Teledyne Continental Motors, Inc.
TM
Standard
Practices
IOF-550 Permold Series Engine Maintenance Manual
C-5
1 April 2007
parts; and has made no determination regarding the effect, if any, that using such parts
may have on TCM supplied engines or parts.
C-2.3. Know Your Supplier
Some reproduced parts and components, particularly instruments, have been
manufactured by entities other than the original equipment manufacturer and are
available for purchase and installation on U.S.-certified aircraft. Often, an original part is
used as a sample to produce duplicates. The reproduced parts
appear
to be as good as the
original part. However, there are many unknown factors to be considered that may not be
readily apparent to the purchaser, such as heat-treating, plating, inspections, tests, and
calibrations. All too often, the faulty part is not discovered until a malfunction or an
accident occurs.
Therefore, in accordance with FARs, certification of materials, parts, and appliances for
aircraft return to service is the responsibility of the person or agency who signs the
approval. The owner/operator is responsible for the continued airworthiness of the
aircraft. To assure continued safety in aircraft operation, it is essential that great care be
used when inspecting, testing, and determining the acceptability of all parts and
materials. Particular caution should be exercised when the identity of materials, parts, and
appliances cannot be established or when their origin is in doubt.
C-2.4. 100% Parts Replacement Requirements
NOTE: Service documents published or revised subsequent to the
issuance of this publication may mandate the replacement of
components and parts not included in these instructions. At engine
overhaul, the technician must review all service bulletins to ensure
compliance with the manufacturer’s requirements for continued
airworthiness.
Replace all gaskets, seals, packing, hoses, O-rings, cotter pins, retaining rings (snap
rings), safety wire, self locking fasteners (including exhaust nuts), and lock washers with
new parts during assembly, regardless of the type of maintenance.
Do not re-use worn, damaged or deformed fasteners. Do not replate cadmium plated
fasteners or washers. If the cadmium plating has been removed, discard the item and
replace it with a new part.
Engine mounted accessories must be maintained in accordance with the manufacturer’s
instructions. Additionally, accessories must be overhauled during engine overhaul, or
more frequently, in accordance with the manufacturer’s instructions.
