The bulletin
Text extracted from the PDF.
SPECIAL
AIRWORTHINESS
INFORMATION
BULLETIN
REGULATORY SUPPORT DIVISION P.O. BOX 26460 OKLAHOMA CITY, OKLAHOMA 73125-0460
U.S. Department of Transportation Federal Aviation Administration
No. CE-00-07 November 12, 1999
SAIB’s are posted on the internet at http://av-info.faa.gov This is issued for informational purposes only and any recommendation for corrective action is not mandatory.
Introduction:
The purpose of this Special Airworthiness Information Bulle tin (SAIB) is to alert owne rs/operators of Teledyne Continental Motors (TCM) models O-470, IO-470, TSIO-470, IO-520, LIO-520, TSIO-520, LTSIO-520, GTSIO-520, IO-550, TSIO-550 and TSIO L-550 series reciprocating engines of the recommendation to replace connecting rod bolts at the time of overhaul. This information is advisory in nature and not mandated by regulation.
Background:
Eight Accident/Incident Reports from 1974 to the presen t indicate failure of the connecting rod bolts on the TCM IO/TSIO-520-series engines. There were an add itional three connecting rod bolt failures; one each on a C-85, an O-300 and a TSIO-360. In addition there are 40 Service Difficulty reports from the same period which indicate problems with the connecting rods/bolts. In most cases it is not possible to determine if the rods, the bolts, or some other component/event caused the pr oblem. Although there are no reports, the TCM 470 and 550 series engines are included in this document because they use the same part number connecting rod bolts.
TCM Service Bulletin, SB97-6, issued on April 7, 1997, lis ts components including the connecting rod bolts that should be replaced during maintenance and overhaul. TCM SB96-7B issued on January 1, 1999, lists current torque values for all fasteners on TCM engines as well as information on proper lubrication during the installation process.
Recommendation:
Based on currently available information, the FAA is only recommending the following actions; however, the FAA will continue this investigation and additional actions . Issuance of an Airworthiness Directive may be found to be warranted based on analysis of new information.
The FAA recommends that the connecting rod bolts as we ll as the other components listed in SB97-6 be replaced during maintenance and at the time of overhaul. The FAA further recommends the use of SB96-7B to obtain torque values and lubrication procedures for the installation of these components.
Copies of TCM SB96-7B and SB97-6 may be obtained by calling the TCM Customer Service Department at
(888) 221-6942 and leaving your name and address; the bulletin will be mailed as soon as possible. Alternatively, you may contact the Service Department by mail at:
Teledyne Continental Motors P.O. Box 90 Mobile, AL 36601 In addition, the complete text of SB96-7B and SB97-6 are available on the TCM website at:
www.TCMLINK.com.
For Further Information Contact Jerry Robinette, Aerospace Engineer, Atlanta Aircraft Cer tification Office, FAA, Small Airplane Directorate, 1895 Phoenix Boulevard, One Crown Center, Suite 450, Atlanta, GA 30349; telephone: (770) 703-6096; fax:
(770) 703-6097; email: jerry.robinette@faa.gov
CHANGE OF ADDRESS NOTICE
Airworthiness Directives (AD) for a particular make and m odel of aircraft are mailed to the aircraft owners using the permanent mailing address on file with the FAA Registry. If you need to change your address, please complete this form and mail to FAA Aircraft Registration. A revised Certif icate of Aircraft Registration will be mailed to you without charge.
Signature requirements:
— Individual owner must sign.
— Partnership, a general partner must sign.
— Co-owner, each co-owner must si gn, continuing as necessary on an attached sheet.
— Government, any authorized person may sign.
MAIL TO:
FAA Aircraft Registry, AFS-750 Mike Monroney Aeronautical Center P.O. Box 25504 Oklahoma City, OK 73125-0504 AIRCRAFT REGISTRATION NO.
SERIAL NO.
MAKE
MODEL
ADDRESS CHANGE REQUESTED
NAME AND ADDRESS OF CERTIFICATE HOLDER
___________________________________________________________ STREET
___________________________________________________________ CITY
___________________________________________________________
STATE ZIP COUNTRY
SIGNATURE (In Ink)
TITLE
DATE
CANCELLATION OF REGISTRATION REQUESTED:
(check applicable block, sign, and date)
1. Aircraft sold to: (Purchaser's name and address)
_________________________________________________________
_________________________________________________________
_________________________________________________________
2. Aircraft destroyed/scrapped
3. Aircraft exported to _______________________________________________
4. Other, specify ___________________________________________________
I (we) request cancellation of registration for the above reason.
SIGNATURE (In Ink)
TITLE
DATE
U.S. Department of Transportation
Federal Aviation Administration
FIRST-CLASS MAIL
POSTAGE & FEES PAID FAA PERMIT NO. G44
Regulatory Support Division P.O. Box 26460 Oklahoma City, OK 73125-0460 AFS-610
Official Business Penalty for Private Use $300