as follows:
(i) Inspect the engine log books and maintenance records for
reference to the subject ECi cylinder assemblies.
(ii) If the engine log books and maintenance records did not record
the P/N and SN of the cylinder assemblies, visually inspect the
cylinder assemblies and verify the P/N and SN of the cylinder
assemblies. If the cylinder assemblies are not ECi, P/N AEL65102
series "Classic Cast", with casting P/N AEL65099, no further action
is required.
2. If any cylinder assembly is an ECi P/N AEL65102 series
"Classic Cast", with casting P/N AEL65099 and a SN 1 through 9879,
replace the cylinder assembly.
Definition of a Replacement Cylinder
Assembly
For the purpose of this AD, a replacement cylinder assembly is
defined as follows:
- A serviceable cylinder assembly made by Lycoming Engines.
- A serviceable FAA-approved, Parts Manufacturer Approval
cylinder assembly from another manufacturer.
- A serviceable ECi cylinder assembly, P/N AEL65102 series,
"Titan", with casting P/N AEL85009.
- A serviceable ECi cylinder assembly, P/N AEL65102 series, with
casting P/N AEL65099, that has a SN 9880 or higher.
3. Do not install any ECi cylinder assembly, P/N AEL65102, with
casting P/N AEL65099 that has a SN 1 through 9879, onto any
engine.
Note: FAA AD 2005-26-10 Amdt 39-14431
refers.
Compliance:
- Within 10 hours after
the effective date of this AD, unless previously accomplished.
- If the cylinder assembly has fewer than 800 operating hours-
in-service (HIS) on the effective date of this AD, replace the
cylinder assembly at no later than 800 operating HIS. No action is
required until the operating HIS reaches 800 hours. If the cylinder
assembly has 800 operating HIS or more on the effective date of
this AD, replace the cylinder assembly within 60 operating HIS
after the effective date of this AD.
- After the effective date of this AD.
This Airworthiness Directive becomes effective on 16 February
2006.
Background: The FAA has approximately 30
reports of failure of the subject cylinder assemblies marketed by
ECi. The requirements of this AD are to prevent loss of engine
power due to cracks in the cylinder assemblies and possible engine
failure caused by separation of a cylinder head.