Introduction
Teledyne Continental Motors, Inc.
TM
1-6
IOF-240 Series Engine Maintenance Manual
29 November 2006
1-2.
Publications
1-2.1. Service Documents
Six categories of Service Documents may be issued by TCM ranging from mandatory
(Category 1) to informational (Category 6). Definitions of the categories are listed below:
NOTE: Upon FAA approval, all TCM service documents are
published and available on TCMLINK. Service Documents which
contain updates to the Instructions for Continued Airworthiness
must be inserted in the affected manual until such time the manual
is revised to include the Service Document instructions or the
Service Document is cancelled or superseded. Affected manuals
will be referenced in all Service Documents containing updates to
the manufacturer’s Instructions for Continued Airworthiness.
Procedure
Category 1: Mandatory Service Bulletin (MSB)
Used to identify and correct a known or suspected safety hazard which has been
incorporated in whole or in part into an Airworthiness Directive (AD) issued by the FAA
or have been issued at the direction of the FAA by the manufacturer requiring compliance
with an already-issued AD (or an equivalent issued by another country’s airworthiness
authority). May contain updates to TCM’s Instructions for Continued Airworthiness to
address a safety issue.
Category 2: Critical Service Bulletin (CSB)
This category identifies a condition that threatens continued safe operation of an aircraft,
persons or property on the ground unless some specific action (inspection, repair,
replacement, etc.) is taken by the owner or operator. Documents in this category are
candidates for incorporation into an FAA Airworthiness Directive. May contain updates
to TCM’s Instructions for Continued Airworthiness to address a safety issue.
Category 3: Service Bulletin (SB)
Information which the product manufacturer believes may improve the inherent safety of
an aircraft or aircraft component; this category includes the most recent updates to
Instructions for Continued Airworthiness.
Category 4: Service Information Directive (SID)
The manufacturer directs the owner/operator/mechanic in the use of a product to enhance
safety, maintenance or economy. May contain updates to TCM’s Instructions for
Continued Airworthiness in the form of maintenance procedures or specifications.
Category 5: Service Information Letter (SIL)
This category includes all information (not included in categories 1 through 4) that may
be useful to the owner/operator/technician. May contain updates to TCM’s Instructions
for Continued Airworthiness for optional component installations, which are not covered
in the Applicable Operator, Maintenance, or Overhaul Manuals.
