Tue, Apr 03, 2007
AD NUMBER: 2007-04-19R1
MANUFACTURER: Cylinder assembly
SUBJECT: Airworthiness Directive 2007-04-19R1
SUMMARY: The FAA is
revising an existing airworthiness directive (AD) for certain SAP
cylinder assemblies installed in Teledyne Continental Motors (TCM)
470, 520, and 550 series reciprocating engines, Lycoming Engines
(LE) 320, 360, and 540 series reciprocating engines, Avco Lycoming
(AL) 540 series reciprocating engines, and Superior Air Parts, Inc.
(SAP) 360 series reciprocating engines.
That AD currently requires removing from service certain SAP
part numbered (P/N) cylinder assemblies installed in TCM, LE, and
AL reciprocating engines. That AD also requires removing from
service certain cylinder assemblies installed as original equipment
in SAP reciprocating engines, or in certain overhauled or repaired
SAP reciprocating engines.
This AD continues to require those same actions. This AD results
from comments from the Public on the existing AD.
We are issuing this AD to prevent cylinder separation that can
lead to engine failure, a possible engine compartment fire, and
damage to the airplane.
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